Sanyo Air Conditioner C4272R S C User Guide
07-115 SSHP_II 5/7/07 3:59 PM Page a  
INSTALLATION INSTRUCTIONS  
– Split System Heat Pump Air Conditioner –  
X
K
T
Model Combinations  
Combine indoor and outdoor units only as listed below.  
Indoor Units and Outdoor Units  
Indoor Unit Type  
26  
30  
36  
42  
Remarks  
XH2672R  
XHW2672R  
KH2672R  
KHS2672R  
KHH2672R  
KHHS2672R  
TH2672R  
XH3672R  
XHW3672R  
KH3672R  
KHS3672R  
XH4272R  
XHW4272R  
Optional remote controller  
4-Way Air Discharge  
Semi-Concealed  
X
K
with Wired Remote Controller: RCS-TM80BG  
Optional remote controller  
KH3072R  
KHS3072R  
with Wireless Remote Controller: RCS-SH1UA  
Optional remote controller  
Wall-Mounted  
U
C
with Wireless Remote Controller: RCS-SH1UA  
Optional remote controller  
TH3672R  
TH4272R  
THW2672R  
THH2672R  
THW3672R  
THH3672R  
THW4272R  
with Wired Remote Controller: RCS-TM80BG  
Unit with Back-up heater  
T
Ceiling-Mounted  
Unit with Back-up heater  
with Wired Remote Controller: RCS-TM80BG  
THHW2672R  
THHW3672R  
UH2672R  
UHW2672R  
CH2672R  
C2672R  
UH3672R  
UHW3672R  
CH3672R  
C3672R  
Optional remote controller  
U
C
Concealed-Duct  
Outdoor Units  
RC  
(WD)  
with Wired Remote Controller: RCS-TM80BG  
CH3072R  
C3072R  
CH4272R  
C4272R  
H/P  
S/C  
RC  
(WD)  
Wired Remote  
Controller  
RC  
(WL)  
RCS-SH80UG (Optional part)  
Built-in type: RCS-SH80UA.WL (Optional part)  
External type: RCS-BH80UA.WL (Optional part)  
for X and T type Indoor units  
for U type Indoor units  
RC Wireless Remote  
(WL) Controller  
Built-in type: RCS-SH80UA (Accessory part / Optional part) for K type Indoor units  
for X, T and U type Indoor units.  
TRC  
SC  
Timer Remote  
TRC  
RCS-TM80BG* (Accessory part / Optional part)  
* Timer Remote Controller comes with  
Controller  
Owner’s Manual and Installation Instructions.  
SC System Controller  
SHA-KC64UG (Optional part)  
OPERATING LIMITS  
I Maximum Conditions Cooling  
/ Heating  
Outdoor temperature : 109°F DB / 65°F WB  
Room temperature : 71°F WB / 80°F DB  
I Minimum Conditions  
Outdoor temperature : 0°F* DB / 5°F WB  
Room temperature : 57°F WB / 59°F DB  
Units should be installed by licensed contractor according to  
local code requirements.  
* When air discharge chamber is installed.  
SANYO Commercial Solutions  
In Canada  
A division of SANYO North America Corporation  
Cornerstone Business Park  
1062 Thorndale Avenue  
SANYO Canada Inc.  
1-300 Applewood Crescent  
Concord, Ontario  
L4K 5C7, Canada  
Bensenville, IL 60106, U.S.A.  
85464359863005 ©SANYO 2007  
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07-115 SSHP_II 5/7/07 3:59 PM Page 3  
2. The standards for minimum room volume are as  
follows.  
Check of Density Limit  
The room in which the air conditioner is to be  
(1) No partition (shaded portion)  
installed requires a design that in the event of  
refrigerant gas leaking out, its density will not  
exceed a set limit.  
The refrigerant (R410A), which is used in the air condi-  
tioner, is safe, without the toxicity or combustibility of  
ammonia, and is not restricted by laws imposed to pro-  
tect the ozone layer. However, since it contains more  
than air, it poses the risk of suffocation if its density  
should rise excessively. Suffocation from leakage of  
refrigerant is almost non-existent. With the recent  
increase in the number of high density buildings, how-  
ever, the installation of multi air conditioner systems is  
on the increase because of the need for effective use  
of floor space, individual control, energy conservation  
by curtailing heat and carrying power, etc.  
(2) When there is an effective opening with the adja-  
cent room for ventilation of leaking refrigerant gas  
(opening without a door, or an opening 0.15% or  
larger than the respective floor spaces at the top  
or bottom of the door).  
Outdoor unit  
Refrigerant tubing  
Indoor unit  
Most importantly, the multi air conditioner system is  
able to replenish a large amount of refrigerant com-  
pared to conventional individual air conditioners. If a  
single unit of the multi air conditioner system is to be  
installed in a small room, select a suitable model and  
installation procedure so that if the refrigerant acci-  
dentally leaks out, its density does not reach the limit  
(and in the event of an emergency, measures can be  
made before injury can occur).  
In a room where the density may exceed the limit,  
create an opening with adjacent rooms, or install  
mechanical ventilation combined with a gas leak  
detection device. The density is as given below.  
(3) If an indoor unit is installed in each partitioned  
room and the refrigerant tubing is interconnected,  
the smallest room of course becomes the object.  
But when mechanical ventilation is installed inter-  
locked with a gas leakage detector in the smallest  
room where the density limit is exceeded, the vol-  
ume of the next smallest room becomes the object.  
Refrigerant tubing  
Total amount of refrigerant (oz.)  
Outdoor unit  
Min. volume of the indoor unit installed room (ft.3)  
< Density limit (oz./ft.3)  
Very  
small  
Indoor unit  
room  
The density limit of refrigerant which is used in multi air con-  
ditioners is 0.3 oz./ft.3 (ISO 5149).  
Small  
room  
Medium  
room  
Large room  
NOTE  
Mechanical ventilation device – Gas leak detector  
1. If there are 2 or more refrigerating systems in a sin-  
gle refrigerating device, the amount of refrigerant  
should be as charged in each independent device.  
3. The minimum indoor floor space compared with the  
amount of refrigerant is roughly as follows (when  
the ceiling is 9 ft. high):  
For the amount of charge in this example:  
ft.3  
Outdoor unit  
430  
e.g., charged  
amount (22 lbs.)  
e.g., charged  
amount (33 lbs.)  
Range below the  
376  
density limit  
of 0.3 oz./ft.3  
(countermeasures  
323  
Indoor unit  
not needed)  
269  
215  
161  
Range above  
the density limit  
of 0.3 oz./ft.3  
(countermeasures  
needed)  
Room A Room B Room C Room D Room E Room F  
108  
54  
0
The possible amount of leaked refrigerant gas in rooms  
A, B and C is 22 lbs.  
The possible amount of leaked refrigerant gas in rooms  
D, E and F is 33 lbs.  
22  
44  
66  
lbs.  
Total amount of refrigerant  
3
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07-115 SSHP_II 5/7/07 3:59 PM Page 4  
Precautions for Installation Using New Refrigerant  
1. Care regarding tubing  
1-1. Process tubing  
G Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seam-  
less Pipes and Tubes.”  
G Tubing size: Be sure to use the sizes indicated in the table below.  
G Use a tube cutter when cutting the tubing, and be sure to remove any flash. This also applies to distribution  
joints (optional).  
G When bending tubing ø5/8" or smaller, use a bending radius that is 4 times the outer diameter of the tubing or larger.  
Use sufficient care in handling the tubing. Seal the tubing ends with  
CAUTION  
caps or tape to prevent dirt, moisture, or other foreign substances  
from entering. These substances can result in system malfunction.  
Unit: inch  
Material  
O
Outer diameter  
Wall thickness  
1/4  
3/8  
1/2  
5/8  
Copper tube  
1/32  
1/32  
1/32  
5/128  
1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A  
refrigerant deterioration and compressor defects. Due to the features of the refrigerant and refrigerating  
machine oil, the prevention of water and other impurities becomes more important than ever.  
2. Be sure to recharge the refrigerant only in liquid form.  
2-1. Since R410A is a non-azeotrope, recharging the refrigerant in gas form can lower performance and cause  
defects of the unit.  
2-2. Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining  
refrigerant and recharge the required total amount of new refrigerant after fixing the leak.  
3. Different tools required  
3-1. Tool specifications have been changed due to the characteristics of R410A.  
Some tools for R22- and R407C-type refrigerant systems cannot be used.  
Manifold gauge  
R407C tools  
compatible  
with R410A?  
New  
tool?  
Item  
Remarks  
Manifold gauge Yes  
No  
Types of refrigerant, refrigerating machine oil, and  
pressure gauge are different.  
Charge hose  
Yes  
No  
To resist higher pressure, material must be changed.  
Vacuum pump Yes  
Yes  
Use a conventional vacuum pump if it is equipped  
with a check valve. If it has no check valve,  
purchase and attach a vacuum pump adapter.  
Leak detector  
Flaring oil  
Yes  
Yes  
No  
No  
Leak detectors for CFC and HCFC that  
react to chlorine do not function because  
R410A contains no chlorine. Leak detector  
for HFC134a can be used for R410A.  
Vacuum pump  
Outlet  
Inlet  
For systems that use R22, apply mineral oil (Suniso oil)  
to the flare nuts on the tubing to prevent refrigerant  
leakage. For machines that use R407C or R410A, apply  
synthetic oil (ether oil) to the flare nuts.  
* Using tools for R22 and R407C and new tools for R410A together can cause defects.  
4
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07-115 SSHP_II 5/7/07 3:59 PM Page 5  
3-2. Use R410A exclusive cylinder only.  
Configuration and characteristics of cylinders  
G When charging with a refrigerant cylinder, use an  
electronic scale for charging refrigerant. In this  
case, if the volume of refrigerant in the cylinder  
becomes less than 20% of the fully-charged  
amount, the composition of the refrigerant starts  
to change. Thus, do not use the refrigerant if the  
amount in the charging cylinder is less than 20%.  
Valve  
Also, charge the minimum necessary amount to  
the charging cylinder before using it to charge the  
air conditioning unit.  
Liquid  
Single valve  
Charge liquid refrigerant with  
cylinder in up-side-down position.  
Fig. 1  
Valve  
Liquid  
Single valve (with siphon tube)  
Charge with cylinder in normal position.  
Fig. 2  
5
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07-115 SSHP_II 5/7/07 3:59 PM Page 6  
CONTENTS  
Page  
Page  
IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Please Read Before Starting  
Check of Density Limit  
I
Concealed-Duct Type (U Type) . . . . . . . . . . . . . . 51  
3-22. Required Minimum Space for Installation and  
Service  
3-23. Suspending the Indoor Unit  
3-24. Installing the Drain Piping  
3-25. Checking the Drainage  
Precautions for Installation Using New Refrigerant  
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
1-1. Tools Required for Installation (not supplied)  
1-2. Accessories Supplied with Outdoor Unit  
1-3. Type of Copper Tube and Insulation Material  
1-4. Additional Materials Required for Installation  
1-5. Tubing Size  
3-26. Increasing the Fan Speed  
4. HOW TO INSTALL THE OUTDOOR UNIT . . . . . 56  
4-1. Installing the Outdoor Unit  
4-2. Drainage Work  
4-3. Routing the Tubing and Wiring  
2. SELECTING THE INSTALLATION SITE . . . . . . 16  
2-1. Indoor Unit  
5. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . 57  
5-1. General Precautions on Wiring  
2-2. Outdoor Unit  
5-2. Recommended Wire Length and Wire  
Diameter for Power Supply System  
5-3. Wiring System Diagrams  
2-3. Air-Discharge Chamber for Top Discharge  
2-4. Installing the Unit in Heavy Snow Areas  
2-5. Precautions for Installation in Heavy Snow  
Areas  
5-4. How to Connect Wiring to the Terminal  
2-6. Dimensions of Wind Ducting  
2-7. Dimensions of Snow Ducting  
6. HOW TO INSTALL THE WIRED REMOTE  
CONTROLLER (OPTIONAL PART) . . . . . . . . . . 60  
6-1. Installation Site Selection  
6-2. Wired Remote Controller Installation  
6-3. Basic Wiring Diagram  
6-4. Wiring System Diagram for Group Control  
6-5. Wiring System Diagram for Multiple Remote  
Controllers  
6-6. How to Switch the Indoor Temperature Sensor  
6-7. Trouble Diagnostics  
3. HOW TO INSTALL THE INDOOR UNIT . . . . . . . 26  
I
4-Way Air Discharge Semi-Concealed Type  
(X Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
3-1. Suspending the Indoor Unit  
3-2. Preparation for Suspending  
3-3. Placing the Unit Inside the Ceiling  
3-4. Installing the Drain Piping  
3-5. Checking the Drainage  
7. HOW TO INSTALL THE WIRELESS REMOTE  
CONTROLLER  
3-6. Before Installing the Ceiling Panel  
3-7. Installing the Ceiling Panel  
3-8. When Removing the Ceiling Panel  
for Servicing  
(ACCESSORY PART / OPTIONAL PART) . . . . . 68  
7-1. Wireless Remote Controller Installation  
7-2. Room Temperature Sensor Setting  
7-3. Address Switches  
3-9. Duct for Fresh Air  
7-4. Setting the Model Code  
I
Wall-Mounted Type (K Type) . . . . . . . . . . . . . . . . 34  
3-10. Removing the Wall Fixture from the Unit  
3-11. Selecting and Making a Hole  
3-12. Installing the Rear Panel on the Wall  
3-13. Removing the Grille to Install the Indoor Unit  
3-14. Preparing the Indoor Side Tubing  
3-15. Wiring Instructions  
<RCS-SH80UA.WL>  
I
4-Way Air Discharge Semi-Concealed Type  
(X Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70  
7-5. Indicator Section Installation  
7-6. Operating Controller Installation  
3-16. Wiring Instructions for Inter-Unit Connections  
3-17. Shaping the Tubing  
3-18. Installing the Drain Hose  
I
Ceiling-Mounted Type (T Type) . . . . . . . . . . . . . . 71  
7-7. Indicator Section Installation  
7-8. Operating Controller Installation  
7-9. Electrical Wiring  
7-10. Test Run Switch  
7-11. Misoperation Alarm Indicators  
I
Ceiling-Mounted Type (T Type) . . . . . . . . . . . . . . 47  
3-19. Suspending the Indoor Unit  
3-20. Duct for Fresh Air  
3-21. Installing the Drain Piping  
6
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07-115 SSHP_II 5/7/07 3:59 PM Page 7  
Page  
<RCS-BH80UA.WL>  
7-12. Separate Type Signal Receiving Unit Installation  
7-13. Electrical Wiring  
7-14. Test Run Switch  
7-15. Misoperation Alarm Indicators  
7-16. Basic Wiring Diagram  
7-17. Wiring System Diagram for Group Control  
7-18. Wiring System Diagram for Multiple Remote Controllers  
<RCS-SH1UA>  
7-19. Test Run Procedure  
7-20. Check Items Before the Test Run  
7-21. Preparing for the Test Run  
7-22. Precautions  
7-23. When Setting Indoor Unit Control PCB Switch for  
Wall-Mounted Indoor Unit  
8. HOW TO INSTALL THE SYSTEM CONTROLLER  
(OPTIONAL PART) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85  
8-1. System Controller Installation  
8-2. Electrical Wiring  
8-3. Address Switch Setting  
8-4. Mode Setting  
8-5. How to Perform Zone Registration  
8-6. Connection with Other Equipment  
8-7. Memory Back Up Switch  
8-8. Test Run  
9. HOW TO PROCESS TUBING . . . . . . . . . . . . . . . . . . . . . . . . . 97  
9-1. Connecting the Refrigerant Tubing  
9-2. Connecting Tubing between Indoor and  
Outdoor Units  
9-3. Insulating the Refrigerant Tubing  
9-4. Taping the Tubes  
9-5. Finishing the Installation  
10. LEAK TEST, EVACUATION AND ADDITIONAL  
REFRIGERANT CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . 101  
10-1. Leak Test  
10-2. Evacuation  
10-3. Charging Additional Refrigerant  
10-4. Finishing the Job  
11. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104  
11-1. Preparing for Test Run  
11-2. Caution  
11-3. Test Run Procedure  
11-4. Items to Check Before the Test Run  
11-5. Test Run Using the Remote Controller  
11-6. Precautions  
11-7. Table of Self-Diagnostic Functions and Corrections  
(X, T, U, K Type)  
11-8. Examples of Wiring Diagrams  
7
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07-115 SSHP_II 5/7/07 3:59 PM Page 8  
1-3. Type of Copper Tube and Insulation Material  
1. GENERAL  
This booklet briefly outlines where and how to install  
the air conditioning system. Please read over the  
entire set of instructions for the indoor and outdoor  
units and make sure all accessory parts listed are  
with the system before beginning.  
Copper tubing for connecting the outdoor unit to the  
indoor unit is available in kits which contain the liquid  
and gas tubing, fittings and insulation. Consult your  
nearest sales outlet or A/C workshop.  
If you wish to purchase these materials separately  
from a local source, you will need:  
1-1. Tools Required for Installation (not supplied)  
1. Standard screwdriver  
2. Phillips head screwdriver  
3. Knife or wire stripper  
4. Tape measure  
5. Level  
6. Sabre saw or key hole saw  
7. Hacksaw  
1. Deoxidized annealed copper tube for refrigerant  
tubing.  
2. Foamed polyethylene insulation for copper tubes  
as required to precise length of tubing.  
Wall thickness of the insulation should be not less  
than 5/16 in.  
8. Core bits  
3. Use insulated copper wire for field wiring. Wire size  
varies with the total length of wiring. Refer to  
Section 5. “Electrical Wiring” for details.  
9. Hammer  
10. Drill  
11. Tube cutter  
12. Tube flaring tool  
13. Torque wrench  
14. Adjustable wrench  
15. Reamer (for deburring)  
Check local electrical codes  
CAUTION  
and regulations before  
obtaining wire. Also, check  
any specified instructions  
or limitations.  
1-2. Accessories Supplied with Outdoor Unit  
See Tables 1-1 to 1-9.  
Table  
1-1  
1-2  
1-3  
1-4  
1-5  
1-6  
1-7  
1-8  
1-9  
Type  
4-Way Air Discharge Semi-Concealed  
Wall-Mounted  
1-4. Additional Materials Required for Installation  
1. Refrigeration (armored) tape  
Ceiling-Mounted  
2. Insulated staples or clamps for connecting wire  
(See your local codes.)  
Concealed-Duct  
Outdoor Unit  
3. Putty  
Wired Remote Controller  
Wireless Remote Controller  
Timer Remote Controller  
System Controller  
4. Refrigeration tubing lubricant  
5. Clamps or saddles to secure refrigerant tubing  
6. Scale for weighing  
8
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07-115 SSHP_II 5/7/07 3:59 PM Page 9  
Table 1-1 XH / XHW (4-Way Air Discharge Semi-Concealed)  
Part Name  
Full-scale installation diagram  
Flare insulator  
Washer  
Figure  
Q’ty  
Remarks  
For determining suspension bolt pitch  
1
For gas and liquid tubes  
For suspending indoor unit from ceiling  
For gas tube flare nuts  
For securing drain hose  
For drain joint  
2
8
(White)  
Insulating tape  
Hose band  
1
2
Packing  
1
Drain insulator  
Drain hose  
1
For drain joint  
1
Drain hose adaptor  
Sealing putty  
1
For drain outlet  
1
For sealing recessed portion of power supply  
For sizing up of liquid tube from 1/4 in. to 3/8 in.  
(only for 26 type)  
Tube connector  
1
Wired remote controller  
(comes with 7-7/8 in. wire)  
1
For XHW type  
Wood screws  
2
2
1
1
For XHW type  
For XHW type  
For XHW type  
For XHW type  
Wire joints  
Owner’s Manual  
Installation Instructions  
Table 1-2 KH / KHS (Wall-Mounted)  
Part Name  
Figure  
‘Q’ty  
Remarks  
*1  
For supporting indoor unit  
Wall fixture  
1
*1  
1
Insulator  
For insulation of tubing of the indoor unit  
For securing indoor unit  
*1  
Mounting plate  
1
20  
1
Truss-head  
Phillips  
4 × 1 in.  
*1  
For attaching wall fixture  
Tapping screw  
For determining location where indoor unit is  
installed  
Full-scale diagram  
*2  
1
Wall fixture  
For supporting indoor unit  
For attaching wall fixture  
*2  
10  
1
Rawl plug  
*2  
Cover  
For improved tubing appearance  
Truss-head  
Phillips  
4 × 5/8 in.  
*2  
10 For attaching wall fixture  
Tapping screw  
1
Insulator  
For insulation of tubing of indoor unit  
For sizing up of liquid tube from 1/4 in. to 3/8 in.  
(only for 26 type)  
1
Tube connector  
*2  
L shape tube connector  
1
Simplifies on-site tubing work  
Wireless remote controller  
1
1
2
2
For KHS type  
For KHS type  
For KHS type  
For KHS type  
Wireless remote controller  
mounting cradle  
Truss-head tapping screws  
4 × 5/8 in.  
Batteries  
*1  
KH(S)3672R  
*2  
KH(S)3072R  
KH(S)3672R  
9
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07-115 SSHP_II 5/7/07 3:59 PM Page 10  
Table 1-3 TH / THW (Ceiling-Mounted)  
Part Name  
Figure  
‘Q’ty  
Remarks  
For temporarily suspending indoor unit  
from ceiling  
4
Special washer  
Drain insulator  
1
For drain hose joint  
T3  
T5  
Flare insulator  
1 Set For gas tube joints  
Drain hose adaptor  
1
4
Drain hose clamp  
Black  
White  
For gas tube and drain hose joint  
For gas flare joints  
2
1
2
Insulating tape  
(heat-resisting)  
For ends of flare insulator  
Vinyl clamp  
Full-scale installation  
diagram  
For determining suspension bolt pitch  
1
Sealing putty  
1
1
For sealing recessed portion of power supply  
Drain hose  
For sizing up of liquid tube from 1/4 in. to 3/8 in.  
(only for 26 type)  
Tube connector  
1
Wired remote controller  
(comes with 7-7/8 in. wire)  
1
For THW type  
Wood screws  
2
2
1
1
For THW type  
For THW type  
For THW type  
For THW type  
Wire joints  
Owner’s Manual  
Installation Instructions  
Table1-4 UH / UHW (Concealed-Duct)  
Part Name  
Flare insulator  
Figure  
‘Q’ty  
Remarks  
For gas and liquid tubes  
For gas and liquid tubes  
For gas and liquid tube flare nuts  
For air intake duct connection  
For increasing fan speed  
For securing drain hose  
For drain joint  
2
(Black)  
(White)  
2
Insulating tape  
2
Tapping screw TOTA4-10  
Jumper cable*  
Hose band  
14 or 20 or 24  
1
1
1
1
1
1
1
9
Packing  
For sealing recessed portion of power supply  
For drain joint  
Sealing putty  
Drain insulator  
Drain hose  
Drain hose adaptor  
Clamp  
For securing drain hose & refrigerant tubing  
For sizing up of liquid tube from 1/4 in. to 3/8 in.  
(only for 26 type)  
Tube connector  
1
Wired remote controller  
(comes with 7-7/8 in. wire)  
1
For UHW type  
Wood screws  
2
2
1
1
For UHW type  
For UHW type  
For UHW type  
For UHW type  
Wire joints  
Owner’s Manual  
Installation Instructions  
* Jumper cable is housed inside the electrical component box.  
10  
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07-115 SSHP_II 5/7/07 3:59 PM Page 11  
Table 1-5 (Accessories for the Wired Remote Controller)  
Part Name  
Figure  
‘Q’ty  
Part Name  
Figure  
‘Q’ty  
Wired remote controller  
(comes with 7-7/8 in. wire)  
1
Spacers  
2
Machine screws  
M4 × 1 in.  
2
2
Wire joints  
4
Wood screws  
Table 1-6 (Accessories for the Wireless Remote Controller)  
<RCS-SH80UA.WL>  
Part Name  
Figure  
‘Q’ty  
Part Name  
Figure  
‘Q’ty  
Operation controller  
1
Spacers  
2
Run  
Timer Heating preparations  
Pan-head tapping screws  
4 × 13/32 in.  
Indicator section  
1
1
1
2
4
2
3
4
Truss-head tapping screws  
4 × 5/8 in.  
Wireless remote controller  
Wireless remote controller  
mounting cradle  
Vinyl clamps  
L 5-29/32  
Batteries  
Wire joints  
<RCS-SH1UA>  
Part Name  
Figure  
‘Q’ty  
Part Name  
Figure  
‘Q’ty  
Truss-head tapping screws  
4 × 5/8 in.  
Wireless remote controller  
1
2
Wireless remote controller  
mounting cradle  
1
2
Batteries  
11  
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07-115 SSHP_II 5/7/07 3:59 PM Page 12  
<RCS-BH80UA.WL>  
Part Name  
Figure  
‘Q’ty  
Part Name  
Small screws  
Figure  
‘Q’ty  
Separate type signal receiving unit  
(comes with 7-7/8 in. wire)  
1
2
M4 × 1-9/16 in.  
