Bryant Legacy Air Conditoner H3A User Manual

113A, 114A, 116B  
Legacyt RNC Line Air Conditioners  
with Puronr Refrigerant  
1--1/2 To 5 Nominal Tons  
Installation Instructions  
5. When passing refrigerant tubes through the wall, seal open-  
SAFETY CONSIDERATIONS  
ing with RTV or other pliable silicon--based caulk. (See Fig.  
1.)  
Improper installation, adjustment, alteration, service, maintenance,  
or use can cause explosion, fire, electrical shock, or other  
conditions which may cause death, personal injury, or property  
damage. Consult a qualified installer, service agency, or your  
distributor or branch for information or assistance. The qualified  
installer or agency must use factory--authorized kits or accessories  
when modifying this product. Refer to the individual instructions  
packaged with the kits or accessories when installing.  
6. Avoid direct tubing contact with water pipes, duct work,  
floor joists, wall studs, floors, and walls.  
7. Do not suspend refrigerant tubing from joists and studs with  
a rigid wire or strap which comes in direct contact with  
tubing.(See Fig. 1.)  
8. Ensure that tubing insulation is pliable and completely sur-  
rounds vapor tube.  
9. When necessary, use hanger straps which are 1 in. (25.4  
mm) wide and conform to shape of tubing insulation. (See  
Fig. 1.)  
Follow all safety codes. Wear safety glasses, protective clothing,  
and work gloves. Use quenching cloth for brazing operations.  
Have fire extinguisher available. Read these instructions  
thoroughly and follow all warnings or cautions included in  
literature and attached to the unit. Consult local building codes and  
current editions of the National Electrical Code ( NEC ) NFPA 70.  
In Canada, refer to current editions of the Canadian electrical code  
CSA 22.1.  
10. Isolate hanger straps from insulation by using metal sleeves  
bent to conform to shape of insulation.  
NOTE: Avoid contact between tubing and structure  
OUTDOOR WALL  
INDOOR WALL  
!
Recognize safety information. This is the safety--alert symbol  
CAULK  
LIQUID TUBE  
When you see this symbol on the unit and in instructions or  
manuals, be alert to the potential for personal injury. Understand  
these signal words; DANGER, WARNING, and CAUTION. These  
words are used with the safety--alert symbol. DANGER identifies  
the most serious hazards which will result in severe personal injury  
or death. WARNING signifies hazards which could result in  
personal injury or death. CAUTION is used to identify unsafe  
practices which would result in minor personal injury or product  
and property damage. NOTE is used to highlight suggestions  
which will result in enhanced installation, reliability, or operation.  
VAPOR TUBE  
JOIST  
INSULATION  
THROUGH THE WALL  
HANGER STRAP  
(AROUND VAPOR  
TUBE ONLY)  
INSULATION  
VAPOR TUBE  
!
WARNING  
1” (25.4 mm) MIN.  
ELECTRICAL SHOCK HAZARD  
LIQUID TUBE  
SUSPENSION  
Failure to follow this warning could result in personal  
injury or death.  
A94026  
Before installing, modifying, or servicing system, main  
electrical disconnect switch must be in the OFF position.  
There may be more than 1 disconnect switch. Lock out and  
tag switch with a suitable warning label.  
Fig. 1 -- Piping Installation  
The outdoor unit contains system refrigerant charge for operation  
with AHRI rated indoor unit when connected by 15 ft. (4.57 m) of  
field--supplied or factory accessory tubing. For proper unit  
operation, check refrigerant charge using charging information  
located on control box cover and/or in the Check Charge section of  
this instruction.  
INSTALLATION INSTRUCTIONS  
NOTE: In some cases noise in the living area has been traced to  
gas pulsations from improper installation of equipment.  
IMPORTANT: Maximum liquid--line size is 3/8--in. OD for all  
residential applications including long line.  
1. Locate unit away from windows, patios, decks, etc. where  
unit operation sound may disturb customer.  
2. Ensure that vapor and liquid tube diameters are appropriate  
for unit capacity.  
3. Run refrigerant tubes as directly as possible by avoiding un-  
necessary turns and bends.  
IMPORTANT: Always install the factory--supplied liquid--line  
filter drier. If replacing the filter drier, refer to Product Data Digest  
for appropriate part number. Obtain replacement filter driers from  
your distributor or branch.  
4. Leave some slack between structure and unit to absorb vi-  
bration.  
