Heatcraft H-IM-CU Installation And Operation Manual

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Installation and

Operations Manual

H-IM-CU

February 2023

Part No. 25008101

Replaces February 2022

Condensing

Units

General Safety Information..........................................................................2

Inspection ..........................................................................................................2

Warranty Statement .......................................................................................2

DOE Walk-In Cooler Freezer AWEF Set Points .......................................2

Space and Location Requirements ..........................................................3

Condensing Unit Rigging and Mounting ...............................................4

Remote and Water Cooled Condensing Units Requirements .........5

City & Tower Water Connections ................................................................5

Head Pressure Control ...................................................................................6

Phase Loss Monitor .........................................................................................7

Polyol Ester Lubricants ..................................................................................7

Refrigerant Piping ...........................................................................................8

Suction Lines .....................................................................................................8

Liquid Lines .......................................................................................................9

Unit Cooler Piping ...........................................................................................9

Line Sizing .................................................................................................10-17

Check System Pressure ............................................................................... 18

Evacuation and Leak Detection .............................................................. 18

Refrigerant Charging Instructions .......................................................... 18

Refrigerant Flooding Charge ..............................................................19-22

Field Wiring ..................................................................................................... 23

Check Out and Start Up ............................................................................. 23

Operational Check Out ............................................................................... 24

General Sequence of Operation ............................................................. 25

Refrigeration Cycle ....................................................................................... 25

Defrost Cycle .................................................................................................. 25

Copeland Demand Cooling ...................................................................... 25

Electric Defrost Troubleshooting ............................................................ 26

Variable Speed Motor with Orbus Controller ............................................ 26

System Troubleshooting Guide ............................................................... 28

Pressure Fan Cycling Recommended Settings .................................. 29

InterLink™ Replacement Parts ........................................................................ 29

Preventive Maintenance Guidelines ...................................................... 30

Typical Wiring Diagrams ......................................................................31-35

