Carrier 50HJQ004-007 Installation, Start-Up And Service Instructions Manual
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Carrier 50HJQ004-007 Installation, Start-Up And Service Instructions Manual

Carrier 50HJQ004-007 Installation, Start-Up And Service Instructions Manual

Single-package rooftop heat pump units
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Single-Package Rooftop Heat Pump Units
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
Step 1 - Provide Unit Support . . . . . . . . . . . . . . . . . . 1
• ROOF CURB
• SLAB MOUNT
Step 2 - Field Fabricate Ductwork . . . . . . . . . . . . . . ..1
and External Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 4 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 3
• POSITIONING
Step 5 - Make Electrical Connections . . . . . . . . . . . 5
• FIELD CONTROL WIRING
Step 7 - Adjust Indoor-Fan Speed . . . . . . . . . . . . . . 19
•
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-35
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-37
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 38-43
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should in-
stall, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precau-
tions 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 extinguisher available for all brazing operations.
Before performing service or maintenance operations on
unit, turn off main power switch to unit, and install lockout
tag. Electrical shock could cause personal injury.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Book 1
4
Tab
5a 5a
Installation, Start-Up and
Service Instructions
Page
Catalog No. 535-00005
Printed in U.S.A.
50HJQ004-007
INSTALLATION
Unit is shipped in the vertical discharge configuration. To
convert to horizontal configuration, remove horizontal duct
opening covers. Using the same screws, install covers on duct
openings in basepan of unit with the insulation-side down.
Seals around duct openings must be tight.
Step 1 - Provide Unit Support
ROOF CURB - Assemble and install accessory roof curb in
accordance with instructions shipped with curb. See Fig. 1. In-
stall insulation, cant strips, roofing felt, and counter flashing as
shown. Ductwork must be attached to curb, not to the unit. If
electric or control power is to be routed through the basepan,
attach the accessory thru-the-bottom service connections to the
basepan and roof curb in accordance with the accessory instal-
lation instructions. Connections must be installed before unit is
set on roof curb.
IMPORTANT: The gasketing of the unit to the roof curb
is critical for watertightness. Install gasket supplied with
the roof curb as shown in Fig. 1. Improperly applied
gasket can also result in air leaks and poor unit
performance.
Curb should be level. This is necessary for unit drain to
function properly. Unit leveling tolerances are shown in Fig. 2.
Refer to Accessory Roof Curb Installation Instructions for ad-
ditional information as required.
SLAB MOUNT (Horizontal Units Only) - Provide a level
concrete slab that extends a minimum of 6 in. beyond unit cab-
inet. Install a gravel apron in front of condenser coil air inlet to
prevent grass and foliage from obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if
required.
Step 2 - Field Fabricate Ductwork -
ducts to roof curb and building structure on vertical discharge
units. Do not connect ductwork to unit. For horizontal applica-
tions, field-supplied flanges should be attached to horizontal
discharge openings and all ductwork should be attached to the
flanges. Insulate and weatherproof all external ductwork,
joints, and roof openings with counter flashing and mastic in
accordance with applicable codes.
Ducts passing through an unconditioned space must be in-
sulated and covered with a vapor barrier.
If a plenum return is used on a vertical unit, the return
should be ducted through the roof deck to comply with applica-
ble fire codes.
A minimum clearance to combustibles is not required around
ductwork on vertical discharge units. On horizontal discharge
units, a minimum clearance of 1.0 in. is required for the first
12 in. of ductwork. Cabinet return-air static pressure should not
exceed -0.35 in. wg with Durablade economizer, -0.30 in. wg
with EconoMi$er, or -0.45 in. wg without economizer.
Form 50HJQ-6SI
Pg 1
Secure all
11-00
Replaces: 50HJQ-1SI

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  • Page 1: Table Of Contents

    50HJQ004-007 Single-Package Rooftop Heat Pump Units Installation, Start-Up and Service Instructions CONTENTS INSTALLATION Page Unit is shipped in the vertical discharge configuration. To convert to horizontal configuration, remove horizontal duct SAFETY CONSIDERATIONS ..... . 1 opening covers.
  • Page 2 CONNECTOR D ALT POWER CONTROL PKG. ACCY. DRAIN HOLE ″ [19] NPT ″ CRBTMPWR001A00 ″ [31.7] NPT [19] NPT CRBTMPWR002A00 ″ ″ ″ ″ 1′-9 1′-4″ ″ [19] NPT CRBTMPWR003A00 [551] [406] [44.5] [12.7] NPT [12.7] NPT ″ ″ [31.7] NPT CRBTMPWR004A00 [19] NPT NOTES:...

