Heatcraft Refrigeration Products none installation and operation guide Table of Contents, August

Air-Cooled Condenser

Installation & Operation

Bulletin No. H-IM-90 August 2008 Part Number 25007301

Replaces H-IM-90, March 2006

Air-Cooled

Condensers

Installation and

Operation Guide

Applicable for Bohn, Larkin, Climate Control, and Chandler brands

Table of Contents

Inspection	. . . . . . . . . . .	. . . . . .	. .2
System Warranty	. . . . . . . ... ..	.. ..	..2 ..		.. .. .
Installation	. . . . . . . . . . .	. . . . . .	. .2
Unit Location	. . . . . . . . . . .	. . . . . .	. .2
Sound Vibration			2 ..		.. .. ..
Rigging Instructions			3..		.. .. ..
Space and Location Requirements		.. ..	4..	.. .. .. ..
Typical Arrangements		.. ..	5..	.. .. .. ..
Installation, Refrigerant Piping		.. ..	5..	.. .. ..
Line Sizing	. . . . ... .. .. .. .. ..		6..	.. .. .. .
Discharge Lines	. . . . . . . . . . .	. . . . . .	. .6
Electrical Wiring.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Typical Wiring Diagram	. . . . . . . . . . ... .. .. ..		7 ..		.. .. .. ..
Start-Up	. . . . . . . . . . .	. . . . . .	. .8
Discharge Gas Pulsation.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Operation	. . . . . . . . . . .	. . . . . .	. .8
Winter Operation Head Pressure Control.. . . . . . . . . . . . . . . . .8
Fan Cycling	. . . . . . . . . . .	. . . . . .	. .8
Fan Cycling Head Pressure Controls	. . . . . . . . . . . . . . . . ... ..		..9 ..		.. .. ..
Flooding Head Pressure Controls	. . . . . . . . . . .	. . . . . . .	.9
Refrigerant Charge	. . . . . . . . . .. .. ..		..9 ..		.. .. .
Minimum Ambient for Fan Cycling		.. .. 10
Mechanical Fan Cycling Thermostat Settings.. . . . . . . . . . . 10
Electronic Fan Cycling Thermostat Settings		. . . . . .	11
Pressure Chart	. . . . . . . . . . .	. . . . . .	11
Refrigerant Charge for Fan Cycling plus Flooded Condenser. . . .			12
Flooded Charge Temperature Difference Factor. . .		. . . . . .	13
Additional Refrigerant Charges	. . . . . . . . . . . . . .. .. ..13..				.. .. .. .
Model Cross Reference	. . . . . . . . . .. .. .. ..		13 ..		.. .. .. .
Maintenance	. . . . .. .. ..	.. .. ..13.. ..			.. .. ..
Cleaning Instructions	. . . . . . . . . . .	. . . . . .	13
In-Warranty Return Material Procedure	. . . . . . . . . . .	. . . . . .	14
InterLink Parts List	. . . . . . . . . . .	. . . . . .	14
E Series Motors with Integrated Variable Speed . . .		. . . . . .	15
Speed Adjustment Characteristics	. . . . . . . . . . .	. . . . . .	15
External Control Signal	. . . . . . . . . .. .. .. ..		..15 ..		.. .. .. .. ..
Proportional Pressure Control	. . . . . . . . . . .	. . . . . .	15
Head Pressure Setpoint	. . . . . . . . . . .	. . . . . .	16
Minimum Output	. . . . . . . . . . .	. . . . . .	16
Throttling Range	. . . . . . .. .. .. .. .. ..		16.. ..		.. .. .. .
Integration Constant	. . . . . . . . . .. .. ..		..16 ..		.. .. ..
Reverse Acting or Direct Acting Mode .	. . . . . . . . . . .	. . . . . .	16
Master/Slave Configuration	. . . . . . . . . . .	. . . . . .	17
Protective Features	. . . . . . . .. .. ..	.. ..17..			.. .. ..
Phase Failure	. . . . .. ..	.. ..17
EC Motor Wiring	. . . . . . . . . . .	. . . . . .	17
Typical 1 x 4 EC Motor Wiring Diagram		.. .. ..	18..		.. ..
Typical EC Condenser Wiring with Ext. .	Signal.. . . . . . . . . . . 19
Typical EC Condenser Wiring with Proportional . . .		. . . . . .	19
Pressure Control	. . . . . . . . . . .	. . . . . .	19
Installation Check List	. . . . . . . . .. .. .. ..20 ..				.. .. ..