Sanyo W 3way Eco I Xmhx1252 User Manual

INSTALLATION INSTRUCTIONS

– W-3WAY ECO-i System Air Conditioner –

for Refrigerant R410A

This air conditioner uses the new refrigerant R410A.

External diameter of service port R410A: 5/16"

NOTE

R410A Models

Indoor Units

Class

4-Way Air Discharge Semi-Concealed Type

1-Way Air Discharge Semi-Concealed Type

Concealed Duct Type

XHX1252 XHX1852 XHX2452 XHX3652

XMHX1252 XMHX1852

AHX0752

UHX0752

AHX0952 AHX1252

UHX1252 UHX1852 UHX2452 UHX3652

Concealed Duct

DHX3652 DHX4852

High-Static Pressure Type

Ceiling-Mounted Type

Wall-Mounted Type

THX1252 THX1852

THX2452

KHX0752

KHX0952 KHX1252 KHX1852 KHX2452

Outdoor Units

Class

140

CHDZ09053 CHDZ14053

CHDZR09053 CHDZR14053

ECO-i W-3WAY

* Refrigerant R410A is used in the outdoor units.

Optional Controllers

Timer Wired Remote Controller

Wireless Remote Controller (For U, D Types)

Wireless Remote Controller (For X Type)

Wireless Remote Controller (For XM Type)

Wireless Remote Controller (For A, T Types)

RC Wireless Remote Controller (For K Type)

Simplified Remote Controller

RCS-TM80BG

RCS-BH80AAB.WL

RCS-SH80AAB.WL

RCS-XM18AAB.WL

RCS-TRP80AAB.WL

RCS-SH1AAB

RCS-KR1AGB

System Controller

SHA-KC64UG

Intelligent Controller

SHA-KT256BA

Communication Adaptor

SHA-KA128AAB

ART-K45AGB

Remote Sensor

LonWorks Interface

SHA-LN16UAB

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

85464369098000 ©SANYO 2008

Bensenville, IL 60106, U.S.A.

L4K 5C7, Canada

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2. The standards for minimum room volume are as follows.

(1) No partition (shaded portion)

Check of Density Limit

The room in which the air conditioner is to be

installed requires a design that in the event of refrig-

erant gas leaking out, its density will not exceed a set

limit.

The refrigerant (R410A), which is used in the air condition-

er, is safe, without the toxicity or combustibility of ammonia,

and is not restricted by laws imposed to protect 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-exis-

tent. With the recent increase in the number of high density

buildings, however, the installation of multi air conditioner

systems is on the increase because of the need for effec-

tive use of floor space, individual control, energy conserva-

tion by curtailing heat and carrying power, etc.

(2) When there is an effective opening with the adjacent

room for ventilation of leaking refrigerant gas (open-

ing 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 compared 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 pro-

cedure so that if the refrigerant accidentally 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 small-

est room of course becomes the object. But when

mechanical ventilation is installed interlocked with a

gas leakage detector in the smallest room where the

density limit is exceeded, the volume of the next small-

est room becomes the object.

Refrigerant tubing

Outdoor unit

Total amount of refrigerant (lbs)

Very

small

Min. volume of the indoor unit installed room (ft.³)

Indoor unit

room

Density limit (oz/ft. )

The density limit of refrigerant which is used in multi air condi-

tioners is 0.3 oz/ft.³(ISO 5149).

Small

room

Medium

room

Large room

Mechanical ventilation device – Gas leak detector

NOTE

3. The minimum indoor floor space compared with the

amount of refrigerant is roughly as follows: (When the

ceiling is 8.8 ft. high)

1. If there are 2 or more refrigerating systems in a single

refrigerating device, the amount of refrigerant should be

as charged in each independent device.

ft.³

4000

ft.²

454

For the amount of charge in this example:

Range below

the density limit of

0.3 oz/ft.³

(countermeasures

not needed)

3500

3000

2500

2000

1500

1000

500

398

341

284

227

170

114

Outdoor unit

e.g., charged

amount (353 oz)

e.g., charged

amount (529 oz)

Indoor unit

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

The possible amount of leaked refrigerant gas in rooms A, B

and C is 353 oz.

The possible amount of leaked refrigerant gas in rooms D, E

and F is 529 oz.

200 400 600 800 1000 1200

Total amount of refrigerant

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Precautions for Installation Using New Refrigerant

1. Care regarding tubing

1-1. Process tubing

●

Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless

Pipes and Tubes.”

For tubes of ø7/8" (ø22.22 mm) or larger, use C1220 T-1/2H material or H material, and do not bend the tubes.

●

Tubing size: Be sure to use the sizes indicated in the table below.

●

Use a tube cutter when cutting the tubing, and be sure to remove any flash. This also applies to distribution joints

(optional).

●

When bending tubing, 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 caps or tape to

prevent dirt, moisture, or other foreign substances from entering.These substances

CAUTION

can result in system malfunction.

Unit: in. (mm)

Material

Outer diameter

Wall thickness

1/4 (6.35)

1/32 (0.8)

3/8 (9.52)

1/32 (0.8)

1/2 (12.7)

1/32 (0.8)

5/8 (15.88)

5/128 (1.0)

3/4 (19.05)

Copper tube

over 5/128 (1.0)

Unit: in. (mm)

Material

1/2 H, H

1-1/8 (28.58) 1-1/4 (31.75) 1-1/2 (38.1) 1-5/8 (41.28)

5/128 (1.0) 3/64 (1.1)

Outer diameter

Wall thickness

7/8 (22.22)

5/128 (1.0)

1 (25.4)

5/128 (1.0)

over 3/64 (1.15) over 3/64 (1.20)

1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A refriger-

ant 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

in the unit.

2-2. Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining refriger-

ant 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.

R407C tools

Manifold gauge

New

Item

compatible

with R410A?

Remarks

tool?

Manifold gauge Yes

Types of refrigerant, refrigerating machine

oil, and pressure gauge are different.

Charge hose

Yes

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

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.

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3-2.Use R410A exclusive cylinder only.

Valve

Single-outlet valve

(with siphon tube)

Liquid refrigerant should be recharged

with the cylinder standing on end as

shown.

Liquid

New refrigerant R410A cannot be used for

earlier models

1. Compressor specifications are different.

If recharging a R22 or R407C compressor with R410A,

durability will significantly decrease since some of the

materials used for compressor parts are different.

2. Existing tubing cannot be used (especially R22).

Completely cleaning out residual refrigerating

machine oil is impossible, even by flushing.

R410A

3. Refrigerating machine oil differs (R22).

Since R22 refrigerating machine oil is mineral oil, it

does not dissolve in R410A. Therefore, refrigerating

machine oil discharged from the compressor can cause

compressor damage.

R22 refrigerating machine oil

Mineral oil (Suniso oil)

R407C refrigerating machine oil Synthetic fluid (ether oil)

R410A refrigerating machine oil Synthetic fluid (ether oil)

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CONTENTS

Page

IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Please Read Before Starting

Check of Density Limit

Precautions for Installation Using New Refrigerant

New refrigerant R410A cannot be used for earlier models

1-Way Air Discharge Semi-Concealed Type

(A Type)

3-14. Suspending the Indoor Unit

3-15. Placing the Unit Inside the Ceiling

3-16. Installing the Drain Piping

3-17. Checking the Drainage

1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

1-1. Tools Required for Installation (not supplied)

1-2. Accessories Supplied

3-18. Electrical Power Wiring

3-19. How to Install the Ceiling Panel

Concealed Duct Type (U Type)

3-20. Required Minimum Space for Installation and

Service

1-3. Type of Copper Tube and Insulation Material

1-4. Additional Materials Required for Installation

1-5. Tubing Length

3-21. Suspending the Indoor Unit

3-22. Installing the Drain Piping

3-23. Checking the Drainage

3-24. Increasing the Fan Speed

1-6. Tubing Size

1-7. Straight Equivalent Length of Joints

1-8. Additional Refrigerant Charge

1-9. System Limitations

1-10. Installation Standards

1-11. Check of Limit Density

Concealed Duct High-Static Pressure Type

(D Type)

1-12. Installing Distribution Joint

3-25. Required Minimum Space for Installation and

Service

3-26. Suspending the Indoor Unit

3-27. Installing the Drain Piping

3-28. Caution for Ducting Work

3-29. Indoor Fan Performance

1-13. Optional Distribution Joint Kits

1-14. Optional Solenoid Valve Kit

1-15. Example of Tubing Size Selection and

Refrigerant Charge Amount

2. SELECTING THE INSTALLATION SITE . . . . 23

2-1. Indoor Unit

Ceiling-Mounted Type (T Type)

3-30. Required Minimum Space for Installation and

Service

3-31. Suspending the Indoor Unit

3-32. Duct for Fresh Air

2-2. Outdoor Unit

2-3. Precautions When Installing in Heavy Snow

Areas

2-4. Dimensions of Wind Ducting

2-5. Dimensions of Snow Ducting

3-33. Shaping the Tubing

3-34. Installing the Drain Piping

3. HOW TO INSTALL THE INDOOR UNIT . . . . . 28

Wall-Mounted Type (K Type)

