Table of Contents
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Copyright 1997 Carrier Corporation
Product
Data
50HX024-060
High Efficiency
Single-Package
Heat Pumps
2 to 5 Nominal Tons
High Efficiency Single-Package Heat
Pump for Manufactured Housing/
Residential and Light Commercial
use.
Features/Benefits
One-piece heat pumps wi-
thoptional electric heaters;
low installation costs;
highly efficient, dependable
performance; and easy
maintenance
Efficient operation
High-efficiency design with SEERs
(Seasonal Energy Efficiency Ratios) up
to 12.0 and HSPFs (Heating Seasonal
Performance Factors) of up to 7.2.
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.
50HX units are available in a vari-
ety 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 50HX is designed for easy use
in either downflow or horizontal dis-
charge applications.
Carrier means Top Quality
and Reliability
Each component is designed and
tested for years of operation under
the harsest conditions.
Every unit is thoroughly run tested
at the factory in each operating mode
Form 50HX-2PD
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Table of Contents
Related Manuals for Carrier 50HX024-060
Summary of Contents for Carrier 50HX024-060
- Page 1 Convertible duct configuration on the 50HX is designed for easy use in either downflow or horizontal dis- charge applications. Carrier means Top Quality and Reliability Each component is designed and tested for years of operation under the harsest conditions.
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Page 2: Table Of Contents
and evacuated prior to final charg- Chronotemp™ defrost system pro- Easy to service cabinets provide ing. Automated run testing allows vides time/temperature-based defrost easy accessibility to serviceable com- accurate undisputed tests and mea- cycles to maintain unit efficiency. ponents during installation and surements which are second to none This highly reliable system checks for maintenance. -
Page 3: Features/Benefits
Features/Benefits (cont) All units are designed with a single of capacities. Single-point wiring kit Serviceability continuous top piece to eliminate makes installation simple. Standardized components are any possible leaking at the seams Downflow-only option is shipped found in all safety devices, outdoor-fan or gasketing, which tends to deter- from factory for vertical ductwork con- motors, and control boards. -
Page 4: Physical Data
ARI* capacities (cont) OUTDOOR SOUND: ONE-THIRD OCTAVE BAND DATA — DECIBELS UNIT 50HX FREQ. 49.0 52.8 49.2 50.0 53.2 54.3 60.7 59.2 62.3 64.7 65.4 65.1 68.1 71.9 69.1 70.4 74.5 71.5 69.3 69.7 70.9 69.9 74.3 72.7 1000 70.6 70.4 74.7 75.3... -
Page 5: Options And Accessories
Options and accessories Electronic programmable thermostat provides 2-stage Factory-installed options heating and 2-stage cooling control with remote commu- Unit with base rail provides holes for rigging and fork- nication ability. lifts, as well as an elevated mounting frame that gives additional structural support for horizontal installations. -
Page 6: Dimensions
Dimensions SIZES 024,030 WITHOUT BASE RAIL UNIT CENTER OF GRAVITY UNIT CORNER WEIGHT DIMENSION UNIT HEIGHT (in./mm) UNIT ELECTRICAL WEIGHT (lb/kg) (in./mm) 50HX (in./mm) 50HX CHARACTERISTICS 20.43/519 21.27/540 11.25/286 208/230-1-60 57/26 69/31 75/34 56/25 28.12/714.2 22.18/563.4 20.38/518 21.54/547 11.25/286 208/230-1-60, 208/230-3-60 56/25 87/40 74/34... - Page 7 SIZES 024,030 WITH OPTIONAL BASE RAIL UNIT CENTER OF GRAVITY UNIT CORNER WEIGHT DIMENSION UNIT HEIGHT (in./mm) UNIT ELECTRICAL WEIGHT (lb/kg) (in./mm) 50HX (in./mm) 50HX CHARACTERISTICS 20.27/515 21.30/541 13.83/351 208/230-1-60 62/28 74/34 80/36 61/28 31.43/798.2 25.50/647.7 20.24/514 21.55/547 13.83/351 208/230-1-60, 208/230-3-60 61/28 92/42 79/36...
