Heatcraft Refrigeration Products H-IM-72A, Installation, Operating And Maintenance Manual, Page: 2 / 36

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© Heatcraft 1999
Table of Contents
Introduction
Inspection
Unit Designation
Model Definition ................................................................................ 3
System Warranty
Rigging
Location of Equipment - INDOOR
Clearances
Floor & Foundation Requirements
Vibration Mounts
Figure 1. Vibration Pad & Spring Isolator
Figure 2. Vibration Pad Locations ..................................................... 4
Location of Equipment - OUTDOOR
Ground Mounting
Roof Mounting
Unit Vibration Isolation
Compressor Spring Vibration Isolators
Figure 3. Spring Mount ..................................................................... 5
Unit Access
Vertical Clearance
Lateral Clearance
Decorative Fences
Units in Pits
Multiple Units .................................................................................... 6
Ventilation Requirements
Electrical
Refrigerant Piping
Suction P-traps
Figure 4. P-trap requirements
Figure 5. P-trap construction ............................................................. 7
Figure 6. Double Suction Risers
Figure 7. Inverted Trap
Refrigerant Line Insulation
Refrigerant Line Support
Figure 8. Pipe Support ...................................................................... 8
Expansion Loops
Figure 9. Offsets
Table 1. Expansion Chart ................................................................. 9
Table 2. Pressure Loss of Liquid Refrigerants
Table 3. Equivalent Feet of Pipe ..................................................... 10
Table 4. Weight of Refrigerants in Copper Lines During Operation . 11
Table 5A. Recommended Line Sizes for R-404A and R507 ........... 12
Table 5B. Recommended Line Sizes for
R-404A and R507 (continued) .................................................... 13
Table 6A. Recommended Line Sizes for R-22 ................................ 14
Table 6B. Recommended Line Sizes for R-22 (continued) .............. 15
Table 7. Recommended Remote Condenser Line Sizes ................. 16
Leak Checking, Evacuation, and Start-up ....................................... 17
Refrigerant Distribution
Off cycle
Electric defrost
Priority I hot gas defrost
Head pressure control system ........................................................ 18
Electronic control system
System Balancing
System Superheat (NOTE: Superheat is not preset at factory)
Evaporator Superheat
Alternative Superheat Method ........................................................ 19
Compressors
Copeland Compressors
Table 8. 3D/4D/6D Solid State Modules
Table 9. Typical Voltage Ranges
Table 10. Unloader Factors ............................................................. 20
Table 11. Oil Safety Switch
Table 12. Oil Charges
Approved Copeland Lubricants
Carlyle Compressors
Approved Carlyle Lubricants
Oil Pressure
Table 13. O6D/E Oil Pressure History ............................................. 21
Table 14. Oil Safety Switch
Table 15. Part Load Performance Mult.
Table 16. Required Differential Pressure
Three-Phase Voltage Monitor ......................................................... 22
Sight Glass & Moisture Indicator
Figure 10. Sight Glass
Safety Relief Devices
Figure 11. Direct Type Relief Valves
Figure 12. 3-way Relief Valve ......................................................... 23
Table 17. Henry Relief Valve Capacity Ratings
Table 18. Discharge Piping Table .................................................... 24
Series P100 Pressure Control
Figure 13. P100 Pressure Controls
Auto Reset Models
Manual Reset Models
Liquid Level Switch
S-9400 Level Switch Series
Table 19. Level Switch Table
Figure 14. S-9400
S-9400 Operation ........................................................................... 25
Module Replacement
Figure 15. Module Replacement
Oil Control
Low Pressure Oil System
Figure 16. Low Pressure Oil System
Oil Separators ................................................................................. 26
Table 20. AC & R Models
Temprite Models
Temprite Valve Adjustment
Table 21. Temprite Models
Figure 17. Temprite Oil System
Oil Level Regulators ....................................................................... 27
Table 22. A C & R Model Regulators
Troubleshooting Oil System
Liquid Filter-Driers & Suction Filters
Table 23. Sporlan Valve Co.
Table 24. Alco Controls ................................................................... 28
Suction Filter
Compressor Motor Burnout Clean-up Procedure
Sporlan Valve Company ................................................................. 29
Superior Valve Company
Table 25. Type F Filter
Table 26. Type DF (for clean-up)
Alco Controls
Table 27. Type AF Filter
Table 28. Type AFD (for clean-up)
Head Pressure Control
Valve Functions .............................................................................. 30
Liquid Drain Control Method
Recommended Valve Settings
Table 29. Pressure Range, Set point & Change per Turn
Field Adjustment
Hot Gas Bypass Regulator Adjustment
Sporlan Valve Company
Valve Setting and Adjustment ......................................................... 31
Alco Controls
Valve Setting and Adjustment
Control Settings
Table 30. Control settings for R404A (507)
Table 31. Control settings for R22
Low Pressure Switch Setting for RMCC .......................................... 32
General Maintenance Schedule ...................................................... 33
SERVICE DIAGNOSIS CHART ................................................. 34-35
Service Record
System Reference Data .................................................................. 36