4-Way Air Discharge Semi-Concealed Type

(X Type)

3-35. Removing the Rear Panel from the Unit

3-36. Selecting and Making a Hole

3-37. Installing the Rear Panel onto the Wall

3-38. Removing the Grille to Install the Indoor Unit

3-39. Preparing the Tubing

3-40. Shaping the Tubing

3-41. Installing the Drain Hose

3-42. When Using Wireless Remote Controller

Instead of Wired Remote Controller

3-1. Preparation for Suspending

3-2. Suspending the Indoor Unit

3-3. Placing the Unit Inside the Ceiling

3-4. Installing the Drain Piping

3-5. Checking the Drainage

3-6. How to Install the Ceiling Panel

3-7. Special Remarks

(XM Type)

4. HOW TO INSTALL THE OUTDOOR UNIT . . . 64

4-1. Transporting

3-8. Preparation for Suspending

3-9. Suspending the Indoor Unit

3-10. Placing the Unit Inside the Ceiling

3-11. Installing the Drain Piping

3-12. Checking the Drainage

3-13. How to Install the Ceiling Panel

4-2. Installing the Outdoor Unit

4-3. Remove the Brackets Used for Transport

4-4. Routing the Tubing

4-5. Prepare the Tubing

4-6. Connect the Tubing

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Page

5. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . 68

5-1. General Precautions on Wiring

5-2. Recommended Wire Length and Wire

Diameter for Power Supply System

5-3. Wiring System Diagram

5-4. Important Note When Wiring for

Common Type

5-5. Important Note When Wiring for

XM Type

HOW TO PROCESS TUBING . . . . . . . . . . . . 76

6-1. Connecting the Refrigerant Tubing

6-2. Connecting Tubing Between Indoor and

Outdoor Units

6-3. Insulating the Refrigerant Tubing

6-4. Taping the Tubes

6-5. Finishing the Installation

7. AIR PURGING . . . . . . . . . . . . . . . . . . . . . . . . . 80

Air Purging with a Vacuum Pump (for Test Run)

Preparation

8. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

8-1. Preparing for Test Run

8-2. Test Run Procedure

8-3. Main Outdoor Unit PCB Setting

8-4. Auto Address Setting

8-5. Remote Controller Test Run Settings

8-6. Caution for Pump Down

8-7. Meaning of Alarm Messages

9. APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

9-1. 4-Way Air Discharge Semi-Concealed Type

(X, XM Types)

9-2. 1-Way Air Discharge Semi-Concealed Type

(A Type)

9-3. Concealed Duct (High-Static Pressure) Type

(U, D Types)

9-4. Ceiling-Mounted Type (T Type)

9-5. Wall-Mounted Type (K Type)

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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 outdoor unit and make sure all accessory parts listed are with the system before beginning.

1-1. Tools Required for Installation (not supplied)

1-3. Type of Copper Tube and Insulation Material

1. Flathead screwdriver

2. Phillips head screwdriver

3. Knife or wire stripper

4. Tape measure

If you wish to purchase these materials separately from a

local source, you will need:

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.

5. Carpenter’s level

6. Sabre saw or key hole saw

7. Hacksaw

3. Use insulated copper wire for field wiring. Wire size varies

with the total length of wiring.

8. Core bits

9. Hammer

Refer to

“5. ELECTRICAL WIRING” for details.

10. Drill

11. Tube cutter

Check local electrical codes and

regulations before obtaining

wire. Also, check any specified

instructions or limitations.

12. Tube flaring tool

13. Torque wrench

14. Adjustable wrench

15. Reamer (for deburring)

CAUTION

1-4. Additional Materials Required for Installation

1-2. Accessories Supplied

1. Refrigeration (armored) tape

See Tables 1-1 – 1-8.

2. Insulated staples or clamps for connecting wire

(See your local codes.)

3. Putty

4. Refrigeration tubing lubricant

5. Clamps or saddles to secure refrigerant tubing

6. Scale for weighing

Table 1-1 Outdoor Unit

Q’ty

Part name

Connection tubing

Instruction manual

Figure

09053 Model

14053 Model

(16 hp)

(10 hp)

Outer

diameter

ø1-1/8"

Inner

diameter

ø1"

Outer

diameter

ø7/8"

Inner

diameter

ø3/4"

paper

(hp = horse power)

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Table 1-2 (4-Way Air Discharge Semi-Concealed) (X-Type)

Part Name

Figure

Q’ty

Remarks

Full-scale installation diagram

Printed on container box

For securing drain hose

For drain joint

Drain hose

Hose band

Drain insulator

For liquid tube

Flare insulator

For gas tube

White

(heat-resisting)

Insulating tape

Packing

For gas tube joint

For drain joint

Wiring cover

Screw

For covering electrical wiring

For full-scale installation diagram

For suspending indoor unit from ceiling

For fixing the wiring cover

Washer

Screw

Table 1-3 (1-Way Air Discharge Semi-Concealed)

Part Name

Figure

Q’ty

Remarks

Full-scale installation diagram

Printed on container box

Drain hose

For securing drain hose

For drain joint

Hose band

Drain insulator

For liquid tube

Flare insulator

For gas tube

White

(heat-resisting)

Insulating tape

Packing

For gas tube joint

For drain joint

Washer

For suspending indoor unit from ceiling

For full-scale installation diagram

For electrical junction box

Screw

Bushing

Table 1-4 (Concealed Duct)

Part Name

Figure

Q’ty

Remarks

Drain hose

For securing drain hose

Hose band

For securing drain hose

For drain joint

Packing

Drain insulator

Flare insulator

Insulating tape

Flare insulator

Washer

For drain joint

For liquid tube

White

(heat-resisting)

For gas and liquid tubes flare nuts

For gas tube

For suspending indoor unit from ceiling

For sealing recessed portion of power supply

For flare and drain insulators

Sealing putty

Vinyl clamp

●

Use M10 or 3/8" for suspending bolts.

Field supply for suspending bolts and nuts.

●

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Table 1-5 (Concealed Duct High-Static Pressure)

Part Name

Figure

Q’ty

Remarks

Washer

Nut

For suspending indoor unit from ceiling

For gas tube

Flare insulator

Drain socket

For liquid tube

For drain pipe connection

Table 1-6 (Ceiling-Mounted)

Part Name

Figure

Q’ty

Remarks

Full-scale installation diagram

Printed on container box

Washer

For temporarily suspending indoor unit from ceiling

T1/8"

Flare insulator

For gas and liquid tube joints

T3/16"

White

Insulating tape

Vinyl clamp

Drain hose

For gas and liquid tubes flare nuts

For flare and drain insulators

For main unit and PVC pipe joints

For drain hose connection

(heat-resisting)

L5-1/2"

Hose band

Drain insulator

Gum eyelet

For drain hose joint

For power supply inlet and 3 way wiring inlet

Table 1-7 (Wall-Mounted)

Part Name

Figure

Q’ty

Remarks

5/32" s 1"

Tapping screw

For fixing the rear panel

Plastic cover

Insulator

For improved tubing appearance

For insulating flare nut (2452 type only)

Table 1-8 (4-Way Air Discharge Semi-Concealed) (XM Type)

Parts Name

Figure

Q'ty

Remarks

Parts Name

Full-scale

installation

diagram

Figure

Q'ty

Remarks

Printed on

For temporarily

suspending indoor

unit from ceiling

Washer

container box

For full-scale

installation

diagram

For gas /

liquid tube

connection

Flare

insulation

set

Washer head

screw

For gas /

liquid tube / flare

nut connection

For unit & PVC

tube connection

Insulation tie

Vinyl tie

Drain hose

Hose band

L140

For flare / drain

insulating

connection

For drain hose

connection

Drain hose

insulation

For drain tube

connection

T10

●

Use M10 or 3/8" for suspending bolts.

Field supply for suspending bolts and nuts.

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1-5. Tubing Length

Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown

Main tubing length LM = LA + LB … b 262 ft.

Main distribution tubes LC – LH are selected according to the capacity after the

distribution joint.

in the figure below.

Sizes of indoor unit connection tubing 1 – 40 are determined by the connection tubing

sizes on the indoor units.

T-joint tubing

(header joint system)

Balance tubing

(ø9.52)

For

Explanation of symbols

Distribution joint

extension

Max. 1.3 ft.

For

extension

(APR: purchased separately)

Solenoid valve kit

Ball valve (field supply)

T-joint (field supply)

Solidly welded shut

(pinch weld)

R410A distribution joint

APR-CHRZP900BAB (for outdoor unit)

APR-RZP224BAB (for indoor unit)

APR-RZP680BAB (for indoor unit)

APR-RZP1350BAB (for indoor unit)

Note: Do not use commercially available T-joints for the liquid tubing

and ꢀꢀꢀꢀ parts.

* Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor

unit connections and tubing branches.

Table 1-9 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights

Item

Mark

Contents

Length (ft.)

Actual length

492

Max. tubing length

574

Equivalent length

Difference between max. length and min.

length from the No. 1 distribution joint

131

$L (L2 – L4)

Allowable tubing

length

262

Max. length of main tubing (at max. diameter)

Max. length of each distribution tube

...

L1+

...

Total max. tubing length including length of

984

+LF+LG+LH each distribution tube (only liquid tubing)

Distance between outdoor units

When outdoor unit is installed higher than indoor unit

164

131

When outdoor unit is installed lower than indoor unit

Allowable elevation

difference

Max. difference between indoor units

Max. difference between outdoor units

Allowable length of

joint tubing

T-joint tubing (field-supply); Max. tubing length between

the first T-joint and solidly welded-shut end point

6.6

L = Length, H = Height

NOTE

1: If the longest tubing length (L1) exceeds 295 ft. (equivalent length), increase the sizes of the main tubes (LM) by 1 rank for

the discharge tubes, suction tubes, and liquid tubes. (Use a field supply reducer.)

2: If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for

the suction tubes and discharge tubes. (Use a field supply reducer.)

(For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table on the following page.)

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1-6. Tubing Size

Unit: in. (mm)

Table 1-10 Main Tubing Size (LA)

BTU/h

95.500 153.600 191.000 249.100 307.100

Total system

horsepower

Combined

outdoor units

ø7/8"

(ø22.22)

ø1-1/8"

(ø28.58)

ø1-3/8"

(ø34.92)

Suction tubing

Discharge tubing

Liquid tubing

ø3/4"

(ø19.05)

ø7/8"

(ø22.22)

ø1-1/8"

(ø28.58)

ø3/8"

ø1/2"

ø5/8"

ø3/4"

(ø19.05)

(ø9.52) (ø12.70) (ø15.88)

*1: If future extension is planned, select the tubing diameter based on the total horsepower after extension.

However extension is not possible if the resulting tubing size is two ranks higher.

*2: The balance tube (outdoor unit tube) diameter is ø3/8" (ø9.52).

*3: Type 1 tubing should be used for the refrigerant tubes.

*4: If the length of the longest tube (L1) exceeds 295 ft. (equivalent length), increase the main tube (LM) size by 1 rank for the

suction, discharge, and liquid tubes. (Use field-supply reducers.) (Select from Table 1-10 and Table 1-15.)

*5: If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for

the suction tubes and discharge tubes.

(For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table above.)

Unit: in. (mm)

Table 1-11 Main Tubing Size After Distribution (LB, LC...)

hp = horsepower

102.400

(11 hp)

124.200

(13 hp)

24.200

(2.5 hp)

54.600

(6 hp)

85.300

(9 hp)

143.300

(15 hp)

162.400 200.600

238.900

(25 hp)

Below BTU/h

Over BTU/h

(17 hp)

(21 hp)

Total capacity

after distribution

102.400

(11 hp)

85.300

(9 hp)

24.200

(2.5 hp)

54.600

(6 hp)

124.200

(13 hp)

143.300 162.400 200.600

–

(15 hp)

(17 hp)

(21 hp)

ø5/8"

ø3/4"

ø7/8"

ø1-1/8"

Suction tubing

Discharge tubing

Liquid tubing

(ø15.88) (ø19.05) (ø19.05) (ø22.22) (ø28.58) (ø28.58) (ø28.58) (ø28.58) (ø28.58)

ø1/2" ø5/8" ø5/8" ø3/4" ø3/4" ø7/8" ø7/8" ø7/8" ø1-1/8"

(ø12.70) (ø15.88) (ø15.88) (ø19.05) (ø19.05) (ø22.22) (ø22.22) (ø22.22) (ø28.58)

ø3/8"

(ø9.52) (ø9.52)

Tubing size

ø3/8"

(ø9.52)

ø3/8"

ø1/2"

ø5/8"

(ø9.52) (ø12.70) (ø12.70) (ø12.70) (ø15.88) (ø15.88)

258.000 334.400

Below BTU/h

Over BTU/h

–

*1: If the total capacity of the indoor units con-

nected to the tube ends is different from the

total capacity of the outdoor units, then the

main tube size is selected based on the total

capacity of the outdoor units.

(27 hp)

(35 hp)

Total capacity

after distribution

238.900 258.000 334.400

(25 hp)

(27 hp)

(35 hp)

ø1-3/8" ø1-3/8" ø1-1/2"

(ø34.93) (ø34.93) (ø38.10)

ø1-1/8" ø1-1/8" ø1-1/8"

(ø28.58) (ø28.58) (ø28.58)

Suction tubing

Discharge tubing

Liquid tubing

Tubing size

(For LA, LB, and LF in particular)

ø3/4"

(ø19.05) (ø19.05) (ø19.05)

Table 1-12 Outdoor Unit Tubing Connection Size ( A – D)

BTU/h

95.500

153.600

ø7/8"(ø22.22)

ø1-1/8"(ø28.58)

Suction tubing

Brazing connection

ø3/4"(ø19.05)

ø3/8"(ø9.52)

ø7/8"(ø22.22)

Discharge

tubing

Brazing connection

ø1/2"(ø12.7)

Liquid tubing

Brazing connection

ø3/8"(ø9.52)

Flare connection

Balance tubing

Unit: in. (mm)

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Table 1-13 Indoor Unit Tubing Connection Size ( 1 – 40)

in. (mm)

Indoor unit type

0.8

Total system horsepower

1.3

ø5/8"

Suction tubing

Discharge tubing

Liquid tubing

Distribution

joint –

solenoid valve

kit tubing

(ø15.88)

ø1/2"

(ø12.70)

ø3/8"

(ø9.52)

ø1/2"

ø5/8"

Solenoid valve

kit – Indoor

unit tubing

Gas tubing

(ø12.70)

(ø15.88)

ø1/4"

ø3/8"

Liquid tubing

connection

(ø6.35)

(ø9.52)

*1: For the solenoid valve kits, use type 160 with parallel specifications. Branch the tubing before and after the solenoid valve kits.

1-7. Straight Equivalent Length of Joints

Design the tubing system by referring to the following table for the straight equivalent length of joints.

Table 1-14 Straight Equivalent Length of Joints

1/2"

5/8"

3/4"

7/8"

1-1/8" 1-1/4" 1-1/2"

Gas tubing size (in.(mm))

90o elbow

(12.7) (15.88) (19.05) (22.22) (25.4) (28.58) (31.8)

(38.1)

1 ft. 1.1 ft. 1.4 ft. 1.6 ft. 1.7 ft. 1.9 ft. 2.3 ft.

(0.30 m) (0.35 m) (0.42 m) (0.48 m) (0.52 m) (0.57 m) (0.70m) (0.79 m)

2.6 ft.

0.8 ft.

0.9 ft.

1 ft.

1.2 ft.

1.3 ft.

1.4 ft.

1.7 ft.

1.9 ft.

45o elbow

(0.23 m) (0.26 m) (0.32 m) (0.36 m) (0.39 m) (0.43 m) (0.53 m) (0.59 m)

U-shape tube bent

3 ft. 3.4 ft. 4.1 ft. 4.7 ft. 5.1 ft. 5.6 ft. 6.9 ft. 7.8 ft.

(0.90 m) (1.05 m) (1.26 m) (1.44 m) (1.56 m) (1.71 m) (2.10 m) (2.37 m)

7.5 ft. 9.2 ft. 10.5 ft. 12.5 ft. 14.1 ft. 15.4 ft. 16.4 ft. 14.0 ft.

(R2–23/64–3–15/16 in.)

Trap bend

(2.30 m) (2.80 m) (3.20 m) (3.80 m) (4.30 m) (4.70 m) (5.00 m) (5.80 m)

Y-branch distribution joint

Ball valve for service

Equivalent length conversion not needed.

Table 1-15 Refrigerant tubing (Existing tubing can be used.)

Tubing size (in. (mm))

* When bending the tubes, use a bending

radius that is at least 4 times the outer

diameter of the tubes.

In addition, take sufficient care to avoid

crushing or damaging the tubes when

bending them.

Material O

Material 1/2H • H

ø1/4" (ø6.35)

t1/32 (t0.8)

t5/128 (t1.0)

ø3/8" (ø9.52)

ø1/2" (ø12.7)

ø5/8" (ø15.88)

ø3/4" (ø19.05)

ø7/8" (ø22.22)

ø1-1/8" (ø28.58)

t5/128 (t1.0)

t3/64 (t1.1)

ø1-1/4" (ø31.75)

ø1-1/2" (ø38.10)

over t3/64 (t1.15)

over t3/64 (t1.20)

over t5/128 (t1.0) ø1-5/8" (ø41.28)

t5/128 (t1.0)

1-8. Additional Refrigerant Charge

Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.