Refer to Fig. 3 and install filter drier as follows:  
1. Braze 5--in. liquid tube to the indoor coil.  
2. Wrap filter drier with damp cloth.  
Sweat Connection  
!
CAUTION  
3. Braze filter drier to above 5--in. (127 mm) liquid tube.  
Flow arrow must point towards indoor coil.  
UNIT DAMAGE HAZARD  
Failure to follow this caution may result in equipment  
damage or improper operation.  
4. Connect and braze liquid refrigerant tube to the filter drier.  
Service valves must be wrapped in a heat--sinking material  
such as a wet cloth while brazing.  
Use refrigeration grade tubing. Service valves are closed from  
factory and ready for brazing. After wrapping service valve with a  
wet cloth, braze sweat connections using industry accepted  
methods and materials. Consult local code requirements.  
Refrigerant tubing and indoor coil are now ready for leak testing.  
This check should include all field and factory joints.  
A05178  
Fig. 3 -- Liquid Line Filter Drier  
Table 1 – Refrigerant Connections and Recommended Liquid  
Evacuate Refrigerant Tubing and Indoor Coil  
and Vapor Tube Diameters (In.)  
113A  
LIQUID  
RATED VAPOR*  
!
CAUTION  
Connection  
& Max. Tube  
Diameter  
UNIT SIZE (SERIES)  
Connection  
Tube  
Diameter  
Diameter  
UNIT DAMAGE HAZARD  
018, 024 (Series C)  
018, 024 (Series D)  
030  
036 (Series D)  
036 (Series E)  
042, 048  
3/8  
3/8  
3/8  
3/8  
3/8  
3/8  
3/8  
5/8  
3/4  
3/4  
3/4  
7/8  
7/8  
7/8  
5/8  
3/4  
3/4  
3/4  
7/8  
Failure to follow this caution may result in equipment  
damage or improper operation.  
Never use the system compressor as a vacuum pump.  
Refrigerant tubes and indoor coil should be evacuated using the  
recommended deep vacuum method of 500 microns. The alternate  
triple evacuation method may be used (see triple evacuation  
procedure in service manual). Always break a vacuum with dry  
nitrogen.  
7/8  
1 --- 1/8  
060  
114A  
LIQUID  
Connection  
& Max. Tube  
Diameter  
RATED VAPOR*  
UNIT SIZE  
Connection  
Diameter  
Tube  
Deep Vacuum Method  
Diameter  
The deep vacuum method requires a vacuum pump capable of  
pulling a vacuum of 500 microns and a vacuum gage capable of  
accurately measuring this vacuum depth. The deep vacuum method  
is the most positive way of assuring a system is free of air and  
liquid water. A tight dry system will hold a vacuum of 1000  
microns after approximately 7 minutes. See Fig. 4.  
018, 024  
030, 036  
042, 048, 049  
060, 061  
3/8  
3/8  
3/8  
3/8  
5/8  
3/4  
7/8  
7/8  
5/8  
3/4  
7/8  
1 --- 1/8  
116B  
LIQUID  
Connection  
& Max. Tube  
Diameter  
RATED VAPOR*  
UNIT SIZE  
Connection  
Diameter  
Tube  
Diameter  
5000  
4500  
4000  
018, 024  
030  
036  
042, 048  
060  
3/8  
3/8  
3/8  
3/8  
3/8  
3/4  
3/4  
7/8  
7/8  
7/8  
3/4  
3/4  
7/8  
7/8  
1 --- 1/8  
LEAK IN  
SYSTEM  
3500  
3000  
2500  
2000  
*
Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for  
performance data when using different size and length linesets.  
Notes:  
1. Do not apply capillary tube or fixed orifice indoor coils to these units.  
VACUUM TIGHT  
1500  
2. For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m)  
horizontal or 35 ft. (10.7 m) vertical differential 250 ft. (76.2 m) Total  
Equivalent Length), refer to the Residential Piping and Longline Guide  
line--- Air Conditioners and Heat Pumps using Puron refrigerant.  
3. For alternate liquid line options on 018 --- 042 size units, see Product  
Data or Residential Piping and Application Guideline  
TOO WET  
1000  
TIGHT  
DRY SYSTEM  
500  
A95424  
0
1
2
3
4
5
6
7
Install Liquid-Line Filter Drier Indoor  
MINUTES  
A95424  
Fig. 4 -- Deep Vacuum Graph  
!
