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Carrier 50HS024-060 Installation, Start-Up And Service Instructions Manual

Single-package heat pump units 50 hz, ce units
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Installation, Start-Up and
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2
RECEIVING AND INSTALLATION . . . . . . . . . . . . 2-14
Step 1 - Check Equipment . . . . . . . . . . . . . . . . . . . 2
Step 2 - Provide Unit Support . . . . . . . . . . . . . . . 2
Step 3 - Provide Clearances . . . . . . . . . . . . . . . . . 2
Step 4 - Rig and Place Unit . . . . . . . . . . . . . . . . . . 6
CONNECTION KIT INSTALLATION
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,15
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-19
Check for Refrigerant Leaks . . . . . . . . . . . . . . . . . 15
Unit Start-Up Adjustments . . . . . . . . . . . . . . . . . . . 15
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . 17
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,21
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Unit Top Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Indoor Blower and Motor . . . . . . . . . . . . . . . . . . . . 20
and Condensate Drain Pan . . . . . . . . . . . . . . . . 21
Outdoor Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electrical Controls and Wiring . . . . . . . . . . . . . . . 21
Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Metering Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Liquid Line Strainers . . . . . . . . . . . . . . . . . . . . . . . . 21
CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,23
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1
NOTE TO INSTALLER - Before the installation, READ
THESE INSTRUCTIONS CAREFULLY AND COM-
PLETELY. Also, make sure the Owner's Manual and Serv-
ice Instructions are left with the unit after installation.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Catalog No. 015-034
Tab
5a 5a
Service Instructions
Page
Printed in U.S.A.
Single-Package Heat Pump Units

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical com-
ponents. Only trained and qualified personnel should install,
repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance
functions of cleaning coils and filters. All other operations
should be performed by trained service personnel. When work-
ing on air-conditioning equipment, observe precautions in
the literature, tags and labels attached to the unit, and other
safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire ex-
tinguisher available for all brazing operations.
Before performing service or maintenance operations on
system, turn off main power to unit. Turn off accessory
heater power switch if applicable. Electrical shock can
cause personal injury.

GENERAL

The 50HS heat pumps are fully self-contained and
designed for outdoor installation. See Fig. 1. As shown in
Fig. 2 and 3, all units are shipped in a horizontal-discharge
configuration for installation on a ground-level slab. All units
can be converted to downflow discharge configurations for
rooftop applications. See Fig. 4 for roof curb dimensions.
Fig. 1 - Model 50HS Unit
Form 50HS-C5SI
Pg 1
50HS024-060
50 Hz, CE Units
5-98
Replaces: 50HS-C3SI

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Summary of Contents for Carrier 50HS024-060

  • Page 1: Table Of Contents

    50HS024-060 Single-Package Heat Pump Units 50 Hz, CE Units Installation, Start-Up and Service Instructions CONTENTS SAFETY CONSIDERATIONS Page Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical com- SAFETY CONSIDERATIONS ....1 ponents.

  • Page 2: Receiving And Installation

    Check all items against shipping list. Immediately notify Compressor Test Pressure — High the nearest Carrier Air Conditioning office if any item is missing. To prevent loss or damage, leave all parts in original pack- ages until installation.
  • Page 3 UNIT WT CORNER WT (Kg/Lb) UNIT HEIGHT (mm/in.) DIMENSION (mm/in.) ELECTRICAL UNIT CHARACTERISTICS 50HS024 400-3-50 29/64 31/69 44/ 96 24/52 697/27.4 546/21.5 50HS030 400-3-50 35/78 35/78 53/116 20/43 697/27.4 546/21.5 50HS036 400-3-50 29/63 42/93 45/100 31/68 798/31.4 648/25.5 CENTER OF GRAVITY (mm/in.) UNIT 50HS024 544/21.4...
  • Page 4 UNIT WT CORNER WT (Kg/Lb) CENTER OF GRAVITY (mm/in.) ELECTRICAL UNIT UNIT CHARACTERISTICS 50HS048 400-3-50 38/83 43/95 54/118 30/67 50HS048 543/21.4 540/21.3 440/17.3 50HS060 400-3-50 40/89 42/92 48/105 38/84 50HS060 493/19.4 539/21.2 440/17.3 REQ’D CLEARANCES FOR SERVICING — mm (in.) LEGEND Indoor Coil Access Side .
  • Page 5 ‘‘A’’ PART NUMBER mm [in.] 50SS900015 203 [8] Flat 50SS900016 279 [11] 50SS900017 356 [14] 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. Dimensions in [ ] are in millimeters unless otherwise noted. 4.

