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Quality Assurance
Certificate Reg. No:
04 100 950420
Subject to change without notice
Manufacturing point: Jeddah, Saudi Arabia
Nearest port of embarkation: Jeddah Islamic port
Product classification: Commercial
Note: This manual discusses the Mechanical Installation of this unit, Start-up Procedures, Operating Sequences and
Service Instructions.
Read thoroughly the entire installation instruction manual before starting the unit installation, to get familiarized with all
steps and to identify if any additional reference materials as required.
The 50TJM units are single side discharge rooftop cooling unit utilizing electric heat as an option. Units are pre-wired,
pre-charged with R-410A refrigerant, and tested at the factory. These units can be placed on the side of a building or
can be placed on a roof without roof curbs. Each unit is designed to occupy a minimal space. Piping and drain
connections are readily accessible.
For a complete list of options and accessories, refer to the Product Data Catalog.
Contact your local Carrier representative for additional reference materials.
Installation, Operation and Maintenance Instructions
50TJM – 60Hz
Nominal Cooling Capacity 15 - 28 Tons
HFC R - 410A Refrigerant
Page 1
Package Rooftop Units – 60Hz
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Table of Contents
Related Manuals for United Technologies Carrier 50TJM
Summary of Contents for United Technologies Carrier 50TJM
- Page 1 Package Rooftop Units – 60Hz Quality Assurance Certificate Reg. No: 04 100 950420 Installation, Operation and Maintenance Instructions Subject to change without notice Manufacturing point: Jeddah, Saudi Arabia Nearest port of embarkation: Jeddah Islamic port Product classification: Commercial 50TJM – 60Hz Nominal Cooling Capacity 15 - 28 Tons HFC R - 410A Refrigerant Note: This manual discusses the Mechanical Installation of this unit, Start-up Procedures, Operating Sequences and...
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Page 2: Table Of Contents
Table of Contents 1.0 – SAFETY CONSIDERATIONS ....................... 3 1.1 – General ..........................3 1.2 – Installation Safety Considerations ..................3 1.3 – Warranty ..........................3 Physical Data ............................5 Unit Dimensional Drawing......................6 – 7 2.0 – INSTALLATION ..........................8 2.1 –... -
Page 3: Safety Considerations
1 – SAFETY CONSIDERATIONS 1.1 – General Improper installation, adjustment, alteration, service, maintenance or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer; service agency must use factory-authorized kits or accessories when modifying this product. -
Page 4: Electric Shock Hazard
WARNING CAUTION ELECTRIC SHOCK HAZARD CUT HAZARD Failure to follow this warning could cause Failure to follow this warning could cause personal injury or death. personal injury. Before performing service or maintenance Sheet metal parts may have sharp edges or operations on unit, always turn off main burrs. -
Page 5: Physical Data
Physical Data Table - 1 50TJM Unit Physical Data (60Hz) (English) Unit 50TJM Size Unit Dimensions Page - 6 (Fig -1) Page - 7 (Fig -2) Unit Operation Weight Page - 6 (Fig -1) Page - 7 (Fig -2) Refrigeration System 2 / Scroll Compressor No. -
Page 6: Unit Dimensional Drawing
UNIT DIMENSIONAL DRAWING: 50TJM - 18 and 50TJM - 24 (Fig - 1) SHIPPING DIMENSIONS (mm) CORNER WEIGHT (Kg) CENTER OF GRAVITY (mm) UNIT LENGTH WIDTH DEPTH TOTAL 50TJM - 18 2440 2235 1375 1050 1050 50TJM - 24 NOTES: 1. - Page 7 UNIT DIMENSIONAL DRAWING: 50TJM - 28 and 50TJM - 34 (Fig - 2) SHIPPING DIMENSIONS (mm) CORNER WEIGHT (Kg) CENTER OF GRAVITY (mm) UNIT LENGTH WIDTH DEPTH TOTAL 1125 50TJM - 28 3200 2485 1400 1350 1160 1150 50TJM - 34 NOTES: 1.
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Page 8: Installation
2 – INSTALLATION 2.1 – Jobsite Survey Complete the following checks before installation. 1. Consult local building codes or the U.S.A. National Electrical Code (Ref: ANSI/NFPA 70, [American National Standards Institute/National Fire Protection Association], latest revision) for special installation requirements. 2. -
Page 9: Positioning And Clearance
SHIPPING DIMENSIONS SHIPPING UNIT DIMENSIONS (mm) UNIT WEIGHT UNIT (mm) WEIGHT LENGTH WIDTH DEPTH GROSS (Kg) LENGTH WIDTH DEPTH NET(Kg) 50TJM - 18 2440 2235 1375 2440 2182 1348 50TJM - 24 2440 2235 1375 2440 2182 1348 50TJM - 28 3200 2485 1400... -
Page 10: Trap Condensate Drain
2.7 – Trap Condensate Drain See Fig. 5, Fig.1 and Fig. 2 for drain pipe location. Trap should be deep enough to offset the maximum unit static difference. Fig. 5 shows the recommended trap sizing. Fig. 5 Condensate Drain Details 2.8 –... -
Page 11: Electrical Data
Electrical Data Table - 3 50TJM 18 - 34 Compressor Electric Heater No.1 No.2 MCA MOCP ◊ Power Supply Unit Size Voltage Voltage V / Ph / Hz RLA LRA LRA Qty HP FLA Appl. KW 230 / 3 / 60 23.2 29.5 11.0... -
Page 12: Electrical Resistance Heater Data
Electric Resistance Heater Data Table - 4 Accessory Heater Part Number 230V 400V UNIT 50TJM Heater Element P.N. Casing P.N. Heater Element P. N. Casing P.N. Complete Kit P.N. Complete Kit P.N. ( 2 Per Kit ) ( 1 Per Kit ) ( 2 Per Kit ) ( 1 Per Kit ) 50TJ600201... -
Page 13: Typical Wiring Schematic
Fig:- 6 Page 13... - Page 14 Fig:- 7 Page 14...
