Johnson Controls DSH024C Series - Table of Contents

5
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
TABLE OF CONTENTS