- Page 8 Dimensions (cont) SIZES 036-060 WITHOUT BASE RAIL REQ’D CLEARANCES FOR SERVICING UNIT WEIGHT CORNER WT (lb/kg) UNIT ELECTRICAL — in. (mm) 50HX CHARACTERISTICS Indoor Coil Access Side ..30 (762.0) 208/230-1-60, 208/230-3-60, 460-3-60 46/21 103/47 81/37 86/39 Control Box Access Side...
- Page 9 SIZES 024-030 WITH OPTIONAL BASE RAIL REQ’D CLEARANCES FOR SERVICING UNIT WEIGHT CORNER WEIGHT (lb/kg) UNIT ELECTRICAL — in. (mm) 50HX CHARACTERISTICS Indoor Coil Access Side ..30 (762.0) 208/230-1-60, 208/230-3-60, 460-3-60 51/23 108/49 86/39 91/41 Control Box Access Side .
- Page 10 Dimensions (cont) ROOF CURB PART NUMBER ‘‘A’’ CPRFCURB001A00 8 [203] FLAT CPRFCURB002A00 11 [279] CPRFCURB003A00 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.
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Page 11: Selection Procedure
Selection procedure I Determine cooling and heating requirements at Determine additional electric heat capacity in kW. design conditions. 13,250 Btuh = 3.9 kW of heat required Given: 3414 Btuh/kW Required Cooling Capacity (TC) ..28,000 Btuh Enter the 50HX Electric Heater Packages —... -
Page 12: Performance Data
Performance data COOLING CAPACITIES 50HX024 (2 TONS) Indoor Air — Cfm/BF Temp (F) 700/0.04 800/0.04 900/0.05 Outdoor Indoor Air — Ewb (F) Ent Air 26.5 23.9 22.0 21.1 26.7 24.1 22.3 21.6 26.8 24.3 22.6 22.0 12.5 16.2 15.7 19.5 12.9 17.1 16.7... - Page 13 COOLING CAPACITIES (cont) 50HX042 (3 ⁄ TONS) Indoor Air — Cfm/BF Temp (F) 1225/0.09 1400/0.10 1575/0.11 Outdoor Indoor Air — Ewb (F) Ent Air 46.1 42.6 39.7 38.9 46.6 43.2 40.4 39.8 47.4 43.7 40.9 40.5 22.9 29.5 28.8 35.7 23.7 31.2 30.6...
- Page 14 Performance data (cont) HEATING CAPACITIES 50HX024 (12 TONS) Return Temperature Air Entering Outdoor Coil (F db at 70% rh) (Std −10 Air) (F db) Cap. 10.9 10.0 12.9 11.8 14.5 13.2 15.2 13.8 17.9 15.7 20.9 20.9 23.4 23.4 24.1 14.1 26.2 26.2...
- Page 15 HEATING CAPACITIES (cont) 50HX036 (3 TONS) Return Temperature Air Entering Outdoor Coil (F db at 70% rh) (Std −10 Air) (F db) Cap. 8.9 8.3 12.1 11.3 15.6 14.8 18.2 16.7 19.8 17.9 23.8 20.8 29.0 29.0 33.5 33.5 35.7 35.7 40.8 40.8 44.8 44.8 2.18 2.27 2.37...
- Page 16 Performance data (cont) HEATING CAPACITIES (cont) 50HX048 (4 TONS) Return Temperature Air Entering Outdoor Coil (F db at 70% rh) (Std −10 Air) (F db) Cap. 11.9 11.1 16.3 15.0 20.7 19.0 23.8 21.7 25.6 23.1 31.6 27.7 39.2 37.6 44.5 44.5 46.8 46.8 54.4 54.4 62.1 62.1 3.05 3.09 3.13...
- Page 17 DRY COIL AIR DELIVERY* — HORIZONTAL AND VERTICAL DISCHARGE (DEDUCT 10% FOR 208 V) — UNITS 024-042 230 AND 460 V HORIZONTAL DISCHARGE UNIT MOTOR SIZE External Static Pressure (in. wg) SPEED 50HX Watts — — — — — — —...