Carrier for ceiling installation  
1
1
1
2
2
Wood screws  
2
4
4
1
1
Wireless remote controller  
Spacers  
Wireless remote controller  
Wire joints  
mounting cradle  
Batteries  
Clamp  
Ceiling installation paper pattern  
Machine screws  
M4 × 1 in.  
(
3-3/4 × 2-1/32 in.  
)
Table 1-7 (Accessories for the Timer Remote Controller)  
Part Name  
Figure  
‘Q’ty  
Part Name  
Figure  
‘Q’ty  
2
Timer Remote Controller  
1
Wood screws  
Connecting wiring  
length 4 ft.  
1
2
Spacers  
2
2
Machine screws  
M4 × 1 in.  
Clamps  
Table 1-8 (Accessories for the System Controller)  
Part Name  
System controller  
Figure  
‘Q’ty  
Part Name  
Figure  
‘Q’ty  
SYSTEM CONTROLLER IDENTIFICATION LABEL  
ALL Central Control  
ZONE1 Central Control  
ZONE2 Central Control  
ZONE3 Central Control  
ZONE4 Central Control  
ALL RCU.  
ZONE1 RCU.  
ZONE2 RCU.  
ZONE3 RCU.  
ZONE4 RCU.  
Label  
1
1
(Identification label)  
*Please attach this label on surface of the lid after cleaning.  
*If need to write down some detail, use magic marker.  
ALL ON  
INPUT  
U1  
Inter-  
unit  
control  
wiring  
ALL OFF  
INPUT  
U2  
Label  
(Terminal base label)  
Rubber bushing  
(7/8 in.)  
COMMON  
INPUT  
U2 Aux.  
UNUSED  
4
2
1
OPERATION  
STATE  
OUTPUT  
ALARM  
OUTPUT  
DC12V  
FROM  
INDOOR  
UNIT PCB.  
COMMON  
OUTPUT  
Screws for fixture  
(1-3/16 in.)  
12  
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07-115 SSHP_II 5/7/07 3:59 PM Page 13  
1-5. Tubing Size  
Single  
Single type  
G Refrigerant tubing between the indoor and outdoor units  
should be kept as short as possible.  
G The length of the refrigerant tubes between the indoor  
and outdoor units are limited by the elevation difference  
between the 2 units. During tubing work, try to make both  
the tubing length (L) and the difference in elevation (H1)  
as short as possible. Refer to Table 1-10.  
Main tubing L  
Table 1-9  
Indoor unit type  
Maximum length  
26, 30, 36 types  
165 ft.  
42 type  
165 ft.  
Charge-less tubing length (actual length)  
Additional charge per 1 ft.  
10 – 100 ft.  
15 – 100 ft.  
0.43 oz.  
<
<
If outdoor unit is higher  
If outdoor unit is lower  
H1  
H1  
100  
50  
Maximum indoor-outdoor  
height difference  
13  
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07-115 SSHP_II 5/7/07 3:59 PM Page 14  
Table 1-10 Tubing Data for Models  
Models  
C(H)3072R  
C(H)3672R  
3/8 (9.52)  
5/8 (15.88)  
165  
C(H)2672R  
C(H)4272R  
Tubing Data  
Tubing size  
Liquid tube  
Gas tube  
in. (mm)  
in. (mm)  
(ft.)  
3/8 (9.52)  
5/8 (15.88)  
165  
3/8 (9.52)  
5/8 (15.88)  
165  
outer diameter  
Limit of tubing length  
Outdoor unit is placed  
100  
100  
100  
Limit of elevation  
difference between  
the 2 units  
higher  
(ft.)  
Outdoor unit is placed  
50  
50  
50  
lower  
(ft.)  
Max. allowable tubing length at shipment (ft.)  
10 – 100  
a) 0.43  
4.2  
10 – 100  
b) 0.43  
6.2  
10 – 100  
b) 0.43  
7.9  
Required additional refrigerant *1  
Refrigerant charged at shipment  
(oz./ft.)  
(lbs.)  
No additional charge of compressor oil is necessary.  
1
*
If total tubing length becomes 100 to 165 ft., charge additional refrigerant by 0.43 oz./ft.  
Table 1-11 List of Connection Tube Sizes  
Main tubing (L)  
26 – 42  
ø5/8"  
ø3/8"  
Type capacity of indoor units  
Gas tube  
Liquid tube  
0.43 oz.  
Amount of additional charge per 1 ft.  
14  
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07-115 SSHP_II 5/7/07 3:59 PM Page 15  
1. This unit requires no additional refrig-  
CAUTION  
erant charge up to 100 ft. tubing length.  
In case of more than 100 ft., additional  
refrigerant charge is required. Refer to  
Table 1-11.  
2. In case of multi type installation,  
indoor units should be installed within  
the same room. If multi type indoor  
units are installed in different rooms,  
temperature control may develop prob-  
lems because thermostat operation  
must follow the thermostat condition of  
1 indoor unit only (the main unit).  
Always check the gas density  
for the room in which the unit is  
installed.  
WARNING  
I Check of limit density  
When installing an air conditioner in a room, it is neces-  
sary to ensure that even if the refrigerant gas acciden-  
tally escapes, its density does not exceed the limit level.  
If the density might exceed the limit level, it is neces-  
sary to set up an opening between it and the adjacent  
room, or to install mechanical ventilation which is inter-  
locked with the leak detector.  
Minimum indoor volume & floor area relative to  
the amount of refrigerant is roughly as given in  
the following table.  
ft.2  
538  
ft.3  
4,842  
Range below the  
density limit of  
484  
430  
376  
323  
269  
215  
161  
108  
54  
4,356  
3,870  
3,384  
2,907  
2,421  
1,935  
1,449  
972  
(Total refrigerant charged amount: oz.)  
3
0.3 oz./ft.  
(Countermeasures  
not needed)  
(Min indoor volume where the indoor unit is installed: ft.3)  
<
Limit density 0.3 (oz./ft.3)  
The limit density of refrigerant which is used in this unit  
is 0.3 oz./ft.3 (ISO 5149).  
Range above the  
density limit of  
3
0.3 oz./ft.  
The shipped outdoor unit comes charged with the  
amount of refrigerant fixed for each type; so add it to  
the amount that is charged at the field. (For the refriger-  
ant charge amount at shipment, refer to the unit’s  
nameplate.)  
(Countermeasures  
needed)  
486  
22  
44  
66  
88 lbs.  
Total amount of refrigerant  
Pay special attention to any  
location, such as a basement  
or recessed area, etc. where  
leaked refrigerant can collect,  
since refrigerant gas is heav-  
ier than air.  
CAUTION  
15  
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07-115 SSHP_II 5/7/07 3:59 PM Page 16  
2. SELECTING THE INSTALLATION SITE  
Ceiling-Mounted Type  
2-1. Indoor Unit  
Ceiling  
AVOID:  
G areas where leakage of flammable gas may be  
Wall  
expected.  
G places where large amounts of oil mist exist.  
Min. 10 inch  
Min. 10 inch  
Front view  
G direct sunlight.  
G locations near inverter lamps which may affect the  
NOTE  
performance of the unit.  
The rear of the indoor unit can be installed flush  
against the wall.  
G locations near heat sources which may affect the  
Ceiling  
Air  
discharge  
performance of the unit.  
G locations where external air may enter the room  
directly. This may cause “sweating” on the air dis-  
charge ports, causing them to spray or drip.  
Air intake  
Min. 2 ft.  
G locations where the remote controller will be splashed  
with water or affected by dampness or humidity.  
Side view  
G installing the remote controller behind curtains or  
Max 25
 
cm  
furniture.  
G locations where the receiver in the indoor unit is  
exposed to the inverter lamp light. Faulty operation of  
the unit occurs.  
4-Way Air Discharge Type  
Concealed-Duct Type  
DO:  
3 ft.  
3 ft.  
G select an appropriate position from which every  
corner of the room can be uniformly cooled.  
3 ft.  
G select a location where the ceiling is strong enough  
3 ft.  
3 ft.  
to support the weight of the unit.  
G select a location where tubing and drain pipe have  
the shortest run to the outdoor unit.  
G allow room for operation and maintenance as well as  
unrestricted air flow around the unit.  
Wall-Mounted Type  
G install the unit within the maximum elevation  
difference above or below the outdoor unit and within  
a total tubing length (L) from the outdoor unit as  
detailed in Table 1-11.  
Min.  
6 inch  
Min.  
Min.  
6 inch  
12 inch  
G allow room for mounting the remote controller about  
3 ft. off the floor, in an area that is not in direct  
sunlight nor in the flow of cool air from the indoor  
unit.  
NOTE  
Air delivery will be degraded if the distance from the  
floor to the ceiling is greater than 10 ft.  
16  
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07-115 SSHP_II 5/7/07 3:59 PM Page 17  
2-2. Outdoor Unit  
AVOID:  
Exhaust fan  
G heat sources, exhaust fans, etc. (Fig. 2-1)  
Hot air  
G damp, humid or uneven locations  
Heat source  
DO:  
Out-  
door  
unit  
G choose a place as cool as possible.  
G choose a place that is well ventilated and outside  
air temperature does not exceed maximum 115°F  
constantly.  
G allow enough room around the unit for air intake/  
Fig. 2-1  
exhaust and possible maintenance. (Fig. 2-2)  
G use lug bolts or equal to bolt down unit, reducing  
vibration and noise.  
G if cooling operation is to be used when the outdoor  
air temperature is 23°F or below, install a duct on  
the outdoor unit.  
Installation space  
(Obstruction above unit)  
Distance between obstructions and the unit air inlet  
and outlet must be as shown below.  
Air direction chamber  
(field supply)  
*3  
B
A
Inlet side C  
More than 25/64"  
*2  
More than 25/64"  
*4  
Inlet side  
*1  
More than 8"  
(Obstruction on  
Outlet side  
More than  
3.3 ft.  
inlet side)  
(Ground)  
*1  
Fig. 2-2  
Fig. 2-3  
G Concerning inlet-side distance “C” (Fig. 2-2)  
CAUTION  
The minimum for distance “C” is 6" if there are no obstructions on the outlet side  
(wall *1 side) and *2 or *4 is not present. In all other cases, the minimum for distance  
“C” is 8".  
G If the unit is installed with the outlet side facing wall *1, then there must be no obstruc-  
tions on 2 of the remaining 3 sides: *2, *3, *4.  
G If wall *1 is on the outlet side (Fig. 2-2), or if obstructions are present on all 3 sides *2,  
*3, and *4 (Fig. 2-2), then the minimum distance for “A” and “B” is 80" (Fig. 2-3). Even  
if there is no wall on the outlet side, a minimum of 3.3 ft. is required.  
Installation requirements  
G provide a solid base (concrete block, 4" × 16"  
beams or equal), a minimum of 6" above ground  
level to reduce humidity and protect the unit against  
possible water damage and decreased service life.  
(Fig. 2-4)  
Anchor bolts  
(4 pieces)  
G use lug bolts or equal to bolt down unit, reducing  
vibration and noise.  
Fig. 2-4  
17  
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07-115 SSHP_II 5/7/07 3:59 PM Page 18  
2-3. Air-Discharge Chamber for Top Discharge  
Be sure to install an air discharge chamber in the  
field when:  
Air discharge  
G it is difficult to keep a space of min. 20" between  
the air discharge outlet and an obstacle.  
Air discharge  
G the air discharge outlet is facing a sidewalk and  
discharged hot air may bother passers-by.  
Refer to Fig. 2-5.  
2-4. Installing the Unit in Heavy Snow Areas  
In locations with strong wind, snow-proof ducting  
should be fitted and direct exposure to the wind  
should be avoided as much as possible.  
Fig. 2-5  
I Countermeasures against snow and wind  
In regions with snow and strong wind, the following  
problems may occur when the outdoor unit is not pro-  
vided with a platform and snow-proof ducting:  
In regions with significant snowfall, the outdoor unit should  
be provided with a platform and snow-proof duct.  
a) The outdoor fan may not run and damage to the  
unit may occur.  
b) There may be no air flow.  
c) The tubing may freeze and burst.  
d) The condenser pressure may drop because of  
strong wind, and the indoor unit may freeze.  
2-5. Precautions for Installation in Heavy Snow  
Areas  
(1) The platform should be higher than the max. snow  
depth. (Fig. 2-6)  
Without snow-  
proof ducting  
(Low platform)  
With snow-  
proof ducting  
(High platform)  
(2) The 2 anchoring feet of the outdoor unit should be  
used for the platform, and the platform should be  
installed beneath the air intake side of outdoor  
unit.  
Fig. 2-6  
Outdoor  
Unit  
(3) The platform foundation must be firm and the unit  
must be secured with anchor bolts.  
(4) In case of installation on a roof subject to strong  
wind, countermeasures must be taken to prevent  
the unit from being blown over.  
Duct  
Air  
Intake  
Fig. 2-7  
18  
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07-115 SSHP_II 5/7/07 3:59 PM Page 19  
2-6. Dimensions of Wind Ducting  
Reference diagram for air-discharge chamber (field supply)  
STK–DRV80U for 2672R / 3072R / 3672R unit  
1
2
Air discharge chamber  
Air discharge chamber (base)  
2
21-13/16  
(25/32)  
(25/32)  
1
Rectangular hole  
(both sides)  
2
5-5/32  
9-27/32  
9-27/32  
1-1/16  
21-13/16  
15/16 17/32  
Unit: inch  
Note: In snowy regions, if there is concern that snow may enter the air discharge  
chamber, remove the base of the chamber (10 screws) before using.  
STK-DRE140A for 4272R unit  
1
2
Unit front, air discharge chamber  
Unit left side, air discharge chamber  
3
4
Unit light side, air discharge chamber  
Reinforcement brackets, 4 locations  
2
1-1/8  
9-7/16  
3
4
1
9-7/16  
1-1/8  
Rectangular  
hole  
Rectangular  
hole  
Rectangular  
hole  
Rectangular  
hole  
22-13/32  
21-13/32  
1
1
Unit: inch  
19  
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07-115 SSHP_II 5/7/07 3:59 PM Page 20  
Dimensions of Outdoor Unit with air-discharge chamber (field supply)  
2672R / 3072R / 3672R unit with STK-DRV80U  
6-11/16  
4-5/16  
25-31/32  
Wind direction  
1/2  
1/2  
1/2  
2-17/32  
21-13/16  
37  
Wind direction  
9-27/32  
Wind direction  
Unit: inch  
4272R unit with STK-DRE140A  
4-5/16  
6-11/16  
25-31/32  
Wind direction  
1/2  
1/2  
1/2  
2-11/36  
21-13/32  
11-13/16  
37  
Wind direction  
Wind  
Wind  
direction  
direction  
Wind direction  
Wind  
Wind  
direction  
direction  
Unit: inch  
20  
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07-115 SSHP_II 5/7/07 3:59 PM Page 21  
Reference diagram for air-discharge chamber (field supply)  
C(H)2672R / 3072R / 3672R / 4272R with STK-DRV80U & DRE140A  
Required space around outdoor unit  
If the air discharge chamber is used, the space shown below must be secured around the outdoor unit.  
If the unit is used without the required space, a protective device may activate, preventing the unit from operating.  
(1) Single-unit installation  
Unit: inch  
The top and both sides must remain open. If there are obstacles to the front and rear of  
the outdoor unit, the obstacle at either the front or rear must be no taller than the height of  
the outdoor unit.  
CAUTION  
(2) Multiple-unit installation  
G
Installation in lateral rows  
More than 11-13/16  
More than 7-7/8  
More than 11-13/16  
Unit: inch  
The front and top must remain open.  
CAUTION  
The obstacles must be no taller than the height of the outdoor unit.  
Installation in front-rear rows  
Installation with intakes facing outlets  
G
Installation with intakes facing  
intakes or outlets facing outlets  
More than 15-3/4  
More than 59-1/16  
More than 78-3/4  
Unit: inch  
The front and both sides must remain open.  
CAUTION  
21  
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07-115 SSHP_II 5/7/07 3:59 PM Page 22  
2-7. Dimensions of Snow Ducting  
Reference diagram for snow-proof vents (field supply)  
STK-BDRE80A for 2672R / 3072R / 3672R unit  
30-3/32  
1
2
3
4
5
6
Unit top, snow-proof vent  
Unit left side  
Unit right side  
4
Unit reverse side  
Unit reverse side  
Unit sides, reinforcement brackets for snow-proof vent  
1
Fastened by screws at 13 locations  
3-3/4  
11-29/32  
25-13/32  
17-15/32  
19-11/16  
3-31/32  
6
Fastened by screws at 3 locations  
(also on reverse side)  
5
2
Unit anchor hole  
5/8  
(6 – ø7 hole)  
Fastened by screw at 1  
1-21/32  
28-3/4  
location (also on reverse side)  
Unit: inch  
30-11/16  
STK-BDR140U for 4272R unit  
Fastened by screws at 13 locations  
30-3/32  
1
2
3
4
5
6
Unit top, snow-proof vent  
Unit left side  
Unit right side  
Unit reverse side  
4
Unit reverse side  
Unit sides, reinforcement brackets for snow-proof vent  
1
25-13/32  
3
11-7/8  
3-3/4  
19-11/16  
17-15/32  
2
3-31/32  
Fastened by screws at  
3 locations (also on reverse side)  
5/8  
1-13/16  
Unit: inch  
1-5/8  
28-3/4  
30-5/8  
Fastened by screw at  
1 location (also on reverse side)  
15-9/32  
22  
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07-115 SSHP_II 5/7/07 3:59 PM Page 23  
Dimensions of outdoor unit with snow-proof vents (field supply)  
2672R / 3072R / 3672R unit with STK-BDRE80A  
30-3/32  
Wind direction  
7-1/16  
Wind direction  
Wind direction  
Wind direction  
37  
11-29/32  
Wind direction  
Wind direction  
Unit: inch  
4272R unit with STK-BDR140U  
30-3/32  
7-1/16  
Wind direction  
Wind direction  
Wind direction  
24-7/8  
Wind direction  
37  
11-29/32  
Wind direction  
Wind direction  
Unit: inch  
23  
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07-115 SSHP_II 5/7/07 3:59 PM Page 24  
Reference diagram for snow-proof vents – 1  
Space requirements for setting – (1)  
C(H)2672R / 3072R / 3672R / 4272R with STK-BDRE80A & STK-BDR140U  
[Obstacle to the front of unit]  
[Obstacle to the rear of unit]  
Top is open:  
Top is open:  
(1) Single-unit installation (2) Obstacles on both sides  
(1) Single-unit installation  
Min. B  
Min. C  
(2) Multiple-unit installation (2 or more units)  
(3) Multiple-unit installation (2 or more units)  
Min. I  
Min. I  
Min. E  
Min. E  
Min. E  
Min. F  
Outdoor unit  
H
I
J
C(H)2672R / 3072R /  
3672R / 4272R  
Note:  
19-11/16 11-13/16 39-3/8  
C(H)2672R / 3072R /  
3672R / 4872R  
Outdoor unit  
In cases 2 and 3 the  
height of the obstacle  
must be no taller than  
the height of the  
A
B
C
D
E
F
5-29/32  
5-29/32  
11-13/16  
7-7/8  
11-13/16  
5-29/32  
7-7/8  
outdoor unit.  
Top is blocked by an obstacle:  
G
Min. M  
Top is blocked by an obstacle:  
Min. L  
Outdoor unit  
M
N
C(H)2672R / 3072R /  
3672R / 4272R  
39-3/8  
39-3/8  
Outdoor unit  
L
K
C(H)2672R / 3072R /  
3672R / 4272R  
19-11/16 5-29/32  
Unit: inch  
24  
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07-115 SSHP_II 5/7/07 3:59 PM Page 25  
Reference diagram for snow-proof vents – 2  
Space requirements for setting – (2)  
C(H)2672R / 3072R / 3672R / 4272R with STK-BDRE80A & STK-BDR140U  
[Obstacles to the front and rear of unit]  
The top and both sides must remain open. Either the obstacle to the front or  
the obstacle to the rear must be no taller than the height of the outdoor unit.  
(1) Single-unit installation  
Dimension Q  
If a snow protection duct is attached after the unit is  
installed, verify that dimension Q is 19-11/16 in. or more.  
Outdoor unit  
O
P
C(H)2672R / 3072R /  
39-3/8  
5-29/32  
3672R / 4272R  
(2) Obstacles on both sides  
Min. 11-13/36  
Min. 11-13/16  
[Installation in front-rear rows]  
• The top and both sides must remain open. Either the obstacle to the front or the obstacle  
to the rear must be no taller than the height of the outdoor unit.  
0
Min. 11-13/16  
Min. 39-3/8  
Min. 7-7/8  
Min. 59-1/16  
Min. 78-3/4  
Dimension Q  
If a snow protection duct is  
attached after the unit is  
installed, verify that dimension  
Q is 19-11/16 in. or more.  
Unit: inch  
25  
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07-115 SSHP_II 5/7/07 3:59 PM Page 26  
3. HOW TO INSTALL THE INDOOR UNIT  
I 4-Way Air Discharge Semi-Concealed Type  
(X Type)  
3-1. Suspending the Indoor Unit  
X
Hole-in-anchor  
Hole-in-plug  
Concrete  
Insert  
This unit uses a drain pump. Use a carpenter’s level to  
check that the unit is level.  
3-2. Preparation for Suspending  
(1) Fix the suspension bolts securely in the ceiling  
using the method shown in the diagrams (Figs. 3-1  
and 3-2), by attaching them to the ceiling support  
structure, or by any other method that ensures that  
the unit will be securely and safely suspended.  
Suspension bolt (M10 or 3/8")  
(field supply)  
Fig. 3-1  
(2) Follow Fig. 3-2 and Table 3-1 to make the holes in  
the ceiling.  
X
A (Ceiling opening)  
Unit: inch (mm)  
B
Table 3-1  
(Suspension bolt pitch)  
Length  
A
B
Type  
Drain hose  
side  
XH(W)2672R  
(PNR-XH2442)  
32-9/32  
(820)  
22-9/32  
(566)  
Grille center  
XH(W)3672R, XH(W)4272R  
(PNR-XH3642)  
43-11/16  
(1,110)  
33-11/16  
(856)  
(3) Determine the pitch of the suspension bolts using  
the supplied full-scale installation diagram. The  
diagram and table (Fig. 3-3 and Table 3-2) show  
the relationship between the positions of the sus-  
pension fitting, the unit, and the panel.  
Refrigerant  
tubing side  
Unit: inch  
Fig. 3-2  
Drain connection (other side)  
(VP25)  
Refrigerant tubing joint (gas tube side)  
Refrigerant tubing joint  
(liquid tube side)  
Suspension lug  
Unit: inch  
Fig. 3-3  
Unit: inch (mm)  
Table 3-2  
Length  
Type  
A
B
C
D
E
XH(W)2672R  
(PNR-XH2442)  
6-3/16  
(157)  
7-5/32  
(182)  
10-9/32  
(261)  
12-1/8  
(308)  
4-7/8  
(124)  
XH(W)3672R, XH(W)4272R  
(PNR-XH3632)  
6-3/16  
(157)  
7-5/32  
(182)  
11-15/32  
(291)  
13-1/16  
(338)  
4-7/8  
(124)  
26  
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07-115 SSHP_II 5/7/07 3:59 PM Page 27  
3-3. Placing the Unit Inside the Ceiling  
Full-scale installation diagram  
(printed on a cardboard packing)  
(1) When placing the unit inside the ceiling, determine  
the pitch of the suspension bolts using the  
supplied full-scale installation diagram. (Fig. 3-4)  
The size of the opening for the indoor unit can be  
confirmed by attaching the full-scale installation  
diagram beneath the unit. (Fig. 3-4)  
X
Full-scale installation  
diagram  
Tubing and wiring must be laid inside the ceiling  
when suspending the unit. If the ceiling is already  
constructed, lay the tubing and wiring into position  
for connection to the unit before placing the unit  
inside the ceiling.  
Fig. 3-4  
(2) The length of each suspension bolt must be  
appropriate for a distance between the bottom of  
the bolt and the bottom of the ceiling of 19/32 in.  
or more as shown in Fig. 3-4.  
Suspension bolt  
Suspension lug  
Nuts and washers  
(Use above and below)  
Upper  
Lower  
(3) Thread the 2 hexagonal nuts (field supply) and  
washers onto the 4 suspension bolts as shown in  
Fig. 3-5.  
Notch  
Double nuts  
Use 2 sets of nuts and washers (upper and lower),  
so that the unit will not fall off the suspension lugs.  
1-7/8 inch  
(4) Remove the protective cardboard used to protect  
the fan parts during transport.  
Fig. 3-5  
(5) Adjust the distance between the unit and surface  
of the ceiling. (1-7/8 in.) (Fig. 3-4)  
27  
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07-115 SSHP_II 5/7/07 3:59 PM Page 28  
3-4. Installing the Drain Piping  
Transparent part for  
checking drainage  
Hard PVC pipe  
(not supplied)  
Hose band  
(supplied)  
(1) Prepare standard hard PVC pipe for the drain and  
use the supplied drain hose and hose band to pre-  
vent water leaks.  
X
The PVC pipe must be purchased separately. The  
transparent part allows you to check drainage.  