CAUTION  
Final Tubing Check  
UNIT DAMAGE HAZARD  
IMPORTANT: Check to be certain factory tubing on both indoor  
and outdoor unit has not shifted during shipment. Ensure tubes are  
not rubbing against each other or any sheet metal or wires. Pay  
close attention to feeder tubes, making sure wire ties on feeder  
tubes are secure and tight.  
Failure to follow this caution may result in equipment  
damage or improper operation.  
1. Installation of filter drier in liquid line is required.  
2. Filter drier must be wrapped in a heat--sinking material  
such as a wet cloth while brazing.  
3
Table 2 – Accessory Usage  
REQUIRED FOR  
SEA COAST  
REQUIRED FOR LOW---AMBIENT  
COOLING APPLICATIONS  
(Below 55°F/12.8_C)  
REQUIRED FOR LONG LINE  
APPLICATIONS*  
ACCESSORY  
APPLICATIONS  
(Within 2 miles/3.22 km)  
Ball Bearing Fan Motor  
Compressor Start Assist Capacitor and Relay  
Crankcase Heater  
Yes{  
Yes  
Yes  
Yes  
Yes  
No  
Yes  
No  
Yes  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
No  
No  
No  
Yes  
No  
Evaporator Freeze Thermostat  
H a r d S h u t --- O f f T X V  
Liquid Line Solenoid Valve  
®
Motor Master or Low---ambient Pressure Switch  
No  
Recommended  
No  
Support Feet  
Winter Start Control  
Recommended  
Yes  
* For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 35 ft. (10.7 m) vertical differential, refer to Residential Split---System Longline  
Application Guideline.  
{ Additional requirement for Low---Ambient Controller (full modulation feature) MotorMasterr Control.  
Use No. 18 AWG color--coded, insulated (35_C minimum) wire. If  
thermostat is located more than 100 ft. (30.48 m) from unit, as  
measured along the control voltage wires, use No. 16 AWG  
color--coded wire to avoid excessive voltage drop.  
All wiring must be NEC Class 1 and must be separated from  
incoming power leads.  
Make Electrical Connections  
Be sure field wiring complies with local and national fire, safety,  
and electrical codes, and voltage to system is within limits shown  
on unit rating plate. Contact local power company for correction of  
improper voltage. See unit rating plate for recommended circuit  
protection device.  
Use furnace transformer, fan coil transformer, or accessory  
transformer for control power, 24v/40va minimum.  
NOTE: Operation of unit on improper line voltage constitutes  
abuse and could affect unit reliability. See unit rating plate. Do not  
install unit in system where voltage may fluctuate above or below  
permissible limits.  
NOTE: Use of available 24v accessories may exceed the  
minimum 40va power requirement. Determine total transformer  
loading and increase the transformer capacity or split the load with  
an accessory transformer as required.  
NOTE: Use copper wire only between disconnect switch and unit.  
NOTE: Install branch circuit disconnect of adequate size per NEC  
to handle unit starting current. Locate disconnect within sight from  
and readily accessible from unit, per Section 440--14 of NEC.  
Final Wiring Check  
IMPORTANT: Check factory wiring and field wire connections  
to ensure terminations are secured properly. Check wire routing to  
ensure wires are not in contact with tubing, sheet metal, etc.  
Route Ground and Power Wires  
Remove access panel to gain access to unit wiring. Extend wires  
from disconnect through power wiring hole provided and into unit  
control box.  
Compressor Crankcase Heater  
When equipped with a crankcase heater, furnish power to heater a  
minimum of 24 hr before starting unit. To furnish power to heater  
only, set thermostat to OFF and close electrical disconnect to  
outdoor unit.  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
A crankcase heater is required if refrigerant tubing is longer than  
80 ft. (24.38 m). Refer to the Application Guideline and Service  
Manual Longline Section--Residential Split--System Air  
Conditioners and Heat Pumps.  
Failure to follow this warning could result in personal injury or  
death.  
The unit cabinet must have an uninterrupted or unbroken  
ground to minimize personal injury if an electrical fault should  
occur. The ground may consist of electrical wire or metal  
conduit when installed in accordance with existing electrical  
codes.  
Install Electrical Accessories  
Refer to the individual instructions packaged with kits or  
accessories when installing.  
Start--Up  
Connect Ground and Power Wires  
Connect ground wire to ground connection in control box for  
safety. Connect power wiring to contactor as shown in Fig. 5.  
!