  • Page 6: Step 4 - Rig And Place Unit

    REQ — Required NOTE: Mounting frame is constructed of 31.8 mm (1 ⁄ in.) to 38 mm ⁄ in.) commercial standard angle iron. Weld frame together. Paint with zinc-rich paint (rustproof). Fig. 5 — Heat Pump Mounting Frame • All units should have field-supplied filters or accessory fil- Step 4 —...
  • Page 7 Table 1A — Physical Data — SI UNIT 50HS REFRIGERANT* R-22 Refrigerant Control Acutrol™ System OPERATING WEIGHT (Kg) COMPRESSOR Type Reciprocating Reciprocating Reciprocating Scroll Scroll INDOOR BLOWER Centrifugal — Direct Drive Speeds R/s (High/Low Speed) 15.4/13.3 15.4/13.3 15.4/13.3 15.8/15.4 15.8/15.4 Diameter (mm) Width (mm) Nominal Airflow (L/s)
  • Page 8 CHART A — UNITS WITH BASE RAIL Shipping Unit Weight All panels must be in place when rigging. 50HS NOTICE TO RIGGERS 16.26 715.0 28.15 Hook rigging shackles through holes in lifting brackets as shown in Detail A. 16.34 715.0 28.15 Lifting brackets shall be centered around the unit center of gravity.

  • Page 9: Converting Horizontal Discharge Units To Downflow (Vertical) Discharge

    10. If unit ductwork is to be attached to vertical opening flanges on the unit basepan (jackstand applications only), do so at this time. Power Wiring Control Wiring Outdoor Section Airflow Indoor Section Airflow ACCESS PANEL (REMOVE SCREWS) Fig. 8 — Typical Installation Fig.
  • Page 10 11. It is recommended that the basepan insulation around the perimeter of the vertical opening be secured to the basepan with aluminum tape to prevent the insulation from tearing or bunching up when the blower housing is installed in the vertical discharge position. 12.

  • Page 11: Accessory Rectangular Duct

    NOTES: 1. An accessory duct cover is available as an alternative to field fabrication. 2. Construct duct cover out of 0.8 mm (22-gage) sheet metal. Fig. 17 — Field-Fabricated Horizontal Duct Cover ACCESSORY RECTANGULAR DUCT CONNECTION KIT INSTALLATION (024-048 Only) — Refer to Fig. 18 for duct adapter dimensions and hole locations.

  • Page 12: Step 6 - Provide For Condensate Disposal

    Step 6 — Provide for Condensate Disposal NOTE: Be sure that condensate water disposal methods com- ply with local codes, restrictions, and practices. Units dispose of condensate through a ⁄ -in. NPT fitting which exits through the compressor access panel. See Fig.
  • Page 13 Table 3 — Electrical Data VOLTAGE COMPRESSOR ELECTRIC HEAT POWER SUPPLY UNIT V-PH UNIT RANGE 50HS (50 Hz) Nominal kW* MOCP† — — 400-3 10.5 22.1 10.4 15.8 12.9 28.7 — — 400-3 10.5 22.1 10.4 15.8 13.1 28.7 — —...