(Fig. 3-6)  
Drain hose  
Packing  
Drain hose  
(supplied)  
adapter  
(supplied)  
(supplied)  
Tighten the hose clamps so  
CAUTION  
their locking nuts face upward.  
(Fig. 3-6)  
Fig. 3-6  
Drain insulator (supplied)  
(2) After checking the drainage, wrap the supplied  
packing and drain pipe insulator around the pipe.  
(Fig. 3-7)  
NOTE  
Ensure the drain pipe has a downward gradient (1/100  
or more) and that there are no water traps.  
Fig. 3-7  
Air bleeder  
CAUTION  
G
Do not install an air bleeder tube, as this may cause  
water to spray from the drain tube outlet. (Fig. 3-8)  
Fig. 3-8  
G
If it is necessary to increase the height of the drain  
pipe, the section directly after the connection port  
can be raised a maximum of 19-11/16 in. Do not  
raise it any higher than 19-11/16 in., as this could  
result in water leaks. (Fig. 3-9)  
11-3/4 in. or less (as short as possible)  
19-11/16 in. or less  
G
Do not install the pipe with an upward gradient from  
the connection port. This will cause drain water to  
flow backwards and leak when the unit is stopped.  
(Fig. 3-10)  
Fig. 3-9  
G
Do not apply force to the piping on the unit side  
Upward gradient  
when connecting the drain pipe. The pipe should  
not be allowed to hang unsupported from its  
connection to the unit. Fasten the pipe to a wall,  
frame, or other support as close to the unit as  
possible. (Fig. 3-11)  
Fig. 3-10  
G
Provide insulation for any drain pipe that is run  
indoors.  
Support  
pieces  
Fig. 3-11  
28  
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07-115 SSHP_II 5/7/07 3:59 PM Page 29  
3-5. Checking the Drainage  
After wiring and piping are completed, use the follow-  
ing procedure to check that the water will drain smooth-  
ly. For this, prepare a bucket and wiping cloth to catch  
and wipe up spilled water.  
X
Do not supply power to the  
WARNING  
unit until the tubing and  
wiring to the outdoor unit are  
completed.  
(1) Take off the tube cover and through the opening,  
slowly pour about 43 oz. of water into the drain pan  
to check drainage.  
(2) Do Test Run to check the drainage after complet-  
ing installation. When performing Test Run, be  
sure to observe the Test Run procedure.  
Refer to page 105.  
Be careful since the fan will  
CAUTION  
start turning when checking  
the drainage.  
5/16"(4 × 8 mm)  
tapping screw  
(3) After drain checking is finished, return the Opera-  
tion Selector switch to the RUN position (ON posi-  
tion ) and remount the tube cover.  
Tube cover  
To mount the tube cover, use  
WARNING  
5/16" (4 × 8 mm) tapping  
screws. Do not use long  
screws as they may puncture  
the drain pan and cause water  
leakage.  
Siphon  
Fig. 3-12  
29  
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07-115 SSHP_II 5/7/07 3:59 PM Page 30  
Screw  
Latch  
I Ceiling Panel  
Never touch or attempt to  
CAUTION  
move the air direction louver  
by hand or you may damage  
the unit. Instead, use the  
remote control unit if you want  
to change the direction or air  
flow.  
X
Air-intake grille  
3-6. Before Installing the Ceiling Panel  
(1) Remove the air-intake grille and air filter from the  
ceiling panel. (Figs. 3-13 and 3-14)  
Ceiling panel  
(a) Remove the 2 screws on the latch of the air-  
intake grille. (Fig. 3-13)  
Fig. 3-13  
(b) Press on the 2 latches of the air-intake grille  
with your thumbs in the direction of the arrow  
to open the grille. (Fig. 3-13)  
Air filter  
45°  
(c) With the air-intake grille open about 45°,  
remove the safety cord (hook on the grille  
side). (Fig. 3-14)  
Safety cord  
(d) Pull the air-intake grille towards you to remove  
it from the ceiling panel.  
(2) Pull down the two panel catches on the body of  
the indoor unit body. (Fig. 3-15)  
Unit body  
Fig. 3-14  
Ceiling panel  
Panel catch  
Panel catch  
Electrical  
component box  
(arrange facing downwards)  
(2 locations)  
Electrical  
component box  
Clamp  
Ceiling panel wiring  
connector  
Screws M5 with washer  
(supplied)  
Air filter  
Air-intake grille  
Fig. 3-15  
30  
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07-115 SSHP_II 5/7/07 3:59 PM Page 31  
3-7. Installing the Ceiling Panel  
(1) Lift the ceiling panel and position it to align the  
panel hook with the panel catch of the indoor unit.  
NOTE  
X
The ceiling panel must be mounted in the correct direc-  
tion. Note that the 2 catches of the panel differ in size.  
Confirm that the catches are correctly matched  
between the ceiling panel and the indoor unit body.  
(2) Next, check to see that the ceiling panel is prop-  
erly aligned with the seamline of the ceiling. If it is  
not, remove the ceiling panel and slightly readjust  
the indoor unit body to the proper suspension  
point.  
(3) When the ceiling panel has been properly aligned,  
use the supplied 4 mounting screws (M5) with  
washers to permanently fasten the ceiling panel.  
(4) Install the wiring connector from the ceiling panel  
to the connector in the electrical component box of  
the indoor unit. After installing the connector, use  
the clamp on the body of the indoor unit to secure  
the wiring.  
(5) Install the air filter and air-intake grille by perform-  
ing the steps in section 3-6 in reverse.  
NOTE  
Rehook the safety cord before closing the air-intake  
grille.  
3-8. When Removing the Ceiling Panel  
for Servicing  
When removing the ceiling panel for servicing, remove  
the air-intake grille and air filter, disconnect the wiring  
connector inside the electrical component box, and then  
remove the 4 mounting screws.  
31  
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For fresh air intake  
3-9. Duct for Fresh Air  
G
There is a duct connection part on side of the indoor  
unit. (Fig. 3-16)  
G
An optional air-intake plenum (including duct connection  
box and flange) can be attached to the indoor unit.  
X
Air-intake plenum  
Type  
PNR-XH2442  
(XH(W)2672R)  
CMB-GSJ80U  
PNR-XH3642  
(XH(W)3672R, XH(W)4272R)  
CMB-GSJ140U  
2-5/32  
(1) Accessories  
Detail of fresh air intake  
Unit: inch  
G
Check that the following parts are in the box when  
unpacking.  
Fig. 3-16  
Name  
ʻQʼty  
Remarks  
Cord with socket  
(9P)  
Connecting line. Not necessary for  
intaking fresh air.  
1
Screw  
(M5 × L5 in.)  
Air-intake filter  
(for fastening)  
4
7
Screw  
(M4 × L1/2 in.)  
Duct connection flange / box  
(for fastening)  
Duct connection box  
1
1
(for fresh air)  
)
(for connecting fresh air duct  
Duct connection flange  
(2) Installation  
Installation  
screws  
G
Installation steps (a) to (d) are the same for both the  
CMB-GSJ80U and the CMB-GSJ140U. The figure  
illustrates installation of air-intake plenum to the  
indoor unit. (Fig. 3-17)  
Socket cover  
Panel lead wire (8P)  
(a) Installing the air-intake plenum  
G
Set the air-intake plenum to the indoor unit taking care  
not to set it in the wrong direction. (Fig. 3-17)  
Clamper  
G
Fasten the air-intake plenum with the accessory screws.  
Air-intake  
plenum  
(M5 × L5 in., 4 pcs) (Fig. 3-17)  
8P socket (red)  
(electrical  
(b) Installing the duct connection box  
component box)  
G
Fasten the duct connection flange to the duct connec-  
8P socket (red)  
(ceiling panel side)  
tion box with the accessory screws.  
(M4 × L1/2 in., 4 pcs) (Fig. 3-18)  
G
Put the duct connection box into the rectangular hole of  
the air-intake plenum and fasten it to both sides of the  
indoor unit and plenum with the accessory screws.  
(M4 × L1/2 in., 3 pcs) (Fig. 3-18)  
Indoor unit  
(c) Installing the indoor unit  
G
Install the indoor unit to the ceiling. (Install the indoor  
unit according to items 3-1 to 3-6.)  
When installing in a pre-  
Fig. 3-17  
CAUTION  
existing location, install the  
indoor unit before installing  
the duct connection box.  
32  
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07-115 SSHP_II 5/7/07 3:59 PM Page 33  
(d) Installing the ceiling panel  
Duct  
connection  
flange  
G
Attach the ceiling panel to the chamber. Drawing the  
Duct connection box  
panel downwards sets the panel in position temporarily  
with the panel catch (at 2 locations).  
Installation screws  
(M4 × 1/2 in.)  
G
G
G
Remove the socket cover of the air-intake plenum and  
pass the 8P sockets through it. (Fix the panel lead wire  
with the chamber side clamp.) (Fig. 3-17)  
X
Panel catch  
Connect the 8P socket (electrical component box side)  
to the 8P socket (ceiling panel side) of the indoor unit  
electrical component box.  
Reattach the socket cover.  
Ceiling panel  
Fig. 3-18  
33  
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I Wall-Mounted Type (K Type)  
3-10. Removing the Wall Fixture from the Unit  
KH(S)2672R  
Remove and discard the set screws and take off the  
rear panel. (Fig. 3-19)  
Set screws for transportation only  
NOTE  
Fig. 3-19  
K
Tubing can be extended in 3 directions as shown in  
Fig. 3-20. Select the direction that provides the shortest  
run to the outside unit.  
Right-rear  
tubing  
Left-rear tubling  
(recommended)  
3-11. Selecting and Making a Hole  
KH(S)2672R  
Right tubing  
(1) Remove the rear panel from the indoor unit and  
place it on the wall at the location selected. Make  
sure the unit is horizontal using a carpenter’s level  
or tape measure to measure down from the ceiling.  
Fig. 3-20  
In case of left-rear or right-rear tubing  
(2) Determine which side of the unit you should make  
the hole. (Fig. 3-21)  
(3) Before making a hole, check carefully that no studs  
or pipes are directly run behind the spot to be cut.  
Center of  
left-rear  
Center of  
right-rear  
Also avoid areas where electri-  
cal wiring or conduits are  
located.  
CAUTION  
tubing hole  
tubing hole  
Fig. 3-21  
NOTE  
The above precautions are also applicable if tubing  
goes through the wall in any other location.  
Hole should be made at a slight downward slant to  
the outdoor side.  
(4) Using a sabre saw, key hole saw or hole-cutting  
drill attachment, cut a hole in the wall. See Table  
3-3 and Fig. 3-22.  
PVC pipe (locally purchased)  
Indoor  
side  
Outdoor  
side  
Table 3-3  
Hole Dia. (inch)  
3-3/16"  
Cut at slight angle  
Fig. 3-22  
Fig. 3-23  
(5) Measure the thickness of the wall from the inside  
edge to the outside edge and cut PVC pipe at a  
slight angle 1/4" shorter than the thickness of the  
wall. (Fig. 3-23)  
INSIDE  
OUTSIDE  
Wall  
Plastic cover  
(Field supply)  
PVC pipe  
Slight  
angle  
(6) Place the plastic cover over the end of the pipe (for  
indoor side only) and insert in the wall.  
(Fig. 3-24)  
Fig. 3-24  
34  
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07-115 SSHP_II 5/7/07 3:59 PM Page 35  
KH(S)3072R, KH(S)3672R  
One hole is required for the air conditioner tubing, and  
Tape  
may be either on the left or right side. (Also see section  
3-14. Preparing the Indoor Side Tubing.)  
Full-scale  
installation diagram  
(1) Tape the full-scale installation diagram on the wall  
at the location selected. Make sure the unit is  
horizontal using a level or tape measure to  
measure down from the ceiling. (Fig. 3-25)  
Fig. 3-25  
K
(2) Determine if the hole is to be drilled at the left or  
right hole location.  
(3) Before drilling a hole, check that there are no  
studs or pipes behind the determined location.  
Avoid any area where electrical  
CAUTION  
wiring or conduit is located.  
Also take this precaution if the  
tubing goes through a wall at  
any other location.  
NOTE  
Hole should be made at a slight downward slant to  
the outdoor side.  
(4) Using a sabre saw, key hole saw or 3-5/32 in.  
hole-cutting drill attachment, make a hole in the  
wall. The required minimum hole diameter for  
these models is 3-3/16 in. (Fig. 3-26)  
Indoor  
side  
Outdoor  
side  
(5) Measure the thickness of the wall from the inside  
edge to the outside edge and cut PVC pipe at a  
slight angle 1/4 in. shorter than the thickness of  
the wall. (Fig. 3-27)  
(6) Place the plastic cover over the end of the pipe,  
(for indoor side only) and insert in the wall.  
(Fig. 3-28)  
Fig. 3-26  
PVC pipe (locally purchased)  
Cut at slight angle  
Fig. 3-27  
INSIDE  
OUTSIDE  
PVC pipe  
Wall  
Plastic  
cover  
Slight  
angle  
Fig. 3-28  
35  
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KHH(S)2672R  
Remove and discard the set screws and take off the  
wall fixture. (Fig. 3-29)  
Wall fixture  
KHH(S)2672R  
(1) Tape the full-scale installation diagram on the wall  
at the location selected. Make sure the unit is hori-  
Set screws only for transportation  
Fig. 3-29  
K
zontal using a level or tape measure to measure  
down from the ceiling. (Fig. 3-30)  
Tape  
F
u
l
l
-
s
c
a
l
e
i
n
s
t
a
l
l
a
t
i
o
(2) Before drilling a hole, check that there are no studs  
or pipes behind the determined location.  
n
d
i
a
g
r
a
m
Avoid any area where electrical  
CAUTION  
wiring or conduit is located.  
Also take this precaution if the  
tubing goes through a wall at  
any other location.  
Fig. 3-30  
NOTE  
(3) Using a sabre saw, key hole saw or 3-5/32 in.  
hole-cutting drill attachment, make a hole in the  
wall. The required minimum hole diameter for  
these models is 3-3/16 in. (Fig. 3-31)  
Hole should be made at a slight dowward slant to the  
outdoor side.  
(4) Measure the thickness of the wall from the inside  
edge to the outside edge and cut PVC pipe at a  
slight angle 1/4 in. shorter than the thickness of  
the wall. (Fig. 3-32)  
Indoor  
side  
Outdoor  
side  
(5) Place the plastic cover over the end of the pipe,  
(for indoor side only) and insert in the wall.  
(Fig. 3-33)  
Fig. 3-31  
PVC pipe (locally purchased)  
Cut at slight angle  
Fig. 3-32  
INSIDE  
OUTSIDE  
PVC pipe  
Wall  
Plastic  
cover  
Slight  
angle  
Fig. 3-33  
36  
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07-115 SSHP_II 5/7/07 3:59 PM Page 37  
3-12. Installing the Rear Panel on the Wall  
KH(S)2672R  
Be sure to confirm that the wall is strong enough to suspend  
the unit.  
See either Item a) or b) below depending on the wall type.  
a) If Wooden Wall  
Fig. 3-34  
Fig. 3-35  
K
(1) Attach the rear panel to the wall with the 10 screws provid-  
ed. (Fig. 3-34)  
If you are not able to line up the holes in the rear panel  
with the beam locations marked on the wall, use toggle  
bolts to go through the holes on the panel or drill 3/16 in.  
dia. holes in the panel over the stud locations and then  
mount the rear panel.  
(2) Double-check with a ruler or carpenter’s level that the  
panel is level. This is important to install the unit properly.  
(Fig. 3-35)  
1-3/16  
"
or more  
(3) Make sure the panel is flush against the wall. Any space  
between the wall and unit will cause noise and vibration.  
3/16  
"
dia. hole  
b) If Block, Brick, Concrete or Similar Type Wall  
Rawl plug  
(Field supply)  
Make 3/16" dia. holes in the wall. Insert rawl plugs for appropri-  
ate mounting screws. (Fig. 3-36)  
KH(S)3072R, KH(S)3672R  
Fig. 3-36  
Confirm that the wall is strong enough to support the unit.  
a) If Wooden Wall  
Wall fixture  
(1) Attach the wall fixture to the wall with the 12 screws pro-  
vided. (Fig. 3-37) If you are not able to line up the holes in  
the wall fixture with the beam locations marked on the  
wall, use rawl plugs or toggle bolts to go through the holes  
on the panel or drill 3/16 in. dia. holes in the wall fixture  
over the stud locations.  
Fig. 3-37  
(2) Check with a tape measure or carpenter’s level that the  
wall fixture is level. This is important so that the unit is cor-  
rectly installed.  
(3) Make sure the wall fixture is flush against the wall. Any  
space between the wall and unit will cause noise and  
vibration.  
b) If Block, Brick, Concrete or Similar Type Wall  
Make 3/16 in. dia. holes in the wall. Insert rawl plugs for  
appropriate mounting screws. (Fig. 3-36)  
37  
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KHH(S)2672R  
wall fixture  
Confirm that the wall is strong enough to support the  
unit.  
a) If Wooden Wall  
(1) Attach the wall fixture to the wall with the 9 screws  
provided. (Fig. 3-38)  
Fig. 3-38  
If you are not able to line up the holes in the wall  
fixture with the beam locations marked on the wall,  
K
use rawl plugs or toggle bolts to go through the  
holes on the panel or drill 13/64 in. dia. holes in the  
panel over the stud locations and then mount the  
wall fixture.  
3/16 in.  
dia. hole  
(2) Check with a tape measure or carpenter’s level  
that the wall fixture is level. This is important so  
that the unit is correctly installed.  
Rawl plug  
(3) Make sure the wall fixture is flush against the wall.  
Any space between the wall and unit will cause  
noise and vibration.  
Fig. 3-39  
b) If the Wall is Brick, Concrete or Similar  
Drill 3/16 in. dia. holes in the wall. Insert rawl plugs for  
appropriate mounting screws. (Fig. 3-39)  
38  
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07-115 SSHP_II 5/7/07 3:59 PM Page 39  
3-13. Remove the Grille to Install the Indoor Unit  
Grille  
Air-intake grille  
KH(S)2672R  
Basically, these models can be installed and wired  
without removing the grille. If access to any internal  
part is needed, follow the steps given below:  
How to remove the grille  
K
(1) Set the 2 flaps in the horizontal position.  
(2) Unscrew the 3 screws. (Fig. 3-40a)  
(3) Remove the grille.  
Fig. 3-40a  
Air-intake grille  
(a) Hold both corners of the air intake grille, then  
pull out and up to open. (Fig. 3-40b)  
(b) Use a standard screwdriver to push up the 3  
tabs to remove the grille. (Fig. 3-40b)  
(c) Pull the lower part of the grille toward you to  
remove. (Fig. 3-40a)  
Fig. 3-40b  
How to replace the grille  
(1) Close the flaps.  
(2) Reinstall the grille into the lower part while aligning  
its tabs on the upper part. (Fig. 3-41a) Insert the  
tabs in the slots and push the lower part of the  
grille back into position.  
(3) Press at each of the 5 tabs to completely close the  
grille. Make sure that the grille and frame are firmly  
fitted together. (Fig. 3-41b)  
Fig. 3-41a  
Fig. 3-41b  
39  
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07-115 SSHP_II 5/7/07 4:00 PM Page 40  
KH(S)3072R, KH(S)3672R  
How to Remove the Grille  
(1) Remove the plastic cover. (Fig. 3-42)  
(2) Remove the clamp for the wiring connector.  
(Fig. 3-43)  
Plastic cover  
Screw  
(3) Disconnect the 2 wiring connectors. (Fig. 3-44)  
K
(4) Set the flap in the horizontal position. (Fig. 3-45)  
Fig. 3-42  
(5) Remove the 3 screws. (Fig. 3-45)  
(6) Remove the grille. (Fig. 3-45)  
NOTE  
When replacing the grille, be careful not to crush the  
lead wires between the grille and the frame.  
(Fig. 3-45)  
Clamp  
Screw  
Fig. 3-43  
Wiring  
connectors  
Fig. 3-44  
Grille  
Flap  
Frame  
Screws  
Fig. 3-45  
40  
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07-115 SSHP_II 5/7/07 4:00 PM Page 41  
Frame  
3-14. Preparing the Indoor Side Tubing  
KH(S)2672R  
Right tubing  
outlet  
Arrangement of tubing by directions  
(a) Right tubing  
The corner of the right frame needs to be cut by  
a hacksaw or the like. (Fig. 3-46)  
Fig. 3-46  
Tab  
Mounting slot  
K
(b) Right-rear or left-rear tubing  
In this case, the corner of the frame need not be  
cut.  
To mount the indoor unit on the rear panel:  
(a) Hang the 3 mounting slots of the unit on the  
upper tabs of the rear panel. (Fig. 3-47)  
Fig. 3-47  
KH(S)3072R, KH(S)3672R  
Tubing  
from the  
outdoor  
unit  
Tubing can be extended in 4 directions as shown in  
Fig. 3-54.  
Arrangement for Right-rear Tubing  
(a) Remove the 2 screws and slide out the side  
cover. (Fig. 3-48)  
Fig. 3-49  
Fig. 3-48  
(b) Extend the gas tube from the outdoor side and  
connect it directly to the mating tube inside the  
indoor unit. Use a flare nut. (Fig. 3-49)  
Hacksaw  
Arrangement for Right Tubing  
(a) Remove the 2 screws and take off the side cover.  
(Fig. 3-48)  
Fig. 3-50  
(b) Cut out the L-shaped tubing outlet using a  
hacksaw. (Fig. 3-50)  
Indoor unit  
(c) Using the L-shaped tube (field supply),  
connect tubing between the indoor and  
outdoor units. (Fig. 3-52)  
Left  
Right  
side  
cover  
Arrangement for Left and Left-rear Tubing.  
side  
Bottom  
cover  
Fig. 3-51  
cover  
(a) Remove the 4 screws (2 on each side) and take  
off both left and right side cover.  
(Fig. 3-51)  
(b) Remove 4 screws to remove the bottom cover.  
L-shaped  
tube  
(c) Using the L-shaped tube (field supply), connect  
tubing as in Fig. 3-53.  
L-shaped tube  
Fig. 3-53  
Fig. 3-52  
41  
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07-115 SSHP_II 5/7/07 4:00 PM Page 42  
KHH(S)2672R  
Left  
Tubing can be extended in 4 directions as shown in  
Fig. 3-54.  
tubing  
Right-rear  
tubing  
Left-rear  
tubing  
(Recommended)  
Arrangement for Left Tubing  
(a) Cut out the left tubing outlet. (Fig. 3-55)  
Arrangement for Right Tubing  
Right tubing  
Fig. 3-54  
K
(a) Cut out the right tubing outlet using a hacksaw.  
(Fig. 3-56)  
Arrangement for Left-rear and Right-rear Tubing  
(a) It is not necessary to cut a hole.  
Right tubing  
outlet  
Left tubing  
outlet  
3-15. Wiring Instructions  
General Precautions on Wiring  
Fig. 3-56  
Fig. 3-55  
(1) Before wiring, confirm the rated voltage of the  
unit as shown on its nameplate, then carry out  
the wiring closely following the wiring diagram.  
(2) Provide a power outlet to be used exclusively for  
each unit. A power supply disconnect and circuit  
breaker for overcurrent protection should be  
provided in the exclusive line.  
(3) To prevent possible hazards from insulation  
failure, the unit must be grounded.  
(4) All wiring must be connected tightly.  
(5) Do not allow wiring to touch refrigerant tubing,  
compressor, or any moving parts of the fan.  
Unauthorized changes in the  
internal wiring can be very  
dangerous. The manufacturer  
will accept no responsibility for  
any damage or misoperation  
that occurs as a result of such  
unauthorized changes.  
42  
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07-115 SSHP_II 5/7/07 4:00 PM Page 43  
3-16. Wiring Instructions for Inter-Unit Connections  
Rear  
Wall  
KH(S)2672R  
panel  
(1) Insert the inter-unit wiring (according to local  
electrical codes) into the through-the-wall PVC  
pipe. Run the wiring toward the indoor side allowing  
approx. 10 inches to extend from the wall face.  
(Fig. 3-57)  
Plastic  
cover  
Wiring  
K
10 in.  
(2) Route the inter-unit wiring from the back of the  
indoor unit and pull it toward the front for  
connection. (Figs. 3-58a and 3-58b)  
Fig. 3-57  
(3) Connect the inter-unit wiring to the corresponding  
terminals on the terminal plate (Figs. 3-58a and  
3-58b) while referring to the wiring diagram.  
Terminal  
plate  
(4) Be sure to secure the wiring with the provided  
clamp.  
How to remove the cover plate  
To access the terminal plate inside the indoor unit,  
follow these steps.  
Cover plate  
(1) Using a Phillips screwdriver, remove the screw on  
the cover plate. (Figs. 3-58a and 3-58b)  
(2) Remove the cover plate.  
Fig. 3-58a  
Inter-unit  
control line  
wiring  
Earth  
plate  
Lock nut  
Top of conduit  
connector  
Fig. 3-58b  
43  
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07-115 SSHP_II 5/7/07 4:00 PM Page 44  
(1) Insert the inter-unit wiring (according to local  
codes) into the through-the-wall PVC pipe. Run the  
wiring toward the indoor side allowing approx. 5" to  
extend from the wall face.  