Table 1-16-1 Amount of Refrigerant Charge Per ft.,

Required amount of charge = Necessary Amount of

Refrigerant Charge Per Unit (14053 Type) + (Amount

of refrigerant charge per ft. of each size of liquid tube

According to Liquid Tubing Size

Liquid tubing

size

ø1/4"

ø3/8"

ø1/2"

ø5/8"

ø3/4"

ø7/8"

(ø6.35) (ø9.52) (ø12.7) (ø15.88) (ø19.05) (ø22.22)

its tube length) + (...) + (...)

Amount of

refrigerant

0.279 0.602 1.38

1.99

2.78

3.93

* Always charge accurately using a scale for weighing.

charge (oz/ft.)

Table 1-16-2 Necessary Amount of Refrigerant

Charge Per Unit

CHDZ09053

CHDZR09053

—

CHDZ14053

CHDZR14053

113 oz/unit

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Table 1-17 Refrigerant Charge Amount at Shipment (for outdoor unit)

CHDZ09053

CHDZR09053

CHDZ14053

CHDZR14053

(oz)

416

1-9. System Limitations

Table 1-18 System Limitations

Max. No. allowable connected outdoor units

Max. capacity allowable connected outdoor units

Max. connectable indoor units

307,100 BTU/h (32 hp, 90 kw)

Max. allowable indoor/outdoor capacity ratio

50 – 130 %

*1: In the case of 20 hp (type 191.100 BTU/h) or smaller units, the number is limited by the total capacity of the connected indoor units.

1-10. Installation Standards

Relationship between A/C units and refrigerant tubing

4-tube layout

3-tube layout

Solenoid

valve kit

2-tube layout

Outdoor unit

Indoor unit

Suction tube

Discharge tube

Liquid tube

Suction tube

Discharge tube

Liquid tube

Gas tube

Liquid tube

Balance tube

●

Install the solenoid valve kit 98 ft. or less from the indoor unit.

In quiet locations such as hospitals, libraries, and hotel rooms, the refrigerant noise may be somewhat notice-

able. It is recommended that the solenoid valve kit be installed inside the corridor ceiling, at a location outside

the room.

Room

Indoor unit

Room

Indoor unit

Room

Indoor unit

YES

Hallway

Solenoid

valve kit

Solenoid

valve kit

Common solenoid valve kit

●

Multiple indoor units under group control can utilize a solenoid valve kit in common.

Categories of connected indoor unit capacities are determined by the solenoid valve kit.

●

Type of solenoid valve kit

Total capacity of indoor units (BTU/h)

160

19.000 Total capacity 54.600

7.500 Total capacity 19.000

●

If the capacity range is exceeded, use 2 solenoid valves connected in parallel.

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tubing to the malfunctioning unit will accumulate

and may damage the compressor.)

Always check the gas density

limit for the room in which the

unit is installed.

WARNING

Minimum indoor volume & floor area as against the

amount of refrigerant is roughly as given in the follow-

ing table.

1-11. Check of Limit Density

When installing an air conditioner in a room, it is necessary

to ensure that even if the refrigerant gas accidentally leaks

out, its density does not exceed the limit level for that room.

If the density could exceed the limit level, it is necessary to

provide an opening between the unit and the adjacent room,

or to install mechanical ventilation which is interlocked with

a leak detector.

ft.³

10000

ft.²

1136

1079

1022

966

909

852

795

738

682

625

568

511

454

398

341

284

227

170

114

9500

9000

8500

8000

7500

7000

6500

6000

5500

5000

4500

4000

3500

3000

2500

2000

1500

1000

500

Range below

the density limit of

0.3 oz/ft.³

(countermeasures

not needed)

(Total refrigerant charged amount: oz)

(Min. indoor volume where the indoor unit is installed: ft.³)

Range above

the density limit of

0.3 oz/ft.³

(countermeasures

needed)

Limit density 0.3 (oz/ft. )

The limit density of refrigerant which is used in this unit is

0.3 oz/ft. (ISO 5149).

The shipped outdoor unit comes charged with the amount of

refrigerant fixed for each type, so add it to the amount that

is charged in the field. (For the refrigerant charge amount at

shipment, refer to the unit’s nameplate.)

500 1000 1500 2000 2500 3000

Total amount of refrigerant

Tube branching methods (horizontal use)

1-12. Installing Distribution Joint

Pay special attention to any

location, such as a basement,

etc., where leaking refrigerant

can accumulate, since refrig-

erant gas is heavier than air.

CAUTION

Horizontal

line

View as seen

from arrow

(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT”

enclosed with the optional distribution joint kit

(APR-CHRZP900BAB, RZP224BAB, RZP680BAB,

RZP1350BAB).

Arrow view

Header joint system (Indoor)

Install at a

positive angle

(2) When creating a branch using a commercially available

T-joint (header joint system), orient the main tubing so

that it is either horizontal (level) or vertical. In order to

prevent accumulation of refrigerant oil in stopped units,

if the main tubing is horizontal then each branch tubing

length should be at an angle that is greater than horizon-

tal. If the main tubing is vertical, provide a raised starting

portion for each branch.

Outdoor

Indoor

Install at a

positive angle

(15 – 30°)

Indoor

Horizontal

line

Indoor

L3 6.56 ft.

Horizontal

line

Solidly welded

shut (X)

[Header joint system]

Types of vertical trap specifications

(When using ball valve)

Main tubing

●

Be sure to solidly weld shut the T-joint end (marked

by “X” in the figure). In addition, pay attention to the

insertion depth of each connected tube so that the

flow of refrigerant within the T-joint is not impeded.

●

Indoor unit (more than 2 units)

When using the header joint system, do not make fur-

Ball valve

(If only 1 unit is connected, a ball valve

is also needed on this side.)

(BV: purchased

separately)

ther branches in the tubing.

Do not use the header joint system on the outdoor

●

Indoor unit (1)

unit side.

(When not using ball valve)

(3) If there are height differences between indoor units or if

branch tubing that follows a distribution joint is connect-

ed to only 1 unit, a trap or ball valve must be added to

that distribution joint. (When adding the ball valve, locate

it within 15 - 3/4" of the distribution joint.)

Main tubing

Horizontal

Indoor unit

(Each unit is connected

to tubing that is either

level or is directed

downward.)

Branch tubing is

directed upward.

More than

7–7/8"

If a trap or ball valve is not added, do not operate

the system before repairs to a malfunctioning unit

are completed. (The refrigerant oil sent through the

Indoor unit is directed downward

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1-13. Optional Distribution Joint Kits

See the installation instructions packaged with the distribution joint kit for the installation procedure.

Table 1-19

Model name

Cooling capacity after distribution

307.100 BTU/h or less

Remarks

1. APR-CHRZP900BAB

2. APR-RZP224BAB

3. APR-RZP680BAB

4. APR-RZP1350BAB

For outdoor unit

For indoor unit

76.400 BTU/h or less

232.000 BTU/h or less

460.700 BTU/h or less

Tubing size (with thermal insulation)

■

1. APR-CHRZP900BAB

For outdoor unit (Capacity after distribution joint is 307.100 BTU/h or less.)

Note that the dimension marked with every alphabetical letter in the diagram shows the inner diameter.

Suction Tube

11-13/16

Discharge Tube

11-13/16

Liquid Tube

E D

D E F

E FG

H I

13-25/64

Distribution

Joint

Insulation

Unit: in.

*Insulators for both the Suction tube and the Discharge tube are the same.

*Suction tube and Discharge tube are similar in sizes and both the tube entrances have the same diameter. So the both

Distribution joints can fit into different tubes. Since the diameter of the tube ends for both Suction and Discharge tube are

different, take care not to connect the distribution joint different. See the " # " marks on the above figures.

Table 1-20 Dimensions for connections of each part

Size

Inch

Part B

1-1/4

Part C

1-1/8

Part D

Part E

7/8

Part F

3/4

Part G

5/8

Part H

1/2

Part I

3/8

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Table 1-21 Dimensions for connections of each part

Unit: in.

Position

Dimension

ø1-1/2" ø1-1/4"

ø1-1/8"

ø1"

ø7/8"

ø3/4"

ø5/8"

ø1/2"

ø3/8"

–

2. APR-RZP224BAB

Use: For indoor unit (Capacity after distribution joint is 76.400 BTU/h or less.)

Example: (F below indicates inner diameter.

below indicates outer diameter.)

Liquid tubing

Discharge tubing

Suction tubing

8–17/64

7–21/64

9–1/4

G H

1–37/64

H G

G H

2–11/64

H I

5–45/64

5–23/64

Thermal insulation

Unit: in.

Thermal insulation

3. APR-RZP680BAB

Use: For indoor unit (Capacity after distribution joint is greater than 76.400 BTU/h and no more than 232.000 BTU/h.)

Note that the dimension marked with every alphabetical letter in the diagram shows the inner diameter.

Suction Tube

11-13/16

Discharge Tube

Liquid Tube

11-13/16

DEF

EF GH

F ED

GFE

EFG

13-25/64

Insulation

Unit: in.

