Bryant 550A - Manuals - manualsarea.com

Page 2 - ALL 556A UNITS MUST BE INSTALLED WITH A; FK4 and FC4 fan coils are equipped with an R-22 TXV.

can be no deviation. Consult the Application Guideline andService Manual—Air Conditioners and Heat Pumps Using Pu-ron® Refrigerant to obtain required unit changes for specificapplications and for R-22 retrofit. I. CHECK EQUIPMENT AND JOB SITE A. UNPACK UNIT Move to final location. Remove carton taki...

Page 3 - Fig. 5—Position of Sensing Bulb

INSTALLING TXV IN PLACE OF PISTON 1. Pump system down to 2 psig and recover refrigerant. 2. Remove hex nut from piston body. Use backup wrench on fan coils. 3. Remove and discard factory-installed piston. Be sure teflon seal is in place. 4. Reinstall hex nut. Finger tighten nut plus 1/2 turn. NOTE: ...

Page 5 - CONNECTOR; MINUTES

2. Braze filter drier between connector tube and liquid tube to indoor coil. Flow arrow must point towards indoor coil. C. REFRIGERANT TUBING Connect vapor tube to fitting on outdoor unit vapor service valves.Connect liquid tube to filter drier. (See Fig. 6 and Table 1.) Userefrigerant grade tubing....

Page 7 - COOLING ONLY PROCEDURE; UNITS WITH COOLING MODE PURON® TXV; FINAL CHECKS

To calculate additional charge requried for a 25-ft line set: 25 ft - 15 ft = 10 ft X 0.6 oz/ft = 6 oz of additional charge. B. COOLING ONLY PROCEDURE UNITS WITH COOLING MODE PURON® TXV Units installed with cooling mode TXV require charging by thesubcooling method. 1. Operate unit a minimum of 10 mi...

Page 8 - TABLE 4—SUPERHEAT CHARGING

TABLE 3—REQUIRED LIQUID-LINE TEMPERATURE (°F) LIQUID PRESSURE AT SERVICE VALVE (PSIG) REQUIRED SUBCOOLING TEMPERATURE (°F) 8 10 12 14 16 18 189 58 56 54 52 50 48 195 60 58 56 54 52 50 202 62 60 58 56 54 52 208 64 62 60 58 56 54 215 66 64 62 60 58 56 222 68 66 64 62 60 58 229 70 68 66 64 62 60 236 72...

Page 9 - TABLE 5—REQUIRED SUCTION-LINE TEMPERATURE; SUPERHEAT

TABLE 5—REQUIRED SUCTION-LINE TEMPERATURE SUPERHEAT TEMP (°F) SUCTION PRESSURE AT SERVICE PORT (PSIG) 107.8 112.2 116.8 121.2 126.0 130.8 138.8 140.8 145.8 0 35 37 39 41 43 45 47 49 51 2 37 39 41 43 45 47 49 51 53 4 39 41 43 45 47 49 51 53 55 6 41 43 45 47 49 51 53 55 57 8 43 45 47 49 51 53 55 57 59...

Page 10 - PURON®—QUICK REFERENCE GUIDE

PURON®—QUICK REFERENCE GUIDE • Puron® refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement components aredesigned to operate with Puron®. • Puron® refrigerant cylinders are rose colored. • Recovery cylinder service pressure rating must be...

Page 12 - WIRING MUST CONFORM TO NEC OR LOCAL CODES.; LEGEND; FIELD SPLICE CONNECTION

24 VAC HOT R C W/W1 Y/Y2 G R DH W2 W1 Y/Y2 BRYANT NON-PROGRAMMABLE THERMOSTAT MODEL AC FK4C FAN COIL AIR CONDITIONER C INDOOR FAN HEAT STAGE 1 COOL STAGE 1 24 VAC COM Y1 C SEE NOTE 2 G O J2 JUMPER J1 JUMPER A97363 24 VAC HOT R W Y G R DH W1 W2 Y/ Y2 OTHER NON-PROGRAMMABLE AC THERMOSTAT FK4C FAN COIL...