KHH(S)2672R  
Rear  
Wall  
panel  
(Figs. 3-59a and 3-59b)  
Plastic  
cover  
Never fix the wiring by any  
CAUTION  
means before the indoor unit is  
fully seated on the rear panel.  
Wiring  
K
(2) Remove the side cover and the metallic cover.  
(Fig. 3-60 or 3-61, depending on model.)  
5"  
(3) Secure the conduit connector to the chassis with a  
lock nut. (Fig. 3-60 or 3-61)  
Fig. 3-59a  
(4) Give some play to the inter-unit wiring from the  
outdoor unit to the corresponding terminals on the  
terminal plate.  
KH(S)3072R, KH(S)3672R  
Wall fixture  
G Be sure to refer to the wiring  
CAUTION  
system diagram label inside  
the metallic cover and carry  
out the correct field wiring.  
Wrong wiring can cause the  
unit to malfunction.  
Wall  
Connector  
Wiring  
G Check local electrical codes  
and any specified wiring  
instructions or limitations.  
(5) Secure the metallic cover with its screw. Then  
replace the side cover.  
5"  
Fig. 3-59b  
KHH(S)2672R  
KH(S)3072R, KH(S)3672R  
Lock  
Metallic cover  
nut  
Plastic cover  
Metallic cover  
Screw  
Power line  
Lock  
nut  
Grounding  
line  
Look nut  
Connector  
Elbow  
Side cover  
conduit  
Fig. 3-61  
Fig. 3-60  
44  
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07-115 SSHP_II 5/7/07 4:00 PM Page 45  
KHH(S)2672R  
Cover  
(1) Shape the refrigerant tubing so that it can easily go into  
the wall hole. (Fig. 3-62)  
Refrigerant  
tubing  
If using a stepladder, be careful to  
CAUTION  
keep your balance and not fall off.  
To prevent the unit from damage  
and avoid personal injury, ask for  
someone’s help when feeding the  
tubing through the hole because  
the unit is heavy and difficult to  
hold in place.  
Inter-unit  
wiring  
Drain hose  
K
Fig. 3-62  
b
(2) Push the wiring, refrigerant tubing, and drain hose  
through the hole in the wall. Adjust the indoor unit so it is  
securely seated on the rear panel.  
a
b / a = 0.7 or more  
Pipe bending tool  
(3) Carefully bend the tubing (if necessary) to run along the  
wall in the direction of the outdoor unit and then tape as  
far as the fittings.  
Fig. 3-63  
The air conditioner’s performance  
CAUTION  
will deteriorate if a tube is crushed.  
To prevent crushing of tubing,  
avoid sharp bends. Use a pipe  
bending tool to bend tubes.  
(Fig. 3-63)  
Insulation  
(Field supply)  
Fig. 3-64  
Refrigerant tubing  
(4) Connect the refrigerant tubing to the outdoor unit. (After  
performing a leak test on the connecting part, insulate it  
with tubing insulation. (Fig. 3-64)) Also, refer to Section  
10-5. Connecting Tubing between Indoor and Outdoor  
Units.  
Conduit  
Drain hose  
Inter-unit wiring  
(5) Assemble the refrigerant tubing, drain hose, and  
inter-unit wiring as shown in Fig. 3-65.  
Fig. 3-65  
Liquid  
tube  
KH(S)3072R, KH(S)3672R  
Wall  
(1) Shape the narrow refrigerant tube and drain  
hose in the desired direction so that they can  
easily go into the wall hole. (Fig. 3-66)  
Indoor  
unit  
(2) Push the wiring, narrow tube, and drain hose  
through the hole in the wall.  
Wall fixture  
Drain hose  
Fig. 3-67  
Fig. 3-66  
(3) Bend the tubing (if necessary) to run along the wall in  
the direction of the outdoor unit, then tape as far as the  
fittings. The drain hose should come straight down the  
wall to a point where water runoff won't stain the wall.  
Mounting plate  
Or  
(4) Hang the indoor unit on the wall fixture. (Fig. 3-67)  
(5) Install the mounting plate to secure the indoor unit  
solidly to the wall. The plate can be positioned in either  
of the 2 ways shown. (Fig. 3-68)  
Screws  
Fig. 3-68  
45  
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07-115 SSHP_II 5/7/07 4:00 PM Page 46  
Cover  
3-17. Shaping the Tubing  
KHH(S)2672R  
Refrigerant  
tubing  
(1) Shape the refrigerant tubing so that it can easily go  
into the hole. (Fig. 3-69)  
Inter-unit  
wiring  
(2) Push the wiring, refrigerant tubing and drain hose  
through the hole in the wall. Adjust the indoor unit  
Drain hose  
so it is securely seated on the wall fixture.  
K
Fig. 3-69  
(3) Carefully bend the tubing (if necessary) to run  
along the wall in the direction of the outdoor unit  
and then insulate to the end of the fittings. The  
drain hose should come straight down the wall to a  
point where water runoff will not stain the wall.  
Insulating  
tape  
(4) Connect the refrigerant tubing to the outdoor  
unit.(After performing a leak test on the connection,  
insulate it with insulating tape. (Fig. 3-70)) Also,  
refer to Section 10-5. Connecting Tubing between  
Indoor and Outdoor Units.  
Fig. 3-70  
Refrigerant tubing  
Inter-unit wiring  
(5) Assemble the refrigerant tubing, drain hose and  
inter-unit wiring as shown in Fig. 3-71.  
Drain hose  
Fig. 3-71  
3-18. Installing the Drain Hose  
(1) The drain hose should be slanted downward on the  
outdoor side. (Fig. 3-72)  
Slant  
(2) Never form a trap in the course of the hose.  
Indoor  
unit  
Drain  
hose  
(3) If the drain hose will run in the room, insulate* the  
hose so that chilled condensation will not damage  
furniture or floors. (Fig. 3-73)  
Fig. 3-72  
* Foamed polyethylene or its equivalent is  
recommended.  
Condensation  
Do not supply power to the unit  
or operate it until all tubing and  
WARNING  
wiring to the outdoor unit are  
completed.  
Insulation material  
(field supply)  
must be used.  
Fig. 3-73  
46  
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07-115 SSHP_II 5/7/07 4:00 PM Page 47  
Front face  
I Ceiling-Mounted Type (T Type)  
3-19. Suspending the Indoor Unit  
(1) Place the full-scale diagram (supplied) on the  
Rear  
ceiling at the spot where you want to install the  
indoor unit. Use a pencil to mark the drill holes.  
(Fig. 3-74).  
Full-scale diagram  
Fig. 3-74  
NOTE  
Hole-in-anchor  
Hole-in-plug  
Since the diagram is made of paper, it may shrink or  
stretch slightly because of high temperature or  
humidity. For this reason, before drilling the holes  
maintain the correct dimensions between the markings.  
Concrete  
Insert  
T
(2) Drill holes at the 4 points indicated on the full-scale  
diagram.  
Suspension bolt (M10 or 3/8")  
(field supply)  
(3) Depending on the ceiling type:  
Fig. 3-75  
(a) Insert suspension bolts as shown in Fig. 3-75.  
or  
Ceiling tiles  
Ceiling support  
(b) Use existing ceiling supports or construct a  
suitable support as shown in Fig. 3-76.  
It is important that you use  
WARNING  
extreme care in supporting the  
indoor unit from the ceiling.  
Ensure that the ceiling is  
A
A
sufficiently strong enough to  
support the weight of the unit.  
Before hanging the ceiling unit,  
test the strength of each  
Fig. 3-76  
attached suspension bolt.  
(4) Screw in the suspension bolts, allowing them to  
protrude from the ceiling as shown in Fig. 3-76.  
The distance of each exposed bolt must be of  
equal length within 2 inches. (Fig. 3-77)  
unit  
Ceiling  
surface  
Fixture  
Fig. 3-77  
47  
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07-115 SSHP_II 5/7/07 4:00 PM Page 48  
(5) Before suspending the indoor unit, remove the 2  
screws on the latch of the air-intake grilles, open  
the grilles, and remove them by pushing the claws  
of the hinges as shown in Fig. 3-78. Then remove  
both side panels sliding them along the unit toward  
the front after removing the two screws which fix  
them. (Fig. 3-79)  
Pull out the  
air-Intake grille  
pushing claws  
of the hinges  
Hinge  
Screw  
Latch  
(6) Preparation for suspending the indoor unit. The  
suspension method varies depending on whether  
the unit is next to the ceiling or not.  
Air-intake grille  
(Figs. 3-80 and 3-81)  
T
Fig. 3-78  
Slide toward  
front side  
Side panel  
Fig. 3-79  
Suspension bolt  
(field supply)  
unit  
Ceiling surface  
Washer (supplied)  
Double nut  
Fixture  
(field supply)  
Fig. 3-80  
Suspension bolt  
(field supply)  
Washer (field supply)  
unit  
Washer (supplied)  
Double nut  
(field supply)  
Fig. 3-81  
48  
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07-115 SSHP_II 5/7/07 4:00 PM Page 49  
(7) Suspend the indoor unit as follows.  
(a) Mount a washer and two hexagonal nuts on  
each suspension bolt as shown in Fig. 3-82.  
Ceiling  
surface  
(b) Lift the indoor unit, and place it on the  
washers through the notches, to fix it in place.  
(Fig. 3-83)  
Washer  
Nut  
(field supply)  
(supplied)  
Suspension bolt  
(c) Tighten the two hexagonal nuts on each  
suspension bolt to suspend the indoor unit as  
shown in Fig. 3-84.  
Fig. 3-82  
NOTE  
T
A ceiling surface is not always level. Please confirm that  
the indoor unit is evenly suspended. For the installation  
to be correct, leave a clearance of about 3/8 in.  
between the ceiling panel and the ceiling surface and fill  
the gap with an appropriate insulation or filler  
material.  
(8) If the tubing and wiring are to go towards the rear  
of the unit, make holes in the wall. (Fig. 3-85)  
(9) Measure the thickness of the wall from the inside  
to the outside and cut PVC pipe at a slight angle to  
fit. Insert the PVC pipe in the wall. (Fig. 3-86)  
Fig. 3-83  
Fig. 3-84  
Indoor  
Outdoor  
side  
side  
Fig. 3-85  
PVC pipe (locally purchased)  
INSIDE  
OUTSIDE  
PVC pipe  
Wall  
Slight  
angle  
Cut at slight angle  
Fig. 3-86  
49  
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07-115 SSHP_II 5/7/07 4:00 PM Page 50  
3-20. Duct for Fresh Air  
Duct connection port  
(Knock-out hole)  
There is a duct connection port (knock-out hole) at the  
right-rear on the panel top of the indoor unit for drawing  
in fresh air. If it is necessary to draw in fresh air, remove  
the cover by knocking it out and connect the duct to the  
indoor unit through the connection port. (Fig. 3-87)  
If connection at the right-rear on the panel top is not  
appropriate, another duct connection port can be made  
by cutting an opening on the left side of the rear panel of  
the indoor unit as shown in Fig. 3-88.  
Panel Top  
Fig. 3-87  
T
3-21. Installing the Drain Piping  
Right side  
Rear side  
G
Prepare a standard PVC pipe for the drain and  
connect it to the indoor unit drain pipe with the  
supplied hose clamps to prevent water leaks.  
A
4-11/32"  
G
Connect the drain piping so that it slopes downward  
B
from the unit to the outside. (Fig. 3-89)  
3-15/16"  
G
Never allow traps to occur in the course of the piping.  
G
Cut this portion  
Insulate any piping inside the room to prevent  
TH(W)2672R, THH(W)2672R TH(W)3672R, TH(W)4272R, THH(W)3672R  
dripping.  
A
B
3-15/16"  
7-3/32"  
G
Use the supplied drain pipe to connect the drain pipe  
with the drain outlet of the indoor unit.  
1-3/8"  
1-31/32"  
Fig. 3-88  
G
After connecting the drain pipe securely, wrap the  
supplied drain pipe insulator around the pipe, seal  
the gap at the drain socket with the supplied black  
insulation tape, then secure it with clamps.  
(Fig. 3-90)  
Min. 1/100  
G
After the drain piping, pour water into the drain pan to  
Good  
check that the water drains smoothly.  
Check local electrical codes  
CAUTION  
and regulations before  
obtaining wire. Also, check any  
specified instruction or  
limitations.  
Not good  
Fig. 3-89  
Drain pipe  
clamp  
Hard PVC pipe  
(not supplied)  
(supplied)  
Drain hose  
Packing  
Drain hose  
(supplied)  
adapter  
(supplied)  
(supplied)  
Fig. 3-90  
50  
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07-115 SSHP_II 5/7/07 4:00 PM Page 51  
I Concealed-Duct Type (U Type)  
3-22. Required Minimum Space for  
Installation and Service  
Electrical  
A (Suspension bolt pitch)  
Indoor Unit  
component box  
G
This air conditioner is usually installed above the  
ceiling so that the indoor unit and ducts are not  
visible. Only the air intake and air outlet ports are  
visible from below.  
Inspection  
access  
min.  
17-23/32  
9-27/32  
×
G
G
The minimum space for installation and service is  
shown in Fig. 3-91 and Table 3-4.  
17-23/32  
Refrigerant  
tubing  
min. 25-19/32  
It is recommended that space is provided (17-23/32  
× 17-23/32 in.) for checking and servicing the  
electrical system.  
Air outlet duct flange  
Unit: inch  
G
Fig. 3-92 and Table 3-5 show the detailed  
dimensions of the indoor unit.  
Fig. 3-91  
Unit: inch (mm)  
Table 3-4  
U
Type  
26  
36  
A (Length)  
42-17/32 (1,080)  
3
61-13/32 (1,560)  
Number of duct flanges  
4
Unit: inch (mm)  
Table 3-5  
No. of  
Dimension  
holes  
A
B
C
D
E
F
G
H
I
J
K
Type  
L
M
35-7/16  
9-21/32  
UH(W)2672R  
UH(W)3672R  
37-7/8  
39-3/8 42-17/32 11-13/32 2-23/32 38-19/32 39-31/32 5-1/8  
58-9/32 61-13/32 13-3/16 12-7/32 57-15/32 58-27/32 5-1/8  
9-27/32 12 16  
9-7/16 16 18  
(7-3/32×5)  
(9-21/32×1)  
54-11/32  
19-9/32  
56-25/32  
(9-1/16×6)  
(9-21/32×2)  
Refrigerant tubing joint (liquid tube)  
Refrigerant tubing joint (gas tube)  
Upper drain port (O.D. 1-1/4 in.)  
Bottom drain port (O.D. 1-1/32 in.)  
Suspension lug  
Power supply outlet (2-ø1-3/16 hole)  
Fresh air intake port (ø5-29/32 hole)  
13/32  
13/32  
L-ø1/4  
(Hole)  
11  
I
J
K
J
I
3/4  
3/4  
A (O.D.)  
H (Duct suspension bolt pitch)  
G (Ceiling opening dimension)  
Flange for the flexible air outlet duct (ø7-7/8 hole)  
Tube cover  
4-ø15/32  
(Hole)  
9
10  
11  
Electrical component box  
Flange for the air intake duct  
(Option or field supply)  
12-7/32  
31/32 8-9/32  
31/32  
6-7/8  
1-7/32  
1-7/32  
B
3-17/32  
M-ø1/8  
(Hole)  
10  
9
Inspection access  
(17-23/32  
×
17-23/32)  
(Field supply)  
1-3/8  
1-9/16  
C
D
(5-29/32)  
2-3/4  
5-1/8  
11-7/32  
(Suspension bolt pitch)  
E
E
E
F
2-15/16  
2-9/16  
Inspection access panel  
Ceiling  
Unit: inch  
Fig. 3-92  
51  
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07-115 SSHP_II 5/7/07 4:00 PM Page 52  
3-23. Suspending the Indoor Unit  
Hole-in-anchor  
Hole-in-plug  
Concrete  
Insert  
Depending on the ceiling type:  
• Insert suspension bolts as shown in Fig. 3-93  
or  
• Use existing ceiling supports or construct a suitable  
support as shown in Fig. 3-94.  
Suspension bolt (M10 or 3/8")  
(field supply)  
It is important that you use  
WARNING  
Fig. 3-93  
extreme care in supporting the  
indoor unit inside the ceiling.  
Ensure that the ceiling is strong  
enough to support the weight of  
the unit. Before hanging the unit,  
test the strength of each  
Ceiling tiles  
Ceiling support  
attached suspension bolt.  
U
(1) When placing the unit inside the ceiling,  
determine the pitch of the suspension bolts  
referring to the dimensional data on the previous  
page. (Fig. 3-92)  
Tubing must be laid and connected inside the  
ceiling when suspending the unit. If the ceiling is  
already constructed, lay the tubing into position for  
connection to the unit before placing the unit inside  
the ceiling.  
Fig. 3-94  
Suspension bolt  
Suspension lug  
Nuts and washers  
(2 sets)  
(2) Screw in the suspension bolts allowing them to  
protrude from the ceiling as shown in Fig. 3-93.  
(Cut the ceiling material, if necessary.)  
Upper  
Lower  
(3) Thread the 2 hexagonal nuts and washers (field  
supply) onto the 4 suspension bolts as shown in  
Figs. 3-95 and 3-96. Use 2 sets of nuts and wash-  
ers (upper and lower), so that the unit will not fall  
off the suspension lugs.  
Fig. 3-95  
Suspension bolt  
Hexagonal nut  
Fig. 3-96  
52  
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07-115 SSHP_II 5/7/07 4:00 PM Page 53  
G
Fig. 3-97 shows an example of installation.  
Bolt anchor  
Suspension bolt  
Air outlet duct  
Air-intake duct  
Air-outlet grille  
Ceiling material  
Indoor unit  
Air-intake grille  
U
Fig. 3-97  
3-24. Installing the Drain Piping  
(1) Prepare standard hard PVC pipe for the drain and  
use the supplied hose band to prevent water leaks.  
The PVC pipe must be purchased separately.  
When doing this, leave a gap between the drain  
socket of the unit and the PVC pipe to allow the  
drainage to be checked. The transparent drain  
pipe allows you to check drainage. (Fig. 3-98)  
Transparent part for  
checking drainage  
Hard PVC pipe  
(not supplied)  
Hose band  
(supplied)  
Drain hose  
Packing  
Drain hose  
(supplied)  
adapter  
(supplied)  
(supplied)  
Tighten the hose clamps so  
their locking nuts face upward.  
(Fig. 3-98)  
CAUTION  
Fig. 3-98  
Clamps (supplied)  
(2) After connecting the drain piping securely, wrap the  
supplied packing and drain pipe insulator around  
the pipe, then secure it with the supplied clamps.  
(Fig. 3-99)  
Drain insulator (supplied)  
NOTE  
Fig. 3-99  
Make sure the drain pipe has a downward gradient  
(1/100 or more) and that there are no water traps.  
53  
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07-115 SSHP_II 5/7/07 4:00 PM Page 54  
Air bleeder  
CAUTION  
G Do not install an air bleeder tube as this may cause  
Not good  
water to spray from the drain pipe outlet. (Fig. 3-100)  
G If it is necessary to increase the height of the drain  
pipe, the section directly after the connection port  
can be raised a maximum of 19-11/16 in.  
Fig. 3-100  
Do not raise it any higher than 19-11/16 in., as this  
could result in water leaks. (Fig. 3-101)  
11-13/16 in. or less  
19-11/16 in. or less  
Good  
G Do not install the pipe with an upward gradient from  
the connection port. This will cause the drain water  
to flow backward and leak when the unit is not  
operating. (Fig. 3-102)  
G Do not apply force to the piping on the unit side  
Fig. 3-101  
when connecting the drain pipe. The pipe should not  
be allowed to hang unsupported from its connection  
to the unit. Fasten the pipe to a wall, frame, or other  
support as close to the unit as possible. (Fig. 3-103)  
U
Upward gradient  
No good  
3-25. Checking the Drainage  
After wiring and drain piping are completed, use the  
following procedure to check that the water will drain  
smoothly. For this, prepare a bucket and wiping cloth to  
catch and wipe up spilled water.  
Fig. 3-102  
Support pieces  
(1) Connect power to the power terminal board (L1, L2  
terminal) inside the electrical component box.  
Good  
(2) Remove the tube cover and through the opening,  
slowly pour about 43 oz. of water into the drain pan to  
check drainage.  
Fig. 3-103  
(3) Short the check pin (CN5 white) on the indoor control  
board and operate the drain pump. Check the water  
flow and see if there is any leakage.  
Be careful since the fan will start  
when you short the pin on the  
indoor control board.  
CAUTION  
(4) When the check of drainage is complete, open the  
check pin (CN5 white) and remount the insulator and  
drain cap onto the drain inspection port.  
To mount the tube cover, use 5/16"  
CAUTION  
×
(4 8 mm) tapping screws.  
Do not use long screws as they  
may puncture the drain pan and  
cause water leak-age.  
54  
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07-115 SSHP_II 5/7/07 4:00 PM Page 55  
3-26. Increasing the Fan Speed  
Electrical component box  
Booster cable  
If external static pressure is too great (due to long  
Fan  
Booster cable  
motor  
extension of ducts, for example), the air flow volume  
may drop too low at each air outlet. This problem may  
be solved by increasing the fan speed using the  
following procedure:  
Fan motor socket  
(At shipment)  
(Booster cable installed)  
Fig. 3-104  
(1) Remove 4 screws on the electrical component box  
and remove the cover plate.  
(2) Disconnect the fan motor sockets in the box.  
(3) Take out the booster cable (sockets at both ends)  
clamped in the box.  
(4) Securely connect the booster cable sockets  
between the disconnected fan motor sockets in  
step 2 as shown in the Fig. 3-104.  
U
(5) Place the cable neatly in the box and reinstall the  
cover plate.  
I How to read the diagram  
Indoor Fan Performance  
36 Type  
The vertical axis is the external static pressure  
(Pa) while the horizontal axis represents the air  
flow (CFM).  
The characteristic curves for “HT”, “H”, “M” and “L”  
fan speed control are shown.  
The nameplate values are shown based on the “H”  
air flow. For the 26 type, the air flow is 636 CFM,  
while the external static pressure is 49 Pa at “H”  
position. If external static pressure is too great  
(due to long extension of duct, for example), the  
air flow volume may drop too low at each air outlet.  
This problem may be solved by increasing the fan  
speed as explained above.  
26 Type  
200  
150  
100  
50  
0.8  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
150  
100  
50  
0.5  
0.4  
0.3  
0.2  
0.1  
0
HT  
HT  
HH  
HH  
H
H
L
L
0
0
0
300  
500  
700  
900  
500  
1000  
Air Flow (CFM)  
Air Flow (CFM)  
HT : Using the booster cable  
H : At shipment  
NOTE  
Fig. 3-105  
55  
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07-115 SSHP_II 5/7/07 4:00 PM Page 56  
4. HOW TO INSTALL THE OUTDOOR UNIT  
4-1. Installing the Outdoor Unit  
G Use concrete or a similar material to create the base, and  
ensure good drainage.  
G Ordinarily, ensure a base height of 2 in. or more. If a drain  
pipe is used, or for use in cold-weather regions, ensure a  
height of 6 in. or more at the feet on both sides of the unit.  
(In this case, leave clearance below the unit for the drain  
pipe, and to prevent freezing of drainage water in cold-  
weather regions.)  
Drain port (2 locations)  
6-47/64  
4-3/8  
25-63/64  
8-5/8 5-29/32  
G Refer to the Fig. 4-1 for the anchor bolt dimensions.  
33/64  
33/64  
G Be sure to anchor the feet with the anchor bolts (M10). In  
addition, use anchoring washers on the top side. (Use  
large square 32 × 32 SUS washers with diameters of 10.)  
(Field supply)  
33/64  
33/64  
4-2. Drainage Work  
37-3/32  
Follow the procedure below to ensure adequate draining for  
the outdoor unit.  
G For the drain port dimensions, refer to the figure at right.  
G Ensure a base height of 6 in. or more at the feet on both  
sides of the unit.  
G When using a drain pipe, install the drain socket (optional  
part STK-DS25T) onto the drain port. Seal the other drain  
port with the rubber cap supplied with the drain socket.  
G For details, refer to the instruction manual of the drain  
socket (optional part STK-DS25T).  
Anchor bolt (M10)  
Drain port  
4-3. Routing the Tubing and Wiring  
Unit: inch  
G The tubing and wiring can be extended out in 4 directions:  
Fig. 4-1  
front, rear, right, and down.  
G The service valves are housed inside the unit. To access  
them, remove the inspection panel. (To remove the inspec-  
tion panel, remove the 3 screws, then slide the panel  
downward and pull it toward you.)  
Inter-unit control wiring outlet  
Inspection panel  
(1) If the routing direction is through the front, rear, or right,  
use a nipper or similar tool to cut out the knockout holes  
for the inter-unit control wiring outlet, power wiring outlet,  
and tubing outlet from the appropriate covers A and B.  
Rear  
Cover B  
Right  
Cover A  
Front  
Power wiring outlet  
(2) If the routing direction is down, use a nipper or similar tool  
to cut out the lower flange from cover A.  