*Insulators for both the Suction tube and the Discharge tube are the same.

*Suction tube and Discharge tube are similar in sizes and both the tube entrances have the same diameter. So the both

Distribution joints can fit into different tubes. Since the diameter of the tube ends for both Suction and Discharge tube are

different, take care not to connect the distribution joint different. See the " # " marks on the above figures.

4. APR-RZP1350BAB

Use: For indoor unit (Capacity after distribution joint is greater than 232.000 BTU/h and no more than 460.700 BTU/h.)

Example: (B below indicates inner diameter.

below indicates outer diameter.)

Liquid tubing

Suction tubing • Discharge tubing

G F

D E

13–25/64

1–31/32

3–35/64

4–9/64 4–13/32

Thermal insulation

Unit: in.

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1-14. Optional Solenoid Valve Kit

Precautions on Installation of Solenoid Valve Kit

(1) Clean base metals thoroughly.

(2) Use proper ventilation to carry fumes away from the work area.

(3) Use a high quality silver based solder of at least 15 % silver.

(4) Heat the base materials broadly and uniformly.

(5) Take precautions not to overheat the device which could damage sensitive internal components.

(6) Insure compliance with all local codes!

Specifications

ATK-RZP56BAWB

Types and specifications of

tubing connections

Part

Number

ATK-RZP56BAWB

Gas tube: ID1/2"

Compatibility

7.500 Total capacity of indoor units (BTU/h) < 19.000

Liquid tube : ID1/4"

Suspension hook

Power source Single-phase 200V 50/60Hz (supplied by indoor unit)

Power input

Net weight

Accessories

20 W

Liquid tube : ID3/8"

Suction tube: ID5/8"

Discharge tube: ID1/2"

Service panel

151.7 oz.

Washer x 2

Insulating tape

Base of control box

Terminal for power line

Terminal for communication line

Earth (M5 with washer)

Cover of control box

Relay kit

Cover of relay kit

5-25/32

9-13/32

4-21/64

5-55/64

4-21/64

5-55/64

5-3/64

4-1/4

2-3/64

3-25/32

Unit: in.

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Specifications

ATK-RZP160BAWB

Types and specifications of

tubing connections

Part

Number

ATK-RZP160BAWB

Gas tube: ID5/8"

Compatibility

19.000 Total capacity of indoor units (BTU/h) < 54.600

Liquid tube : ID3/8"

Suspension hook

Power source Single-phase 200V 50/60Hz (supplied by indoor unit)

Power input

Net weight

Accessories

25 W

Liquid tube : ID3/8"

Suction tube: ID5/8"

Discharge tube: ID1/2"

Service panel

165.8 oz.

Washer x 2

Insulating tape

Base of control box

Terminal for power line

Terminal for communication line

Earth (M5 with washer)

Cover of control box

Relay kit

Cover of relay kit

5-25/32

4-21/64

9-13/32

5-55/64

4-21/64

5-55/64

5-3/64

4-1/4

3-25/32

2-3/64

Unit: in.

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Installation of Solenoid Valve Kit

1. Install the relay kit into the indoor unit.

Refer to the Installation Manual for the solenoid valve kit.

2. Connect the solenoid valve kit and the relay kit in the field.

Suspension hook

Gas tube

Liquid tube

Top surface

Connect with

conduit for

power supply

Discharge tube

Relay kit

Front

Liquid tube

Suction tube

Cover of control box

NOTE

Notes on Installation

• Be sure to secure the valve body by using its structure with the suspension bolt, etc.

• Install the valve body within a distance of 98 ft. from the indoor unit.

Some refrigerant noise will be produced. Therefore in hospitals, libraries, hotel guest rooms, and other quiet

locations, it is recommended that the solenoid valve kit be installed on the ceiling reverse side of a hallway or

another location separated from the room.

• When installing the valve body, install with the top surface facing up. Secure 7-7/8" or more of space to the front

so that the front service panel can be removed.

• If the supplied suspension hook will not be used, and other fastening devices will be attached in the field, use

the 4 screw holes on the top surface. DO NOT use any long screws other than the supplied screws. Use of other

screws may puncture the internal tubing, resulting in refrigerant leakage.

• Do not block the air holes.

Suspension bolt (3/8" or M10) (field supplied)

Nut (field supplied) (3/8" or M10)

M4 screws

(12 pcs.)

Washer

Suspension hook

Front

Service space

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1-15. Example of Tubing Size Selection and Refrigerant Charge Amount

Additional refrigerant charging

Based on the values in Tables 1-10, 11, 12, 15 and 16-2 use the liquid tubing size and length, and calculate the amount of additional

refrigerant charge using the formula below.

Necessary Amount of Refrigerant Charge Per Unit + 3.93 (a) + 2.78 (b) + 1.99 (c) + 1.38 (d) +

Required additional

refrigerant charge (oz)

0.602 (e) + 0.279 (f)

(a) : Liquid tubing

(b) : Liquid tubing

Total length of ø7/8" (ft.)

Total length of ø3/4" (ft.)

Total length of ø5/8" (ft.)

(d) : Liquid tubing

(e) : Liquid tubing

(f) : Liquid tubing

Total length of ø1/2" (ft.)

Total length of ø3/8" (ft.)

Total length of ø1/4" (ft.)

Charging procedure

●

Be sure to charge with R410A refrigerant in liquid form.

1. After performing a vacuum, charge with refrigerant from the liquid tubing side. At this time, all valves must be in the “fully

closed” position.

2. If it was not possible to charge the designated amount, operate the system in Cooling mode while charging with refrigerant

from the gas tubing side. (This is performed at the time of the test run. For this, all valves must be in the “fully open” position.

However if only one outdoor unit is installed, a balance tube is not used. Therefore, leave the valves fully closed.)

Charge with R410A refrigerant in liquid form.

With R410A refrigerant, charge while adjusting the amount being fed a little at a time in order to prevent liquid refrigerant from

backing up.

After charging is completed, turn all valves to the “fully open” position.

Replace the tubing covers as they were before.

●

1. R410A additional charging absolutely must

Balance tube

be done through liquid charging.

Use a flathead screwdriver

CAUTION

and open by turning the part

with the screw groove to the

2. The R410A refrigerant cylinder has a gray

base color, and the top part is pink.

right, from " " to "

3. The R410A refrigerant cylinder includes a

siphon tube. Check that the siphon tube is

present. (This is indicated on the label at

the top of the cylinder.)

Liquid tube

Use a hex wrench (width 5/32 inch)

and turn to the left to open.

4. Due to differences in the refrigerant, pres-

sure, and refrigerant oil involved in instal-

lation, it is not possible in some cases to

use the same tools for R22 and for R410A.

Discharge tube

Suction tube

Use a flathead screwdriver

and open by turning the part

with the screw groove to the

Use a flathead screwdriver

and open by turning the part

with the screw groove to the

Example:

Outdoor unit

right, from " " to "

09053

model

09053

model

48 model

36 model

Example of each tubing length

●

Main tubing

Distribution joint tubing

LA = 131 ft.

LB = 16 ft.

LC = 16 ft.

Outdoor side

A = 7 ft.

Indoor side

1 = 98 ft.

2 = 16 ft.

3 = 16 ft.

4 = 65 ft.

B = 7 ft.

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Obtain liquid tubing size from Tables 1-10, 11, 12 and 15.

●

Main tubing

LA = ø5/8 (ft.) (Total capacity of indoor unit is 179,400 BTU/h)

LB = ø1/2 (ft.) (Total capacity of indoor unit is 131,600 BTU/h)

LC = ø3/8 (ft.) (Total capacity of indoor unit is 83,800 BTU/h)

The longest tubing length in this example

(LA = 131 ft.)

Distribution joint tubing

Outdoor side

Indoor side

A: ø3/8 (ft.)

1: ø3/8 (ft.)

B: ø3/8 (ft.) (from outdoor unit connection tubing)

2: ø3/8 (ft.) 3: ø3/8 (ft.) 4: ø3/8 (ft.) (from indoor unit connection tubing)

Obtain charge amount for each tubing size

●

Note that the charge amounts per 1 meter are different for each liquid tubing size.

ø5/8 (ft.)

ø1/2 (ft.)

ø3/8 (ft.)

: 131 ft. 1.99 oz/ft.

= 261 oz

= 22 oz

→

: 16 ft. 1.38 oz/ft.

LC + A – B + 1 – 4 : 225 ft. 0.602 oz/ft. = 135 oz

Total 418 oz

Additional refrigerant charge amount is 418 oz.

Remark:

When operating only one model CHDZ (R) 14053 or jointing with one more model, be sure to include the values in Table 1-16-2

Necessary Amount of Refrigerant Charge Per Unit.

Be sure to check the limit density for

CAUTION

the room in which the indoor unit is

installed.