  • Page 3: Step 3 - Install Condensate Drain Line

    reference. See Table 1 and Fig. 4 for additional information. Operating weight is shown in Table 1 and Fig. 4. Lifting holes are provided in base rails as shown in Fig. 4 and 5. Refer to rigging instructions on unit. MAXIMUM ALLOWABLE All panels must be in place when rigging.

  • Page 5: Step 5 - Make Electrical Connections

    Such operation black wire from the 230-v -in. male spade terminal on the invalidates any applicable Carrier warranty. transformer and connecting it to the 208-v -in. male spade NOTE: If accessory thru-the-bottom connections and roof terminal from the transformer.
  • Page 6 Table 1 — Physical Data UNIT SIZE 50HJQ NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit Durablade Economizer EconoMi$er Roof Curb COMPRESSOR Scroll Quantity Oil (oz) REFRIGERANT TYPE R-22 Operating Charge (lb) 10.8 11.9 Propeller Type OUTDOOR FAN Quantity...Diameter (in.) 1...22 1...22 1...22 1...22...
  • Page 7 Table 2A — Electrical Data — Standard Motor (Units Without Electrical Convenience Outlet) MINIMUM UNIT VOLTAGE ELECTRIC POWER NOMINAL COMPRESSOR DISCONNECT RANGE HEAT* SUPPLY UNIT VOLTAGE SIZE V-PH-Hz kW† MOCP —/— —/— 25.6/ 25.6 30/ 30** 25/ 25 101/101 3.3/ 4.4 15.9/18.3 45.5/ 48.5 50/ 50**...
  • Page 8 Table 2B — Electrical Data — High-Static Motor (Units Without Electrical Convenience Outlet) MINIMUM UNIT VOLTAGE ELECTRIC POWER NOMINAL COMPRESSOR DISCONNECT RANGE HEAT* SUPPLY UNIT VOLTAGE SIZE V-PH-Hz kW† MOCP —/— —/— 19.4/ 19.4 20/20 19/ 19 120/120 3.3/ 4.4 9.2/10.6 30.9/ 32.6 35/35...
  • Page 9 Table 2C — Electrical Data — Standard Motor (Units With Electrical Convenience Outlet) MINIMUM UNIT VOLTAGE ELECTRIC POWER NOMINAL COMPRESSOR DISCONNECT RANGE HEAT* SUPPLY UNIT VOLTAGE SIZE V-PH-Hz kW† MOCP —/— — 30.4/ 30.4 35/ 35** 30/ 30 106/106 3.3/ 4.4 15.9/18.3 50.3/ 53.3 60/ 60**...
  • Page 10 Table 2D — Electrical Data — High-Static Motor (Units With Electrical Convenience Outlet) MINIMUM UNIT VOLTAGE ELECTRIC POWER NOMINAL COMPRESSOR DISCONNECT RANGE HEAT* SUPPLY UNIT VOLTAGE SIZE V-PH-Hz kW† MOCP —/— —/— 24.2/ 24.2 25/ 25 25/ 25 124/124 3.3/ 4.4 9.2/10.6 35.7/ 37.4 40/ 40...

  • Page 11: Defrost Board

    NOTE: If using Carrier electronic thermostat, set thermostat configuration for “non-heat pump operation.” The use of the O terminal is not required to energize the reversing valve in this family of products.

  • Page 12: Optional Durablade Economizer

    OPTIONAL DURABLADE ECONOMIZER — The optional economizer hood assembly is packaged and shipped in the fil- ter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical dis- charge position. NOTE: Horizontal discharge block-off plate is shipped with the air hood package.
  • Page 13 BLOCK-OFF PLATE Fig. 13 — Horizontal Discharge Block-Off Plate (TERMINALS ARE UP) U-SHAPED ECONOMIZER HOLE CONTROL ECONOMIZER ECONOMIZER BOARD PLUG MOTOR SCREW (NOT SHOWN) UNIT OUTSIDE AIR SCREEN WIRING HARNESS BAROMETRIC RELIEF DAMPER SHIPPING SCREW ENTHALPY CONTROL POSITION SETTING BRACKET Fig.

