Emerson Copeland Scroll Digital ZPD34 User Manual

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© 2015 Emerson Climate Technologies, Inc. All rights reserved.
AE4-1395 R5
3 to 15 Ton Copeland Scroll Digital
™
Compressors for Air Conditioning
AE4-1395 R5
April 2016
Safety
Safety Instructions .................................................. 2
Safety Icon Explanation ......................................... 2
Instructions Pertaining to Risk of
Electrical Shock, Fire, or Injury to Persons ............ 3
Safety Statements .................................................. 3
Introduction .............................................................. 4
Nomenclature ........................................................ 4
Digital Compressor Operation ............................... 4
How It Works ........................................................ 4
Application Considerations
Operating Envelope ............................................... 4
Solenoid Valve and Coil ......................................... 5
Pressure Fluctuations ............................................ 5
Piping ..................................................................... 5
Start Up and Shut Down ........................................ 5
Compressor Cycling ............................................... 5
Sound Characteristics ............................................ 5
Internal Pressure Relief (IPR) Valve ....................... 5
High Pressure Control ............................................ 5
Low Pressure Control ............................................. 5
Scroll Temperature Protection ................................ 6
Crankcase Heaters ................................................ 6
Oil Type and Oil Removal ...................................... 6
Power Factor .......................................................... 6
Tandem Applications .............................................. 6
Modulation Control ................................................. 7
Application Tests
 OilLevelVerication ............................................... 7
Excessive Liquid Floodback Tests .......................... 7
Operating Envelope Tests ...................................... 7
Digital Compressor Retrot Applications
 ReasonstoRetrot ................................................ 7
 RetrotApplicationsToAvoid ................................. 8
Performance Modeling ........................................... 8
 SystemModications ............................................. 8
Compressor Selection & Change-Out .................. 8
Refrigerant Flow Control ...................................... 9
Evaporator Air Flow .............................................. 9
Condenser Air Flow .............................................. 9
Modulation Control ............................................... 9
Assembly Line Procedures
Modulation Valve Brazing Procedure ...................... 9
Pressure Testing ..................................................... 9
Service Procedures
Modulation Troubleshooting ................................. 10
Modulation Valve Replacement
Procedure ............................................................. 10
Scroll Compressor Functional Check ................... 12
Figures & Tables
Digital Cycle Example .......................................... 13
Digital Scroll Cross Sectional View ...................... 13
Digital Scroll Cross Sectional View ...................... 14
Compressor Capacity Graph ................................ 15
Discharge Thermistors ......................................... 15
Modulation Valve Piping ....................................... 16
Tandem ................................................................ 16
Modulation Troubleshooting ................................. 17
Copeland Scroll Digital Family Features .............. 18
Refrigerant Charge Limits .................................... 18
Torque Values ....................................................... 18
Compressor Accessories ..................................... 19
TABLE OF CONTENTS
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Emerson Copeland Scroll Digital ZPD34 Specifications

General

Brand	Emerson
Model	Copeland Scroll Digital ZPD34
Category	Air Compressor
Language	English