Summary of the content on the page No. 1
127A
Legacyt Line Air Conditioner
with Puronr Refrigerant
1--1/2 To 5 Nominal Tons (Sizes 018 to 060)
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.
Improper installation, adjustment, alteration, service, maintenance,
1.)
or use can cause explosion, fire, electrical shock, or other
6. Avoid direct tubing contact with water pipes, duct work,
conditions which may cause deat
Summary of the content on the page No. 2
Make Piping Connections INSTALLATION Check Equipment and Job Site ! WARNING UNPACK UNIT Move to final location. Remove carton taking care not to damage PERSONAL INJURY AND ENVIRONMENTAL HAZARD unit. Inspect Equipment Failure to follow this warning could result in personal injury or death. File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner Relieve pressure and recover all refrigerant before system panel. It contains
Summary of the content on the page No. 3
Outdoor Unit Connected to Factory Approved Indoor Unit Outdoor unit contains correct system refrigerant charge for operation with factory approved ARI rated indoor unit when connected by 15 ft. (4.57 m) of field--supplied or factory--accessory tubing, and factory supplied filter drier. Check refrigerant charge for maximum efficiency. Refrigerant Tubing Connection Outdoor A05178 Connect vapor and liquid tubes to fittings on vapor and liquid Fig. 3 -- Liquid Line Filter Drier service valves (see T
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Table 2 – Accessory Usage REQUIREDFOR REQUIREDFORLONGLINE SEACOAST ACCESSORY APPLICATIONS* APPLICATIONS (Within2miles/3.22km) BallBearing FanMotor No No CompressorStartAssistCapacitorandRelay Yes No Crankcase Heater Yes No EvaporatorFreezeThermostat No No Hard Shut---Off TXV Yes Yes LiquidLineSolenoidValve No No ® MotorMaster orLow---ambientPressure Switch No No SupportFeet No Recommended WinterStartControl No No * For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 35 ft. (10
Summary of the content on the page No. 5
Airflow Selection for Variable Speed Furnaces SYSTEM FUNCTIONS AND SEQUENCE The variable speed furnaces provide blower operation to match the OF OPERATION capacities of the compressor during high and low stage cooling The 127A models utilize a 2-stage cooling indoor thermostat. With operation. The furnace control board allows the installing a call for first stage cooling, the outdoor fan and low-stage technician to select the proper airflows for each stage of cooling. compressor are energized. I
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Check Charge TROUBLESHOOTING The 127A units may be charged in high-- or low--stage compressor If the compressor fails to operate with a cooling call, the table operation. Factory charge amount and desired subcooling are below (Resistance table) can be used to verify if there is any shown on unit rating plate. Charging method is shown on damage to the compressor windings causing system malfunction. information plate inside unit. To properly check or adjust charge, conditions must be favorable for
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MAJOR COMPONENTS CARE AND MAINTENANCE For continuing high performance and to minimize possible 2--Stage Compressor equipment failure, periodic maintenance must be performed on this The 2--stage compressor contains motor windings that provide equipment. 2--pole (3500 RPM) operation. Frequency of maintenance may vary depending upon geographic Compressor Internal Relief areas, such as coastal applications. See Owner’s Manual for The compressor is protected by an internal pressure relief (IPR) infor
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TWO-STAGE Variable Speed Two-Stage THERMIDISTAT AIR CONDITIONER Air Conditioner Fan Coil Thermidistat O Y1 Y1 RVS/Heat Stage 2 O/W2/B W1 Heat Stage 1 W/W1 REMOVE J2 JUMPER FOR Compressor Low Y1 W2 HEAT STAGING Y2 Compressor High Y/Y2 Y/Y2 Fan G G 24VAC Hot Heating Rh R REMOVE J1 FOR 24VAC Hot Cooling Rc DEHUMIDIFY DH MODES Dry Contact 1 D1 C C Dry Contact 2 D2 24VAC Common C Humidify HUM Humidifier Solenoid Outdoor Air Temp OAT Valve Remote Room Sensor RRS Outdoor Sensor OAT/RRS Return SRTN
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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 w
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E2009 BryantHeating &Cooling SystemsD 7310 W. MorrisSt.D Indianapolis, IN 46231 Printed inU.S.A. EditionDate: 12/09 CatalogNo.II127A---01 Replaces:New Manufacturer reserves therighttodiscontinue,or changeatanytime,specifications or designs withoutnoticeandwithoutincurringobligations. 10 127A
