Carrier 50HJQ014 Installation, Start-Up And Service Instructions Manual
  1. Manuals
  2. Brands
  3. Carrier Manuals
  4. Heat Pump
  5. 50HJQ014
  6. Installation, start-up and service instructions manual
Carrier 50HJQ014 Installation, Start-Up And Service Instructions Manual

Carrier 50HJQ014 Installation, Start-Up And Service Instructions Manual

Single-package rooftop heat pump units
Hide thumbs Also See for 50HJQ014:
Table of Contents

Advertisement

Quick Links

CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Step 1 - Provide Unit Support . . . . . . . . . . . . . . . . . . . 1
• ROOF CURB
Step 2 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 1
• POSITIONING
Step 3 - Field Fabricate Ductwork . . . . . . . . . . . . . . . 3
Step 4 - Make Unit Duct Connections . . . . . . . . . . . 7
Step 5 - Trap Condensate Drain . . . . . . . . . . . . . . . . . 7
Step 6 - Make Electrical Connections . . . . . . . . . . . 7
Step 8 - Install Outdoor-Air Hood . . . . . . . . . . . . . . 10
Step 9 - Install All Accessories. . . . . . . . . . . . . . . . . 10
• PREMIERLINK™ CONTROL
Step 11 - Set Defrost Cycle . . . . . . . . . . . . . . . . . . . . 24
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-31
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-37
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 38-43
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
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
install, 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.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 535-00127
Book 1
4
Tab
5a 5a
Installation, Start-Up
and Service Instructions
Page
Printed in U.S.A.
Single-Package Rooftop
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. Electrical shock
could cause personal injury.

INSTALLATION

IMPORTANT: Units have high ambient operating limits. If
limits are exceeded, the unit will automatically lock the
compressor out of operation. Manual reset will be required
to restart the compressor.

Step 1 - Provide Unit Support

ROOF CURB - Assemble and install accessory roof curb in
accordance with instructions shipped with the curb. Accessory
roof curb and information required to field fabricate a roof curb
are shown in Fig. 1 and 2. Install insulation, cant strips, roofing,
and counter flashing as shown. Ductwork can be secured to
roof curb before unit is set in place. Horizontal adapter installa-
tion is shown in Fig. 2.
IMPORTANT: The gasketing of the unit to the roof curb is
critical for watertight seal. Install gasket supplied with the
roof curb as shown in Fig. 1. Improperly applied gasket can
result in air leaks and poor unit performance.
Curb should be level. This is necessary to permit unit drain
to function properly. Unit leveling tolerances is ±
linear ft in any direction. Refer to Accessory Roof Curb Instal-
lation Instructions for additional information as required.
ALTERNATE UNIT SUPPORT - When the curb cannot be
used, support unit with sleepers using unit curb support area. If
sleepers cannot be used, support long sides of unit with a mini-
mum of 3 equally spaced 4-in. x 4-in. pads on each side.
Step 2 - Rig and Place Unit -
portation damage. File any claim with transportation agency.
Keep unit upright, and do not drop. Use spreader bars over unit
to prevent sling or cable damage. Rollers may be used to move
unit across a roof. Level by using unit frame as a reference;
1
leveling tolerance is ±
/
16
See Fig. 1 for additional leveling tolerance information. Unit
weight is shown in Table 1.
Four lifting holes are provided in ends of unit base rails as
shown in Fig. 3. Refer to rigging instructions on unit.
Form 50HJQ-15SI
Pg 1
50HJQ014,016
Heat Pump Units
1
/
in. per
16
Inspect unit for trans-
in. per linear ft in any direction.
3-06
Replaces: 50HJQ-8SI

Advertisement

Table of Contents
loading

Related Manuals for Carrier 50HJQ014

Summary of Contents for Carrier 50HJQ014

  • Page 1: Table Of Contents

    50HJQ014,016 Single-Package Rooftop Heat Pump Units Installation, Start-Up and Service Instructions CONTENTS Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have Page fire extinguisher available for all brazing operations. SAFETY CONSIDERATIONS ..... . 1 INSTALLATION .

