Carrier 50JZ024 Installation, Start-Up And Service Instructions Manual
Single-package heat pump units with puron (r-410a) refrigerant
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- Product data (32 pages) ,
- Installation and operating instructions manual (30 pages) ,
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Table of Contents
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Installation, Start-Up and Service Instructions
SAFETY CONSIDERATIONS ...............................................1-2
.................................................................
RECEIVING AND INSTALLATION..................................2-15
Check Equipment.........................................................................2
Identify Unit..............................................................................2
Inspect Shipment.......................................................................2
Provide Unit Support...................................................................2
Roof Curb..................................................................................2
Slab Mount................................................................................2
Ground Mount...........................................................................2
Provide Clearances.......................................................................2
Rig and Place Unit .......................................................................2
Select and Install Ductwork ....................................................2-7
Discharge ...............................................................................6-7
Provide for Condensate Disposal ............................................7-8
Install Electrical Connections................................................8-14
High-Voltage Connections........................................................8
Routing Power Leads Into Unit ...............................................8
Routing Control Power Wires ..................................................8
Connecting Ground Lead to Ground Lug................................8
Special Procedures for 208v Operation .................................14
PRE-START-UP.........................................................................14
START-UP.............................................................................14-19
Check for Refrigerant Leaks ....................................................14
Start-Up Adjustment ............................................................14-16
Defrost Control......................................................................16-19
MAINTENANCE ..................................................................20-21
REFRIGERANT SYSTEM..................................................21-22
SYSTEM INFORMATION .................................................22-23
Time Delay Relay...................................................................22
Loss of Charge Switch ...........................................................22
Check Defrost Thermostat......................................................22
Defrost Thermostat .................................................................22
Puron® Quick Reference Guide ............................................23
TROUBLESHOOTING CHART........................................24-25
START-UP CHECKLIST .........................................................25
NOTE TO INSTALLER - READ THESE INSTRUCTIONS
CAREFULLY AND COMPLETELY before installing this unit.
Also, make sure the Owner's Manual and Service Instructions are
left with the unit after installation.
SAFETY CONSIDERATIONS
Installation and servicing of air conditioning equipment can be
hazardous due to system pressure and electrical components. 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 working 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 extinguisher
available for all brazing operations.
Book 1 4
PC 101
Catalog No. 565-061
Tab 5a 5a
Single-Package Heat Pump Units
with Puron® (R-410A) Refrigerant
2
Improper installation, adjustment, alteration, service, mainte-
nance, or use can cause explosion, fire, electric shock, or
other occurrences, which could cause serious injury or death
or damage your property. Consult a qualified installer or
service agency for information or assistance. The qualified
installer or agency must use only factory-authorized kits or
accessories when modifying this product.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the product or in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words - DANGER, WARNING, CAU-
TION, and NOTE. Danger identifies the most serious hazards,
which will result in severe personal injury or death. Warning
indicates a condition that could cause serious personal injury or
death. Caution is used to identify unsafe practices, which would
result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability or operation.
1. The power supply (volts, phase, and hertz) must correspond to
that specified on unit rating plate.
2. The electrical supply provided by the utility must be sufficient
to handle load imposed by this unit.
3. This installation must conform with local building codes and
with NEC (National Electrical Code). Refer to provincial and
local plumbing or waste water codes and other applicable local
codes.
Printed in U.S.A.
Form 50JZ-1SI
50JZ024-060
Fig. 1-Unit 50JZ
Pg 1
8-00
C99064
.
Replaces: New
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Table of Contents
Related Manuals for Carrier 50JZ024
Summary of Contents for Carrier 50JZ024
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Page 1: Table Of Contents
50JZ024-060 Single-Package Heat Pump Units with Puron® (R-410A) Refrigerant Visit www.carrier.com Installation, Start-Up and Service Instructions NOTE: Read the entire instruction manual before starting the installation. Index SAFETY CONSIDERATIONS ..........1-2 ..............INTRODUCTION RECEIVING AND INSTALLATION........2-15 Check Equipment.................2 Identify Unit................2 Inspect Shipment...............2 Provide Unit Support..............2... -
Page 2: Introduction
Check all items against shipping list. 1. Remove unit from shipping carton. Leave top shipping skid on Immediately notify the nearest Carrier Air Conditioning office if the unit as a spreader bar to prevent the rigging straps from any item is missing. - Page 3 IN. [MM] "A" 50JZ024 208/230-1-60 135.6 35.02 [889.5] 19.0 [482.6] 18.3 [463.6] 16.0 [406.4] 50JZ030 208/230-1-60,208/230-3-60 145.2 37.02 [940.3] 20.0 [508.0] 19.3 [489.0] 17.6 [447.0] 50JZ036 208/230-1-60,208/230-3-60, 460-3-60 148.8 37.02 [940.3] 20.0 [508] 19.0 [482.6] 16.5 [419.1] Fig. 2—50JZ024-036 Unit Dimensions...