Down  
Tubing outlet  
G Route the tubing so that it does  
CAUTION  
not contact the compressor,  
panel, or other parts inside the  
unit. Increased noise will result if  
the tubing contacts these parts.  
Fig. 4-2  
G When routing the tubing, use a  
tube bender to bend the tubes.  
56  
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07-115 SSHP_II 5/7/07 4:00 PM Page 57  
5. ELECTRICAL WIRING  
5-1. General Precautions on Wiring  
(1) Before wiring, confirm the rated voltage of the unit  
(7) Regulations on wire diameters differ from locality  
to locality. For field wiring rules, must follow your  
LOCAL ELECTRICAL CODES before beginning.  
You must ensure that installation complies with all  
relevant rules and regulations.  
as shown on its nameplate, then carry out the  
wiring closely following the wiring diagram.  
(2) Provide a power outlet to be used exclusively for  
each unit, and a power supply disconnect and  
circuit breaker for overcurrent protection should be  
provided in the exclusive line.  
(8) To prevent malfunction of the air conditioner  
caused by electrical noise, care must be taken  
when wiring as follows:  
(3) To prevent possible hazards from insulation  
failure, the unit must be grounded.  
G The remote control wiring and the inter-unit  
control wiring should be wired apart from the  
inter-unit power wiring.  
(4) Each wiring connection must be done in  
accordance with the wiring system diagram.  
Wrong wiring may cause the unit to misoperate or  
become damaged.  
G Use shielded wires for inter-unit control wiring  
between units and ground the shield on both  
sides.  
(5) Do not allow wiring to touch the refrigerant tubing,  
compressor, or any moving parts of the fan.  
(9) If the power supply cord of this appliance is dam-  
aged, it must be replaced by a repair shop  
appointed by the manufacturer, because special-  
purpose tools are required.  
(6) Unauthorized changes in the internal wiring can be  
very dangerous. The manufacturer will accept no  
responsibility for any damage or misoperation that  
occurs as a result of such unauthorized changes.  
(10) All wiring used must be Class 1.  
5-2. Recommended Wire Length and Wire Diameter for Power Supply System  
You must follow LOCAL ELECTRICAL CODES for wiring.  
Outdoor Unit  
* AWG = American Wire Gauge  
MOP  
Power Supply Terminal Base  
Trade Size  
of Conduit  
Trade Size  
of Conduit  
Model Name (A) Power Supply  
(Fuse or HACR  
type circuit breaker)  
Capacity Max. Wire Diameter  
AWG #12  
CH2672R  
3/4 in.  
3/4 in.  
3/4 in.  
3/4 in.  
30 A  
50 A  
50 A  
50 A  
50 A  
AWG #6  
AWG #6  
AWG #6  
AWG #6  
1-1/4 in.  
1-1/4 in.  
1-1/4 in.  
1-1/4 in.  
Max. length 64 ft.  
AWG #10  
CH3072R  
35 A (230/208 V)  
35 A (230/208 V)  
40 A  
Max. length 92 ft.  
AWG #10  
CH3672R  
Max. length 92 ft.  
AWG #10  
CH4272R  
Max. length 81 ft.  
MOP  
Power Supply Terminal Base  
Capacity Max. Wire Diameter  
Trade Size  
of Conduit  
Trade Size  
of Conduit  
Model Name (A) Power Supply  
(Fuse or HACR  
type circuit breaker)  
AWG #12  
C2672R  
3/4 in.  
3/4 in.  
3/4 in.  
3/4 in.  
25 A  
50 A  
50 A  
50 A  
50 A  
AWG #6  
AWG #6  
AWG #6  
AWG #6  
1-1/4 in.  
1-1/4 in.  
1-1/4 in.  
1-1/4 in.  
Max. length 76 ft.  
AWG #10  
C3072R  
30 A (230/208 V)  
30 A (230/208 V)  
35 A  
Max. length 99 ft.  
AWG #10  
C3672R  
Max. length 99 ft.  
AWG #10  
C4272R  
Max. length 81 ft.  
57  
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07-115 SSHP_II 5/7/07 4:00 PM Page 58  
Indoor Unit  
MOP  
(Fuse or HACR  
type circuit breaker)  
(B) Power Supply Trade Size  
Type  
AWG #14  
of Conduit  
X, K, T, U  
Max. length 67 ft.  
3/4 in.  
15 A  
Control Wiring  
(C) Inter-Unit Control Wiring  
(D) Remote Control Wiring  
(E) Control Wiring For Group Control  
AWG #18  
Use high voltage wire (300 V)  
*2  
2
*2  
2
*1  
AWG #18 (0.75 mm )  
AWG #18 – (0.75 mm )  
Max. 3,300 ft.  
Max. 1,650 ft.  
Max. 1,650 – ft. (Total)  
*1  
With ring-type wire terminal.  
Wire joint connection.  
*2  
5-3. Wiring System Diagrams  
Basic wiring diagram for standard control  
Outdoor unit  
INV unit  
A
L1  
L2 208 / 230 V, 60Hz  
Power supply  
Inter-unit power line  
208 / 230 V, 60 Hz  
L1  
L2  
Indoor  
unit  
B
Grounding line  
1
2
1
2
G
G
Grounding line  
C
U1  
U2  
U1  
U2  
Remote  
controller  
D
Ground  
1
1
2
WHT  
BLK  
2
CH Type  
8P terminal board  
NOTE  
(1) Refer to Section 5-2. Recommended Wire Length  
and Wire Diameter for Power Supply System for  
the explanation of “A”, “B”, “C”, “D”, and “E”, in the  
above diagrams.  
U1 U2 1  
2
G L1 L2  
Inter-unit Inter-unit  
control wiring power wiring  
Power wiring  
(2) Inter-Unit Control Wiring (C) and remote control-  
ler wiring (D), (E) have no polarity. But for other  
wiring, respect polarity. Be sure to connect as  
shown in the Wiring System Diagram.  
X, T, U Type  
5P terminal board  
(3) In case of separate supply connection to indoor  
unit, over current protection must be provided  
between power source and indoor unit.  
1
2
G
U1 U2  
Inter-unit  
Inter-unit  
Remote  
power wiring control wiring controller wiring  
K Type  
4P terminal board  
MAXIMUM OVER CURRENT PROTECTION 15 A  
(FUSE OR HACRTYPE CIRCUIT BREAKER)  
U1 U2  
Inter-unit  
control wiring power wiring  
1
2
G
Inter-unit  
Remote  
controller wiring  
58  
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07-115 SSHP_II 5/7/07 4:00 PM Page 59  
Stranded wire  
Loose wiring may cause the  
WARNING  
terminal to overheat or result  
in unit malfunction. A fire  
hazard may also exist.  
Ring  
pressure  
terminal  
Therefore, ensure that all  
wiring is tightly connected.  
When connecting each power wire to the correspond-  
ing terminal, follow the instructions on “How to connect  
wiring to the terminal” and fasten the wire securely with  
the fixing screw of the terminal plate.  
Fig. 5-1  
Special  
washer  
Screw  
Ring pressure  
terminal  
Screw and  
5-4. How to Connect Wiring to the Terminal  
Special washer  
Terminal plate  
Wire  
I For stranded wiring  
Ring  
pressure  
terminal  
(1) Cut the wire end with a wire cutter or wire-cutting  
pliers, then strip the insulation to expose the  
stranded wiring about 3/8 in. (Fig. 5-1)  
Wire  
Fig. 5-2  
(2) Using a Phillips head screwdriver, remove the ter-  
minal screw(s) on the terminal plate.  
(3) Using a ring connector fastener or pliers, securely  
clamp each stripped wire end with a ring pressure  
terminal. (Fig. 5-1)  
(4) Place the ring pressure terminal, and replace and  
tighten the removed terminal screw using a  
screwdriver. (Fig. 5-2)  
59  
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07-115 SSHP_II 5/7/07 4:00 PM Page 60  
6. HOW TO INSTALL THE WIRED REMOTE CONTROLLER  
(OPTIONAL PART)  
6-1. Installation Site Selection  
3-21/32 in. or more  
4-29/32 in. or more  
(from wall)  
Spacer  
(when continuous  
G Install the remote controller at a height of between  
installation)  
3–5 ft. above the floor.  
G Do not install the remote controller in a place where  
it will be exposed to direct sunlight or near a  
window or other place where it will be exposed to  
the outside air.  
3-17/32 in. or more  
4-29/32 in. or more  
Wall  
(from wall)  
(when continuous  
installation)  
G Be sure to install the remote controller vertically,  
such as on a wall.  
G The mounting position for the remote controller  
Hole for routing  
remote control  
should be located in an accessible place for control.  
cable  
G Never cover the remote controller or recess it into  
JIS C8340  
1 switchbox  
(no cover)  
the wall.  
Drainage Work  
G When mounting the remote controller on a wall,  
Fig. 6-1  
refer to Figs. 6-1 and 6-2.  
Spacer  
RC  
(WD)  
3-17/32 in. or more  
4-29/32 in. or more  
Wall  
(from wall)  
(when continuous  
installation)  
Hole for routing  
remote control  
cable  
JIS CB8340  
2 switchboxes  
(no cover)  
Fig. 6-2  
60  
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07-115 SSHP_II 5/7/07 4:00 PM Page 61  
6-2. Wired Remote Controller Installation  
G Do not supply power to the unit or try  
WARNING  
to operate it until the tubing and wiring  
to the outdoor unit are completed.  
G Do not twist the control wiring with the  
power wiring or run it in the same  
metal conduit, because this may cause  
malfunction.  
CAUTION  
G Install the remote controller away from  
sources of electrical noise.  
G Install a noise filter or take other  
appropriate action if electrical noise  
affects the power supply circuit of the  
unit.  
G If local electrical codes allow, this  
remote controller can be mounted  
using a conventional wall box for flush  
mounting.  
(1) When you open the decorative cover, you will see  
two gaps under the remote controller. Insert a coin  
into these gaps and pry off the back case.  
(Fig. 6-4)  
Concealed box for 1  
Spacer  
M4 × 25  
Screws (2)  
RC  
(WD)  
(2) Attach the back case with the 2 small screws  
provided. Using a screwdriver, push open the cut-  
outs on the back case. These holes are for screws.  
Use the spacers and take care not to tighten the  
screws excessively. If the back case will not seat  
well, cut the spacers to a suitable thickness.  
(Fig. 6-3)  
Under case  
(Back case)  
Wired remote  
controller  
Decorative  
cover  
Fig. 6-3  
(3) Connect the remote controller wiring (2 wires) cor-  
rectly to the corresponding terminals in the  
electrical component box of the indoor unit.  
Control panel  
When wiring, do not connect  
the remote controller wires to  
the adjacent terminal block for  
the power wiring. Otherwise,  
the unit will break down.  
CAUTION  
Gap  
Gap  
Coin  
(4) To finish, fit the back tabs of the case into the  
remote controller and mount it.  
Fig. 6-4  
61  
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07-115 SSHP_II 5/7/07 4:00 PM Page 62  
6-3. Basic Wiring Diagram  
Carry out wiring correctly  
(incorrect wiring will damage  
the equipment).  
Shielded wire  
CAUTION  
Ground  
Ground  
Use shielded wires for inter-unit control wiring and  
ground the shield on both sides. (Fig. 6-5)  
Fig. 6-5  
Otherwise misoperation because of noise may occur.  
I Diagram of outer dimensions  
I Wiring procedure  
5/32  
Install the wiring according to the above wiring diagram.  
G Address setting is automatically executed after turn-  
ing on the system.  
An indoor unit address is assigned to each indoor  
unit.  
RC  
(WD)  
G Operation takes place successively at intervals of 1  
second, by using combinations of the address setting  
of each unit.  
4-23/32  
5/8  
Unit: inch  
62  
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07-115 SSHP_II 5/7/07 4:00 PM Page 63  
6-4. Wiring System Diagram for Group Control  
This diagram shows when several units (maximum  
of 8) are controlled by a remote controller (main  
unit).  
In this case, a remote controller can be connected  
at any indoor unit.  
Remote  
controller  
I Wiring procedure  
Wire according to the diagram at right:  
1 2  
G Address setting is executed automatically when  
Wire joint  
the outdoor unit is turned on.  
1 2  
Indoor unit  
No. 1  
U1 U2  
I Group control using 2 remote controllers  
It does not matter which of the 2 remote controllers  
you set as the main controller.  
Inter-unit  
control  
wiring  
When using multiple remote controllers (up to 2 of  
them can be used), one is the main remote  
controller and the other is the sub-remote  
controller.  
U1 U2  
Outdoor unit  
: Ground (earth)  
Remote  
controller  
(main)  
(sub)  
G To set up a sub-remote controller, change its  
remote control address connector (RCU. ADR)  
located on its PCB from main to sub position  
(main: when shipped from factory).  
RC  
(WD)  
Connection wiring  
for group control  
1 2  
1 2  
Wire joint  
1 2  
1 2  
1 2  
1 2  
Indoor unit  
Indoor unit  
Indoor unit  
Indoor unit  
No. 8  
No. 1  
No. 2  
No. 3  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
Outdoor unit  
Outdoor unit Outdoor unit Outdoor unit  
: Ground (earth)  
63  
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07-115 SSHP_II 5/7/07 4:00 PM Page 64  
6-5. Wiring System Diagram for Multiple Remote  
Controllers  
I When Installing Multiple Remote Controllers  
Remote controller  
Remote controller  
address connector  
This multiple remote controller system is used for  
operating the unit(s) at different positions. (A maximum  
of 2 remote controllers can be installed.)  
Main  
RCU check  
Sub  
G Setting method  
To execute this control, make the setting according  
to the following procedure.  
RCU. ADR  
(1) Of the 2 installed remote controllers, make 1 the  
main remote controller (factory-shipped state).  
(2) On the other remote controller, change the address  
connector on the PCB from main to sub position.  
In this state, it functions as a sub-remote controller.  
G Basic wiring diagram  
Install wiring correctly  
(incorrect wiring will damage  
CAUTION  
the equipment).  
To operate 1 indoor unit with 2 remote controllers set  
at different places.  
RC  
(WD)  
6-6. How to Switch the Indoor Temperature Sensor  
(main)  
(sub)  
(Option)  
The indoor unit and the remote controller both contain  
an indoor temperature sensor. The sensors on either  
unit can be used but normally only the sensor set on  
the indoor unit is used. However, use the following  
procedure if you must use the sensor on the remote  
controller.  
1 2  
1 2  
Remote control cable  
(wire it at the  
Remote control  
cable terminal  
board  
1 2  
installation site)  
Indoor unit  
(1) Press and hold the  
at least 4 seconds.  
+
+
buttons for  
Earth  
Note: The Unit No. first displayed is the main  
indoor unit address for group control.  
NOTE  
Note: Do not press the  
button.  
*1 If using 2 remote controllers, either one (main or  
sub-remote controller) can be used to make settings  
but only the main unit functions as the remote  
controller sensor.  
(2) Select CODE NO. 32 with the Temp. setting (  
buttons.  
)
/
(3) Change the set data from 0000 to 0001 with the  
Timer (  
)
/
buttons.  
*2 The remote controller sensor will not function during  
group control unless the group address is set in the  
main remote controller indoor unit.  
(4) Press the  
button. (Setting is OK if the blinking  
display changes to a lit up display.)  
*3 Do not use the remote controller switch for the  
remote control sensor if the remote sensor is being  
used jointly with the remote controller switch.  
(5) This is the usual off condition. At this time,  
(remote controller) appears on the LCD display.  
64  
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07-115 SSHP_II 5/7/07 4:00 PM Page 65  
6-7. Trouble Diagnostics  
(1) Contents of remote controller switch alarm display  
ON:  
Blinking:  
Wired  
OFF:  
Wireless  
remote  
control  
display  
remote controller  
receiver display  
Possible cause of malfunction  
Serial commu-  
nication errors  
Mis-setting  
Remote controller is  
detecting error signal from  
indoor unit  
Error in receiving serial communication signal  
(Signal from main indoor unit in case of group control)  
E01  
Outdoor system address, indoor system address, or indoor unit  
individual/main/sub setting is not set  
(Automatic address setting is not completed)  
Auto address is not completed  
Error in transmitting serial communication signal  
E02  
E03  
E08  
E09  
E10  
Indoor unit is detecting error signal from remote controller (and system controller)  
Indoor unit address setting is duplicated  
Remote controller setting is duplicated  
Improper setting of indoor  
unit or remote controller  
Indoor unit is detecting error  
Error in transmitting serial communications signal  
signaled from signal option  
Error in receiving serial communications signal  
E11  
E14  
Setting error  
Main unit duplication in simultaneous-operation multi control  
(detected by outdoor unit)  
Indoor unit is detecting error  
signaled from outdoor unit  
Error in receiving serial communications signal  
E04  
E05  
E06  
Error in transmitting serial communications signal  
Outdoor unit is detecting  
error signaled from indoor  
unit  
Error in receiving serial communications signal (including unit  
quantity verification failure)  
RC  
(WD)  
Error in transmitting serial communications signal  
E07  
Automatic address setting  
failed  
Indoor unit capacity too low  
E15  
E16  
Indoor unit capacity too high  
No indoor units connected  
E20  
An indoor unit detected  
trouble in the signal from  
another indoor unit  
Error in transmitting serial communications signal  
Error in receiving serial communications signal  
Communications failure with MDC  
E17  
E18  
E31  
Communications trouble  
between units  
Mis-setting  
Setting error  
Indoor unit group settings error  
L01  
L02  
L03  
L04  
L07  
L08  
L09  
L10  
L11  
L13  
Indoor/outdoor unit type mismatch  
Simultaneously  
Main unit duplication in group control (detected by indoor unit)  
Outdoor unit address duplication (system address)  
Group wiring connected for independent indoor unit  
Address not set or group not set  
Simultaneously  
Simultaneously  
Indoor unit capacity not set  
Outdoor unit capacity not set or setting error  
Miswiring in group control wiring  
Simultaneously  
Indoor unit type setting error (capacity)  
Continued  
65  
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07-115 SSHP_II 5/7/07 4:00 PM Page 66  
Wired  
remote  
control  
display  
Wireless  
remote controller  
receiver display  
Possible cause of malfunction  
Ceiling panel connection failure  
P09  
P01  
Indoor protection  
Activation of  
protective  
device  
Fan protective thermostat  
Alternately  
Float switch  
P10  
P03  
P04  
P05  
P15  
P19  
P20  
P22  
P26  
P29  
P31  
H01  
F01  
F02  
F10  
F04  
F06  
F07  
F08  
F12  
F29  
Discharge temperature trouble  
High pressure switch or compressor motor thermal protector is activated.  
Open phase detected, AC power trouble  
No gas  
Outdoor protection  
4-way valve locked  
High cooling load  
Alternately  
Outdoor fan trouble  
Inverter compressor trouble (HIC PCB)  
Inverter compressor trouble (MDC)  
Simultaneous-operation multi control trouble  
Compressor current failure (overload)  
Indoor heat exchanger temperature sensor (E1)  
Indoor heat exchanger temperature sensor (E2)  
Indoor temperature sensor  
Thermistor  
fault  
Thermistor open circuit  
• Short circuit (indoor)  
Alter.  
Alter.  
RC  
(WD)  
Discharge temperature (TD)  
Thermistor open circuit  
• Short circuit (outdoor)  
Outdoor heat exchanger temperature (C1)  
Outdoor heat exchanger temperature (C2)  
Outdoor air temperature (TO)  
Intake temperature (TS)  
Indoor EEPROM error  
Simul.  
Outdoor EEPROM error  
F31  
Simul.  
66  
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07-115 SSHP_II 5/7/07 4:00 PM Page 67  
(2) LED Indicator Messages on Outdoor Control PCB  
LED 1  
LED 2  
Remarks  
Power ON sequence  
1. No communication from indoor units in system  
If it is not possible to  
advance to 3, repeats 1 → 2.  
At 3, changes to normal  
control.  
2. Communication received from 1 or more indoor units in system  
3. Regular communication OK (Capacity and unit quantity match)  
Normal operation  
Displayed during automatic  
EEPROM error (F31)  
address setting 1 and initial  
communication. After these are  
completed, alarm F31 is displayed.  
(0.25/0.75)  
(0.75/0.25)  
Pre-trip (insufficient gas)  
Pre-trip (P20)  
P03  
Pre-trip (other)  
Alternate blinking during alarms  
LED 1 blinks M times, then LED 2 blinks N times.  
The cycle then repeats.  
Alarm  
6: L alarm  
M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm  
N = Alarm No.  
* Refer to “1. Examples of alarm display” below.  
Insufficient gas indicator  
Refrigerant recovery mode  
RC  
(WD)  
Automatic address setting  
Automatic address setting in progress  
Blinking alternately  
Automatic address setting alarm (E15)  
(0.25/0.75)  
(0.75/0.25)  
(0.25/0.75)  
(0.75/0.25)  
Blinking simultaneously  
Blinking simultaneously  
Blinking simultaneously  
Automatic address setting alarm (E20)  
Automatic address setting alarm (Other than E15 and E20)  
:
:
ON  
Blinking (0.25/0.75) indicates that the lamp illuminates for 0.25 seconds, and then is OFF for 0.75 seconds.  
Unless otherwise indicated, the blinking is (0.5/0.5).  
:
OFF  
(3) Examples of alarm display (other than E15, E16, and E20)  
→
Alarm / Display  
LED 1  
Alternately  
LED 2  
→
( Blinks 2 times )  
(Blinks 3 times)  
(Blinks 4 times)  
(Blinks 5 times)  
(Blinks 31 times)  
(Blinks 1 time)  
(Blinks 2 times)  
(Blinks 3 times)  
P03  
P04  
P05  
P31  
H01  
H02  
H03  
•
(
(
(
)
)
)
"
"
"
(Blinks 3 times)  
(
(
)
)
"
"
•
(Blinks 4 times)  
(Blinks 4 times)  
(Blinks 7 times)  
(Blinks 13 times)  
E04  
•
•
(Blinks 5 times)  
F07  
•
•
Note:  
(Blinks 6 times)  
L13  
•
This table shows example alarms. Other alarms  
may also be displayed.  
•
67  
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07-115 SSHP_II 5/7/07 4:00 PM Page 68  
7. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER  
(ACCESSORY PART / OPTIONAL PART)  
IMPORTANT  
When using this air conditioner with the wireless  
remote controller it may sometimes be  
impossible to change the operation modes while  
other indoor unit is running.  
When this happens, a double beep tone sounds,  
the (operation lamp) lights up, and the  
(Timer  
lamp) and (Standby lamp) blink alternately.  
Operation is the same even during (AUTO mode)  
automatic cooling or heating.  
A beep tone sounds 5 times and no changes can  
be made when any of the ON/OFF, MODE, Tem-  
perature setting buttons were pressed while set  
under central control by the system controller.  
7-1. Wireless Remote Controller Installation  
The remote controller can be operated from either a  
non-fixed position or a wall-mounted position.  
To ensure that the air conditioner operates correctly,  
do not install the remote controller in the following  
places:  
In direct sunlight.  
Behind a curtain or other place where it is covered.  
More than 26 ft. away from the air conditioner.  
In the path of the air conditioner’s airstream.  
Where it may become extremely hot or cold.  
Where it may be subject to electrical or magnetic  
interference.  
RC  
(WL)  
Put on  
1
Screws for fixture  
Truss-head  
tapping screws  
(4 × L5/8")  
Mounting cradle  
(1) If Wall-mounted Fixed Position  
Push  
2
Install the remote controller at a convenient  
location on a nearby wall. However, before  
attaching the remote controller mounting cradle,  
check that the remote controller can operate from  
the desired wall position. (Fig. 7-1)  
Fig. 7-1  
How to Install Batteries  
See Fig. 7-2.  
(1) Press and slide the lid on the back of the remote  
controller in the direction of the arrow.  
(2) Install two AAA alkaline batteries. Make sure the  
batteries point in the direction marked in the  
battery compartment.  
ACL button  
Cover  
(3) Press the ACL button, then replace the lid. If you  
press it, the current time, ON time, and OFF time  
are all reset to 0:00.  
Fig. 7-2  
68  
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07-115 SSHP_II 5/7/07 4:00 PM Page 69  
7-2. Room Temperature Sensor Setting  
The room temperature sensors are built into the indoor  
unit and the wireless remote controller. Either of these  
room temperature sensors can operate.  
The system is shipped from the factory set to the  
indoor unit sensor. To switch to the remote controller  
sensor, press the sensor switching button located  
inside the remote controller cover and check that A/C  
SENSOR on the LCD display panel goes out.  
ADR  
SET  
CL  
ACL  
SENSOR  
Sensor button  
NOTE  
If the sensor switch is set to the remote controller side,  
but no room temperature data is sent to the main unit  
for 10 minutes, the sensor is automatically switched to  
the indoor unit side. As much as possible, install the  
remote controller facing the unit.  
Fig. 7-3  
7-3. Address Switches  
If you are installing more than 1 indoor unit (up to 6) in  
the same room, it is necessary for you to assign each  
unit its own address so they each can be operated by  
their remote controller.  
Up to 6 indoor units can be controlled separately  
through the address switches. The operating control  
has the reception address switch and the remote  
controller has the transmission address switch. This  
function is utilized by matching the transmission and  
reception address switches.  
