Carrier 50HS Product Data
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Carrier 50HS Product Data

Single-package heat pumps 1/2 to 5 nominal tons
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Copyright 1998 Carrier Corporation
Product
Data
50HS
Single-Package
Heat Pumps
1
1
⁄
to 5 Nominal Tons
2
Single-Package Heat Pump for
Manufactured Housing/Residential
and Light Commercial use.
Features/Benefits
One-piece heat pumps with
optional electric heaters, low
installation costs, dependable
performance, and easy
maintenance
Easy installation
Factory-assembled package is a
compact, fully self-contained, heat
pump unit that is prewired, prepiped,
and precharged for minimum instal-
lation expense.
50HS units are available in a variety
of standard sizes with voltage options to
meet residential and light commercial
requirements. Unit is installed easily
on a rooftop or a ground-level pad.
The optional base rail unit provides an
elevated base.
Convertible duct configuration on
the 50HS is designed for easy use in
either downflow or horizontal dis-
charge applications.
Efficient operation
High-efficiency design with SEERs
(Seasonal Energy Efficiency Ratios) up
to 10.1 and HSPFs (Heating Seasonal
Performance Factors) of up to 7.0.
Durable, dependable
components
Compressors are designed for high
efficiency. Each compressor is her-
metically sealed against contamination
to help promote longer life and de-
pendable operation. Vibration isolation
provides quiet operation. Reciprocat-
ing or scroll compressors are used.
Compressors have internal high-
pressure and overcurrent protection.
Form 50HS-3PD

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Summary of Contents for Carrier 50HS

  • Page 1: Features/Benefits

    The optional base rail unit provides an elevated base. Convertible duct configuration on the 50HS is designed for easy use in either downflow or horizontal dis- charge applications. Efficient operation High-efficiency design with SEERs (Seasonal Energy Efficiency Ratios) up...

  • Page 2: Table Of Contents

    Direct-drive multispeed, PSC foil-faced fiberglass to help keep the Compact size enables the unit to be (permanent split capacitor) conditioned air from being affected by located where space is limited. blower motor is standard on all the outdoor ambient temperature Downflow-only option is shipped models.

  • Page 3: Ari Capacities

    — Coefficient of Performance — Department of Energy HSPF — Heating Seasonal Performance Factor SEER — Seasonal Energy Efficiency Ratio *Air Conditioning & Refrigeration Institute. OUTDOOR SOUND: ONE-THIRD OCTAVE BAND DATA — DECIBELS UNIT 50HS FREQ. 40.1 49.6 46.8 47.6 50.0...

  • Page 4: Options And Accessories

    Options and accessories Manual outdoor-air damper provides for minimum out- Options door air and is manually adjustable to different positions. Unit with base rail provides holes for rigging and han- dling as well as an elevated mounting frame that gives ad- Thermostat and subbase provide heating and cooling ditional structural support for horizontal installations.