Checking of limit density

Density limit is determined on the basis of the size of a room

using an indoor unit of minimum capacity. For instance, when

an indoor unit is used in a room (floor area 161 ft.²ceil-

ft.³

4000

ft.²

454

ing height 8.8 ft. = room volume 1417 ft.³), the graph at right

shows that the minimum room volume should be 2455 ft.³

(floor area 279 ft.²) for refrigerant of 418 oz.

Range below

the density limit of

0.3 oz/ft.³

(countermeasures

not needed)

3500

3000

2500

2000

1500

1000

500

398

341

284

227

170

114

Overall refrigerant charge amount for the air conditioner: oz

Range above

the density limit of

0.3 oz/ft.³

(countermeasures

needed)

(Minimum room volume for indoor unit: ft.³)

418 (oz)

= 0.29 (oz/ft.³) < 0.3 (oz/ft.³)

1417 (ft.³)

200 400 600 800 1000 1200

Total amount of refrigerant

Therefore, openings such as louvers are not required for this

room.

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Ceiling-MountedType

2. SELECTING THE INSTALLATION SITE

Ceiling

2-1. Indoor Unit

AVOID:

Wall

areas where leakage of flammable gas may be expected.

places where large amounts of oil mist exist.

●

Min. 10 in.

Front view

NOTE

direct sunlight.

●

The rear of the indoor unit can be installed flush

against the wall.

locations near heat sources which may affect the

performance of the unit.

Air

discharge

locations where external air may enter the room directly.

This may cause “sweating” on the air discharge ports,

causing them to spray or drip.

●

Air intake

Min. 2 ft.

locations where the remote controller will be splashed with

water or affected by dampness or humidity.

Side view

Max. 10 in.

Obstacle

installing the remote controller behind curtains or furniture.

locations where high-frequency emissions are generated.

●

Fig. 2-1

DO:

ConcealedDuct(High-StaticPressure)Type

4-Way Air Discharge Semi-Concealed Type

select an appropriate position from which every corner of

●

the room can be uniformly cooled.

3 ft.

select a location where the ceiling is strong enough to

support the weight of the unit.

3 ft.

select a location where tubing and drain pipe have the

shortest run to the outdoor unit.

3 ft.

allow room for operation and maintenance as well as

unrestricted air flow around the unit.

Fig. 2-2

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 1-9.

1-Way Air Discharge Semi-Concealed Type

Ceiling

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.

●

Min. 2 in.

Wall

Obstacle

NOTE

Air

discharge

Air delivery will be degraded if the distance from the floor to

the ceiling is greater than 10 ft.

Air

intake

Wall

Min. 2 in.

Side view

Fig. 2-3

Wall-MountedType

Min.6 in.

Min.

6 in.

Min.

6 in.

Front View

Fig. 2-4

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2-2. Outdoor Unit

Exhaust fan

Heat

AVOID:

Hot air

heat sources, exhaust fans, etc.

damp, humid or uneven locations

indoors (no-ventilation location)

●

source

Out-

door

unit

DO:

choose a place as cool as possible.

●

Fig. 2-5

choose a place that is well ventilated.

allow enough room around the unit for air intake/

exhaust and possible maintenance.

Example of installation of 2 units

(When wall height is below 6 ft.)

Installation Space

* More than 4 in.

Install the outdoor unit where there is enough space for ven-

tilation. Otherwise the unit may not operate properly. Fig. 2-6

shows the minimum space requirement around the outdoor

units when 3 sides are open and only 1 side is shuttered,

with open space above the unit. The mounting base should

be concrete or a similar material that allows for adequate

drainage. Make provisions for anchor bolts, platform height,

and other site-specific installation requirements.

* More than 4 in.

More than

2 in.

More than

1.7 ft.

* More than 4 in.

Leave space open above the

unit.

●

CAUTION

* However, be sure to ensure a space of 1 ft. or more at

either the right side or the rear of the unit.

Construct louvers or other

openings in the wall, if nec-

essary, to ensure adequate

ventilation.

●

Fig. 2-6

NOTE

3-15/16

74-1/64 (Ceiling panel dimensions)

Do not do any wiring or tubing within 1 ft. of the front

panel, because this space is needed as a servicing

space for the compressor.

●

35-3/64 (Ceiling panel dimensions)

Ensure a base height of 4 in. or more to ensure that

drainage water does not accumulate and freeze

around the bottom of the unit.

If installing a drain pan, install the drain pan prior to

installing the outdoor unit.

* Make sure there is at least 6 in. between the outdoor

unit and the ground.

31-7/64 (Installation hole pitch)

7-7/8

Also, the direction of the tubing and electrical wiring

should be from the front of the outdoor unit.

70-5/64 (Installation hole pitch)

Unit: in.

Top view

Fig. 2-7

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2-3. Precautions When Installing in Heavy Snow

Areas

AVOID

a) The platform should be higher than the maximum snow

depth. (Fig. 2-8)

b) 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 the outdoor unit.

Without snow-

proof ducting

(Without platform)

c) The platform foundation must be solid and the unit must

be secured with anchor bolts.

d) When installing on a roof subject to strong wind, coun-

termeasures must be taken to prevent the unit from

being overturned.

Fig. 2-8

Fig. 2-9

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2-4. Dimensions of Wind Ducting

Reference diagram for air-discharge chamber (field supply)

unit: in.

Ceiling panel

33-3/16

Air direction: Front direction

Air direction: Right direction

35-3/64

(Ceiling panel dimensions)

35-15/64

(Maximum bracket dimensions)

35-3/64

(Ceiling panel dimensions)

2-11/64

15/16

2-11/64

Front view

Right side view

Front view

Right side view

Note: Can be installed so that the air direction is to the front, right, left or rear direction.

2-unit installation

74-7/32 (2-unit installation: maximum dimensions)

5-25/32

33-3/16

31-7/64

Top view

31-7/64

(Installation hole pitch)

unit: in.

35-3/64

(Ceiling panel dimensions)

2-11/64

15/16

7-7/8

Front view

Right side view

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2-5. Dimensions of Snow Ducting

Reference diagram for snow-proof ducting (field supply)

31-17/32

Air direction:

Front direction

Air direction:

Right direction

Ceiling panel

31-17/32

53-55/64

31-17/32 (Air intake duct)

33-3/16 (Air outlet duct)

9-13/32

35-3/64

(Ceiling panel dimensions)

53-55/64

9-13/32

unit: in.

35-3/64

(Ceiling panel dimensions)

32-7/8

15/16

1 pc.

4 pc.

Front view

Right side view

Front view

Right side view

Note: Can be installed so that the air direction is to the front, right, left or rear direction.

74-1/64 (Ceiling panel dimensions)

Ceiling panel dimensions

35-3/64

3-15/16

2-unit installation

Top (Before installation of snowfall protection duct)

31-7/64

7-7/8

31-7/64

70-5/64

Installation hole pitch

unit: in.

35-3/64

(Ceiling panel dimensions)

Ceiling panel

9-29/64

2-11/64

9-29/64

7/8

92-53/64

Front view

Right side view

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3. HOW TO INSTALL THE INDOOR UNIT

4-Way Air Discharge Semi-Concealed Type (X Type)

■

Note: For DC Fan Tap Change Procedure

for 4-Way Cassette, see page 34.

3-1. Preparation for Suspending

This unit uses a drain pump. Use a carpenter’s level to check that the

unit is level.

Hole-in-anchor

Hole-in-plug

Concrete

Insert

3-2. Suspending the Indoor Unit

(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)

(2) Follow Fig. 3-2 and Table 3-1 to make the holes in the ceiling.

Fig. 3-1

Unit: in. (mm)

Table 3-1

Length

Type

31-1/32 28-15/32 34-27/32 34-27/32

(788) (723) (885) (885)

12, 18, 24, 36

(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, unit, and panel.

Unit: in. (mm)

Table 3-2

A (suspension bolt pitch)

Length

Type

C (ceiling opening dimension)

4-29/64

(113)

6-13/16

(173)

10-5/64

(256)

8-17/64

(210)

3-15/32

(88)

12, 18, 24

Fig. 3-2

4-29/64

(113)

6-13/16

(173)

12-9/16

(319)

8-17/64

(210)

3-15/32

(88)

Drain outlet(other side)

(VP25)

Refregerant tubing joint(liquid side)

Refregerant tubing joint(gas side)

Suspension lug

Power supply outlet

Unit: in. (mm)

Inter-unit control wiring

Fig. 3-3

3-3. Placing the Unit Inside the Ceiling

(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)

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.

Full-scale installation diagram

(printed on top of container box)

Unit: in. (mm)

Supplied bolt

Fig. 3-4

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(2) The length of suspension bolts must be appropriate

for a distance between the bottom of the bolt and the

bottom of the unit of more than 19/32 in. as shown in

Fig. 3-5.

Suspension bolt

Suspension lug

Nuts and washers

(use for upper and lower)

(3) Thread the 3 hexagonal nuts and 2 washers (field

supply) onto each of the 4 suspension bolts as shown

in Fig. 3-5. Use 1 nut and 1 washer for the upper side,

and 2 nuts and 1 washer for the lower side, so that the

unit will not fall off the suspension lugs.