CAUTION  
UNIT OPERATION AND SAFETY HAZARD  
DISCONNECT  
PER N.E.C. AND/OR  
LOCAL CODES  
Failure to follow this caution may result in personal injury,  
equipment damage or improper operation.  
CONTACTOR  
S Do not overcharge system with refrigerant.  
S Do not operate unit in a vacuum or at negative pressure.  
S Compressor dome temperatures may be hot.  
FIELD POWER  
WIRING  
BLUE  
3 PHASE ONLY  
FIELD GROUND  
WIRING  
!
CAUTION  
GROUND  
LUG  
A94025  
PERSONAL INJURY HAZARD  
Fig. 5 -- Line Connections  
Failure to follow this caution may result in personal injury.  
Connect Control Wiring  
Wear safety glasses, protective clothing, and gloves when  
handling refrigerant and observe the following:  
S Front seating service valves are equipped with Schrader  
Route 24--v control wires through control wiring grommet and  
connect leads to control wiring (See Fig. 7). Refer to Installation  
Instructions packaged with thermostat.  
valves.  
4
compressor circuit. R--G energizes indoor unit blower relay,  
starting indoor blower motor on high speed.  
When thermostat is satisfied, its contacts open, de--energizing  
contactor and blower relay. Compressor and motors stop.  
If indoor unit is equipped with a time--delay relay circuit, the  
indoor blower will run an additional 90 seconds to increase system  
efficiency.  
Follow these steps to properly start up system:  
1. After system is evacuated, fully open liquid and vapor ser-  
vice valves.  
2. Unit is shipped with valve stem(s) front seated (closed) and  
caps installed. Replace stem caps after system is opened to  
refrigerant flow. Replace caps finger--tight and tighten with  
wrench an additional 1/12 turn.  
Check Charge  
3. Close electrical disconnects to energize system.  
4. Set room thermostat at desired temperature. Be sure set  
point is below indoor ambient temperature.  
5. Set room thermostat to COOL and fan control to ON or  
AUTO mode, as desired. Operate unit for 15 minutes.  
Check system refrigerant charge.  
Factory charge amount and desired subcooling are shown on unit  
rating plate. Charging method is shown on information plate inside  
unit. To properly check or adjust charge, conditions must be  
favorable for subcooling charging. Favorable conditions exist  
when the outdoor temperature is between 70_F and 100_F  
(21.11_C and 37.78_C), and the indoor temperature is between  
70_F and 80_F (21.11_C and 26.67_C). Follow the procedure  
below:  
3-Phase Monitor  
In 3--phase units a small circuit board is factory installed to monitor  
line voltage. A small led will flash if a phase problem exists. See  
code descriptions on monitor. If LED is flashing, disconnect  
power to unit and interchange 2 field--wiring leads on unit  
contactor.  
Unit is factory charged for 15ft (4.57 m) of lineset. Adjust charge  
by adding or removing 0.6 oz/ft of 3/8 liquid line above or below  
15ft (4.57 m) respectively.  
For standard refrigerant line lengths (80 ft/24.38 m or less), allow  
system to operate in cooling mode at least 15 minutes. If conditions  
are favorable, check system charge by subcooling method. If any  
adjustment is necessary, adjust charge slowly and allow system to  
operate for 15 minutes to stabilize before declaring a properly  
charged system.  
If the indoor temperature is above 80_F (26.67_C), and the  
outdoor temperature is in the favorable range, adjust system charge  
by weight based on line length and allow the indoor temperature to  
drop to 80_F (26.67_C) before attempting to check system charge  
by subcooling method as described above.  
If the indoor temperature is below 70_F (21.11_C), or the outdoor  
temperature is not in the favorable range, adjust charge for line set  
length above or below 15ft (4.57 m) only. Charge level should then  
be appropriate for the system to achieve rated capacity. The charge  
level could then be checked at another time when the both indoor  
and outdoor temperatures are in a more favorable range.  
A00010  
Fig. 6 -- 3--Phase Monitor Control  
(Applies to 3--Phase Units Only)  
NOTE: If line length is beyond 80 ft (24.38 m) or greater than 20  
ft (6.10 m) vertical separation, See Long Line Guideline for  
special charging requirements.  
Table 3 – Three--Phase Monitor LED Indicators  
LED  
OFF  
FLASHING  
ON  
STATUS  
No call for compressor operation  
Reversed phase  
Final Checks  
IMPORTANT: Before leaving job, be sure to do the following:  
Normal  
1. Ensure that all wiring is routed away from tubing and sheet  
metal edges to prevent rub--through or wire pinching.  