- Page 15 Fig:- 8 Page 15...
- Page 16 Fig:- 9 Page 16...
- Page 17 Fig:- 10 Page 17...
- Page 18 Fig:- 11 Page 18...
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Page 19: Start-Up Instructions
3 – START-UP INSTRUCTIONS PRIOR to unit start-up use the following instructions and start-up checklist provided on the last page . 3.1– Unit Preparation Check that unit has been installed in accordance with these installation instructions and all applicable codes. 3.2 –... -
Page 20: Condenser Fans And Motors
3.7– Condenser Fans and Motors Fans and motors are factory set. Refer to Condenser-Fan Adjustment Section as required. 3.8– Return – Air Filters Check that correct filters are installed in filter tracks. See Table 1 “Physical data”. Do not operate unit without return air filters. -
Page 21: Evaporator Fan Performance Adjustment
4.3 – Evaporator Fan Performance Adjustment NOTE: To remove belts only, follow Steps 1, 2 & 6. Fan motor pulleys are factory set speed shown in Table 6. To change fan speeds: 1. Shut off unit power supply. 2. Loosen belt by loosening fan motor mounting plate nuts. Slide the Motor and remove belt. 3. -
Page 22: Refrigerant Charge
4.7 – 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 Reclamation section for charging methods and procedures. Unit panels must be in place when unit is operating during charging procedure. NOTE: Do not use recycled refrigerant as it may contain contaminants. -
Page 23: Fan Performance Table
Fan Performance Table - 7 Unit 50TJM - 18 - 15 Tons - 230V and 400V - 60Hz - (Standard Motor) Available External Static Pressure (in. wg) Air flow Rate (CFM) 4000 1.25 1.38 1.52 1.68 1.82 2.02 2.14 2.36 2.47 2.73 4500... - Page 24 Fan Performance Table - 7(Continued) Unit 50TJM - 24 - 19 Tons - 230V and 400V - 60Hz - (Standard Motor) Available External Static Pressure (in. wg) Air flow Rate (CFM) 5000 1.47 1.66 1.72 1.95 1.98 2.25 2.26 2.56 2.55 2.89 5500...
- Page 25 Fan Performance Table - 7(Continued) Unit 50TJM - 28 - 23 Tons - 230V and 400V - 60Hz - (Standard Motor) Available External Static Pressure (in. wg) Air flow Rate (CFM) 5000 1.10 1.25 1.32 1.50 1.56 1.77 1.83 2.07 2.11 2.39 5500...
- Page 26 Fan Performance Table - 7(Continued) Unit 50TJM - 34 - 28 Tons - 230V and 400V - 60Hz - (Standard Motor) Available External Static Pressure (in. wg) Air flow Rate (CFM) 7000 2.72 3.13 3.03 3.49 3.35 3.86 3.70 4.27 4.05 4.67 7500...
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Page 27: Charging Chart
Charging Chart Charging Chart 50TJM-18 - Fig 14 Circuit #1 All outdoor fans must be operating Add charge upper curve above Reduce charge below lower curve Liquid Pressure (PSIG) Fig - 14 Charging Chart for 50TJM - 18 (Circuit #1) Charging Chart 50TJM-18 - Fig 15 Circuit #2... - Page 28 Charging Chart (Continued) Charging Chart 50TJM-24 - Fig 16 Both Circuits All outdoor fans must be operating Add charge above upper curve Reduce charge below lower curve Liquid Pressure (PSIG) Fig - 16 Charging Chart for 50TJM - 24 Charging Chart 50TJM-28 - Fig 17 Both Circuits All outdoor fans must be operating...
- Page 29 Charging Chart (Continued) CHARGING CHART 50TJM34 - Fig 18 Both Circuits All outdoor fans must be operating Add charge above upper curve Reduce charge below lower curve Liquid Pressure (PSIG) Fig - 18 Charging Chart for 50TJM - 34 Page 29...
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Page 30: Troubleshooting
Troubleshooting Guide Table 8 — Cooling Service Analysis PROBLEM CAUSE REMEDY Compressor and condenser fan will not Power failure. Call power company. start. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, or control Replace component. -
Page 31: Start-Up Checklist
START-UP CHECKLIST (Remove and Store in Job File) I. PRELIMINARY INFORMATION MODEL NO: DATE: SERIAL NO: TECHNICIAN: II. PRE-START-UP (Insert checkmark in box as each item is completed) 1) ALL PACKING MATERIALS HAVE BEEN REMOVED FROM THE UNIT. 2) VERIFY THAT UNIT INSTALLATION IS LEVEL. 3) CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTION. - Page 32 Manufacturer reserves the rights to discontinue or change at any time, specifications or designs without notice and without incurring any obligations Supersedes Version: 50TJM-IOM01 Catalog Number: 50TJM-IOM02 Page 32 Effective Date: 24-12-2014 Phase: 60Hz...
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