  • Page 14: Optional Economi$Er

    ECONOMI$ER CONTROLLER PLUG GEAR-DRIVEN DAMPER LEGEND OAT — Outdoor-Air Thermostat NOTE: See unit wiring diagram for more details. OUTDOOR AIR TEMPERATURE Fig. 17 — Wiring Connections for SENSOR Outdoor-Air Thermostat 0.90 ACTUATOR 0.80 BAROMETRIC RELIEF DAMPERS 0.70 Fig. 19 — EconoMi$er Component Locations 0.60 0.50 0.40...
  • Page 15 5. Slide the outdoor-air inlet screens into the screen track on the hood side panels. While holding the screens in place, fasten the screen retainer to the hood using the screws provided. Repeat the process for the barometric exhaust air screen. Do not attach completed (Fig. 23) hood assembly to unit at this time.
  • Page 16 LEGEND OAT — Outdoor Air Thermostat Fig. 26 — EconoMi$er Wiring ECONOMI$ER BROWN TEMP CONTROLLER VIOLET TEMP OUTDOOR SENSOR WHITE -15 V BROWN TEMP VIOLET RETURN TEMP WHITE SENSOR +15 V SENSOR SUPPLY AIR TEMPERATURE SENSOR REM POT PINK TEMP VIOLET TEMP Fig.
  • Page 17 TO FUSED FAN 1 FAN 2 CAPACITOR 2 DISCONNECT CAPACITOR 1 RELAY 2 GRAY RED YEL BLU GRAY RELAY 1 4-PIN 3-PIN CONNECTOR PLUG CONNECTOR PLUG (HIGH VOLTAGE) (LOW VOLTAGE) X2 X3 FIELD SUPPLIED WIRING SECONDARY SECONDARY 230VAC 230VAC BLACK BLACK COMPRESSOR 1 CONTACTOR...
  • Page 18 Ventilation Air (Minimum Position Set Up) — If ventilation air is not required, proceed to Step 5. If ventilation air is re- quired, perform the following: 1. The indoor fan must be on to set the ventilation air. Either put the thermostat in the continuous fan mode or jumper SUPPLY AIR the R and G terminals at the rooftop unit connection TEMPERATURE...

  • Page 19: Step 7 - Adjust Indoor-Fan Speed

    Table 5 shows fan rpm at motor pulley settings for the 50HJQ004-007 units. Tables 6 and 7 shows data for indoor-fan motors. Refer to Table 8 for accessory and option static pres- sure drops, see Table 9 for indoor-fan motor efficiency, see Tables 10-25 to determine fan speed settings.
  • Page 20 Unit warranty will not be affected. Table 8 — Accessory/FIOP Economizers and Table 9 — Indoor-Fan Motor Efficiency Electric Heaters Static Pressure Drop (in. wg) MOTOR 50HJQ EFFICIENCY 50HJQ004-007 004,005 74/84* COMPONENT 900 1200 1400 1600 1800 2000 2200 2400 2600 1 Heater *Single-phase/3-phase.
  • Page 21 4. Use of a field-supplied motor may affect wire sizing. Contact NOTES: your Carrier representative for details. 1. Boldface indicates field-supplied drive is required. 5. Interpolation is permissible. Do not extrapolate. 2. Maximum usable watts input is 1000 and maximum continuous bhp is 1.20.
  • Page 22 Table 8 for accessory/FIOP static pressure information. 5. Use of a field-supplied motor may affect wire sizing. Contact NOTES: your Carrier representative for details. 1. Boldface indicates field-supplied motor drive is required. 6. Interpolation is permissible. Do not extrapolate. indicates field-supplied motor and drive are required.
  • Page 23 1. Boldface indicates field-supplied drive is required. Table 8 for accessory/FIOP static pressure information. indicates field-supplied motor and drive are required. 5. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative for details. 6. Interpolation is permissible. Do not extrapolate.
  • Page 24 *Motor drive range: 1300 to 1685 rpm. All other rpms require field- and 7 for additional information. supplied drive. 5. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative for details. NOTES: 6. Interpolation is permissible. Do not extrapolate. 1. Boldface indicates field-supplied drive is required.
  • Page 25 Table 8 for accessory/FIOP static pressure information. NOTES: 5. Use of a field-supplied motor may affect wire sizing. Contact 1. Boldface indicates field-supplied drive is required. your Carrier representative for details. 6. Interpolation is permissible. Do not extrapolate. indicates field-supplied motor and drive are required.
  • Page 26 *Motor drive range: 1300 to 1685 rpm. All other rpms require field- and 7 for additional information. supplied drive. 5. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative for details. NOTES: 6. Interpolation is permissible. Do not extrapolate. 1. Boldface indicates field-supplied drive is required.
  • Page 27 5. Use of a field-supplied motor may affect wire sizing. Contact 1. Boldface indicates field-supplied drive is required. your Carrier representative for details. 2. Maximum usable watts input is 1000 and maximum continuous bhp is 1.20. Extensive motor and electrical testing on these Table 20 —...
  • Page 28 6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative for details. Table 22 — Fan Performance 50HJQ005 — Horizontal Discharge Units; High-Static Motor (Belt Drive)* EXTERNAL STATIC PRESSURE (in. wg)
  • Page 29 1. Boldface indicates field-supplied drive is required. Table 8 for accessory/FIOP static pressure information. indicates field-supplied motor and drive are required. 5. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative for details. 6. Interpolation is permissible. Do not extrapolate.
  • Page 30 7 for additional information. supplied drive. 5. Use of a field-supplied motor may affect wire sizing. Contact NOTES: your Carrier representative for details. 1. Boldface indicates field-supplied drive is required. 6. Interpolation is permissible. Do not extrapolate. indicates field-supplied motor is required.
  • Page 31 Table 8 for accessory/FIOP static pressure information. 1. Boldface indicates field-supplied drive is required. 5. Use of a field-supplied motor may affect wire sizing. Contact indicates field-supplied motor is required. your Carrier representative for details. 6. Interpolation is permissible. Do not extrapolate.
  • Page 32 7 for additional information. 1. Boldface indicates field-supplied drive is required. 5. Use of a field-supplied motor may affect wire sizing. Contact indicates field-supplied motor and drive are required. your Carrier representative for details. 6. Interpolation is permissible. Do not extrapolate.