!
2. Ensure that all wiring and tubing is secure in unit before  
adding panels and covers. Securely fasten all panels and  
covers.  
CAUTION  
UNIT DAMAGE HAZARD  
3. Tighten service valve stem caps to 1/12--turn past finger  
tight.  
Failure to follow this caution may result in equipment  
damage or improper operation.  
4. Leave Owner’s Manual with owner. Explain system opera-  
tion and periodic maintenance requirements outlined in  
manual.  
5. Fill out Dealer Installation Checklist and place in customer  
file.  
Ensure compressor rotation is correct.  
S 3--phase scroll compressors are rotation sensitive.  
S A flash LED on phase monitor indicates reverse rotation.  
(See Table 3)  
This will not allow contractor to be energized.  
S Disconnect power to unit and interchange 2 field--wiring  
leads on unit contactor.  
CARE AND MAINTENANCE  
For continuing high performance and to minimize possible  
equipment failure, periodic maintenance must be performed on this  
equipment.  
Frequency of maintenance may vary depending upon geographic  
areas, such as coastal applications. See Owner’s Manual for  
information.  
Sequence of Operation  
Turn on power to indoor and outdoor units. Transformer is  
energized.  
On a call for cooling, thermostat makes circuits R--Y and R--G.  
Circuit R--Y energizes contactor, starting outdoor fan motor and  
5
A/C  
THERMOSTAT  
Typical  
FAN COIL  
AIR  
A/C  
THERMOSTAT  
Typical  
AIR  
CONDITIONER  
FURNACE CONDITIONER  
24 VAC HOT  
R
C
R
24 VAC HOT  
R
R
C
24 VAC COM  
C
24 VAC COM  
C
C
W/W1  
C
HEAT STAGE 1  
COOL STAGE 1  
INDOOR FAN  
W
Y
HEAT STAGE 1  
COOL STAGE 1  
INDOOR FAN  
W/W1  
Y/Y2  
G
W2  
Y/Y2  
G
G
G
A02326  
LEGEND  
24-V FACTORY WIRING  
24-V FIELD WIRING  
FIELD SPLICE CONNECTION  
CONTACTOR  
C
A97368  
Fig. 7 -- Generic Wiring Diagrams  
(See Thermostat Installation Instruction  
for specific unit combinations)  
PURONR (R--410A) REFRIGERANT QUICK REFERENCE GUIDE  
S Puron refrigerant operates at 50--70 percent higher pressures than R--22. Be sure that servicing equipment and replacement  
components are designed to operate with Puron refrigerant  
S Puron refrigerant cylinders are rose colored.  
S Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.  
S Puron refrigerant systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold hose  
when charging into suction line with compressor operating  
S Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low--side retard.  
S Use hoses with 700 psig service pressure rating.  
S Leak detectors should be designed to detect HFC refrigerant.  
S Puron refrigerant, as with other HFCs, is only compatible with POE oils.  
S Vacuum pumps will not remove moisture from oil.  
S Do not use liquid--line filter driers with rated working pressures less than 600 psig.  
S Do not leave Puron suction line filter driers in line longer than 72 hours.  
S Do not install a suction--line filter drier in liquid line.  
S POE oils absorb moisture rapidly. Do not expose oil to atmosphere.  
S POE oils may cause damage to certain plastics and roofing materials.  
S Wrap all filter driers and service valves with wet cloth when brazing.  
S A factory approved liquid--line filter drier is required on every unit.  
S Do NOT use an R--22 TXV.  
S If indoor unit is equipped with an R--22 TXV or piston metering device, it must be changed to a hard shutoff Puron TXV.  
S Never open system to atmosphere while it is under a vacuum.  
S When system must be opened for service, recover refrigerant, evacuate then break vacuum with dry nitrogen and replace filter driers.  
Evacuate to 500 microns prior to recharging.  
S Do not vent Puron refrigerant into the atmosphere.  
S Do not use capillary tube coils.  
S Observe all warnings, cautions, and bold text.  
S All indoor coils must be installed with a hard shutoff Puron TXV metering device.  
E2009 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231  
Printed in U.S.A.  
Edition Date: 06/09  
Catalog No. II113---116A--- 0 5  
Replaces: II113A---14A---04  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
6

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