H-IM-CU-0223 | Version 008

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Page 1: Table Of Contents
Electric Defrost Troubleshooting ............26 Variable Speed Motor with Orbus Controller ..........26 System Troubleshooting Guide ............... 28 Pressure Fan Cycling Recommended Settings ........29 InterLink™ Replacement Parts ................ 29 Preventive Maintenance Guidelines ............30 Typical Wiring Diagrams ..............31-35 H-IM-CU-0223 | Version 008...
Page 2: General Safety Information
Disclaimer: This communication is provided for informational purposes only must submit a proof-of-purchase of a compressor and supply it to Heatcraft and is based on information that is subject to change and interpretation.
Page 3: Space And Location Requirements
Space and Location Requirements for Air Cooled Condensing Units and Remote Condensers The most important consideration which must be taken into account when Another consideration which must be taken is that the unit should be deciding upon the location of air-cooled equipment is the provision for a mounted away from noise sensitive spaces and must have adequate support supply of ambient air to the condenser, and removal of heated air from the to avoid vibration and noise transmission into the building.
Page 4: Condensing Unit Rigging And Mounting
Condensing Unit Rigging and Mounting Figure 3. Spring Mount Figure 2. Spring Mount Rigging holes are provided on all units. Caution should be exercised when moving these units. To prevent damage to the unit housing during rigging, cables or chains used must be held apart by spacer bars. The mounting platform or base should be level and located so as to permit free access of supply air.
Page 5: Remote And Water Cooled Condensing Units Requirements
Requirements for Remote and Water Cooled Condensing Units General Installation Water Regulating Valve The indoor compressor units are designed to be used with a remote Using this control on the water cooled condensing units, the head pressure condenser. The water cooled units are similar, except that they have an can be maintained by adjusting the ow of water through the condenser integral water cooled condenser.
Page 6: Head Pressure Control
Head Pressure Control Several types of head pressure control systems are available on condensing units: A. Dual Valve System. (See section on operation and adjustment.) B. Single Valve System. (No adjustments possible for standard non- adjustable version, See section on operation and adjustment of adjustable version.) C.
Page 7: Phase Loss Monitor
Phase Loss Monitor When phase sequence is correct and full line voltage is present on all three phases, the relay is energized as the normal condition indicator light glows. If compressor fails to operate and the normal condition indicator light on the phase monitor does not glow, then the supplied electrical current is not in phase with the monitor.
Page 8: Recommended Refrigerant Piping Practices
Recommended Refrigerant Piping Practices Refrigerant Pipe Support The system as supplied by Heatcraft Refrigeration Products, was thoroughly 1. Normally, any straight run of tubing must be supported in at least two cleaned and dehydrated at the factory. Foreign matter may enter the system locations near each end of the run.
Page 9: Liquid Lines
Liquid Lines Liquid lines should be sized for a minimum pressure drop to prevent on high pressure systems. The amount of subcooling will depend on the “ ashing”. Flashing in the liquid lines would create additional pressure drop design and size of the heat exchanger and on the operating suction and and poor expansion valve operation.
Page 10: Line Sizing
Line Sizing The following Tables 5-8 indicate liquid lines and suction lines for all When determining the refrigerant line length, be sure to add an allowance condensing units for R-404A, R-507, R-407A/C/F, R-448A and R-449A for ttings. See Table 4. Total equivalent length of refrigerant lines is the sum of the actual linear footage and the allowance for ttings.
Page 11 Table 5. Recommended Remote Condenser Line Sizes R-407A/C/F, R-448A & R-449A R-507 & R-404A Net Evaporator Total Equiv. Liquid Line Cond. to Liquid Line Cond. to Capacity Length Discharge Line (O.D.) Discharge Line (O.D.) Receiver (O.D.) Receiver (O.D.) 3,000 6,000 9,000 12,000 18,000...
Page 12 Table 6. Recommended Line Sizes for R-404A, R-507* Suction Line Size Maximum Suction Line Riser Size Suction Temperature R-404A /507 Capacity Suction Temperature BTUH +40˚F +20˚F +10˚F Equivalent Lengths Equivalent Lengths Equivalent Lengths 100' 150' 100' 150' 100' 150' 1,000 3,000 4,000 6,000...
Page 13 Table 6a. Recommended Line Sizes for R-404A, R-507* (cont.) Suction Line Size Liquid Line Size Suction Temperature Receiver to Expansion Capacity Valve Equivalent Lengths -10 ˚F -20˚F -30˚F -40˚F BTUH Equivalent Lengths Equivalent Lengths Equivalent Lengths Equivalent Lengths 100' 150' 100' 150' 100'...
Page 14 Table 7. Recommended Line Sizes for R-407A/R-407C/R-407F* Suction Line Size Maximum Suction Line Riser Size Suction Temperature R-407A/C/F Suction Temperature Capacity +40˚F +20˚F +10˚F BTUH Equivalent Lengths Equivalent Lengths Equivalent Lengths 100' 150' 100' 150' 100' 150' 1,000 3,000 4,000 6,000 9,000 1-1/8...
Page 15 Table 7a. Recommended Line Sizes for R-407A/R-407C/R-407F* (cont.) Suction Line Size Liquid Line Size Suction Temperature Receiver to Expansion Capacity -10˚F -20˚F -30˚F -40˚F Valve Equivalent Lengths BTUH Equivalent Lengths Equivalent Lengths Equivalent Lengths Equivalent Lengths 100' 150' 100' 150' 100' 150' 100'...
Page 16 Table 8. Recommended Line Sizes for R-448A/R-449A* Maximum Suction Line Riser Size Suction Line Size Suction Temperature R-448A/R-449A Suction Temperature Capacity +40˚F +20˚F +10˚F BTUH Equivalent Lengths Equivalent Lengths Equivalent Lengths 100' 150' 100' 150' 100' 150' 1,000 3,000 4,000 6,000 9,000 12,000...
Page 17 Table 8a. Recommended Line Sizes for R-448A/R-449A* (cont.) Suction Line Size Liquid Line Size Suction Temperature Receiver to Expansion Capacity -10˚F -20˚F -30˚F -40˚F Valve Equivalent Lengths BTUH Equivalent Lengths Equivalent Lengths Equivalent Lengths Equivalent Lengths 100' 150' 100' 150' 100' 150' 100'...