Notch

Double nut

15/32 – 43/64 (12 – 17)

(4) Adjust so that the distance between the unit and the

ceiling bottom is 15/32 to 43/64 in. Tighten the nuts on

the upper side and lower side of the suspension lug.

Unit: in. (mm)

Fig. 3-5

(5) Remove the protective polyethylene used to protect

the fan parts during transport.

Hard PVC

socket

VP-25

(Field supply)

Hard PVC pipe

VP-25

(Field supply)

Hose band

Connection pipe

3-4. Installing the Drain Piping

Supplied

drain hose

(1) Prepare a standard hard PVC pipe (O.D. 1-1/4 in.) for

the drain and use the supplied drain hose and hose

band to prevent water leaks.

(drain port)

The PVC pipe must be purchased separately. The

unit’s transparent drain port allows you to check drain-

age. (Fig. 3-6)

PVC adhesive

Packing

(supplied)

Align the hose

band with the end

of the pipe

CAUTION

Bead

Fig. 3-6

●

Insert the drain pipe until it contacts the socket,

as shown in Fig. 3-6, then secure it tightly with the

hose band.

●

Do not use adhesive when connecting the supplied

Drain insulator (supplied)

hose.

Reasons: 1. It may cause water to leak from the

connection. Since the connection is

slippery just after the adhesive has been

applied, the pipe easily slips off.

2. The pipe cannot be removed when

maintenance is needed.

Fig. 3-7

●

Do not bend the supplied drain hose 90° or more.

The hose may slip off.

●

Align the hose bands with the end of the hose.

Air bleeder prohibited

Tighten the hose band firmly. Please make sure

that the bead is not covered by the hose band.

(Fig. 3-6)

Tighten the hose clamps so

CAUTION

Fig. 3-8

their locking nuts face upward.

(Fig. 3-6)

(2) After checking the drainage, wrap the supplied packing

and drain pipe insulator around the pipe. (Fig. 3-7)

●

Do not install an air bleeder

as this may cause water to

spray from the drain pipe

outlet. (Fig. 3-8)

NOTE

CAUTION

Make sure the drain pipe has a downward gradient (1/100

or more) and that there are no water traps.

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CAUTION

11-3/16 in. or less (as short as possible)

33-15/32 in. or less

●

In cases where it is necessary to raise the height

of the drain piping, the drain piping can be raised

to a maximum height of 33-15/32" above the

bottom surface of the ceiling. Under no

conditions attempt to raise it higher than

33-15/32" above the bottom surface of the ceiling.

Doing so will result in water leakage. (Fig. 3-9)

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. 3-10)

0 – 45°

* Length of supplied drain hose = 9-27/32 in.

Fig. 3-9

●

Upward gradient prohibited

Do not apply force to the piping on the unit side

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

●

Provide insulation for any pipes that are run

indoors.

Support

pieces

3-5. Checking the Drainage

Fig. 3-11

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.

Drainage check

(1) Connect power to the power terminal board (R, S

terminals) inside the electrical component box.

(2) Slowly pour approx. 0.3 gal of water into the drain

pan to check drainage. (Fig. 3-12)

(3) Short the check pin (CHK) on the indoor control

board and operate the drain pump. Check the water

flow through the transparent drain pipe and see if

there is any leakage.

Drain pan outlet

Water (Approx. 0.3 gal)

Plastic container

for water intake

(4) When the check of drainage is complete, open the

check pin (CHK) and remount the tube cover.

Fig. 3-12

Be careful since the fan will

start when you short the pin

on the indoor control board.

CAUTION

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3-6. How to Install the Ceiling Panel

must be within the range of 15/32 – 43/64 in. (Fig. 3-13)

3-6-1. Before Installing the Ceiling Panel

Checking the unit position

If not within this range, malfunction or other trouble may occur.

(1) Check that the ceiling hole is within this range:

Main unit

33-55/64 33-55/64 to 35-53/64 35-53/64 in.

(2) Use the full-scale installation diagram (from the

packaging) that was supplied with the unit to

determine the positioning of the unit on the ceiling

surface. If the positions of the ceiling surface and

unit do not match, air leakage, water leakage, flap

operation failure, or other problems may occur.

Ceiling opening

dimension

Ceiling side

Fig. 3-13

Flap

CAUTION

●

Never place the panel face-down. Either hang

it vertically or place it on top of a projecting

object. Placing it face-down will damage the

surface.

●

Do not touch the flap or apply force to it.

(This may cause flap malfunction.)

Fig. 3-14

Remove the air-intake grille and air filter from the

ceiling panel. (Figs. 3-15, 3-16 and 3-17)

Screw

Latch

a) Remove the 2 screws on the latch of the air-intake

grille. (Fig. 3-15)

b) Slide the air-intake grille catches in the direction

shown by the arrows

(Fig. 3-16)

to open the grille.

c) With the air-intake grille opened, remove the grille

hinge from the ceiling panel by sliding it in the direc-

Fig. 3-15

tion shown by the arrow

. (Fig. 3-17)

Air-intake grille

Ceiling panel

Removing the corner cover

a) Slide the corner cover to the direction shown

by the arrow

(Fig. 3-18).

to remove the corner cover.

Air-intake grille hinge

Fig. 3-16

Fig. 3-17

Ceiling panel

Corner cover

Push

Strap

Corner cover

Fig. 3-18

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Inter-unit control wiring

3-6-2. Installing the Ceiling Panel

After completing the wiring process, install the

supplied wiring cover before installing the panel.

It is not possible to install the wiring cover after install-

ing the panel.

The power must be turned ON in order to change the

flap angle. (Do not attempt to move the flap by hand.

Doing so may damage the flap.)

Screw (supplied)

Wiring cover (supplied)

Power supply outlet

M4-8 or 5/32" – 5/16"

(1) Insert the temporary fasteners (stainless steel) on

the inside of the ceiling panel into the square holes

on the unit to temporarily fasten the ceiling panel in

place. (Fig. 3-20-1)

Fig. 3-19-1

Fig. 3-19-2

Square hole in unit

●

The ceiling panel must be installed in the correct

direction relative to the unit. Align the REF. PIPE

and DRAIN marks on the ceiling panel corner with

the correct positions on the unit.

Push when

you remove

Temporary

fastener

Temporary

fastener

●

To remove the ceiling panel, support the ceiling

panel while pressing the temporary fasteners toward

the outside. (Fig. 3-20-1)

Fig. 3-20-1

Drain tubing corner

Refrigerant tubing

corner

(2) Align the panel installation holes and the unit screw

holes.

(3) Tighten the supplied washer head screws at the

4 panel installation locations so that the panel is

attached tightly to the unit. (Fig. 3-20-2)

After completing the

wiring process, install

the supplied wiring cover

before installing the panel.

It is not possible to install

the wiring cover after

installing the panel.

(4) Check that the panel is attached tightly to the

ceiling.

Ceiling panel

DRAIN mark

●

At this time, make sure that there are no gaps

between the unit and the ceiling panel, or between

the ceiling panel and the ceiling surface. (Fig. 3-21)

●

If there is a gap between the panel and the ceil-

ing, leave the ceiling panel attached and make fine

adjustments to the installation height of the unit to

eliminate the gap with the ceiling. (Fig. 3-21)

Panel installation hole

(4 locations)

REF. PIPE

mark

Washer head

screws

Fig. 3-20-2

Insert a wrench

or other tool into

the corner cover

installation hole

and make fine

adjustments to

the unit nut.

Do not allow

gaps

Main unit

Ceiling panel

Ceiling surface

CAUTION

Fig. 3-21

Fig. 3-22

●

If a gap remains between the ceil-

●

The height of the unit can be adjusted from the

ceiling panel corner hole, with the ceiling panel

attached, to an extent that does not affect the

unit levelness, the drain hose, or other elements.

If the screws are not sufficiently tight-

ened, trouble such as that shown in

the figure below may occur. Be sure

to tighten the screws securely.

ing surface and the ceiling panel

even after the screws are tightened,

adjust the height of the unit again.

Air leakage

Air leakage from

ceiling surface

Staining

Adjust so that there are no gaps.

Condensation, water leakage

Fig. 3-23

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3-6-3. Wiring the Ceiling Panel

(Direction that the unit faces has been changed to

facilitate explanation.)

(1) Open the cover of the electrical component box.

Electrical component

box cover

(2) Connect the 7P wiring connector (red) from the

ceiling panel to the connector in the unit electrical

component box. (Fig. 3-24)

Ceiling panel

wiring connector

●

If the connectors are not connected, the Auto flap will

Screws

(3 locations)

not operate. Be sure to connect them securely.

Ceiling panel side

●

Check that the wiring connector is not caught

between the electrical component box and the cover.

●

Check that the wiring connector is not caught

Mains side

between the unit and the ceiling panel.

Clamp

* Pass the wiring connector through the clamp to fasten it in place,

as shown in the figure.