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Page 18: Controls
Performance data (cont) ACCESSORY ELECTRIC HEATER PRESSURE DROP (in. wg) HEATER 1000 1200 1400 1600 1800 2000 2200 5-20 0.030 0.033 0.037 0.042 0.047 0.052 0.060 0.067 0.075 FILTER PRESSURE DROP (in. wg) UNIT FILTER SIZE SIZE 500 600 700 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 50HX (in.) -
Page 19: Electrical Data
Electrical data POWER SUPPLY COMPRESSOR UNIT NOMINAL MOCP 50HX V-Ph-Hz 208/230-1-60 11.2 56.0 17.4 208/230-1-60 15.0 73.0 22.8 208/230-3-60 10.1 63.0 16.6 208/230-1-60 16.0 88.0 23.8 208/230-3-60 10.3 77.0 16.7 460-3-60 39.0 208/230-1-60 20.0 104.0 29.5 208/230-3-60 13.9 88.0 21.9 460-3-60 44.0 10.9... - Page 20 Electrical data (cont) 50HX ELECTRIC HEATER PACKAGES — 208/240 V, SINGLE-PHASE, DUAL-POINT WIRING CONNECTIONS MIN CIRCUIT MAX FUSE ELECTRIC HEAT HEATER UNIT ELECTRIC HEAT AMPACITY FOR OR HACR MOCP (kW)* SIZE ACCESSORY KIT WIRE SIZING BRKR 50HX CPHEATER---A00 208 V 240 V 208 V 240 V...
- Page 21 50HX ELECTRIC HEATER PACKAGES — 208/240 V, 3-PHASE, DUAL-POINT WIRING CONNECTIONS MIN CIRCUIT MAX FUSE ELECTRIC HEAT HEATER UNIT ELECTRIC HEAT AMPACITY FOR OR HACR (kW)* SIZE ACCESSORY KIT WIRE SIZING BRKR 50HX CPHEATER---A00 208 V 240 V 208 V 240 V 208 V 240 V...
- Page 22 Electrical data (cont) 50HX ELECTRIC HEATER PACKAGES — 208/240 V, SINGLE-PHASE, SINGLE-POINT WIRING CONNECTIONS MIN CIRCUIT MAX FUSE ELECTRIC HEAT HEATER UNIT ELECTRIC HEAT AMPACITY FOR OR HACR MOCP (kW)* SIZE ACCESSORY KIT WIRE SIZING BRKR 50HX CPHEATER---A00 208 V 240 V 208 V 240 V...
- Page 23 50HX ELECTRIC HEATER PACKAGES — 208/240 V, 3-PHASE, SINGLE-POINT WIRING CONNECTIONS MIN CIRCUIT MAX FUSE ELECTRIC HEAT HEATER UNIT ELECTRIC HEAT AMPACITY FOR OR HACR MOCP (kW)* SIZE ACCESSORY KIT WIRE SIZING BRKR 50HX CPHEATER---A00 208 V 240 V 208 V 240 V 208 V 240 V...
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Page 24: Typical Control Wiring Schematic
Typical control wiring schematic NOTES: 1. If any of the original wire furnished must be replaced, it must be replaced with type 90° C wire or its equivalent. 2. Thermostat: HH07AT171 Subbase: HH93AZ188 3. Set heat anticipator at .6. 4. Use copper conductors only. LEGEND —... -
Page 25: Typical Piping And Wiring
Typical piping and wiring SLAB MOUNT LEGEND Power Wiring Control Wiring Outdoor Airflow *Separate disconnect per National Electrical Code (NEC) is required for elec- tric heater when single-point connection is not used. Indoor Airflow... - Page 26 Typical piping and wiring (cont) CURB MOUNT...
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Page 27: Guide Specifications
23,800 to 57,000 Btuh (Heating) Fan wheel shall be made from steel, be double- Carrier Model Number: 50HX inlet type. It shall have forward-curved blades Part 1 — General with a corrosion-resistant finish and shall be dynamically balanced. - Page 28 2. Outdoor Thermostat Kit: Thermostat allows for staging of electric heaters based on outdoor-air temperature. Carrier Corporation • Syracuse, New York 13221 6-97 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.