  • Page 3: Roof Mount

    FULLY INSULATED SUPPLY PLENUM 2" X 1/4 1" INSULATION 3 1/2" SUPPORT TYP. 1 1/2 # DENSITY, STICK PINNED & GLUED STITCH WELDED 14 3/4" 23" 6" 12" WIDE STANDING SEAM PANELS NOTE: CRRFCURB013A00 is a fully factory preassembled horizontal adapter and includes an insulated transition duct.
  • Page 4 Table 1 — Physical Data UNIT SIZE 50HJQ 208/230, 460 V 575 V NOMINAL CAPACITY (tons) OPERATING WT (lb) Al/Al* 1615 1925 Al/Al Coated* 1615 1925 Unit Al/Cu* 1745 2075 Cu/Cu* 1815 2165 Electric Heat Economizer Roof Curb† COMPRESSOR Semi-Hermetic Type (Number) 06D-328 (1) 06D-818 (2)
  • Page 5 9. A 90 degree elbow must be installed on the supply ductwork below the unit discharge for units equipped with electric heat. ECONOMIZER STANDARD UNIT WEIGHT WEIGHT 1615 lb (733 kg) 90 lb (41 kg) Fig. 4 — Base Unit Dimensions — 50HJQ014...
  • Page 6 NOTES: 1. Refer to print for roof curb accessory dimensions. 2. Dimensions in ( ) are in millimeters. Center of Gravity. Direction of airflow. 5. Ductwork to be attached to accessory roof curb only. 6. Minimum clearance: • Rear: 7′-0″ (2134) for coil removal. This dimension can be reduced to 4′-0″...

  • Page 7: Step 4 - Make Unit Duct Connections

    1371 For vertical supply and return units, tools or parts could = 457 drop into ductwork and cause injury. Install a 90-degree Determine maximum deviation from average voltage: turn in the return ductwork between the unit and the condi- (AB) 457 – 452 = 5 v tioned space.
  • Page 8 Shaded area indicates block-off panels. NOTE: Dimensions A, A′ and B, B′ are obtained from field-supplied ceiling diffuser. Fig. 8 — Concentric Duct Details Table 2 — Electrical Data COMPRESSOR OUTDOOR DISCONNECT VOLTAGE INDOOR FAN POWER ELECTRIC HEAT* POWER SUPPLY VOLTAGE SIZING RANGE...

  • Page 9: Field Control Wiring

    NOTE: The maximum wire size for TB1 is 350 kcmil for all unit voltages. Fig. 11 — Field Power Wiring Connections Fig. 12 — Field Control Thermostat Wiring FIELD CONTROL WIRING — Install a Carrier-approved Table 3 — Heat Anticipator Settings accessory thermostat assembly according to the installation instructions included with the accessory.

  • Page 10: Step 7 - Make Outdoor-Air Inlet Adjustments

    MOTORMASTER® I CONTROL INSTALLATION 6T3 4T2 2T1 LOAD Install Field-Fabricated Wind Baffles — Wind baffles must be field-fabricated for all units to ensure proper cooling cycle operation at low ambient temperatures. See Fig. 18 for baffle details. Use 20-gage, galvanized sheet metal, or similar corrosion-resistant metal for baffles.
  • Page 11 LOWER FILTER RETAINER FILTER SUPPORT BRACKET HOOD SIDE PANELS (2) HOOD TOP PANEL LOWER FILTER RETAINER FILTER SUPPORT BRACKET HOOD DRAIN PAN UPPER FILTER RETAINER NOTE: Dimensions in ( ) are in mm. NOTE: The outdoor-air hood comes with a baffle which is not used Fig.

  • Page 12: Step 10 - Adjust Factory-Installed Options

    The PremierLink controller (see Fig. 20) requires the use of NOTE: The sensor must be mounted in the discharge airstream a Carrier electronic thermostat or a CCN connection for time downstream of the cooling coil and any heating devices. Be broadcast to initiate its internal timeclock.

  • Page 14: Enthalpy Switch/Receiver

    Refrigeration and Air Conditioning Engineers] 90.1 crite- Wiring — Carrier recommends the use of 18 to 22 AWG ria). If an accessory enthalpy sensor (33CSENTSEN) is at- (American Wire Gage) twisted pair or shielded cable for all tached to the return air sensor input, then differential enthalpy is wiring.

  • Page 15: Enthalpy Switch/Receiver

    Fig. 22 — Enthalpy Switch/Receiver Dimensions Fig. 23 — Enthalpy Sensor Dimensions (33CSENTHSW) (33CSENTSEN) *Used with Differential Enthalpy Control only. Fig. 24 — Typical Wiring Schematic — Carrier Rooftop Unit with PremierLink™ Controls...

  • Page 16: Differential Enthalpy Control

    J4 — pin 1 on the PremierLink control. Wire the GND terminal on the enthalpy switch/ NOTE: If installing in a Carrier rooftop, use the two gray wires receiver to J1 — pin 2 on the PremierLink control. The HI provided from the control section to the economizer to connect Enthalpy terminal is not used.