3-6-4. How to Attach the Corner & Air-Intake Grille

Attaching the corner cover and air-intake grille

Fig. 3-24

A. Attaching the corner cover

(1) Check that the safety cord from the corner cover is

fastened to the ceiling panel pin, as shown in the

figure. (Fig. 3-25)

(2) Use the supplied screws to attach the corner cover

to the ceiling panel. (Fig. 3-25)

B. Attaching the air-intake grille

Place the corner cover so that the 3 tabs

fit into the holes in the ceiling panel.

Then fasten it in place with the supplied screws.

●

To install the air-intake grille, follow the steps for

Removing the grille in the reverse order. By rotating

the air-intake grille, it is possible to attach the grille

onto the ceiling panel from any of 4 directions.

Coordinate the directions of the air-intake grilles when

installing multiple units, and change the directions

according to customer requests. (Fig. 3-26)

Fig. 3-25

Hole for ceiling panel hook

●

When attaching the air-intake grille, be careful

that the flap lead wire does not become caught.

●

Be sure to attach the safety cord that prevents

the air-intake grille from dropping off to the

ceiling panel unit as shown in the figure at right.

●

With this ceiling panel, the directions of the air-intake

Hook that prevents

grille lattices when installing multiple units, and the

position of the label showing the company name on

the corner panel, can be changed according to

customer requests, as shown in the figure below.

However, the optional wireless receiver kit can only

be installed at the refrigerant-tubing corner of the

ceiling unit. (Fig. 3-27)

the grille from dropping

Fig. 3-26

Locations of the air-intake grille catches at

the time the product is shipped.

* The grille can be installed with these

catches facing in any of 4 directions.

Unit drain hose side

Unit refrigerant tube side

Optional wireless receiver kit

* Can only be installed

in this position.

Can be installed rotated 90˚

Unit electrical component box

Fig. 3-27

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3-6-5. Checking After Installation

●

Check that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceiling

surface. Gaps may cause water leakage and condensation.

●

Check that the wiring is securely connected.

If it is not securely connected, the auto flap will not operate. (“P09” is displayed on the remote controller.) In addition,

water leakage and condensation may occur.

3-6-6. 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 connec-

tor inside the electrical component box, and then remove the 4 mounting screws.

3-6-7. Adjusting the Auto Flap

The air-direction louver on the ceiling panel outlet can be adjusted as follows.

●

Adjust the louver to the desired angle using the remote controller. The louver also has an automatic air-sweeping

mechanism.

NOTE

●

Never attempt to move the louver by hand.

●

Proper air flow depends on the location of the air conditioner, the layout of the room and furniture, etc. If cooling or

heating seems inadequate, try changing the direction of the air flow.

3-7. Special Remarks

DC Fan Tap Change Procedure

Be sure to turn OFF the power (at mains) before beginning the work below.

(1) In the table below, check the field-supply parts that will be used. (If this setting is not made, the airflow may

decrease and condensation may occur.)

Setting

Air shield material (for use with 3-direction discharge)*

(a)

Air shield material (for use when a discharge duct is connected)*

Air shield material (for use with 2-direction discharge)*

(b)

* Use field-supply air shield material.

Setting (a): Go to (2).

Setting (b): Go to (3).

(2) Setting (a)

Indoor unit control PCB

Open the cover of the electrical component box.

Short the short-circuit pin TP3 (2P, yellow) on the

indoor unit control PCB. (Fig. 3-28)

* PCB model No.: CR-SXRP56B-B

(3) Setting (b)

Open the cover of the electrical component box.

Short the short-circuit pin TP6 (2P, white) on the

indoor unit control PCB. (Fig. 3-28)

Fig. 3-28

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■ 4-Way Air Discharge Semi-Concealed Type (XM

Type)

Hole-in-anchor

Hole-in-plug

Concrete

Insert

3-8. Preparation for Suspending

This unit uses a drain pump. Use a carpenter’s level to check

that the unit is level.

3-9. Suspending the Indoor Unit

(1) Fix the suspension bolts securely in the ceiling using

the method shown in the diagrams, by attaching

them to the ceiling support structure, or by any other

method that ensures that the unit will be securely

and safely suspended. (Fig. 3-29)

Suspension bolt (M10 or 3/8")

(field supply)

Fig. 3-29

23-5/8"

Ceiling opening dimensions

21-1/32" Suspension bolt pitch

(2) Follow the diagram to make the holes in the ceiling.

(3) Determine the pitch of the suspension bolts using

the supplied full-scale installation diagram. The dia-

gram shows the relationship between the positions

of the suspension fitting, unit, and panel. (Fig. 3-30)

Drain tube

22-41/64"

connection port

(outer dia ø1-1/32")

2-3/32" 6-19/64" 6-11/16"

3-10. Placing the Unit Inside the Ceiling

(1) When placing the unit inside the ceiling, determine

the pitch of the suspension bolts using the supplied

full-scale installation diagram. (Fig. 3-31)

Fig. 3-30

Power supply port

Refrigerant tubing joint

(liquid side)

ø1/4 (flared)

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.

(2) The length of suspension bolts must be appropriate

for a distance between the bottom of the bolt and the

bottom of the unit of more than 19/32" as shown in

the diagram. (Fig. 3-31)

(3) Thread the 3 hexagonal nuts and 2 washers (field

supply) onto each of the 4 suspension bolts as

shown in the diagram. Use 1 nut and 1 washer for

the upper side, and 2 nuts and 1 washer for the

lower side, so that the unit will not fall off the suspen-

sion lugs. (Fig. 3-32)

Full-scale installation diagram

(printed on top of container box)

Supplied bolt

Fig. 3-31

Suspension bolt

Suspension lug

Nuts and washers

(used for upper and lower)

(4) Adjust so that the distance between the unit and the

ceiling bottom is 33/64" to 45/64". Tighten the nuts

on the upper side and lower side of the suspension

lug. (Fig. 3-32)

Notch

Double nut

(5) Remove the protective polyethylene used to protect

the fan parts during transport.

33/64" – 45/64"

Fig. 3-32

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3-11. Installing the Drain Piping

(1) Prepare standard hard PVC pipe (O.D. 1-1/32") for

the drain and use the supplied hose band to prevent

water leaks. (Fig. 3-33)

Twist tie

(4 ties, supplied)

Hard PVC pipe

(equivalent to

O.D. 1-1/32")

(Field supply)

Drain hose

insulation

(supplied)

Position to

fasten hose

bands

Drain port

The PVC pipe must be purchased separately.

The transparent drain part on the unit allows you to

check drainage.

(2) Installing the drain hose

To install the drain hose, first place 1 of the 2 hose bands

over the unit drain port and the other hose band over the

hard PVC pipe (not supplied). Then connect both ends of

the supplied drain hose. (Fig. 3-33)

●

Drain hose

(supplied)

13/64"

63/64"

On the unit drain side, grasp the hose band with pliers and

insert the drain hose all the way to the base.

If other commercially available hose bands are used, the

drain hose may become pinched or wrinkled and there is

danger of water leakage. Therefore be sure to use the sup-

plied hose bands. When sliding the hose bands, be careful

to avoid scratching the drain hose.

Do not use adhesive when connecting the supplied drain

hose to the drain port (either on the main unit or the PVC

pipe).

●

5-33/64"

140

Hose band

(2 bands, supplied)

Unit

Fig. 3-33

Attach so that the hose band

fastener is on the side of the

drain port.

●

CAUTION

●

Attach the hose bands so that

each is approximately 13/64"

to 63/64" from the end of the

supplied drain hose.

Reasons: 1. It may cause water to leak from the connec-

tion. Since the connection is slippery just

after the adhesive has been applied, the pipe

easily slips off.

Air bleeder prohibited

2. The pipe cannot be removed when mainte-

nance is needed.

Wrap the hose with the supplied drain hose insulation and

use the 4 twist ties so that the hose is insulated with no

gaps.

Do not bend the supplied drain hose 90° or more. The hose

may slip off.

●

Do not install an air bleeder as

●

this may cause water to spray

from the drain pipe outlet.

CAUTION

NOTE

Make sure the drain pipe has a downward gradient (1/100 or

more) and that there are no water traps.

CAUTION

1 ft. or less

2.78 ft. or less

In cases where it is necessary to raise the height of the

drain piping, the drain piping can be raised to a maxi-

mum height of 2.78 ft. above the bottom surface of the

ceiling. Under no conditions attempt to raise it higher

than 2.78 ft. above the bottom surface of the ceiling.

Doing so will result in water leakage. (Fig. 3-34)

Do not use natural drainage.

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. 3-35)

●

Fig. 3-34

Fig. 3-35

* Length of supplied drain hose = 5-33/64"

Uphill slope

●

Do not apply force to the piping on the unit side 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 sup-

port as close to the unit as possible. (Fig. 3-36)

Provide insulation for any pipes that are run indoors.

●

Support

bracket

Fig. 3-36

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