Dunham-Bush ACDX Manuals

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