Remote controller  
address display  
ADR  
ADR  
ADR  
ADR  
RC  
(WL)  
Address switch  
positions  
* Any address  
switch position  
available  
1 2 3  
1 2 3  
1 2 3  
4 5 6  
4 5 6  
4 5 6  
7-4. Setting the Model Code  
Flap display selector switch  
1
Make the slide switch settings in the battery compartment box of the remote controller depending on the type  
of indoor unit in which the wireless receiving unit is used.  
Operation mode switch  
2
In this Split System Air Conditioner set the switch to “A”.  
* The switch is factory set to “S” / “A”.  
* Always press the reset button after switching the setting.  
S
K
N
A
H
C
S
K
N
S
K
N
S
K
N
2
1
Operation  
1
2
mode switch  
X, T type  
K type  
U type  
A
H
C
A
H
C
A
H
C
Flap display  
selector switch  
Heat pump with  
Heat pump without  
Cooling only  
Auto mode (CH type)  
Auto mode  
Fig. 7-4  
69  
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07-115 SSHP_II 5/7/07 4:00 PM Page 70  
<RCS-SH80UA.WL>  
4-Way Air Discharge Semi-concealed Type  
(X Type)  
Air intake grille  
Mark section  
7-5. Indicator Section Installation  
(indicator section)  
X
Remove the ceiling panel and indicator cover  
and install the indicator section.  
(1) Remove the ceiling panel.  
Ceiling panel  
(2) Remove the corner cover behind the mark sec-  
tion. (3 screws)  
(3) Remove the mark section inside the ceiling panel.  
(2 screws)  
(4) Install the indicator section in the location where  
the mark section was attached. (2 screws)  
(5) Form the wire to match the panel ribs as shown  
in Fig. 7-6.  
Corner cover  
3 screws  
(6) Install the corner cover. (Restrain the wire with  
the corner cover.)  
Fig. 7-5  
7-6. Operating Controller Installation  
Pass the wiring through under the shaft.  
Do not twist the operating  
CAUTION  
controller wires together  
with the power supply  
wires. Doing so can result  
in malfunction.  
If electrical noise is induced  
in the unit power supply,  
take appropriate measures,  
for example installing a  
noise filter.  
Wiring  
2 screws  
Install the operating controller at the indoor unit intake  
port section.  
Indicator section  
(1) Fasten the operating controller to the indoor unit  
intake port section (electrical component box  
opposite side) with the 2 accessory screws  
(4 × L13/32 in.).  
Fig. 7-6  
(2) Connect the operating controller 2 wires (WHT,  
BLK) to the remote control wire (WHT) in the  
electrical component box. (For details on  
wiring, see “7-9. Electrical wiring” on page 72.)  
Operating  
controller  
(3) Install the ceiling panel.  
Electrical  
component box  
(4) Connect the indicator section and the operating  
Screws  
controller with the 6P connector (white).  
Fig. 7-7  
(5) Form the wires with vinyl clamps and fasten.  
(6) Connect the ceiling panel wiring connector (2P,  
3P) to the body connector in the electrical compo-  
nent box.  
(7) For details on test operation, see “Test Run.”  
70  
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07-115 SSHP_II 5/7/07 4:00 PM Page 71  
Ceiling-Mounted Type (T Type)  
7-7. Indicator Section Installation  
Remove the side panel to install the indicator section.  
(Fig. 7-8)  
Indicator section Panel  
Indicator section  
Side panel  
Cover B  
(1) Remove the side panel.  
(Not used when  
the indicator section  
is installed.)  
Open the air intake grille, remove the screw at  
one place and then remove the side panel by  
sliding it toward the front (arrow direction).  
(2) Remove cover A and cover B.  
Insert a standard screwdriver into the recess  
of cover A to remove cover A and cover B.  
(When removing the cover, take care not to  
scratch the panel.)  
Cover A  
Recess  
T
Air intake grille  
(3) Remove cover B from cover A.  
(4) Install the indicator section at cover A.  
(5) After passing through the lead wires, install cover  
A and the indicator section at the panel hole.  
(The protrusion part of cover A is fixed with the  
panel hole.)  
Cover A  
Recess  
Fig. 7-8  
(6) Bundle the lead wires along with the wiring of the  
louver motor.  
(7) Install the side panel.  
7-8. Operating Controller Installation  
Do not twist the operating  
controller wires together  
with the power supply  
wires. Doing so can result  
in malfunction.  
Install the operating controller on the top face of the air  
intake section (space between the fan motor and the  
electrical component box). (Fig. 7-9)  
CAUTION  
(1) Fasten the operating controller to the ceiling  
panel of the air intake section with the 2 supplied  
screws (4 × L13/32 in.).  
(2) Draw the lead wires into the electrical component  
box and connect the operating controller 2 wires  
(WHT, BLK) to the remote control wires in the  
electrical component box.  
If electrical noise is  
induced in the unit power  
supply, take appropriate  
measures, for example  
installing a noise filter.  
(3) Connect the indicator section and the operating  
controller using the 6P connector in the electrical  
component box.  
Operating controller  
Electrical component box  
Fig. 7-9  
71  
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07-115 SSHP_II 5/7/07 4:00 PM Page 72  
7-9. Electrical Wiring  
Signal receiving unit  
Indoor PCB  
Operating controller  
Indicator section  
W2  
W3  
(0.7 ft.)  
(4.3 ft.)  
CN2  
CN1  
CN1  
BLU  
YEL  
PNK  
RED  
GRY  
BLK  
BLU  
YEL  
PNK  
RED  
GRY  
BLK  
W1 (4.3 ft.)  
1
2
WHT  
BLK  
WL  
Relay connector  
Fig. 7-10  
Connection method  
(1) Connect W1 to the indoor PCB WL connector.  
(2) Connect W3 from the indicator section with W2  
from the operating controller using the relay  
connector.  
7-10. Test Run Switch  
The test run switch is located in the operating control unit.  
Regarding the test run, refer to section 11. Test Run.  
7-10-1. How to use the test run setting (X, T Types)  
(1) Set DIP switch [DS] No. 1 on the wireless receiver  
unit PCB from OFF to the ON position.  
All OFF( ) for  
initial settings.  
(2) Press the ON/OFF operation button on the  
wireless remote controller.  
1 2 3 4  
(3) Make a test run using the air conditioner in  
ADR  
1.TEST RUN  
2.PCB CHK.  
3.RCU: MAIN  
RCU: SUB  
4.NORMAL  
ALL •  
COOL or HEAT mode.  
1 2 3  
(4) During the test run, each of the 3 indicator lamps  
4 5 6  
on the indoor unit flash.  
(5) During the test run, the air conditioner runs  
continuously and the thermostat does not control  
the system.  
DIP switch  
No. 1  
Address  
switch  
Flap  
button  
ON/OFF  
operation  
button  
RC  
(WL)  
(6) After the test run, be sure to reset DIP switch No. 1  
back to the OFF position and check that no indicator  
lamps are blinking.  
Fig. 7-11  
(This receiver includes a 60-minute automatic OFF  
timer function in order to prevent continuous test run.)  
NOTE  
In case of 4-way air discharge type, test run operation is not possible without the ceiling panel installation.  
To protect the air conditioner from overloading, the outdoor unit will not start running for 3 minutes after  
power is applied or the air conditioner is turned off and then back on.  
When the air conditioner fails to start the test run, 1 or more of the 3 alarm indicator lamps on the indoor  
unit will flash (See next section).  
When the DIP switch is set to “TEST – ON,” temperature control from the wireless remote controller is disabled.  
Do not use this setting at any time other than for the test run. Doing so will place an excessive load on the system.  
To avoid placing an excessive load on the equipment, use this function only when conducting the test run.  
72  
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07-115 SSHP_II 5/7/07 4:00 PM Page 73  
7-11. Misoperation Alarm Indicators  
Alarm indicator lamps on the indoor unit indicate the  
error cause if the air conditioner fails to operate  
upon being switched on. The possible alarm indica-  
tions are given in Table 7-1. Fig. 7-12 shows the  
location of the alarm lamps on the indoor unit.  
(See Table 7-1 and Fig. 7-12.)  
Table 7-1  
Alarm  
Cause of Trouble  
(OPERATION  
(TIMER  
(STANDBY  
lamp)  
lamp)  
lamp)  
S.C. errors* between the indoor unit’s controller (PCB) and the remote  
controller.  
Compressor protector is working.  
S.C. errors between indoor and outdoor units.  
Indoor or outdoor thermistor is malfunctioning.  
Outdoor unit protector is working.  
Indoor unit protector is working.  
TEST RUN switch on the operation controller is in ON state.  
*
S.C.: Serial communications  
RC  
(WL)  
OPERATION TIMER  
lamp lamp  
STANDBY  
lamp  
Remote control  
receiver  
Fig. 7-12  
NOTE  
Stick the alarm message label accompanying the  
wireless remote controller on the electrical component  
box to indicate the cause of trouble for future reference.  
73  
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07-115 SSHP_II 5/7/07 4:00 PM Page 74  
<RCS-BH80UA.WL>  
If the signal receiving unit  
CAUTION  
is installed near a rapid-  
start or inverter type  
fluorescent lamp (neither  
one uses glow lamps),  
it may be impossible to  
receive signals from the  
wireless remote control-  
ler. To avoid signal inter-  
ference from fluorescent  
lamps, install the receiv-  
ing unit at least 6.6 ft.  
away from the lamps and  
install at a location where  
wireless remote controller  
signals can be received  
when the fluorescent  
lamps are on.  
7-12. Separate Type Signal Receiving Unit Installation  
Signal receiving unit  
M4 × L1 in  
Screws (2)  
Spacer  
Do not twist the operating  
CAUTION  
controller wires together  
with the power supply  
wires. Doing so can result  
in malfunction.  
A
R
P
L
C
C
L
U
B
S
•
:
C
R
S
H
U
U
K
N
B
.
T
E
T
R
N
C
O
U
R
:
M
A
A
L
IN  
M
1
4
2
5
3
A
D
R
6
If electrical noise is induced  
in the unit power supply,  
take appropriate measures,  
for example installing a  
noise filter.  
RC  
(WL)  
Switch box (no cover)  
Notch  
Cover plate  
Fig. 7-13  
If local electrical codes allow, this signal receving  
unit can be mounted using a conventional wall box  
for flush mounting.  
(1) Insert a standard screwdriver into the gap under  
the signal receving unit and pry off the cover (Fig. 7-14)  
(2) Attach the signal receving unit with the 2 small  
screws provided.  
Use the spacers and take care not to tighten the  
screws excessively.  
If the signal receving unit will not seat well, cut  
the spacers to a suitable thickness. (Fig. 7-13)  
(3) Connect the signal receving unit wiring (2 wires)  
correctly to the corresponding terminals in the  
electrical component box of the indoor unit.  
Fig. 7-14  
When wiring, do not connect the signal receiving unit  
wires to the adjacent terminal block for the power  
wiring. Otherwise, the unit will break down.  
CAUTION  
74  
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07-115 SSHP_II 5/7/07 4:00 PM Page 75  
When using the signal receiving unit on a wall with  
the front exposed, choose a wall surface that the  
signal receiving unit can be mounted on.  
Clamp (Supplied)  
About 3/32-1/8 in.  
Run the remote control  
cable through a notch  
in the upper case.  
(1) Insert a standard (minus) screwdriver into the slot on  
the lower side of the signal receiving unit and pry  
off the back case as shown in Fig. 7-14.  
(2) The wire routing at the signal receiving unit  
comes out of the upper case (thin portion at  
upper center) so use nippers or a similar tool to  
cut out a notch beforehand large enough for the  
remote control cable (option) to pass through as  
shown in Fig. 7-15.  
Connector  
Remote control cord  
(Option)  
Fig. 7-15  
Fig. 7-16  
Signal receiving unit  
Remote control cord (Option)  
(3) Remove the wire, which is connected prior to ship-  
ping, from the connector.  
Clamp  
(4) Connect the remote control cable (option) to the  
signal receiving unit connector as shown in Fig. 7-16  
after the clamp (supplied) with the unit is installed.  
(5) After arranging the wiring on the printed circuit  
board as shown in Fig. 7-17 so that it is contained  
within the signal receiving unit, attach the back  
case. At this time, arrange so that the head of the  
clamp faces the side.  
A
R
P
L
C
C
L
U
B
S
•
:
C
R
S
U
B
.
H
U
K
N
T
E
T
R
N
C
O
U
R
:
M
M
A
L
IN  
A
1
2
3
A
D
R
4
5
6
(6) Remove the cover plate and install the signal  
receiving unit using the 2 wood screws.  
(7) Fasten to the wall using the cord clip (supplied).  
(8) Reinstall the cover plate.  
Wood screws (2)  
Fig. 7-17  
Fig. 7-18  
To use the signal receiving unit while mounted on the  
ceiling, install by using the carrier for ceiling instal-  
lation supplied with the unit.  
A
(1) Remove the cover plate by inserting a standard  
(minus) screwdriver into the notch in the lower  
section and prying it off.  
(2) Cut out a section (3-3/4 × 2-1/32 in.) on the  
ceiling using the paper pattern (supplied) as a  
guide.  
RC  
(WL)  
(3) Run the wire through the mounting carrier and insert  
into the installation hole as shown in Fig. 7-19.  
(4) Fit securely into the ceiling material at sections  
(A) and (B) as shown in Fig. 7-20.  
B
Fig. 7-19  
(5) Connect the wire (2-wire core) from the signal  
receiving unit with the wire from the indoor unit.  
(See section on how to wire the receiving unit.) as  
shown in Fig. 7-20.  
(6) Use the supplied spacers to adjust for a thickness  
several inches more than the ceiling material and  
lightly fasten the receiving unit in place with the  
small screws (M4 × 1-9/16 in., 2 pcs.) supplied  
with the unit.  
Fig. 7-20  
(7) Tighten the machine screws after fitting sections  
(A) and (B) into the openings, in the gap between  
the signal receiving unit and ceiling surface as in  
Fig. 7-21. Do not apply strong force when tighten-  
ing the screws. Excessive force might warp or  
damage the cover. When finished, the signal  
receiving unit should still be able to move slightly  
when pressed as shown in Fig. 7-21.  
Fig. 7-21  
(8) Reinstall the cover plate.  
75  
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07-115 SSHP_II 5/7/07 4:00 PM Page 76  
7-13. Electrical Wiring  
Be sure to do the wiring  
CAUTION  
correctly (incorrect  
wiring will damage the  
equipment).  
Recommended wire diameter and allowable length  
for signal receiving unit wiring and its branch wiring:  
AWG #18, MAX 1,300 ft.  
Terminal board  
WHT  
BLK  
1
2
1
2
Signal receiving  
unit  
for indoor unit  
remote controller  
wiring  
Wire from signal receiving unit  
Connection  
Signal receiving unit wiring (field supply)  
Signal receiving  
unit wiring  
Wire joint (2 pcs.  
white, supplied)  
1. Peel away 9/16 in. of shield from the wire  
for the connection.  
2. Join the 2 wires as shown and crimp-connect  
them with the wire joint (supplied).  
3. When no crimping tool is available or if a  
solder connection was made, then cover  
with insulating tape.  
Signal receiving  
unit wiring  
Wire joint CE-1  
(supplied)  
7-14. Test Run Switch  
(1) Remove the cover plate of the signal receiving unit.  
Set the "TEST RUN" switch of the dip switches to  
the ON position.  
ALL•  
RCU  
PCB CHK.  
:
SUB  
TEST RUN  
RCU MAIN  
NORMAL  
:
(2) Press the ON/OFF operation button on the  
wireless remote controller.  
1 2 3  
ADR  
RC  
(WL)  
ALL•  
4 5 6  
RCU : SUB  
PCB CHK.  
TEST RUN  
To avoid placing an  
excessive load on the  
equipment, use this  
function only when  
CAUTION  
conducting the test run.  
(3) Make a test run using the air conditioner in  
Fig. 7-22  
COOL or HEAT mode.  
(4) During the test run, the “OPER.,” “TIMER,”  
and “STDBY” LED all blink.  
To protect the air conditioner from overloading, the outdoor unit will not start running for approximately 3 minutes  
after power is applied or the air conditioner is turned off and then back on.  
When the DIP switch is set to “TEST – ON,” temperature control from the wireless remote controller is disabled.  
Do not use this setting at any time other than for the test run. Doing so will place an excessive load on the system.  
(5) After the test run, press the ON/OFF operation button on the wireless remote controller. Then, set the  
TEST RUN switch back to the OFF position to cancel the test run mode.  
(This receiver includes a 60-minute automatic OFF timer function in order to prevent continuous test run.)  
76  
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07-115 SSHP_II 5/7/07 4:00 PM Page 77  
7-15. Misoperation Alarm Indicators  
Service  
connector  
A blinking lamp for other than the signal receiving unit  
filter shows that a problem has occurred in the unit, so  
make an inspection. (Refer to servicing information in  
the service manual, etc.) Also, if wired remote control-  
ler and dedicated service check lines (854-9-9536-  
044-97: service use) are available, then detailed error  
information can be obtained by connecting to the  
service connector as shown in the drawing. For  
information on how to connect to the signal receiving  
unit, refer to the instruction manual that came with the  
dedicated service check lines.  
ALL•  
OPERATION lamp  
TIMER lamp  
STANDBY lamp  
FILTER lamp  
RCU : SUB  
PCB CHK.  
TEST RUN  
RCU : MAIN  
NORMAL  
Fig. 7-24  
Fig. 7-23  
Table 7-2  
Lamp  
Bright  
Cause of Trouble  
OPERATION  
TIMER  
lamp  
STANDBY  
lamp  
lamp  
No power supply or mis-wiring of signal receiving unit.  
S.C.* errors between the indoor unit’s controller (PCB) and  
signal receiving unit.  
S.C. errors between indoor and outdoor units.  
Alternately Indoor unit protector is activated.  
Alternately Outdoor unit protector is activated.  
Compressor protector is activated.  
Concurrent Mis-setting of indoor unit.  
Concurrent Mis-setting of outdoor unit.  
*
S.C.: Serial communications  
RC  
(WL)  
77  
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07-115 SSHP_II 5/7/07 4:00 PM Page 78  
7-16. Basic Wiring Diagram  
Be sure to do the wiring  
Use shielded wires for inter-unit control wiring and  
ground the shield on both sides. (Fig. 7-25)  
Otherwise misoperation because of electrical noise  
may occur.  
CAUTION  
correctly (incorrect wiring  
will damage the equipment).  
Remote  
controller  
Shielded wire  
1 2  
Ground  
Ground  
Wire joint  
1 2  
Fig. 7-25  
Indoor unit  
No. 1  
U1 U2  
Inter-unit  
control  
wiring  
U1 U2  
: Ground (earth)  
Outdoor unit  
Wiring procedure  
Carry out the wiring according to the above wiring  
diagram.  
Address setting is automatically executed  
after turning on the system.  
An indoor unit address is assigned to each  
indoor unit.  
RC  
(WL)  
Operation takes place successively at  
intervals of 1 second, by using combinations  
of the address setting of each unit.  
78  
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07-115 SSHP_II 5/7/07 4:00 PM Page 79  
7-17. Wiring System Diagram for Group Control  
This diagram shows when several units (maximum of  
8) are controlled by a signal receiving unit (main  
unit). In this case, a signal receiving unit can be  
connected at any indoor unit.  
Wiring procedure  
Wire according to the diagram at left:  
Address setting is executed automatically when the  
outdoor unit is turned on.  
Each successive unit will respond at one-second  
intervals following the order of the group address  
when the remote controller is operated.  
Group control using 2 signal receiving units  
It does not matter which of the 2 signal receiving units  
you set as the main controller.  
When using multiple signal receiving units (up to 2  
can be used), one is the main signal receiving  
unit and the other is the sub-signal receiving unit.  
Remote  
controller  
(main)  
(sub)  
To set up a sub-signal receiving unit, change its  
remote control address connector (RCU. ADR)  
located on its PCB from main to sub position  
(main: when shipped from factory).  
Connection wiring  
for group control  
1 2  
1 2  
Wire joint  
1 2  
1 2  
1 2  
1 2  
RC  
(WL)  
Indoor unit  
No. 8  
Indoor unit  
No. 1  
Indoor unit  
No. 2  
Indoor unit  
No. 3  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
U1U2  
Outdoor unit  
Outdoor unit Outdoor unit Outdoor unit  
: Ground (earth)  
79  
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07-115 SSHP_II 5/7/07 4:00 PM Page 80  
7-18. Wiring System Diagram for Multiple Remote Controllers  
When installing multiple remote controllers  
This multiple system is used for operating the unit(s) at  
different positions. (A maximum of 2 signal receiving  
units can be installed.)  
Setting method  
To execute this control, make the setting according  
to the following procedure.  
(1) Of the two installed signal receiving units, make  
one the main signal receiving unit (factory-  
shipped state).  
(2) On the other signal receiving unit, change the  
address connector on the PCB from main to sub  
position.  
In this state, it functions as a sub-signal receiving  
unit.  
Basic wiring diagram  
Carry out the wiring correctly  
CAUTION  
(incorrect wiring will damage  
the equipment).  
Signal receiving unit  
(main)  
(sub)  
(Option)  
1 2  
RC  
(WL)  
1 2  
To operate 1 indoor unit with 2 signal receiving units  
set at different locations.  
Connection wiring  
Remote control  
cable terminal  
board  
1 2  
Indoor unit  
Earth  
80  
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07-115 SSHP_II 5/7/07 4:00 PM Page 81  
<RCS-SH1UA>  
7-19. Test Run Procedure  
Wall-mounted Type  
(K Type)  
Check the “Check Items Before the Test Run.”  
(Item 7-20)  
Verify the combination (wiring) of indoor and  
outdoor units.  
Set the indoor unit controller to “TEST.”  
(Item 7-21-3)  
Check using the self-diagnostics  
function table. (Refer to 11-7)  
Correct any locations that require  
correction.  
NO  
Is operation  
possible?  
YES  
Note: Check the indoor-side drainage.  
Return the indoor unit controller to  
“NORM.” (Item 7-21-3)  
7-20. Check Items Before the Test Run  
(1) Turn ON the remote power switch at least 5 hours before the test run in order to charge the crank-case heater.  
(If the outdoor unit is an inverter unit, turn ON the power 12 hours in advance.)  
(2) Fully open the service valves on the gas-tube and liquid-tube sides.  
Set the sliding switches on the inside of the wireless remote controller cover to the correct settings for that model.  
After changing the settings, press the RESET button.  
(3)  
RC  
(WL)  
<For 3072R, 3672R>  
Wireless remote controller transmitter  
Verify that sliding switch 1 is in the “K” position.  
S K N  
S: Flap model (4-direction, ceiling suspended)  
K: Swing-only model (wall-mounted), settings completed  
N: No-flap model (built-in)  
RESET button  
<For 2672R>  
Verify that sliding switch 1 is in the “S” position.  
SENSOR button  
Sliding switch 2  
S K N  
Sliding switch 1  
Set sliding switch 2 to the correct setting for these models.  
A H C  
A H C  
A: Heat pump model  
(H: Heat pump, no auto heating/cooling)  
C: Cooling-only model  
81  
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07-115 SSHP_II 5/7/07 4:00 PM Page 82  
7-21. Preparing for the Test Run  
7-21-1. Changing the room temperature sensor  
Room temperature sensors are installed inside the indoor unit and the wireless remote controller.  
Either room temperature sensor can be used.  
When “Unit Sensor” is indicated on the wireless remote controller LCD, the indoor unit sensor is operating  
as the room temperature sensor.  
To change to the remote controller sensor, open the remote controller cover and press the SENSOR button  
once. The “Unit Sensor” display disappears, and the remote controller sensor becomes the room temperature  
sensor.  
If the temperature data from the remote controller is not communicated to the indoor  
unit for a period of 10 minutes when the remote controller sensor is selected, the unit  
automatically switches back to the indoor unit sensor.  
CAUTION  
Install the remote controller in a location where the signal can reliably be received by  
the indoor unit.  
7-21-2. Using the remote controller  
Face the remote controller toward the receiver (indoor unit).  
The maximum distance where the remote controller signal can be received is approximately 8 m, however this  
distance is only a guide. The actual distance may vary somewhat depending on battery capacity and other  
conditions.  
Make sure there are no obstructions which can block the signal between the remote controller and the receiver.  
When the remote controller signal is received correctly, the indoor unit beeps.  
(It beeps twice only when operation is started.)  
Receiver  
RC  
(WL)  
Do not drop, throw, or wash the remote controller.  
Do not place the remote controller in a location exposed to direct sunlight, or near a stove or similar appliance.  
7-21-3. Test run  
For 3072R, 3672R  
Controller  
For 2672R  
Controller  
ON  
Using the controller  
NORM.  
(1) Slide the main unit controller switch from “NORM.” to “TEST” (for  
3072R, 3672R), “ON” to “TEST” (for 2672R).  
OFF  
TEST  
OFF  
TEST  
(The outdoor unit will not operate for approximately 3 minutes after  
the power is turned ON, or after operation is stopped.)  
STDBY  
OPER. TIMER  
Indicator  
(2) All indicator lamps on the display blink while test run is in progress.  