  • Page 5: Dimensions

    Dimensions SIZES 018-036 WITHOUT BASE RAIL UNIT WT CORNER WT (Lb/Kg) UNIT HEIGHT (in./mm) DIMENSION (in./mm) ELECTRICAL UNIT CHARACTERISTICS 50HS018 208/230-1-60 66/30 45/20 95/43 42/19 24.1/613 18.2/462 50HS024 208/230-1-60 68/31 46/21 97/44 45/20 24.1/613 18.2/462 50HS030 208/230-1-60, 208/230-3-60 66/30 58/26 91/41 53/24 24.1/613...
  • Page 6 Dimensions (cont) SIZES 018-036 WITH OPTIONAL BASE RAIL UNIT WT CORNER WT (Lb/Kg) UNIT HEIGHT (in./mm) DIMENSION (in./mm) ELECTRICAL UNIT CHARACTERISTICS 50HS018 208/230-1-60 70/32 50/23 100/45 48/22 27.43/697 21.50/546 50HS024 208/230-1-60 73/33 51/23 102/46 50/23 27.43/697 21.50/546 50HS030 208/230-1-60, 208/230-3-60 71/32 63/29 96/44...
  • Page 7 SIZES 042-060 WITHOUT BASE RAIL UNIT WT CORNER WT (Lb/Kg) CENTER OF GRAVITY (in./mm) ELECTRICAL UNIT UNIT CHARACTERISTICS 50HS042,048 208/230-1-60, 208/230-3-60, 460-3-60 359 163 89/40 81/37 113/51 76/35 50HS042,048 19.7/500 20.5/522 15.0/381 50HS060 208/230-1-60, 208/230-3-60, 460-3-60 373 170 92/42 85/39 116/53 80/36 50HS060 19.7/499 20.6/523...
  • Page 8 Dimensions (cont) SIZES 042-060 WITH OPTIONAL BASE RAIL UNIT WT CORNER WT (Lb/Kg) CENTER OF GRAVITY (in./mm) ELECTRICAL UNIT UNIT CHARACTERISTICS 50HS042,048 208/230-1-60, 208/230-3-60, 460-3-60 379 172 94/43 86/39 118/54 81/37 50HS042,048 19.6/498 20.6/524 17.3/440 50HS060 208/230-1-60, 208/230-3-60, 460-3-60 393 179 97/44 90/41 121/55 85/39 50HS060 19.6/497 20.6/524...
  • Page 9 ROOF CURB, SIZES 018-060 PART NUMBER ‘‘A’’ CPRFCURB001A01 8 [203] Flat CPRFCURB002A01 11 [279] CPRFCURB003A01 14 [356] NOTES: 1. Roof curb must be set up for unit being installed. 2. Seal strip must be applied as required for unit being installed. 3.

  • Page 10: Selection Procedure

    Selection procedure I Determine cooling and heating requirements at Determine additional electric heat capacity in kW. design conditions. 13,650 Btuh Given: = 4.0 kW of heat required 3414 Btuh/kW Required Cooling Capacity (TC) ..28,000 Btuh Sensible Heat Capacity (SHC) .

  • Page 11: Performance Data

    Performance data COOLING CAPACITIES 50HS018 (1 ⁄ TONS) 50HS036 (3 TONS) Indoor Entering Air — Cfm/BF Indoor Entering Air — Cfm/BF Temp (F) Temp (F) Air Ent Air Ent 525/0.05 675/0.07 750/0.07 1050/0.10 1300/0.13 1500/0.14 Outdoor Outdoor Indoor Entering Air — Ewb (F) Indoor Entering Air —...