  • Page 14: Pre-Start-Up

    Table 5 — Multiplication Factors HEATER kW VOLTAGE DISTRIBUTION MULTIPLICATION RATING V, 3 Ph FACTOR 1.00 1.08 1.10 Example: 12.1 kW (at 440 v ) heater on 380 v = 12.1 (.90 multiplication factor) = 10.9 kW capacity at 380 v NOTE: Heater kW rating is voltage as marked on 50HS base unit nameplate.

  • Page 15: Check For Refrigerant Leaks

    REFRIGERANT CHARGE — Amount of refrigerant charge 1. Using both high- and low-pressure ports, locate leaks and is listed on unit nameplate. Refer to Carrier Standard Serv- recover remaining refrigerant to relieve system pressure. ice Techniques Manual, Chapter 1, Refrigerants section.
  • Page 16 Fig. 24 — Cooling Charging Chart, 50HS024 Fig. 26 — Cooling Charging Chart, 50HS036 Fig. 25 — Cooling Charging Chart, 50HS030 Fig. 27 — Cooling Charging Chart, 50HS048 LEGEND (Fig. 24-28) Outdoor-Air Temperature Pressure Compressor Suction Line Temperature...

  • Page 17: Sequence Of Operation

    terminal 3. Remove red wire and replace with black lead for high speed. Make sure that the removed lead is insulated so that it will not contact any unit chassis parts. UNIT CONTROLS — All compressors have the following internal-protection controls. High-Pressure Relief Valve —...
  • Page 18 Table 6 — Dry Coil Air Delivery* — Horizontal and Vertical Discharge — SI 400 VOLT UNIT MOTOR External Static Pressure (Pa) 50HS SPEED Watts — — — — Watts — — — High — — — Watts — — —...
  • Page 19 Table 8A — Wet Coil Pressure Drop — SI Table 8B — Wet Coil Pressure Drop — English AIRFLOW PRESSURE DROP AIRFLOW PRESSURE DROP UNIT 50HS UNIT 50HS (L/s) (Pa) (cfm) (in. wg) 0.039 0.058 0.075 0.088 0.088 1000 0.095 1200 0.123 1000...

  • Page 20: Maintenance

    Only qualified service personnel should perform mainte- MAINTENANCE nance and service procedures that require unit top removal. To ensure continuing high performance, and to minimize To remove unit top: the possibility of premature equipment failure, periodic main- 1. Remove 7 screws on unit top cover surface. (Save all screws.) tenance must be performed on this equipment.

  • Page 21: Outdoor Coil, Indoor Coil, And Condensate Drain Pan

    c. Lift wheel from housing. When handling and/or clean- the wire end and reassemble the connection properly and ing blower wheel, be sure not to disturb balance weights securely. (clips) on blower wheel vanes. After inspecting the electrical controls and wiring, re- d.

  • Page 22: Chart

    COOLING AND HEATING TROUBLESHOOTING CHART SYMPTOM CAUSE REMEDY Compressor and out- Power failure Call power company. door fan will not start. Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, Replace component. control relay, or defrost board Insufficient line voltage Determine cause and correct.

  • Page 23: Cooling And Heating Troubleshooting

    COOLING AND HEATING TROUBLESHOOTING CHART (cont) SYMPTOM CAUSE REMEDY Excessive suction (Heat) Outdoor coil frosted Move timer on control board to 30 minutes pressure. between defrost cycles. (Cool) High heat load Check for source and eliminate. Compressor valves leaking Replace compressor. Reversing valve hung up or leaking internally Replace valve.
  • Page 26 Copyright 1998 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 Catalog No. 015-034 Printed in U.S.A. Form 50HS-C5SI Pg 26 5-98 Replaces: 50HS-C3SI...

  • Page 28: Start-Up Checklist

    VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGES 16 AND 17. VERIFY SCROLL COMPRESSOR (SIZES 048 AND 060 UNITS) IS ROTATING IN CORRECT DIRECTION. Copyright 1998 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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