Emerson AE4-1287 R7 User Manual

1
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
AE4-1287 R7
Application Engineering
BULLETIN
Copeland Discus
™
Demand Cooling
™
AE4-1287 R7 December 2013
Application Engineering
BULLETIN
TABLE OF CONTENTS
Section Page Section Page
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
Operating Range .....................................................4
Demand Cooling System Design .............................4
Demand Cooling™ Compressors ............................5
Condenser Sizing ....................................................5
Demand Cooling System Components ...................5
System Information ..................................................6
Demand Cooling with Discus Compressor
Unloading ..............................................................6
4D and 6D Unloading with Demand Cooling ...........6
3D Copeland Discus Digital™ with Demand
Cooling ..................................................................6
Performance Adjustment Factors ............................7
Demand Cooling Specifi cations ...............................7
Figures and Tables
Demand Cooling System .........................................7
Low Temperature Operating Envelope with
Demand Cooling for R-407A, R-407C and
R-407F..................................................................8
Low Temperature Operating Envelope for R-22 at
65°F Return Gas (with Head Fan) .........................8
Demand Cooling System Diagram ..........................9
Demand Cooling Wiring Schematics ............... 10-12
Demand Cooling Operating Setpoints and
Control Actions ....................................................13
Demand Cooling Kit Part Numbers .......................13
Demand Cooling Evaporator Capacity Adjustment
Factors for HCFC-22 ...........................................14
Demand Cooling Evaporator Mass Flow
Adjustment Factors for HCFC-22 ........................14
Appendix - Demand Cooling Diagnostics ...... 15-18

Emerson AE4-1287 R7 Specifications

General

Brand	Emerson
Model	AE4-1287 R7
Category	Refrigerator
Language	English