  • Page 17: Differential Enthalpy Control

    120 VAC LINE VOLTAGE 24 VAC SECONDARY 24 VAC OUTPUT FROM N/C CONTACT WHEN THE OUTDOOR ENTHALPY IS LESS THAN THE INDOOR ENTHALPY (ENABLE ECONOMIZER) 24 VAC OUTPUT FROM N/O CONTACT WHEN THE INDOOR ENTHALPY IS GREATER THAN THE OUTDOOR ENTHALPY HI LOW GND 24 4-20 24-36...

  • Page 18: Optional Economi$Eriv And Economi$Er2

    OPTIONAL ECONOMI$ERIV AND ECONOMI$ER2 — Table 7 — Supply Air Sensor Temperature/ See Fig. 28 and 29 for EconoMi$erIV component locations. Resistance Values See Fig. 30 for EconoMi$er2 component locations. TEMPERATURE (F) RESISTANCE (ohms) NOTE: These instructions are for installing the optional –58 200,250 EconoMi$erIV and EconoMi$er2 only.
  • Page 19 LEGEND Potentiometer Default Settings: NOTES: Power Exhaust Middle 1. 620 ohm, 1 watt 5% resistor should be removed only when using differential DCV — Demand Controlled Ventilation Minimum Pos. Fully Closed enthalpy or dry bulb. IAQ — Indoor Air Quality DCV Max.

  • Page 20: Economi$Eriv Control Modes

    Low Temperature Compressor Lockout Switch — The EconoMi$erIV is equipped with an ambient temperature lock- out switch located in the outdoor airstream which is used to lockout the compressors below a 42 F ambient temperature. See Fig. 28. ECONOMI$ERIV CONTROL MODES IMPORTANT: The optional EconoMi$er2 does not include a controller.

  • Page 21: Differential Enthalpy Control

    Outdoor Enthalpy Changeover — For enthalpy control, ac- this mode of changeover control, turn the enthalpy set point cessory enthalpy sensor (part number HH57AC078) is potentiometer fully clockwise to the D setting. required. Replace the standard outdoor dry bulb temperature NOTE: Remove 620-ohm resistor if differential enthalpy sen- sensor with the accessory enthalpy sensor in the same mount- sor is installed.
  • Page 22 = Outdoor-Air Temperature OA = Percent of Outdoor Air = Return-Air Temperature RA = Percent of Return Air 24 Vac = Mixed-Air Temperature As an example, if local codes require 10% outdoor air during occupied conditions, outdoor-air temperature is Open 60 F, and return-air temperature is 75 F.
  • Page 23 See Table 9. damper in this manner, first determine the damper voltage out- Use setting 1 or 2 for Carrier equipment. See Table 9. put for minimum or base ventilation. Base ventilation is the 1. Press Clear and Mode buttons. Hold at least 5 seconds ventilation required to remove contaminants during unoccu- until the sensor enters the Edit mode.

  • Page 24: Step 11 - Set Defrost Cycle

    Remove tape from the fan pulley and adjust pulleys on factory set at 30 minutes. The timer may be field-adjusted to 50HJQ014 units as required. See Indoor-Fan, 50HJQ014 Units 50 or 90 minutes by moving the wire from the 30-minute con- section on page 31.
  • Page 25 Table 11A — Fan Performance Data, 50HJQ014; 208/230, 460 V Units EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Watts Watts Watts Watts Watts 3750 0.55 0.78 1.01 1028 1097 1.25 1111 1309 1.49 4000 0.70 0.94 1034 1.18 1050 1247 1.42...
  • Page 26 Table 11B — Fan Performance Data, 50HJQ014; 575 V Units EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Watts Watts Watts Watts Watts 3750 0.55 0.78 1.01 1028 1097 1.25 1111 1309 1.49 4000 0.70 0.94 1034 1.18 1050 1247 1.42...
  • Page 27 Table 12 — Fan Performance Data, 50HJQ016 Units EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Watts Watts Watts Watts Watts 4500 1205 1483 1786 4800 1085 1346 1630 1938 5100 1229 1500 1791 1006 2104 5400 1118 1389 1669 1968 1019 2286 5700...
  • Page 28 Table 14 — Fan Rpm at Motor Pulley Settings* (Factory-Supplied Drives) MOTOR PULLEY TURNS OPEN UNIT 50HJQ † † 1132 1105 1078 1051 1024 (208/230, 460 v) 1462 1436 1410 1384 1358 1332 1305 1279 1253 1227 1201 — — (575 v) †...
  • Page 29 Operating Sequence COOLING, UNITS WITH ECONOMI$ER2, PREMIER- LINK™ CONTROL AND A THERMOSTAT — When free COOLING, UNITS WITHOUT ECONOMIZER — When cooling is not available, the compressors will be controlled by thermostat calls for cooling, terminals G and Y1 are energized. the PremierLink control in response to the Y1 and Y2 inputs The indoor-fan contactor (IFC), reversing valve solenoids from the thermostat.
  • Page 30 If field-installed accessory CO sensors are connected to the • SPT reading is available • OAT ≤ SPT PremierLink™ control, a PID-controlled demand ventilation strategy will begin to operate. As the CO level in the zone • Economizer Position is NOT forced increases above the CO set point, the minimum position of the If any of the above conditions are not met, the economizer...