Page 18: Check System Pressure
Check System Pressure Refrigerant Charging Instructions Safe discharge of dry air or nitrogen holding charge is required prior to 1. A liquid line lter drier should be installed between the refrigerant supply installing eld mounted components, such as lter driers, or making piping container and the system access point.
Page 19: Refrigerant Flooding Charge
Refrigerant Flooding Charge These charges are approximate and should not be used as absolute rules The following tables summarize the coil charges for High Side products (CU for charging the system. and ACC). To determine total system charge, the liquid line and unit cooler must be Winter charge assumes a 90% ooded coil;...
Page 20 Table 10. HCU 1 and 2 Fan standard chassis 3 22hp R-404A (lbs) RTPF Group Model Summer Winter Additional #C*0050M@ACD 11.5 #C*0051M@ACD 11.5 #C*0075M@ACD 15.5 #C*0076M@ACD 15.0 Discus Medium Temp #C*0080M@ACD 19.5 11.0 #C*0100M@ACD 19.5 11.0 #C*0120M@ACD 19.5 11.0 #C*0150M@ACD 12.0 27.0 15.0...
Page 21 Table 11. (D)VCU 12-110hp R-404A (lbs) RTPF Group Model Summer Winter Additional #CV0150M^ACD 20.5 44.5 24.0 #CV0200M^ACD 20.0 44.5 24.5 #CV0250M^ACD 20.0 44.5 24.5 #CV0260M^ACD 15.0 33.5 18.5 #CV0300M^ACD 20.0 44.5 24.5 #CV0350M^ACD 21.5 49.5 28.0 Discus #CV0400M^ACD 38.0 86.0 48.0 Medium Temp #CV0151M^ACD...
Page 22 Table 12. (D)VCU 12-110hp (cont.) R-404A (lbs) RTPF Group Model Summer Winter Additional #CM0062L^ACD 30.0 58.0 28.0 #CM0077L^ACD 39.5 77.5 38.0 #CM0092L^ACD 39.0 77.5 38.5 #CM0102L^ACD 38.5 77.5 39.0 Mohave #CM0122L^ACD 38.5 77.5 39.0 Low Temp #CM0152L^ACD 38.0 77.5 39.5 #CM0222L^ACD 37.5 77.5...
Page 23: Field Wiring
Field Wiring Check Out and Start Up After the installation has been completed, the following points should be WARNING: covered before the system is placed in operation: All wiring must be done in accordance with applicable codes and local Check all electrical and refrigerant connections. ordinances.
Page 24: Operational Check Out
Operational Check Out System Balancing - Compressor Superheat After the system has been charged and has operated for at least two hours at normal operating conditions without any indication of malfunction, it should IMPORTANT: be allowed to operate overnight on automatic controls. Then a thorough In order to obtain the maximum capacity from a system, and to ensure recheck of the entire system operation should be made as follows: trouble-free operation, it is necessary to balance each and every system.
Page 25: General Sequence Of Operation
General Sequence of Operation The Copeland Demand Cooling System It is required for all single stage R-22, R-407A/C/F or R-448A/R-449-A Refrigeration Cycle applications with saturated suction temperatures below 0˚F. 1. Power is supplied to the timer at terminals “1” and “N”. The Demand Cooling module uses the signal of a discharge head temperature 2.
Page 26: Electric Defrost Troubleshooting
Electric Defrost Troubleshooting Status LED The electric defrost units are relatively simple and trouble-free in operation: • Control board status is indicated by a multi-color LED • On startup, LED cycles from red to yellow to green Timer • Blinking green means everything ok If the system does not go through its proper sequence , check timer •...
Page 27 ORBUS™ CONTROL BOARD Status LED Jumpers Sensor Output 24 VAC...
Page 28: System Troubleshooting Guide
2. Low ambient kit not installed. 2. Install low ambient kit (low pressure switch settings can be lowered cold weather. temporarily to allow system to start) (Low pressure switch 3. Review " low suction pressure possible causes". not closing 4. Call Heatcraft tech support.
Page 29: Pressure Fan Cycling Recommended Settings
InterLink™ Comercial Refrigeration Parts is your link to a complete line of dependable and certi ed commercial refrigeration parts, accessories and innovative electronic controls for all Heatcraft Refrigeration Products (HRP) brands - including Bohn, Larkin, Climate Control and Chandler. At InterLink, we provide our wholesalers with a comprehensive selection of product solutions and innovative technologies for the installed customer base.
Page 30: Preventive Maintenance Guidelines
Preventive Maintenance Guidelines Air-Cooled Condensing Units Quarterly Annually 1) Visually inspect unit • Look for signs of oil stains on interconnection piping and condenser 7) In addition to quarterly and semiannual maintenance checks, submit an coil. Pay close attention to areas around solder joints, building oil sample for analysis penetrations and pipe clamps.
Page 31: Typical Wiring Diagrams
C/L OF HOLES----------------- 5. WN------WIRE NUT INFORMATION WHICH IS THE PROP 12 TO 36---------------+.38/-.00 CONNECTIONS-------±13 ANGLES--------------------------±2° PROJECTION HEATCRAFT REFRIGERATION PRO OVER 36---------------+.75/-.00 FIN QUANTITY--------±3% FORMED DIMENSIONS =FACTORY WIRING SUPPLIED ONLY ON A PROPRIETY B BOW (ANY DIRECTION) 0 TO 36---------------------------±.03...
Page 32 Diagram 9. Typical Wiring Diagram for Single Evaporator with and without Defrost Timer Diagram 10. Typical Wiring Diagram for Single Evaporator with Defrost Timer Only...
Page 33 Diagram 11. Typical Wiring Diagram for Multiple Evaporators with Defrost Timer Only Diagram 12. Typical Wiring Diagram for Single Evaporator / Single Phase Defrost and Evaporator Fan Contactors...
Page 34 Diagram 13. Typical Wiring Diagram for Single Evaporator Defrost and Evaporator Fan Contactors Diagram 14. Typical Wiring Diagram for Multiple Evaporators with Evaporator Fan Contactors/without Heater Limit Defrost...
Page 35 Diagram 15. Typical Wiring Diagram for Multiple Evaporators with Heater Limit Defrost and Evaporator Fan Contactors Diagram 16. Typical Wiring Diagram for Multiple Evaporators Defrost and Evaporator Fan Contactors with Unit Cooler Holdout Relay...
Page 36 Since product improvement is a continuing e ort, we reserve the right to make changes in speci cations without notice. The name behind the brands you trust. ™ CLIMATE CONTROL Commercial Refrigeration Parts H-IM-CU-0223...

Heatcraft H-IM-CU Installation And Operation Manual

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