  • Page 33: Pre-Start-Up

    PRE-START-UP START-UP Unit Preparation — Make sure that unit has been in- stalled in accordance with installation instructions and applica- ble codes. Failure to observe the following warnings could result in Return-Air Filters — Make sure correct filters are in- serious personal injury: stalled in unit (see Table 1).
  • Page 34 Compressor restart is accomplished by manual reset at the If the outdoor air alone cannot satisfy the cooling require- thermostat by turning the selector switch to OFF position and ments of the conditioned space, economizer cooling is integrat- then to ON position. ed with mechanical cooling, providing second stage cooling.
  • Page 35 HEATING, UNITS WITH ECONOMIZER — When the room 5. Use a water hose or other suitable equipment to flush temperature calls for heat through terminal W1, the indoor fan down between the 2 coil sections to remove dirt and de- contactor and heater contactor no.
  • Page 36 12 and 14. 007 (208/230 v) Refrigerant Charge — 3.50 Amount of refrigerant charge is (460 v) listed on unit nameplate (also refer to Table 1). Refer to Carrier Fig. 38 — Outdoor-Fan Adjustment Refrigerant Service Techniques Manual, Refrigerants section.
  • Page 37 Fig. 39 — Cooling Charging Chart — 50HJQ004 Fig. 41 — Cooling Charging Chart — 50HJQ006 Fig. 40 — Cooling Charging Chart — 50HJQ005 Fig. 42 — Cooling Charging Chart — 50HJQ007...

  • Page 38: Start-Up

    TROUBLESHOOTING Table 27 — Heating and Cooling Troubleshooting PROBLEM CAUSE REMEDY Compressor and Power failure. Call power company. outdoor fan Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. will not start. Defective thermostat, contactor, transformer, Replace component. control relay, or capacitor.
  • Page 39 Table 28 — Durablade Economizer Troubleshooting PROBLEM CAUSE REMEDY Damper does not Indoor fan is off. 1. Check to ensure that 24 vac is present at terminal C1 on the IFC or that 24 vac is open. present at the IFO terminal. Check whether 24 vac is present at PL6-1 (red wire) and/or PL6-3 (black wire).
  • Page 40 Table 29 — EconoMi$er Troubleshooting PROBLEM CAUSE REMEDY Damper does not Indoor fan is off. Check to ensure that 24 vac is present at Terminal C1 (Common Power) open. on the IFC (Indoor Fan contactor) or that 24 vac is present at the IFO (Indoor Fan On) terminal.
  • Page 41 LEGEND AND NOTES FOR FIG. 43 — Quadruple Terminal — American Wire Gage — Relay — Adjustable Heat Anticipator — Contactor, Compressor — Reversing Valve Solenoid — Supply-Air Thermostat — Capacitor — Circuit Breaker — Switch Fully Open — Switch Fully Closed —...
  • Page 42 Fig. 43 — Typical Wiring Schematic (50HJQ006,007 Shown)
  • Page 43 Fig. 43 — Typical Wiring Schematic (50HJQ006,007 Shown) (cont)
  • Page 44 SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theory, and skills programs are available, using popular video-based formats and materials.
  • Page 46 Copyright 2000 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 535-00005 Printed in U.S.A. Form 50HJQ-6SI Pg 46 11-00 Replaces: 50HJQ-1SI Book 1...

  • Page 48: Start-Up Checklist

    VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGE 37 Copyright 2000 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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