Dunham-Bush ACDX, Installation, Operation And Maintenance Instructions

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Screw Type Air-Cooled Packages
Installation, Operation, and Maintenance Instructions
Form 6193A
ACDX/AUDX
TABLE OF CONTENTS
DESCRIPTION ........................................................................................................... PAGE NO.
Introduction & Product Identification .......................................................................................... 1
Physical Specifications .............................................................................................................. 2
Inspection .................................................................................................................................. 3
Rigging and Moving ................................................................................................................... 3
Location and Mounting .............................................................................................................. 3
Piping connections ............................................................................................................... 3 & 4
Multiple Chiller Water Connections ...................................................................................... 4 & 5
AUDX Condensing Unit Piping................................................................................................... 4
Electrical Connections ............................................................................................................... 6
ACDX Operation & Start-up ................................................................................................. 6 & 7
Maintenance .............................................................................................................................. 7
Slide Valve Unloading Operation ................................................................................................ 8
Low Ambient Operation ............................................................................................................. 9
Fan Position Numbers .............................................................................................................. 10
Fan Cycling Sequence ............................................................................................................. 11
ACDX Sequence of Operation ................................................................................................. 12
Electrical Controls ........................................................................................................ 13, 14, 15
Field Control Wiring ......................................................................................................... 15 & 16
Star-Delta Starting Operation .................................................................................................. 16
Microcomputer Controller ............................................................................................. 16 thru 23
Typical Wiring Diagram and Electrical Data ................................................................. 24 thru 30
Evaporator Water Pressure Drop ............................................................................................. 31
ACDX Refrigerant Piping Schematic ....................................................................................... 32
Condenser Clearance Requirements ....................................................................................... 33
Rigging Instructions ................................................................................................................. 34
Point Loading ...................................................................................................................... 35-40
Trouble Shooting Guide ........................................................................................................... 41
Start-up Check List .................................................................................................................. 42