  • Page 12: Performance Data

    Performance data (cont) COOLING CAPACITIES (cont) LEGEND 50HS048 (4 TONS) — Bypass Factor Indoor Entering Air — Cfm/BF Temp (F) — Entering Dry-Bulb Air Ent Ewb — Entering Wet-Bulb 1400/0.06 1600/0.07 1800/0.08 Outdoor — Total Unit Power Input Evap Air — Ewb (F) Coil —...
  • Page 13 HEATING CAPACITIES (cont) 50HS024 (2 TONS) Temp (F) Indoor Air Temp Entering Outdoor Coil (F db at 70% rh) Air Ent Indoor –10 Coil (std) Cap. 3.85 3.85 7.20 7.20 10.60 9.96 12.90 11.80 13.90 12.50 17.30 15.10 21.40 20.50 24.30 24.30 25.50 25.50 29.70 29.70 1.73 1.81 1.89...
  • Page 14 Performance data (cont) HEATING CAPACITIES (cont) 50HS036 (3 TONS) Temp (F) Indoor Air Temp Entering Outdoor Coil (F db at 70% rh) Air Ent Indoor −10 Coil (std) Cap. 3.94 3.94 9.13 9.13 14.30 13.50 17.90 16.40 19.50 17.60 24.70 21.60 31.30 30.00 35.80 35.80 37.90 37.90 44.90 44.90 1050 2.29 2.44...
  • Page 15 HEATING CAPACITIES (cont) 50HS048 (4 TONS) Temp (F) Indoor Air Temp Entering Outdoor Coil (F db at 70% rh) Air Ent Indoor −10 Coil (std) Cap. 11.40 11.40 17.30 17.30 23.20 21.90 27.40 25.00 29.20 26.30 35.10 30.80 42.60 40.80 47.90 47.90 50.10 50.10 57.50 57.50 1400 3.27 3.40...
  • Page 16 Performance data (cont) DRY COIL AIR DELIVERY* — HORIZONTAL DISCHARGE (DEDUCT 10% FOR 208 V) 230 AND 460 V HORIZONTAL DISCHARGE UNIT MOTOR External Static Pressure (in. wg) 50HS SPEED Watts — — — — — — — — —...
  • Page 17 DRY COIL AIR DELIVERY* — VERTICAL DISCHARGE (DEDUCT 10% FOR 208 V) 230 AND 460 V VERTICAL DISCHARGE UNIT MOTOR External Static Pressure (in. wg) 50HS SPEED Watts — — — — — — — — — — Watts —...
  • Page 18 Performance data (cont) WET COIL PRESSURE DROP ACCESSORY ELECTRIC HEAT PRESSURE DROP (in. wg) AIRFLOW PRESSURE DROP UNIT 50HS (cfm) (in. wg) HEATER 0.069 1000 1200 1400 1600 1800 2000 2200 0.082 5-20 0.030 0.033 0.037 0.042 0.047 0.052 0.060 0.067 0.075 0.102...
  • Page 19 MAX FUSE ELECTRIC HEAT HEATER ELECTRIC HEAT/ AMPACITY FOR OR HACR MOCP UNIT (kW)* ACCESSORY KIT WIRE SIZING BRKR 50HS CPHEATER---A00 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 3.75...
  • Page 20 MAX FUSE ELECTRIC HEAT HEATER ELECTRIC HEAT/ AMPACITY FOR OR HACR MOCP UNIT (kW)* ACCESSORY KIT WIRE SIZING BRKR 50HS CPHEATER---A00 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 10.0...
  • Page 21 0.92 1.00 Example: 20.0 kW (at 240 v) heater on 230 v = 20.0 (0.92 multiplication factor) = 18.4 kW capacity at 230 v MINIMUM AIRFLOW (CFM) FOR SAFE ELECTRIC HEATER OPERATION UNIT 50HS HORIZONTAL DISCHARGE 1000 1300 1300 1600...

  • Page 22: Electrical Data

    Electrical data POWER SUPPLY AWG 60 C COMPRESSOR UNIT MAX WIRE FUSE OR HACR BRK V-PH-Hz 50HS LENGTH WIRE 208/230-1-60 10.4 49.0 15.5 208/230-1-60 11.2 61.0 17.4 208/230-1-60 14.4 82.0 22.0 208/230-3-60 10.4 65.5 17.0 208/230-1-60 18.0 96.0 26.7 208/230-3-60 11.4...

  • Page 23: Controls

    Controls Heating — On a call for heat, thermostat makes circuits Sequence of operation R-Y and R-G. When power is supplied to unit, the transformer (TRAN) is energized. When compressor time delay (5 ± 2 minutes) is com- pleted, a circuit is made to C, starting COMP and OFM. On units with crankcase heater, heater is also energized.

  • Page 24: Typical Single-Phase Control Wiring Schematic

    Typical single-phase control wiring schematic LEGEND — American Wire Gage — Contactor, Compressor — Capacitor — Crankcase Heater — Common COMP — Compressor Motor — Defrost Board — Defrost Thermostat — Defrost Relay EQUIP — Equipment — Fuse — Ground —...

  • Page 25: Typical Piping And Wiring

    Typical piping and wiring SLAB MOUNT Power Wiring *Separate disconnect per National Electrical Code (NEC) is required for Control Wiring electric heater when single-point connection is not used. Outdoor Airflow Indoor Airflow...

  • Page 26: Typical Installation

    Typical installation (cont) CURB MOUNT...

  • Page 27: Guide Specifications

    1. Fully hermetic type with internal and external vi- 18,000 to 60,000 Btuh, Nominal bration isolation. (Heating) 2. All reciprocating compressors are equipped with Carrier Model Number: 50HS crankcase heaters. Part 1 — General E. Coils: 1.01 SYSTEM DESCRIPTION 1. Indoor and outdoor coils shall have aluminum- plate fins mechanically bonded to seamless cop-...

  • Page 28: Guide Specifications

    Thermostat provides 2-stage heating and 2-stage cooling control with remote communication ability. Carrier Corporation • Syracuse, New York 13221 6-98 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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