Carrier PERFORMANCE 50VT-A User Manual

150VT---APerformancet 14 SEER Single ---Packaged Heat PumpSystem with Puron® (R---410A) RefrigerantSingle and Three Phase2 --- 5 N o m i n a l To n s

10Table 1 – Physical Data -- Unit 50VT --A50VT-A24 50VT-A30 50VT-A36 50VT-A42 50VT-A48 50VT-A60Unit Size 2 2.5 3 3.5 4 5Shipping Weight (lb)(kg)354161

11A11002Fig. 12 -- Connection Wiring Schematics 208/230--1 -- 6050VT--A

12A11001Fig. 12 Cont. -- Ladder Wiring Schematics 208/230-- 1--6050VT--A

13A11006Fig. 13 -- Connection Wiring Schematics -- 208/230--3--6050VT--A

14A11005Fig. 13 Cont. -- Ladder Wiring Schematics -- 208/230-- 3--6050VT--A

15A10195Fig. 14 -- Connection Wiring Diagram 460 --3--6050VT--A

16A10195Fig. 14 Cont. -- Ladder Wiring Diagram 460 --3--6050VT--A

17PRE--START-- UPFIRE, EXPLOSION, ELECTRICAL SHOCK ANDENVIRONMENTAL HAZARDFailure to follow this warning could result in personal injury,death or prop

18turning backwards, the dif ference between compressor suction anddischarge pressures may be near zero.Checking and Adjusting Refrigerant ChargeThe r

194. Remove the vinyl cap off of the desired speed tap wire(Refer to Table 3 for color coding) for the normal coolingfan speed and place desired speed

2Recognize safety information. This is the safety--alert symbol.When you see this symbol on the unit and in instructions or manu-als, be alert to the

20HIGH LOW COMQC5QC4QC3KZKL07 09 080L0ALOR13 C8 R11 Q1Q3D2AL2DCR QCRQC1CRL01G1G2Z1A7 R9 AB A15C4C9C0QIL Z2 06 04U1C3R4 RL4JWZC7D5 D3R3 R5 R6R2JW5QCBYR

21Table 4 – Dry Coil Air Delivery CFM* -- Horizontal Discharge -- Unit 50VT--A24--60Unit Motor SpeedWire Color External Static Pressure (in W.C)0.1 0.

22Table 7 – Horizontal and Downflow Discharge Wet Coil Pressure Drop (IN. W.C.)UNIT SIZESTANDARD CFM (SCFM)600 700 800 900 1000 1100 1200 1300 1400 15

23MAINTENANCETo ensure continuing high performance, and to minimize thepossibility of premature equipment failure, periodic maintenancemust be perform

24A09412Fig. 18 -- Cooling Charging Table-- Subcooling50VT--A

25OF2OF1ONQUIETSHIFT1203060603090INTERVAL TIMEROFFP3DFTO R W2 Y CT2 C C ODFTT1 YP1J1SPEEDUPSpeedupPinsDefrost intervalDIP switchesQuietShif

26Step 2 — Outdoor Coil, Indoor Coil, andCondensate Drain PanInspect the condenser coil, evaporator coil, and condensate drainpan at least once each y

27Step 8 — Pressure SwitchesPressure switches are protective devices wired into control circuit(low voltage). They shut off compressor if abnormally h

28Puron (R--410A) Refrigerant ChargingRefer to unit information plate and charging chart. Some R--410Arefrigerant cylinders contain a dip tube to allo

29PURONR (R-- 410A) QUICK REFERENCE GUIDES Puron refrigerant operates at 50--70 percent higher pressures than R--22. Be sure that servicing equipment

3A09410Fig. 2 -- 50VT --A24-- 30 Unit Dimensions50VT--A

30Table 10 – Troubleshooting ChartSYMPTOM CAUSE REMEDYCompressor and condenser fan will not start.Power failure Call power companyFuse blown or circui

31START--UP CHECKLIST(Remove and Store in Job Files)I. PRELIMINARY INFORMATIONMODEL NO.:SERIAL NO.:DATE:TECHNICIAN:II. PRESTART--UP (Insert check mark

32Copyright 2011 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Da te: 01/11Manufacturer reserves the right to change, at any tim

4A09411Fig. 3 -- 50VT --A36-- 60 Unit Dimensions50VT--A

5RETURN AIR SMALLBASE UNITSUPPLYAIRLARGEBASE UNITUNIT PLACEMENT ON COMMON CURBLARGE CURBSMALL OR LARGE BASE UNITSMALL/COMMON CURBROOF CURB DETAILWood

6ACCESS PANELS MUST BE IN PLACE WHEN RIGGING.PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION.50CY502286 2.0CAUTION - NOTICE TO RIGGERSPRUD

7Step 5 — Select and Install DuctworkThe design and installation of the duct system must be inaccordance with the standards of the NFPA for installati

8screwed or bolted to duct flanges. Use suitable gaskets toensure weather--tight and airtight seal.4. All units must have field--supplied filters or a

9POWERSUPPLYFIELD-SUPPLIEDFUSED DISCONNECTHIGH VOLTAGEPOWER LEADS(SEE UNIT WIRINGLABEL)EQUIP GRCONTROL BOXLOW-VOLTAGEPOWER LEADS(SEE UNITWIRING LABEL)