Heatcraft Refrigeration Products H-IM-72A User Manual download pdf (Page 2)

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

1 2 3 4 5 6 7 ... 35 36

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Heatcraft Refrigeration Products H-IM-72A User Manual Page 2

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