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Johnson Controls ZY Series User Manual
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Subject to change without notice. Printed in U.S.A. Copyright © 2020 by Johnson Controls. All rights r
eserved. Supersedes: 5756029-UIM-
C-0920
Johnson Controls Ducted Systems
143
Table of Contents
Table of Contents
3
General
5
Installation
9
Preceding Installation
9
Limitations
11
Location
13
Rigging and Handling
13
ZY04-12 Unit Weights
14
Ductwork
23
Condensate Drain
24
Compressors
24
Filters
25
Power and Control Wiring
25
Typical Field Power and Control Wiring
27
Typical Power Wiring
27
Electrical Data
29
ZY04 to 12 Standard Static Indoor Blower - Without Powered Convenience Outlet
29
ZY04 to 12 Standard Static Indoor Blower - with Powered Convenience Outlet
35
ZY04 to 12 Medium Static Indoor Blower - Without Powered Convenience Outlet
41
ZY04 to 12 Medium Static Indoor Blower - with Powered Convenience Outlet
47
ZY04 to 12 High Static Indoor Blower - Without Powered Convenience Outlet
53
ZY04 to 12 High Static Indoor Blower - with Powered Convenience Outlet
58
Physical Data
63
ZY04 to ZY12 Physical Data
63
Optional Gas Heat
78
Options/Accessories
80
Blower Phasing
81
Airflow Performance
85
ZY04 to 12 Side Duct Application (Belt Drive)
86
ZY04 to 06 Side Duct Application (Direct Drive)
90
ZY04 to 12 Bottom Duct Application (Belt Drive)
91
ZY04 to 06 Bottom Duct Application (Direct Drive)
95
RPM Selection
95
Indoor Blower Specifications
97
Everyday Thermostat Control (ETC)
100
Smart Equipment™ Unit Control Board
104
Operation
109
Cooling Sequence of Operation
109
Electric Heating Sequence of Operations
112
Electric Heat Operating Errors
112
Gas Heating Sequence of Operations
112
Gas Heat Operation Errors
113
Indoor Air Quality AQ
118
Gas Heating Operation
118
Gas Heat Ignition Control Board Function
119
Ignition Control Board on Standby
119
Call for Heat
119
Pressure Switch Proving
119
Pre-Purge
119
Ignition Trial Period
119
Flame Stabilization Period
119
Main Burner Operation
119
Post Purge
120
Lockout
120
High Temperature Limit Switch
120
Roll-Out Switch
120
Power Interruptions
120
Flame Present with Gas off
120
Welded Gas Valve Relay Response
120
Cooling Start-Up
121
Prestart Check List
121
Operating Instructions
121
Post Start Check List
121
Gas Heat Start-Up
122
Pre-Start Check List
122
Operating Instructions
122
Lighting the Main Burners
122
Post Start Checklist
122
Shut down
122
Checking Gas Heat Input
123
Two Stage Gas Heat
123
Manifold Gas Pressure Adjustment
124
Single Stage
124
Two Stage
124
Adjustment of Temperature Rise
125
Burners/Orifices Inspection/Servicing
125
Start up for Units Equipped for FER
127
Direct Drive
127
Troubleshooting
129
Charging Tables
132
Smart Equipment™ Control Board Navigation Components
138
Start-Up Sheet
139
4
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Johnson Controls ZY Series Specifications
General
Brand
Johnson Controls
Model
ZY Series
Category
Air Conditioner
Language
English
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