(3) Temperature control is not possible during the test run.  
OPER. TIMER STDBY  
(4) If normal operation is not possible, the lamps on the display will indicate the problem.  
Refer to the self-diagnostics function table and correct the problem.  
(See 11-7. Table of Self-Diagnostics and corrections.)  
(5) After the test run is completed, move the controller switch from “TEST” to “NORM.” (for 3072R, 3672R), “TEST” to  
“ON” (for 2672R) and verify that the indicator lamps stop blinking.  
(A 60-minute automatic OFF timer function is included in order to prevent continuous test run.)  
CAUTION  
Do not use this setting at any time other than for the test run. Doing so will place an excessive load on  
the system.  
Test run is not possible if the power was turned ON when the controller switch was in the “TEST” position.  
Leave the power ON and move the switch to “NORM.” or “OFF,” then move the switch back to “TEST.”  
82  
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07-115 SSHP_II 5/7/07 4:00 PM Page 83  
7-22. Precautions  
Request that the customer be present at the time the test run is performed. Explain the Operation Manual to  
the customer, and then have the customer actually operate the system.  
Be sure to pass the manual and warranty certificate to the customer.  
Verify that the AC 208 / 230 V wiring is not connected to the terminal plate which is used to connect the inter-unit  
control wiring.  
* If AC 208 / 230 V is accidentally applied to this terminal plate, the fuse (0.5A for both indoor and outdoor units) on  
the inter-unit control PCB will be tripped in order to protect the PCB. Correct the wiring connections, then  
disconnect the 2P connectors (indoor unit: blue, OC, CN40; outdoor unit: blue, OC) which are connected  
to the PCB and connect the other 2P connectors (indoor unit: brown, EMG, CN44; outdoor unit: brown, EMG).  
(See the figure below.)  
If operation is still not possible with the brown connectors connected, cut the varistor (black) (for both the indoor  
and outdoor units).  
(Be sure to turn OFF the power before performing this work.)  
Indoor unit control PCB  
VA5 (Varistor, black)  
2P connector (brown)  
Outdoor unit control PCB  
<For 3072R, 3672R>  
EMG, CN44  
Fuse  
0.5A  
2P connector (blue)  
OC, CN40  
Serial 1 connector (blue)  
Serial 2 connector (brown)  
Varistor (black)  
Fuse  
0.5A  
Fuse  
0.5A  
<For 2672R>  
RC  
(WL)  
2P connector (blue)  
2P connector (brown)  
TEST  
SW103  
Varistor (black)  
OFF  
ON  
VA002  
CHK (2P plug)  
83  
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07-115 SSHP_II 5/7/07 4:00 PM Page 84  
7-23. When Setting Indoor Unit Control PCB Switch for Wall-Mounted Indoor Unit  
When using either the wired or wireless remote controller, refer to the tables below and accordingly slide the switch on  
the indoor unit control PCB.  
G
If this setting is not made correctly an alarm will occur. (The operation lamp on the display blinks.)  
G
This setting is not necessary if both the wired remote controller  
and wireless remote controller are used.  
However, when you use indoor unit KHS type, set the wired  
remote controller address connector on the PCB from main to  
sub position.  
Wired remote controller  
Remote controller  
address connector  
Main  
RCU check  
Sub  
G
The slide switch setting at the time of factory shipment for  
model KH type is “A”, and for model KHS type is “B.”  
RCU. ADR  
G
KH(S)3072 / 3672R, KHH(S)2672R  
When using  
wrired  
remote  
controller  
A
Nos. 1, 2 OFF, No. 3 ON  
When using  
wireless  
remote  
RC  
(WL)  
B
controller  
Nos. 1, 2, 3 all OFF  
G
KH(S)2672R  
When using  
wired  
remote  
A
controller  
Nos. 1, 2 OFF, No. 3 ON.  
When using  
wireless  
remote  
B
controller  
Nos. 1, 2, 3 all OFF  
84  
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07-115 SSHP_II 5/7/07 4:00 PM Page 85  
8. HOW TO INSTALL THE SYSTEM CONTROLLER  
(OPTIONAL PART)  
Do not supply power to the  
unit or try to operate it until  
the tubing and wiring to the  
outdoor unit are completed.  
8-1. System Controller Installation  
Switch box  
(with cover)  
Do not twist the control  
wiring with the power  
wiring or run it in the  
same metal conduit,  
because this may cause  
malfunction.  
M4 × 1-3/16 in.  
Screws (2)  
CAUTION  
Back case  
Install the system con-  
troller away from sources  
of electrical noise.  
Flat-top  
Screw  
System  
controller  
Install a noise filter or  
take other appropriate  
action if electrical noise  
affects the power supply  
circuit of the unit.  
Fig. 8-1  
(1) Remove the flat-top screw on the bottom of the  
back case. When you open up the decorative  
cover, you will see two gaps under the system  
controller. Insert a coin into these gaps and  
remove the back case. (Figs. 8-1, 8-2)  
Gap  
Gap  
Coin  
(2) Connect the wires to terminal base of the system  
controller (see next page).  
(3) Attach the back case with the 2 M4 screws  
Fig. 8-2  
provided.  
(4) To finish, fit the back tabs of the back case into  
the system controller and mount it using the flat-  
top screw.  
SC  
85  
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07-115 SSHP_II 5/7/07 4:00 PM Page 86  
8-2. Electrical Wiring  
How to connect electrical wiring  
Indoor unit PCB  
(1) Connect B1, B2 to indoor PCB CRV connector  
using accessary 2P connector. (*No polarity)  
Total wire length is less than 985 ft. and size is  
AWG#18.  
B1  
CRV  
(CN91: WHT)  
B2  
(2) Connect B5, B6 to indoor unit 2P terminal base.  
B3  
Accessary connector  
(*No polarity). Wire size is AWG#18.  
Wire joint connection  
B4  
Basic wiring  
U1  
U2  
B5  
B6  
B1:  
Power supply: DC12V *No polarity  
2P terminal base  
System controller  
To CRV connector (CN91) on indoor PCB  
B2:  
Indoor unit  
B3:  
B4:  
B5:  
B6:  
Not be used  
Fig. 8-3  
Auxiliary of inter-unit control wiring  
<Back side of system controller>  
Inter-unit control wiring. (Low voltage)  
To indoor unit 2P terminal base (U1, U2)  
*No polarity  
A1  
A2  
A3  
A4  
A5  
A6  
B6  
B5  
B4  
B3  
B2  
B1  
Terminals for remote monitoring  
A1:  
A2:  
A3:  
A4:  
A5:  
A6:  
Input for turning on air conditioners concurrently.  
Input for turning off air conditioners concurrently.  
Common input for turning air conditioners on or off.  
ON operation state indicator output.  
Alarm indicator output.  
Fig. 8-4  
Common indicator output.  
Basic wiring diagram of control wiring  
SC  
RC1  
RC2  
RC3  
A max. of 64 indoor units and 30 outdoor units  
can be connected in 1 system.  
Inter-unit  
control wiring  
Up to 10 system controllers can be connected  
1-1  
2-1  
3-1  
in 1 system.  
System controller  
86  
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07-115 SSHP_II 5/7/07 4:00 PM Page 87  
8-3. Address Switch Setting  
SW1  
SW1  
ON  
Main/sub selection switch  
OFF: System controller operates as main controller.  
1
2
3
4
5
6
7
8
ON: System controller operates as sub-controller.  
OFF  
ALL/ZONE mode selection switch  
ALL mode:  
All indoor units can be controlled by system controller  
ZONE 1, 2, 3, 4 mode:  
Indoor units in one of zone 1, 2, 3, or 4 can be controlled  
by system controller. All indoor units cannot be set.  
2
3
4
5
ALL mode  
ZONE 1 mode OFF OFF  
OFF OFF  
OFF  
ON  
ZONE 2 mode ON OFF OFF ON  
ZONE 3 mode OFF ON  
ZONE 4 mode ON ON  
ON  
ON  
Central control/Remote control mode selection switch.  
OFF: Central control mode.  
Individual setting by remote controller can be inhibited by  
system controller.  
ON: Remote control mode.  
Setting by system controller is inhibited by other central  
control equipment.  
Central control Main/Sub selection switch  
(OFF: Main, ON: Sub)  
1 When AMY adaptor etc. is used with system controller,  
set the switch to ON position.  
2
When only one system controller is used, set the switch to  
OFF position.  
Except , when multiple system controllers are used,  
3
1
set only one system controller to OFF position and others to  
ON position.  
ALL mode system controller should be in OFF position.  
(recommended)  
SC  
(Central control) button operation switch  
OFF:  
ON :  
(Central control) button operation is permitted.  
button operation is inhibited.  
*All switches are in OFF position at shipment.  
87  
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07-115 SSHP_II 5/7/07 4:00 PM Page 88  
SW2  
SW2  
ON  
1
2
3
4
5
6
7
8
Weekly timer input switches  
System controller operation can be set when weekly timer  
activates (ON/OFF).  
OFF  
Switch No.  
System controller operation  
1
2
3
Timer OFF→ON  
All ON  
Timer ON→OFF  
All OFF  
1
2
OFF OFF OFF  
ON OFF OFF  
No change  
All OFF  
Individual control All indoor units to  
1*1  
OFF ON OFF  
3
of all indoor units be  
to be permitted  
All OFF and all  
4
Same as above  
indoor units to be ON ON OFF  
1*1  
All indoor units to  
2*2  
OFF OFF ON  
Same as above  
5
6
be  
All OFF and all  
Same as above indoor units to be ON OFF ON  
2*2  
1
2
In case of Remote control mode, use or  
.
In case of ZONE 1, 2, 3, 4 mode, ALL, all indoor units means  
one of ZONE 1, 2, 3, 4.  
*1:  
1 (Central control 1) means ON/OFF operation cannot  
be executed by remote controller.  
2 (Central control 2) means ON/OFF, MODE change.  
Temp. setting cannot be executed by remote controller.  
*2:  
Auxiliary switch  
Must be set to OFF position.  
Beep tone switch  
OFF: Beep tone when each button is pushed.  
ON: No tone when each button is pushed.  
Indication switch  
Normally set to OFF position.  
When set to ON position, indication is not displayed on LCD  
of system controller.  
SC  
*All switches are in OFF position at shipment.  
88  
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07-115 SSHP_II 5/7/07 4:00 PM Page 89  
8-4. Mode Setting  
Central control  
Remote control  
According to the function of each system controller, set  
mode  
mode  
SW1 as shown in Fig. 8-5.  
2
3
4
5
6
2
3
4
5
6
(1) Central control/Remote control mode  
ON  
OFF  
ON  
OFF  
ALL  
central control  
ALL  
remote control  
Central control mode  
Inter-unit control wiring  
The system controller is used as the central control  
equipment.  
2
3
4
5
6
2
3
4
5
6
1
2
16  
ZONE1  
ON  
OFF  
ON  
OFF  
central control  
address 1-16  
Individual setting by remote controller can be  
inhibited by the system controller  
ZONE1  
central control  
ZONE1  
remote control  
Remote control mode  
2
3
4
5
6
2
3
4
5
6
17  
33  
49  
18  
34  
50  
32  
48  
64  
ZONE2  
central control  
address 17-32  
ON  
ON  
The system controller is used as the remote controller.  
Setting by system controller is inhibited by other  
central control equipment.  
OFF  
OFF  
ZONE2  
central control  
ZONE2  
remote control  
2
3
4
5
6
2
3
4
5
6
(2) ALL/ZONE mode  
ZONE3  
central control  
address 33-48  
ON  
OFF  
ON  
OFF  
ZONE3  
central control  
ZONE3  
remote control  
ALL mode  
All indoor units can be controlled by the system  
controller.  
2
3
4
5
6
2
3
4
5
6
ZONE4  
central control  
address 49-64  
ON  
OFF  
ON  
OFF  
ZONE mode  
ZONE4  
central control  
ZONE4  
remote control  
Indoor units in one of ZONE 1, 2, 3 or 4 can be  
controlled by the system controller  
(3) The function of the system controller consists of 10 types  
according to the combination of central control/remote  
control mode and ALL/ZONE mode setting as shown  
in the table 8-1.  
Fig. 8-5  
(4) Stick the system controller unit label in a con-  
Table 8-1  
spicuous position.  
Central control  
1. ALL/Central  
Remote control  
ALL  
6. ALL/Remote  
ZONE1 2. ZONE1/Central 7. ZONE1/Remote  
ZONE2 3. ZONE2/Central 8. ZONE2/Remote  
ZONE3 4. ZONE3/Central 9. ZONE3/Remote  
ZONE4 5. ZONE4/Central 10. ZONE4/Remote  
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8-5. How to Perform Zone Registration  
To operate the system controller properly, zone registration is required after finishing the test run (and after  
setting all indoor unit addresses) using one of the following methods.  
(a) Zone registration using the remote controller (RCS-SH80UG)  
Refer to page 91.  
(b) Zone registration using the system controller (SHA-KC64UG)  
Refer to page 92.  
(c) Automatic zone registration using the system controller (SHA-KC64UG)  
Refer to page 93.  
For methods (a) and (b), you should make a zone registration table manually before performing the  
registration as shown on the next page.  
For method (c), zone registration is executed automatically, proceeding from the smallest indoor unit address and  
smallest central addresses to larger numbers in numerical order. For example:  
Central address  
1
2
3
4
5
6
ZONE–group  
1-1  
1-2  
1-2  
1-3  
2-1  
1-4  
2-2  
1-5  
2-3  
1-6  
3-1  
Indoor unit address 1-1  
NOTE  
An indoor unit address is assigned to each indoor unit during automatic address  
operation. Each indoor unit address combines an R.C. address and indoor unit number  
as follows:  
1.  
1 – 1 : Indoor unit address (UNIT No.)  
Indoor unit No.  
Refrigerant circuit No. (R.C. address)  
This address is displayed on the remote controller for UNIT No. when the UNIT  
button is pressed.  
2.  
The central address represents the zone and group number. These addresses are  
assigned in ascending numerical order.  
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07-115 SSHP_II 5/7/07 4:00 PM Page 91  
(a) Zone registration using the remote controller  
(RCS-SH80UG)  
(Determination of central address)  
In this case, after confirming which indoor unit is  
connected to the remote controller and that the air  
conditioner in the OFF state, you set the central  
addresses one at a time.  
If the system has no remote controller, connect a  
remote controller to the system temporarily. Then  
follow this procedure.  
NOTE  
The indoor unit address must already have been set  
before performing zone registration. If necessary, refer  
to the Installation Manual supplied with the outdoor  
unit.  
(1) Press the  
and  
buttons on the remote  
controller at the same time for more than  
4 seconds.  
(2) Do not press  
buttton.  
(3) Once in this mode, the UNIT No., CODE No., No.  
of SET DATA and  
indications will flash on  
the display as shown Fig. 8-6.  
NOTE  
In case of group control “ALL” instead of “UNIT No.”  
will flash on the display. Select the main indoor unit  
address by pressing the  
button once.  
Fig. 8-6  
(4) Set CODE No. to 03 using the  
) buttons.  
and  
(
NOTE  
SC  
CODE No. 03 must be selected to perform zone  
registration using the remote controller.  
(5) Set the Central address you want to assign  
to the indoor unit address using the  
and  
(
) buttons according to the zone  
registration table.  
(6) Press the button. The CODE No. and Central  
address changes from flashing to ON state. If you  
make a mistake, press the  
button and  
reset the central address.  
(7) Press the  
button to finish zone registration.  
For example, in this case  
Indoor unit address: 1–8  
Central address : 17 (Zone 2, Group 1)  
Fig. 8-7  
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07-115 SSHP_II 5/7/07 4:00 PM Page 92  
(b) Zone registration using the system controller  
(SHA-KC64UG)  
In this case, you set all central addresses by  
the system controller at once manually.  
If no data is  
registered  
no number is  
displayed.  
ZONE  
1
9
2
3
4
6
ZONE  
(1) Press the  
and  
ZONE  
buttons at the same  
Selected group  
No. if no data is  
registered.  
time for more than 4 seconds.  
and CODE No. C1 will flash.  
If data is  
(2) After confirming that CODE No. C1 is displayed,  
registered  
the unit No.  
is displayed.  
press the  
button. Once in this mode, a  
GROUP  
SELECT  
ZONE  
change takes place as shown in Fig. 8-8.  
(3) Select the zone and group No. you want to  
set with  
ZONE  
and  
(GROUP)  
buttons.  
If already set, press the  
buttons.  
Fig. 8-8  
(4) Set the unit No. (indoor unit address) with  
and buttons, according to the zone registra-  
tion table.  
R.C. No. ...................  
Indoor unit No...........  
ZONE  
1
9
2
3
4
6
7
ZONE  
button  
button  
(5) Press the button.  
GROUP No. turns ON and UNIT No. (indoor unit  
address) changes from flashing to ON state.  
UNIT No. is registered to the selected ZONE No.  
and GROUP No.  
GROUP  
SELECT  
ZONE  
If you make a mistake, press the  
button  
and reselect the ZONE, GROUP and UNIT No.  
For example, in this case  
(6) Register the other UNIT Nos. in the same way by  
Zone 3, Group No. 7  
Unit No. (indoor unit address) 2-8  
following steps (3) to (5).  
(7) Finally, complete the registration by pressing the  
button.  
Unit No. 2-8 is registered to Zone 3, Group 7.  
Fig. 8-9  
flashes for a few minutes, then turns OFF.  
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(c) Automatic zone registration using the system  
controller (SHA-KC64UG)  
(1) Press the and  
buttons at the same  
time for more than 4 seconds.  
and CODE No. C1 will flash.  
(2) Select CODE No. C2 by pressing  
and  
button.  
( ) button and press the  
C2 changes from flashing to ON state and  
automatic zone registration will start.  
(3) Any registered GROUP Nos. will be erased.  
(4) Central address will be assigned from the smallest  
indoor unit address to larger ones in numerical  
order automatically.  
On finishing automatic zone registration,  
changes from flashing to OFF.  
Fig. 8-10  
(5) If an error occurs, “CHECK” starts  
flashing and zone registration finishes at this  
time. Press the  
(6) Finally, complete automatic zone registration  
mode by pressing the button.  
flashes for a few minutes, then turns OFF.  
button to start over.  
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07-115 SSHP_II 5/7/07 4:00 PM Page 94  
How to check for overlapping of central address Nos.  
(1) Press the and buttons at the same  
time for more than 4 seconds.  
and CODE No. C1 will flash.  
(2) Select CODE No. C3 by pressing  
,
( ) button and press the  
button.  
C3 changes from flashing to ON state and  
will flash. Then auto overlap checking will start.  
(3) If C3 changes from ON to flashing and  
stops flashing and disappears, there is no over-  
lapping.  
Then finally, complete the auto overlap checking  
mode by pressing the  
button.  
Fig. 8-11  
(4) If some of GROUP No., ZONE No. and UNIT No.  
flash, you should try the zone registration again.  
1
Select CODE No. C1 by pressing  
,
( ) button and press the  
button.  
2
Select the flashing GROUP No. with the ZONE  
and GROUP buttons.  
Then press the  
button and reselect the  
ZONE, GROUP and UNIT No.  
3
Then finally, complete the auto overlap  
checking mode by pressing the  
button.  
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07-115 SSHP_II 5/7/07 4:00 PM Page 95  
ZONE registration table  
Indoor unit  
Indoor unit  
Central  
address  
Central  
address  
address  
address  
ZONE GROUP  
Unit location  
ZONE GROUP  
Unit location  
(UNIT No.)  
(UNIT No.)  
1
2
3
4
5
6
7
1
1
2
3
4
5
6
7
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
2
3
4
5
6
7
8
8
8
1
3
9
10  
11  
12  
13  
14  
15  
16  
1
9
9
10  
11  
12  
13  
14  
15  
16  
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
2
2
3
3
4
4
5
5
6
6
7
7
8
8
2
4
SC  
9
9
10  
11  
12  
13  
14  
15  
16  
10  
11  
12  
13  
14  
15  
16  
NOTE  
Assign indoor unit addresses to the desired positions (central addresses)  
1.  
manually.  
2. For group control, only the main indoor unit should be assigned.  
Sub indoor units cannot be assigned.  
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07-115 SSHP_II 5/7/07 4:00 PM Page 96  
8-6. Connection with Other Equipment  
System controller  
Equipment  
Input/output  
Terminal  
Terminal  
Example  
Input/output  
Wire length:  
less than 330 ft.  
CPEV  
AWG#16  
ON/OFF output  
Alarm output  
ON/OFF  
Potential tree  
A contact, static  
(relay output)  
Alarm  
Contact capacity  
DC 30V, 0.5A  
Output common  
Pulse width:  
more than  
984 ft./sec.  
Wire length:  
less than 330 ft.  
All ON input  
All OFF input  
Pulse (photo  
coupler input)  
ALL ON (+)  
+24  
CPEV  
AWG#16  
CX  
ALL OFF (+)  
TX  
Contact capacity  
DC 24V, 10mA  
Input common  
COM  
8-7. Memory Backup Switch  
Check the backup switch is ON on the for back side of  
the PCB of the system controller.  
8-8. Test Run  
Back up switch  
(1) Power on all indoor units. Next, power on the  
system controller.  
will flash, checking the indoor unit addresses  
automatically.  
Back up battery  
(2) If group No. displayed on system controller is not the  
same as the indoor unit No.* which is connected, see  
Fig. 9-5 and carry out setting again.  
*In case of group control, main unit No. only.  
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9. HOW TO PROCESS TUBING  
Deburring  
The liquid tubing side is connected by a flare nut, and  
the gas tubing side is connected by brazing.  
After  
Before  
9-1. Connecting the Refrigerant Tubing  
Use of the Flaring Method  
Many conventional split system air conditioners employ  
the flaring method to connect refrigerant tubes which run  
between indoor and outdoor units. In this method, the  
copper tubes are flared at each end and connected with  
flare nuts.  
Fig. 9-1  
Flaring Procedure with a Flare Tool  
(1) Cut the copper tube to the required length with a  
tube cutter. It is recommended to cut  
approx. 12 – 20 in. longer than the tubing length  
you estimate.  
Copper  
tubing  
Reamer  
(2) Remove burrs at each end of the copper tubing  
with a tube reamer or file. This process is impor-  
tant and should be done carefully to make a good  
flare. Be sure to keep any contaminants (moisture,  
dirt, metal filings, etc.) from entering the tubing.  
(Figs. 9-1 and 9-2)  
Fig. 9-2  
NOTE  
Flare nut  
When reaming, hold the tube end downward and be  
sure that no copper scraps fall into the tube. (Fig. 9-2)  
Copper  
tubing  
(3) Remove the flare nut from the unit and be sure to  
mount it on the copper tube.  
Flare tool  
(4) Make a flare at the end of the copper tube with a  
flare tool.* (Fig. 9-3)  
Fig. 9-3  
*Use “RIGID®” or equivalent.  
NOTE  
Flare size: A (inch)  
Copper tubing  
(Outer dia.)  
A good flare should have the following characteristics:  
G inside surface is glossy and smooth  
G edge is smooth  
0
A
– 0.4  
23/64  
33/64  
21/32  
ø1/4  
ø3/8  
ø1/2  
ø5/8  
G tapered sides are of uniform length  
25/32  
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Caution Before Connecting Tubes Tightly  
(1) Apply a sealing cap or water-proof tape to prevent dust or water from  
entering the tubes before they are used.  
Apply refrigerant  
(2) Be sure to apply refrigerant lubricant to the matching surfaces of the  
flare and union before connecting them together. This is effective for  
reducing gas leaks. (Fig. 9-4)  
lubricant here and here  
Fig. 9-4  
(3) For proper connection, align the union tube and flare tube straight with  
each other, then screw on the flare nut lightly at first to obtain a smooth  
match. (Fig. 9-5)  
G Adjust the shape of the liquid tube using a tube bender at the installa-  
tion site and connect it to the liquid tubing side valve using a flare.  
Flare nut  
Union  
Cautions During Brazing  
Fig. 9-5  
G Replace air inside the tube with nitrogen gas to prevent copper  
oxide film from forming during the brazing process. (Oxygen,  
carbon dioxide and Freon are not acceptable.)  
Torque wrench  
G Do not allow the tubing to get too hot during brazing. The nitrogen  
gas inside the tubing may overheat, causing refrigerant system  
valves to become damaged. Therefore allow the tubing to cool  
when brazing.  
Spanner  
Indoor unit  
Outdoor unit  
G Use a reducing valve for the nitrogen cylinder.  
Fig. 9-6  
G Do not use agents intended to prevent the formation of oxide film.  
These agents adversely affect the refrigerant and refrigerant oil,  
and may cause damage or malfunctions.  
9-2. Connecting Tubing between Indoor and Outdoor Units  
(1) Tightly connect the indoor-side refrigerant tubing extended from the wall  
with the outdoor-side tubing.  
(2) To fasten the flare nuts, apply specified torque as at right.  
A
Fig. 9-7  
G When removing the flare nuts from the tubing  
connections, or when tightening them after  
connecting the tubing, be sure to use 2 monkey  
Tightening torque  
(approximate)  
Tube thickness  
Tube diameter  
wrenches or spanners as shown. (Fig. 9-6)  
ø1/4" (6.35 mm)  
14 – 18 N  
m
·
1/32 in.  