- Page 4 REQUIRED CLEARANCE FOR OPERATION AND SERVICING REQUIRED CLEARANCE TO COMBUSTIBLE MATL. in. [mm] in. [mm] EVAP. COIL ACCESS SIDE..............36.00 [914.0] TOP OF UNIT...................14.00 [355.6] POWER ENTRY SIDE..............36.00 [914.0] DUCT SIDE OF UNIT.................2.00 [50.8] (EXCEPT FOR NEC REQUIREMENTS) SIDE OPPOSITE DUCTS ..............14.00 [355.6] UNIT TOP ..................48.00 [1219.0] BOTTOM OF UNIT ................0.50 [12.7] SIDE OPPOSITE DUCTS ..............36.00 [914.0]...
- Page 5 Supply opening (11" x 16 "-clear) " Long Support 11" Typ. " Short Support Long Support Side Insulated deck pan Return opening (11" X 16 "-clear) 0" 0" 13"* " HVAC unit " base 13"* Roof opening for Gasketing supply duct inner flange* *Gasketing outer flange...
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Page 6: Select And Install Ductwork
914-137" (36"-54") “A” MAXIMUM ALLOWABLE DIFFERENCE (in.) “B” C99065 DETAIL A Fig. 5—Unit Leveling Tolerances SCALE 0.250 OPTIONAL OPTIONAL RETURN SUPPLY TIGHTEN STRAPPING SECURELY WITH TENSION BUCKLE OPENING OPENING INSTALL SAFETY STRAPS TO RIGGING CLEVIS AT 4 RIGGING BRACKETS PLACE RIGGING BRACKET ASSEMBLY IN 4 HAND HOLES AND INSTALL TIE DOWN STRAP AROUND PERIMETER OF UNIT AND THROUGH SPACE IN BRACKET ASSEMBLY... -
Page 7: Provide For Condensate Disposal
Table 1—Physical Data—Unit 50JZ UNIT SIZE NOMINAL CAPACITY (ton) 2 1/2 3-1/2 OPERATING WEIGHT (lb) COMPRESSOR QUANTITY TYPE SCROLL COMPRESSOR REFRIGERANT R-410A REFRIGERANT METERING DEVICE AccuRater® Refrigerant (R-410A) Quantity (lb.) 10.6 12.4 ORIFICE ID (in.) 0.061 0.061 0.067 0.073 0.076 0.088 ORIFICE OD (in.) 2@0.032... -
Page 8: Install Electrical Connections
condensate connection to ensure proper drainage. Make sure that the outlet of the trap is at least 1 in. lower than the drain-pan Failure to follow these precautions could result in damage to condensate connection to prevent the pan from overflowing. Prime the unit being installed: the trap with water. - Page 9 C00097 Fig. 12—Wiring Schematics (208/230-1-60)
- Page 10 C00098 Fig. 13—Wiring Schematics (208/230-3-60)
- Page 11 C00099 Fig. 14—Wiring Schematics (460-3-60)
- Page 12 Table 3—Electrical Data—50JZ VOLTAGE COMPRESSOR ODFM IDFM ELECTRIC HEAT POWER SUPPLY† UNIT 50JZ RANGE V-PH-HZ SIZE NOMINAL KW UNIT MCA MAX FUSE OR CKT BKR MOCP 19.8/19.8 25/25 208/230-1-60 13.5 61.0 0.90 3.8/5.0 18.1/20.8 25.1/28.5 25/30 7.5/10.0 36.1/41.7 47.6/54.6 50/60 22.9/22.9 30/30 3.8/5.0...
- Page 13 LEGEND 452 + 464 + 455 Average Voltage = — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration 1371 — Indoor-Fan Motor — Locked Rotor Amps = 457 — Minimum Circuit Amps Determine maximum deviation from average voltage. MOCP —...