  • Page 31: Service

    SERVICE Indoor Fan, 50HJQ014 Units PERFORMANCE ADJUSTMENT — Fan motor pulleys on the 50HJQ014 units are factory set for speed shown in Table 1. To change fan speeds: Before performing service or maintenance operations on 1. Shut off unit power supply.
  • Page 32 5. Loosen screw C. 6. Rotate motor mount assembly (with motor attached) as far as possible away from indoor coil. Fig. 46 — 50HJQ014 Indoor-Fan Motor Section 7. Remove belt. 8. Rotate motor mount assembly back past original position toward indoor coil.
  • Page 33 Refrigerant Charge — Amount of refrigerant charge is listed on unit nameplate and in Table 1. Refer to Carrier GTAC II; Module 5; Charging, Recovery, Recycling, and Rec- lamation section for charging methods and procedures. Unit panels must be in place when unit is operating during charging procedure.
  • Page 34 Replacement Parts — A complete list of replacement overcurrent. Do not bypass connections or increase the size of parts may be obtained from any Carrier distributor upon the breaker to correct trouble. Determine the cause and correct request. it before resetting the breaker.
  • Page 35 Fig. 51 — Typical Wiring Diagram (50HJQ016, 208/230-3-60 V Shown)
  • Page 36 Fig. 52 — Typical Component Arrangement (50HJQ016, 208/230-3-60 V Shown)
  • Page 37 LEGEND AND NOTES FOR FIG. 51 AND 52 LEGEND — Adjustable, Heat Anticipator — Heater — Thermostat Cooling BKR W/AT — Breaks With Amp Turns — Indoor Air Quality Sensor — Thermostat Heating — Contactor, Compressor — Indoor Fan Contactor TRAN —...

  • Page 38: Troubleshooting

    An EconoMi$erIV simulator program is available from 6. Turn the DCV and Exhaust potentiometers CCW until Carrier to help with EconoMi$erIV training and troubleshooting. the Exhaust LED turns on. The exhaust contacts will ECONOMI$ERIV PREPARATION — This procedure is close 30 to 120 seconds after the Exhaust LED turns on.
  • Page 39 Table 18 — Check Valve Functions COOLING CYCLE HEATING CYCLE CHECK VALVE COOLING HEATING CHECK VALVE STUCK CHECK VALVE STUCK IDENTIFICATION LOCATION CYCLE CYCLE (See Fig. 53) Open Closed Open Closed Lose circuiting in Outdoor coil; Bottom 3 circuits Closed Open outdoor coil.

  • Page 40: Cooling/Heating Cycles

    NOTES: → — Refrigerant Flow Direction 1. Hot gas from compressor flows through the 4-way valve and is ∆ — Check Valve Flow Direction directed to the outdoor-coil header. At the header it is con- — Fixed Orifice densed and subcooled through converging circuits (7-2-1). Refrigerant leaves the outdoor-coil by way of the check valve to the liquid line.
  • Page 43 Fig. 56 — EconoMi$erIV Functional View...

  • Page 44: Index

    INDEX Air quantity limits Outdoor fan Carrier Comfort Network Adjustment Changeover set points Physical data Charging chart, refrigerant Power supply Clearance Wiring 5, 6 sensor PremierLink controls 12-15 Configuration Pressure, drop Settings Economizer 22, 23 Compressor Electric heat Lockout Glycol heat...
  • Page 45 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 2006 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 535-00127 Printed in U.S.A. Form 50HJQ-15SI Pg 46 3-06 Replaces: 50HJQ-8SI Book 1 5a 5a...

  • Page 48: Start-Up Checklist

    VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGE 33 GENERAL ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS Copyright 2006 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book Catalog No.

This manual is also suitable for:

50hjq016

Table of Contents