(140 – 180 kgf cm)  
If the flare nuts are over-tightened, the flare may  
·
be damaged, which could result in refrigerant  
leakage and cause injury or asphyxiation to  
34 – 42 N  
m
·
1/32 in.  
ø3/8" (9.52 mm)  
(340 – 420 kgf cm)  
·
49 – 61 N  
m
·
room occupants.  
ø1/2" (12.7 mm)  
1/32 in.  
1/32 in.  
(490 – 610 kgf cm)  
·
G When removing or tightening the gas tube flare  
68 – 82 N  
m
·
ø5/8" (15.88 mm)  
nut, use 2 monkey wrenches together: one at  
(680 – 820 kgf cm)  
·
the gas tube flare nut, and one at part A.  
Because the pressure is approximately 1.6 times higher  
than conventional refrigerant pressure, the use of ordinary  
flare nuts (type 1) or thin-walled tubes may result in tube  
rupture, injury, or asphyxiation caused by refrigerant  
leakage.  
(Fig. 9-7)  
G For the flare nuts at tubing connections, be  
sure to use the flare nuts that were supplied  
with the unit, or else flare nuts for R410A  
(type 2). The refrigerant tubing that is used  
must be of the correct wall thickness as shown  
in the table at right.  
G In order to prevent damage to the flare caused by  
over-tightening of the flare nuts, use the table above  
as a guide when tightening.  
G When tightening the flare nut on the liquid tube, use a  
monkey wrench with a nominal handle length of 7-7/8 in.  
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07-115 SSHP_II 5/7/07 4:00 PM Page 99  
Packed valve  
G Do not use a spanner to tighten the valve stem caps.  
Charging port  
Doing so may damage the valves.  
G Depending on the installation conditions, applying  
Valve stem  
excessive torque may cause the nuts to crack.  
Precautions for Packed Valve Operation  
G If the packed valve is left for a long time with the valve  
stem cap removed, refrigerant will leak from the valve.  
Therefore, do not leave the valve stem cap removed.  
Main valve  
G Use a torque wrench to securely tighten the valve stem  
Valve stem cap  
cap.  
Fig. 9-8  
G Valve stem cap tightening torque:  
2 tubes arranged together  
Charging port  
8 – 10 N • m (80 – 100 kgf • cm)  
19 – 21 N • m (190 – 210 kgf • cm)  
28 – 32 N • m (280 – 320 kgf • cm)  
Inter-unit  
Gas tube  
ø3/8" (Liquid side)  
ø5/8" (Gas side)  
Liquid tube  
control wiring  
9-3. Insulating the Refrigerant Tubing  
Tubing Insulation  
Armoring tape  
G Thermal insulation must be applied to all unit tubing,  
including the distribution joint (purchased separately).  
* For gas tubing, the insulation material must be heat  
resistant to 248°F or above. For other tubing, it must be  
heat resistant to 176°F or above.  
Insulation  
Fig. 9-9  
Sealer (supplied)  
Insulation tape (white)  
(supplied)  
Insulation material thickness must be 13/32 in. or greater.  
If the conditions inside the ceiling exceed DB 86°F and  
RH 70%, increase the thickness of the gas tubing  
insulation material by 1 step.  
Flare insulator (supplied)  
Tube insulator  
(not supplied)  
Heat resistant  
248ºF or above  
Unit side  
insulator  
If the exterior of the outdoor unit  
Flare nut  
Vinyl clamps (supplied)  
CAUTION  
valves has been finished with a  
square duct covering, make sure  
you allow sufficient space to  
access the valves and to allow  
the panels to be attached and  
removed.  
Fig. 9-10  
Refrigerant tubing and insulator  
(not supplied)  
Drain insulator  
and clamp.  
Large  
Drain pipe and insulator  
(not supplied)  
Taping the flare nuts  
(supplied)  
Wind the white insulation tape around the flare nuts at the  
gas tube connections. Then cover up the tubing  
connections with the flare insulator, and fill the gap at the  
union with the supplied black insulation tape. Finally, fasten  
the insulator at both ends with the supplied vinyl clamps.  
(Fig. 9-10)  
Packing  
clamp.  
Insulation  
tape  
Small  
hose band  
(supplied)  
Vinyl  
Flare  
clamp  
insulator  
Seal  
Insulation material  
The procedure used for  
installing the insulator for  
both gas and liquid  
The material used for insulation must have good insulation  
characteristics, be easy to use, be age resistant, and must  
not easily absorb moisture.  
tubes is the same.  
After a tube has been insulated,  
Fig. 9-11  
never try to bend it into a nar-  
row curve because it can cause  
the tube to break or crack.  
CAUTION  
Never grasp the drain or refrigerant connecting  
outlets when moving the unit.  
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07-115 SSHP_II 5/7/07 4:00 PM Page 100  
9-4. Taping the Tubes  
(1) At this time, the refrigerant tubes (and electrical  
wiring if local codes permit) should be taped  
together with armoring tape in 1 bundle. To  
prevent condensation from overflowing the drain  
pan, keep the drain hose separate from the  
refrigerant tubing.  
Inter-unit  
Gas tube  
Liquid tube  
control wiring  
Armoring tape  
(2) Wrap the armoring tape from the bottom of the  
outdoor unit to the top of the tubing where it  
enters the wall. As you wrap the tubing, overlap  
half of each previous tape turn.  
Insulation  
(3) Clamp the tubing bundle to the wall, using 1  
clamp approx. each meter. (Fig. 9-12)  
NOTE  
Fig. 9-12  
Do not wind the armoring tape too tightly since this  
will decrease the heat insulation effect. Also ensure  
that the condensation drain hose splits away from the  
bundle and drips clear of the unit and the tubing.  
Apply putty here  
9-5. Finishing the Installation  
After finishing insulating and taping over the tubing,  
use sealing putty to seal off the hole in the wall to  
prevent rain and draft from entering. (Fig. 9-13)  
Tubing  
Fig. 9-13  
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07-115 SSHP_II 5/7/07 4:00 PM Page 101  
10. LEAK TEST, EVACUATION AND  
Manifold gauge  
ADDITIONAL REFRIGERANT CHARGE  
G Perform an air-tightness test for this package A/C. Check  
that there is no leakage from any of the connections.  
Air and moisture in the refrigerant system may have  
undesirable effects as indicated below.  
G pressure in the system rises  
G operating current rises  
G cooling (or heating) efficiency drops  
G moisture in the refrigerant circuit may freeze and block  
capillary tubing  
Fig. 10-1  
Vacuum pump  
Outlet  
Inlet  
G water may lead to corrosion of parts in the refrigerant  
system  
Therefore, the indoor unit and tubing between the indoor  
and outdoor unit must be leak tested and evacuated to  
remove any noncondensables and moisture from the  
system.  
Fig. 10-2  
I Air Purging with a Vacuum Pump (for Test Run)  
Manifold valve  
Preparation  
C
Check that each tube (both liquid and gas tubes) between  
the indoor and outdoor units has been properly connected  
and all wiring for the test run has been completed. Remove  
the valve caps from both the gas and liquid service valves  
on the outdoor unit. Note that both liquid and gas tube  
service valves on the outdoor unit are kept closed at this  
stage.  
Pressure  
gauge  
Lo  
Hi  
Charge hose  
Cylinder  
valve  
G The refrigerant charge at the time of shipment is only  
guaranteed sufficient for a tubing length of up to 100 ft.  
The tubing may exceed this length, up to the maximum  
permitted length; however, an additional charge is  
necessary for the amount that the tubing exceeds 100 ft.  
(No additional refrigerating machine oil is needed.)  
Nitrogen gas cylinder  
(In vertical standing  
position)  
10-1. Leak Test  
(1) With the service valves on the outdoor unit closed,  
remove the 1/4 in. flare nut and its bonnet on the gas  
tube service valve. (Save for reuse.)  
Open  
Gas  
tube  
Close  
Close  
(2) Attach a manifold valve (with pressure gauges) and dry  
nitrogen gas cylinder to this service port with charge  
hoses.  
Outdoor unit  
Liquid  
tube  
Use a manifold valve for air  
purging. If it is not available,  
CAUTION  
use a stop valve for this  
purpose. The “Hi” knob of the  
manifold valve must always be  
kept closed.  
Fig. 10-3  
101  
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07-115 SSHP_II 5/7/07 4:00 PM Page 102  
(3) Pressurize the system up to 4.15 MPa  
(42 kgf/cm2G) with dry nitrogen gas and close the  
cylinder valve when the gauge reading reaches  
4.15 MPa (42 kgf/cm2G). Then, test for leaks with  
liquid soap.  
Manifold valve  
Pressure  
gauge  
Lo  
Hi  
To avoid nitrogen entering the  
refrigerant system in a liquid  
CAUTION  
state, the top of the cylinder  
must be higher than the bottom  
when you pressurize the  
system. Usually, the cylinder is  
used in a vertical standing  
position.  
Vacuum pump  
(4) Do a leak test of all joints of the tubing (both  
indoor and outdoor) and both gas and liquid  
service valves. Bubbles indicate a leak. Wipe  
off the soap with a clean cloth after the leak test.  
Open  
Gas  
tube  
(5) After the system is found to be free of leaks,  
Close  
Close  
relieve the nitrogen pressure by loosening the  
C
charge hose connector at the nitrogen cylinder.  
When the system pressure is reduced to normal,  
disconnect the hose from the cylinder.  
Outdoor unit  
Liquid  
tube  
10-2. Evacuation  
Be sure to use a vacuum pump that includes a  
function for prevention of back-flow, in order to  
prevent back-flow of pump oil into the unit tubing  
when the pump is stopped.  
G Perform vacuuming of the indoor unit and tubing.  
Connect the vacuum pump to the gas tube valve  
and apply vacuum at a pressure of –755 mmHg  
(5 Torr) or below.  
Fig. 10-4  
Continue vacuum application for a minimum of 1  
hour after the pressure reaches –755 mmHg.)  
(1) Attach the charge hose end described in the  
preceding steps to the vacuum pump to evacuate  
the tubing and indoor unit. Confirm that the “Lo”  
knob of the manifold valve is open. Then, run the  
vacuum pump.  
(2) When the desired vacuum is reached, close the  
“Lo” knob of the manifold valve and turn off the  
vacuum pump. Confirm that the gauge pressure is  
under 667 Pa (–755 mmHg, 5 Torr) after 4 to 5  
minutes of vacuum pump operation.  
Use a cylinder specifically  
designed for use with R410A.  
CAUTION  
102  
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07-115 SSHP_II 5/7/07 4:00 PM Page 103  
Manifold valve  
10-3. Charging Additional Refrigerant  
G Charging additional refrigerant (calculated from the  
liquid tube length as shown on page 14, Amount of  
additional refrigerant charge) using the liquid tube  
service valve. (Fig. 10-5)  
Pressure  
gauge  
Lo  
Hi  
Valve  
G Use a balance to measure the refrigerant accurately.  
G If the additional refrigerant charge amount cannot  
be charged at once, charge the remaining  
refrigerant in liquid form by using the gas tube  
service valve with the system in Cooling mode at  
the time of test run. (Fig. 10-6)  
Liquid  
* If an additional refrigerant charge has been  
performed, list the refrigerant tubing length and  
amount of additional refrigerant charge on the  
product label (inside the panel).  
R410A  
Close  
10-4. Finishing the Job  
Gas  
tube  
(1) With a hex wrench, turn the liquid tube service  
valve stem counter-clockwise to fully open the  
valve.  
Close  
Close  
C
(2) Turn the gas tube service valve stem counter-  
clockwise to fully open the valve.  
Outdoor unit  
Liquid  
tube  
To avoid gas from leaking  
CAUTION  
when removing the charge  
hose, make sure the stem  
of the gas tube is turned all  
the way out (“BACK SEAT”  
position.  
(3) Loosen the charge hose connected to the gas  
tube service port (5/16 in.) slightly to release the  
pressure, then remove the hose.  
Fig. 10-5  
(4) Replace the 5/16 in. flare nut and its bonnet on the  
gas tube service port and fasten the flare nut  
securely with an adjustable wrench or box wrench.  
This process is very important to prevent gas from  
leaking from the system.  
Open  
Gas  
tube  
(5) Replace the valve caps at both gas and liquid  
service valves and fasten them securely.  
Open  
Open  
Outdoor unit  
Liquid  
tube  
Fig. 10-6  
103  
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07-115 SSHP_II 5/7/07 4:00 PM Page 104  
11. TEST RUN  
11-1. Preparing for Test Run  
G Before attempting to start the air conditioner,  
ON  
check the following:  
(Power must be turned ON  
at least 5 hours before  
attempting test run)  
(1) All loose matter is removed from the cabinet  
especially steel filings, bits of wire, and clips.  
(2) The control wiring is correctly connected and all  
electrical connections are tight.  
Power mains switch  
(3) The protective spacers for the compressor used for  
transportation have been removed. If not, remove  
them now.  
Fig. 11-1  
(4) The transportation pads for the indoor fan have  
been removed. If not, remove them now.  
(5) The power has been supplied to the unit for at least  
5 hours before starting the compressor. The bottom  
of the compressor should be warm to the touch and  
the crankcase heater around the feet of the  
compressor should be hot to the touch. (Fig. 11-1)  
(6) Both the gas and liquid tube service valves are  
open. If not, open them now. (Fig. 11-2)  
Gas tube  
Liquid tube  
(7) Request that the customer be present for the trial  
run.  
Fig. 11-2  
Explain the contents of the instruction manual, then  
have the customer actually operate the system.  
(8) Be sure to give the instruction manual and warranty  
certificate to the customer.  
(9) When replacing the control PCB, be sure to make  
all the same settings on the new PCB as were in  
use before replacement.  
The existing EEPROM is not changed, and is  
connected to the new control PCB.  
104  
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07-115 SSHP_II 5/7/07 4:00 PM Page 105  
I X, T, U, K Type  
11-2. Caution  
G This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor  
unit.  
G The indoor and outdoor unit control PCBs utilize a semiconductor memory element (EEPROM). The set-  
tings required for operation were made at the time of shipment.  
Only the correct combination of indoor and outdoor units can be used.  
G This test run manual describes primarily the procedure when using the wired remote controller.  
11-3. Test Run Procedure  
Recheck the items (see 11-4) to check before the test run.  
Check the combination (wiring) of indoor and  
outdoor units.  
(See 5-3)  
Turn ON the indoor and outdoor power.  
NO  
Automatic  
address?  
Check the warning code.  
YES  
(See 10-5)  
Set the remote controller to “test run.”  
Has the  
test run been  
completed?  
Refer to “Table of Self-Diagnostic  
Functions and Corrections” to  
check the system.  
NO  
Note: Check the indoor-side drainage.  
YES  
Return the remote controller to normal  
control.  
Fig. 11-3  
105  
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07-115 SSHP_II 5/7/07 4:00 PM Page 106  
11-4. Items to Check Before the Test Run  
(1) Turn the breaker ON at least 12 hours in advance in order to energize the crank case heater.  
(2) Fully open the closed valves on the liquid tube and gas tube sides.  
11-5. Test Run Using the Remote Controller  
(1) Press and hold the remote controller  
button for 4 seconds or longer. Then press the  
button.  
G “TEST” appears in the LCD display during the test run.  
G Temperature control is not possible when test run mode is engaged.  
(This mode places a large load on the devices. Use it only when performing the test run.)  
(2) Use either Heating or Cooling mode to perform the test run.  
Note: The outdoor unit will not operate for approximately 3 minutes after the power is turned ON or after it stops  
operating.  
(3) If normal operation is not possible, a code appears on the remote controller LCD display.  
Refer to the “Table of Self-Diagnostic Functions and Corrections” on the next page, and correct the problem.  
(4) After the test run is completed, press the  
display.  
button again. Check that “TEST” disappears from the LCD  
(This remote controller includes a function that cancels test run mode after 60 minutes have elapsed, in order to  
prevent continuous test run operation.)  
(5) For the test run of an inverter outdoor unit, operate the compressors for a minimum of 10 minutes.  
* When performing a test run using a wired remote controller, operation is possible without attaching the  
cassette-type ceiling panel.  
(“P09” will not be displayed.)  
11-6. Precautions  
G Request that the customer be present when the test run is performed. At this time, explain the operation manual  
and have the customer perform the actual steps.  
G Be sure to pass the manuals and warranty certificate to the customer.  
G Check that the AC 230 / 208 V power is not connected to the inter-unit control wiring connector terminal.  
* If AC 230 / 208 V is accidentally applied, the indoor or outdoor unit control PCB fuse (0.5A for both indoor and  
outdoor units) will blow in order to protect the PCB. Correct the wiring connections, then disconnect the 2P  
connectors (indoor: blue, OC) (outdoor: blue, OC) that are connected to the PCB, and replace them with 2P  
connectors (indoor: brown, EMG) (outdoor: brown, EMG). (Refer to the figure below.) If operation is still not  
possible after changing the brown connectors, try cutting the varistor (VA002) (both indoor and outdoor).  
(Be sure to turn the power OFF before performing this work.)  
Indoor unit control PCB  
Outdoor unit control PCB  
Varistor (black)  
VA002  
VA002 (Varistor)  
CN44 EMG  
Terminal plug (black)  
CN40 OC  
Fuse (F3.05A)  
EMG (brown) connector  
OC (blue)  
connector  
Fuse  
0.5A  
IC8  
Fig. 11-4  
106  
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107  
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11-8. Examples of Wiring Diagrams  
11-8-1. Basic wiring diagram 1  
Single-type system  
G Be careful to avoid miswiring when connecting the wires. (Miswiring will damage the units.)  
System address rotary switch  
(Set to “0” at the time of shipment.)  
Outdoor unit  
L1 L2  
1
2
G U1 U2  
Ground  
Power supply  
Single-phase  
230 / 208 V  
1
2
Indoor  
unit  
U1  
U2  
RC  
Remote controller wiring  
(Field supply)  
BLK  
WHT  
1 2  
(Optional)  
Wired remote  
controller  
Fig. 11-5  
108  
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07-115 SSHP_II 5/7/07 4:00 PM Page 109  
11-8-2. Basic wiring diagram 2  
Group control (when a central control device is not used)  
G Simultaneous-operation multi system  
A maximum of 8 indoor units can be connected to 1 remote controller.  
Set the system address (refrigerant tubing system address) before turning on the remote power switch.  
(Refer to 11-8-3. Setting the system addresses.)  
(Set using the system address rotary switch on the outdoor unit control PCB.)  
System address rotary switch  
(Set to “0” at the time of shipment.)  
System address rotary switch  
(Set to “0” at the time of shipment.)  
Outdoor unit  
L1 L2  
Outdoor unit  
L1 L2  
1
2
G U1 U2  
1
2
G U1 U2  
Ground  
Ground  
Power supply  
Single-phase  
230 / 208 V  
Power supply  
Single-phase  
230 / 208 V  
1
2
1
2
Indoor  
Indoor  
unit  
unit  
U1  
U2  
U1  
U2  
RC  
RC  
Remote controller crossover wiring  
for group control  
Remote controller wiring  
(Field supply)  
BLK  
WHT  
1 2  
(Optional)  
Wired remote  
controller  
Fig. 11-6a  
(Wiring procedure)  
(1) Connect the remote controller to the indoor unit remote controller  
wiring.  
Indoor  
Indoor  
Indoor  
Use the remote controller connection wire coming from the  
indoor unit, and field-supply wire and a wire joint to complete  
the connection as shown in Fig. 11-6b. The remote controller  
connection wire coming from the indoor unit includes a  
connector, therefore cut off the connector and use the wire  
joint to connect the wire from the remote controller.  
unit 1  
unit 2  
unit 3  
RC  
RC  
RC  
(2) Connect the indoor units (U1, U2) and the outdoor units (1, 2).  
Connect the other outdoor units and indoor units (with different  
refrigerant systems) in the same way.  
BLK  
WHT  
1 2  
(Optional)  
Connect the inter-unit control wiring to the indoor units (U1, U2)  
for each refrigerant system.  
(Inter-unit control wiring)  
Wired remote  
controller  
Fig. 11-6b  
109  
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07-115 SSHP_II 5/7/07 4:00 PM Page 110  
11-8-3. Setting the outdoor unit system addresses  
For basic wiring diagram 2 (Set the system addresses: 1, 2, 3...)  
Outdoor unit control PCB  
System address rotary switch  
(Set to “0” at time of shipment)  
System address rotary switch  
System address 10s digit and 20s digit  
DIP switch  
System address rotary switch  
Automatic address  
button (black)  
System address  
10s 20s  
DIP switch  
ON  
ON  
Terminal plug (black)  
1
2
OFF  
Fig. 11-7  
System address 10s digit  
System address 1s place  
System address No.  
(2P DIP switch)  
(Rotary switch)  
ON  
ON  
0
Automatic address  
0
“0” setting  
Both OFF  
Both OFF  
(Setting at shipment = “0”)  
1
2
2
2
2
2
2
OFF  
ON  
ON  
“1” setting  
1
2
(If outdoor unit is No. 1)  
1
OFF  
ON  
ON  
(If outdoor unit is No. 2)  
“2” setting  
Both OFF  
1
OFF  
ON  
ON  
11 (If outdoor unit is No. 11)  
21 (If outdoor unit is No. 21)  
30 (If outdoor unit is No. 30)  
10s digit ON  
“1” setting  
1
OFF  
ON  
ON  
“1” setting  
20s digit ON  
1
OFF  
ON  
ON  
0
10s digit and 20s digit ON  
“0” setting  
1
OFF  
11-8-4. Automatic address setting using the remote controller  
When the outdoor unit shown in 11-8-2. Basic wiring diagram 2 is used for group control of multiple outdoor units , use  
the remote controller to perform automatic address setting. (During automatic address setting, “SETTING” blinks on  
the remote controller display.)  
G Press the remote controller timer time  
button and  
button simultaneously. (Hold for 4 seconds or longer.)  
Then press the button. (Item code “AA” appears: All systems automatic address setting.)  
(Automatic address setting is performed in sequence for all outdoor units from No. 1 to No. 30. When automatic  
address setting is completed, the units return to normal stopped status.)  
G To select each refrigerant system individually and perform automatic address setting, press the remote controller  
timer time  
temperature setting  
Use either the  
button and  
button simultaneously. (Hold for 4 seconds or longer.) Then press either the  
button. (Item code “A1” appears: Individual system automatic address setting)  
button to select the outdoor unit to perform automatic address setting. (For example,  
or  
or  
when selected R.C.1 “R.C.1” is displayed.) Then press the  
button. (Automatic address setting is performed for  
refrigerant circuit 1.) When automatic address setting for circuit 1 is completed, the system returns to normal  
stopped status. When automatic address setting for circuit 1 is completed, the system returns to normal stopped  
status. In the same way, press the remote controller timer time  
button and  
button simultaneously to perform  
automatic address setting for a different R.C. (refrigerant circuit) if necessary. Then in the same way as above (use  
the  
button to display “R.C.2,” for example), select the next circuit and perform automatic address setting.  
110  
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11-8-5. Indicating (marking) the indoor and outdoor unit combination number  
Indicate (mark) the number after automatic address setting is completed.  
(1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that the  
indoor and outdoor unit numbers correspond to the system address number on the outdoor unit control PCB, and  
use a magic marker or similar means which cannot be easily erased to indicate the numbers in an easily visible  
location on the indoor units (near the indoor unit nameplates).  
Example: (Outdoor) 1 - (Indoor) 1-1...(Outdoor) 2 - (Indoor) 2-2...  
(2) These numbers will be needed for maintenance. Be sure to indicate them.  
* Use the remote controller to check the addresses of the indoor units. Press and hold the  
button and  
button for 4 seconds or longer (simple settings mode). Then press the button and select the indoor  
address. (Each time the button is pressed, the address changes as follows: 1-1, 2-1, ....) The indoor unit fan  
operates only at the selected indoor unit. Confirm that correct fan is operating, and indicate address on the  
indoor unit.  
Press the  
button again to return to the normal remote controller mode.  
For details, refer to the separate handbook.  
11-8-6. Main-sub remote controller control  
Control using 2 remote controller switches  
Main-sub remote controller control refers to the use of 2 remote controllers to control 1 indoor unit.  
(A maximum of 2 remote controllers can be connected.)  
G Connecting 2 remote controllers to  
control 1 indoor unit  
Remote controller Remote controller  
switch (main)  
switch (sub)  
Optional  
1 2  
Optional  
1 2  
Remote controller wiring  
Terminal plate  
for remote  
controller wiring  
1 2  
Indoor unit  
U1U2  
Ground  
U1U2  
Outdoor unit  
Ground  
(Setting procedure)  
(1) Set 1 of the 2 connected remote controllers as the  
main remote controller.  
Remote controller  
Remote controller  
address connector  
Main  
RCU check  
Sub  
(2) On the other remote controller (sub remote  
controller), change the remote controller address  
connector on the reverse side of the remote controller  
switch PCB from the Main position to the Sub  
position.  
RCU. ADR  
The remote controller will now function as the sub  
remote controller.  
Fig. 11-8  
111  
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