Table Of Contents - Johnson Controls DSH024C Series Installation Operation & Maintenance

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Table Of Contents

Table of Contents

FORM 145.32-IOM5

ISSUE DATE: 04/08/2019

SECTION 1 - INSTALLATION ..................................................................................................................................9

Pre-Installation Inspection of Equipment .......................................................................................................... 9

Rigging ....................................................................................................................................................9

Installation Site ............................................................................................................................................... 10

Location .................................................................................................................................................10

Cabinet Configuration Options ....................................................................................................................... 10

Unit Mounting ................................................................................................................................................. 10

Separation of the Units ................................................................................................................................... 11

Separating the Units ..............................................................................................................................12

Interconnecting Refrigerant Tubing ................................................................................................................ 15

Dimensional Data ........................................................................................................................................... 16

Typical Service Clearances ...................................................................................................................20

Unit Corner Weights ..............................................................................................................................22

Ductwork ........................................................................................................................................................ 23

Louver Sizing Guidelines .......................................................................................................................23

Electrical Wiring .............................................................................................................................................. 23

Packaged Unit .......................................................................................................................................24

Split System ..........................................................................................................................................24

Low Voltage Wiring ......................................................................................................................................... 24

Typical Wiring Schematics ....................................................................................................................24

Fan Performance ........................................................................................................................................... 28

Motor and Pulley Data .................................................................................................................................... 32

Blower Speed Adjustment .............................................................................................................................. 34

Adjusting the Blower Speed ..................................................................................................................34

Low Ambient Damper ..................................................................................................................................... 34

Airside Economizer (ASE) .............................................................................................................................. 36

Sequences of Operation ........................................................................................................................36

Air Temperature Sensors ................................................................................................................................ 37

Variable Frequency Drive (VFD)..................................................................................................................... 37

Indoor Fan VFD .....................................................................................................................................37

Outdoor Fan VFD (208-230V and 460V Only) ...................................................................................... 38

Hot Gas Bypass (HGBP) ................................................................................................................................ 38