Table Of Contents - Johnson Controls DSH024C Installation Manual

General safety guidelines.............................................................................................................................. 5
Important!............................................................................................................................................ 5
Read before proceeding!.......................................................................................................................... 5
Safety symbols............................................................................................................................................ 5
Changeability of this document............................................................................................................... 6
Associated literature.................................................................................................................................. 7
Technical support....................................................................................................................................... 7
Replacement parts..................................................................................................................................... 7
Nomenclature............................................................................................................................................. 8
Installation...................................................................................................................................................... 9
Pre-installation inspection of equipment......................................................................................... 9
Rigging...................................................................................................................................................... 10
Installation site.................................................................................................................................. 10
Location..................................................................................................................................................... 10
Cabinet configuration options......................................................................................................... 10
Unit mounting.................................................................................................................................... 11
Separation of the units..................................................................................................................... 12
Separating the units................................................................................................................................ 13
Interconnecting refrigerant tubing................................................................................................. 17
Dimensional data............................................................................................................................... 19
Typical service clearances....................................................................................................................... 23
Unit corner weights................................................................................................................................. 25
Ductwork............................................................................................................................................ 26
Louver sizing guidelines.......................................................................................................................... 26
Electrical wiring.................................................................................................................................. 27
Packaged unit........................................................................................................................................... 27
Split system............................................................................................................................................... 27
Low voltage wiring............................................................................................................................ 27
Typical wiring schematics....................................................................................................................... 28
Fan performance............................................................................................................................... 32
Motor and pulley data...................................................................................................................... 35
Blower speed adjustment................................................................................................................ 36
Adjusting the blower speed.................................................................................................................... 36
Low ambient damper........................................................................................................................ 36
Airside economizer (ASE).................................................................................................................. 38
Sequences of operation.......................................................................................................................... 38
Air temperature sensors................................................................................................................... 39
Variable frequency drive (VFD)........................................................................................................ 39
Indoor fan VFD......................................................................................................................................... 40
Outdoor fan VFD (208-230V and 460V only)......................................................................................... 40
Hot gas bypass (HGBP)..................................................................................................................... 41
Adjusting HGBP setpoint......................................................................................................................... 41
Model DSH024C-120C Horizontal R-410A Air Conditioning Units C-Generation Smart Equipment Controller
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