Carrier 50HQ User Manual

Number OneAirConditbningMakerCarrier Parkway • Syracuse NY 13221Sing le-Package Water-Source Heat PumpsINDEXPageSAFETY CONSIDERATIONS...

COMPRESSOR DISCHARGE PRESSURE®SERVICE PORT(PSIG)Fig. 18 — Heating Cycle Operation Check Chart (R-22) — 50HQ,VQ033COMPRESSOR DISCHARGE PRESSURE® SERVIC

8. Add charge by slowly opening Chargemaster valve. If necessary, reduee charge by bleeding at liquid line Schrader valve. Check outdoor a

Indoor Fan Wheel should be centered in housing.To adjust fan, loosen setscrew holding fan tomotor shaft. Adjust fan and retighten setscrew.50VQ INDOOR

TROUBLESHOOTING CHARTPROBLEMCAUSECORRECTIONENTIRE UNIT DOES NOT RUNBlown fuse Broken or loose wires Voltage supply lowTransformerTfiermostatReplace

TROUBLESHOOTING CHART (cont)PROBLEMCAUSECORRECTIONNOISY OPERATIONCompressorMake sure the compressor is not in direct contact with the base or sides of

f. 50HQ units include a susjjension package for ceiling installation. T^'atwliOT'ha'nging brackets, install 4 bolts (5/16 - 18

Table 2MODEL 50HQ ÒPÉR wt (ib) 'DIMENSIONS (ft-in )ABCDESUPPLY DUCT CONN (ft-in.) FGACCESSORY FILTER (1) Size (in.)^Includes 1-in accessory fil

Table 3 — Electrical DataFLA — Full Load Amps LRA — Locked Rotor Amps RLA — Rated Load AmpsUNIT MODEL 50HQ.VQV/PH/HZOPER/iVOLTMaxmNGAGEMinCOMPRELRAESS

WATER WATERI Supply Air ’ Return AirFig. 4 — Water Piping — 50VQBALANCING VALVES (2) WITH SHUTOFFmdrain drain conn fpt(BOTTOM OF UNIT)50HQ0I4,018,022

2. Splice yellow and black power leads from control box to yellow and red motor leads. (Yellow-to- yellow and black-to-red.)CONNECT CONTROL

mmeter or continuity tester. If necessary, refer to Carrier Standard Service Techniques Manual, Chapter 2, for complete instructions.HIGH-P

Table 4 — Service DataUNIT 50HQ.VQR-22 CHG (Ib-oz)* Refrig ControlTan 'Motor Rpm(3-speed)HEAT EXCHANGER WATER FLOW RATE (Gpm)014f-F0181 022...027

Fig. 12 — Heating Cycle Operation Check Chart (R-22) — 50HQ,VQ018Fig. 15 — Cooling Cycle Charging Chart (R-22) — 50HQ,VQ027Fig. 13 — Cooling Cycle Cha