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Page 14: Special Procedures For 208V Operation
electronic leak detector, or liquid-soap solution. If a refrig- TRANSFORMER CONTAINS A MANUAL erant leak is detected, see following Check for Refrigerant RESET OVERCURRENT PROTECTOR Leaks section. IT WILL NOT AUTOMATICALLY RESET c. Inspect all field and factory-wiring connections. Be sure that connections are completed and tight. - Page 15 INDOOR COIL OUTDOOR COIL Bypass Position Metering Position LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Metering Device Arrow indicates direction of flow C00095 1. Hot gas from compressor flows through the 4-way valve and is directed to the indoor coil. It is then condensed and subcooled through the coil circuits and then leaves the indoor coil by way of the ID Accurater in the bypass position to the liquid line.
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Page 16: Defrost Control
/or the physical data table. Refer avoid contact with chassis parts. To select high speed on 460v GE to Carrier Refrigeration Service Techniques Manual, Refrigerants motors, separate the black female quick connect (QC) from the Section. - Page 17 Table 4—Wet Coil Air Delivery Unit 50JZ 024-060 (Deduct 10% for 208v)* EXTERNAL STATIC PRESSURE (IN. WG) UNIT MOTOR SPEED Watts Watts Watts High Watts Watts 1202 1170 1079 Watts High 1174 Watts 1374 1290 1205 1116 1020 Watts 1500 1408 1301 1190...
- Page 18 (030) 60 Hz COOLING CHARGING CHART (024) 60 Hz COOLING CHARGING CHART For Use with Units Using R410a Refrigerant For use with units using R410a Refrigerant SUCTION LINE TEMPERATURE (DEG. C) OUTDOOR TEMP SUCTION LINE TEMPERATURE (DEG. C) OUTDOOR TEMP 1173 1152 1104...
- Page 19 (048) 60Hz COOLING CHARGING CHART (060) 60 Hz COOLING CHARGING CHART For use with units using R410a Refrigerant OUTDOOR For use with units using R410a Refrigerant TEMP SUCTION LINE TEMPERATURE (DEG. C) SUCTION LINE TEMPERATURE (DEG. C) OUTDOOR TEMP 1173 1173 1104 1104...
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Page 20: Maintenance
MAINTENANCE To ensure continuing high performance, and to minimize the Disconnect and tag electrical power to the unit before possibility of premature equipment failure, periodic maintenance cleaning and lubricating the blower motor and wheel. Failure must be performed on this equipment. This heat pump unit should to adhere to this warning could cause personal injury or death. -
Page 21: Refrigerant System
REFRIGERANT CIRCUIT — Inspect all refrigerant tubing con- charge so that pressure gauges read 0 psi. Never open system nections and the unit base for oil accumulation annually. Detecting without breaking vacuum with dry nitrogen. oil generally indicates a refrigerant leak. HIGH-PRESSURE SWITCH —... -
Page 22: System Information
Exposure, even if immediately cleaned up, may cause embrittle- CHECK DEFROST THERMOSTAT — There is a liquid header ment (leading to cracking) to occur in one year or more. When with a brass distributor and feeder tube going into outdoor coil. At performing any service that may risk exposure of compressor oil to the end of 1 of the feeder tubes, there is a 3/8-in. -
Page 23: Puron® Quick Reference Guide
HEAT PUMP WITH PURON® (R-410A)—QUICK REFERENCE GUIDE Puron refrigerant operates at 50%-70% higher pressures than R-22. Be sure that servicing equipment and replacement components are designed to operate with Puron. Puron refrigerant cylinders are rose colored. • Puron refrigerant cylinders manufactured prior to March 1, 1999, have a dip tube that allows liquid to flow out of cylinder in upright position. -
Page 24: Troubleshooting Chart
Troubleshooting Chart SYMPTOM CAUSE REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective thermostat, contactor, transformer, con- trol relay, defrost board, or high pressure or loss- Replace component of-charge/low pressure switch Insufficient line voltage Determine cause and correct Compressor and outdoor fan will not start... -
Page 25: Start-Up Checklist
Troubleshooting Chart (cont’d) SYMPTOM CAUSE REMEDY Suction pressure too low (Cool) Dirty air filter Replace filter Move timer on control board to 30 minutes be- (Heat) Outdoor coil frosted tween defrost cycles Low refrigerant charge Check for leaks, repair and recharge Metering device or low side restricted Remove source of restriction Increase air quantity... -
Page 28: Manufacturer Reserves The Right To Discontinue, Or Change At Any Time, Specifications Or Designs Without Notice And Without Incurring Obligations
Copyright 2000 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 50jz-1si Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 565-061 Printed in U.S.A.
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