Johnson Controls ZXA7 Manuals

Manuals and User Guides for Johnson Controls ZXA7. We have 1 Johnson Controls ZXA7 manual available for free PDF download: Installation Manual

Johnson Controls ZXA7 Installation Manual (146 pages)

3-10 ton, 6 ton 60 Hertz R-410A

Brand: Johnson Controls | Category: Air Conditioner | Size: 14 MB

Table of Contents
3
General
5
Safety Considerations
5
Renewal Parts
7
Nomenclature
8
Installation
9
Installation Safety Information
9
Preceding Installation
9
Limitations
11
Location
12
Rigging and Handling
13
ZY04-12 Unit Weights
14
Ductwork
23
Duct Covers
23
Condensate Drain
24
Compressors
24
Filters
25
Power and Control Wiring
25
Thermostat Wiring
26
Typical Field Power and Control Wiring
27
Typical Power Wiring
27
High Altitude
28
High Altitude Operation for Non Ultra-Low Nox Units
28
High Altitude Operation for Ultra-Low Nox Units Only
28
Electrical Data
30
ZY04 to 12 Standard Static Indoor Blower - Without Powered Convenience Outlet
30
ZY04 to 12 Standard Indoor Blower - with Powered Convenience Outlet
35
ZY04 to 12 Medium Indoor Blower - Without Powered Convenience Outlet
40
ZY04 to 12 Medium Indoor Blower - with Powered Convenience Outlet
45
ZY04 to 12 High Indoor Blower - Without Powered Convenience Outlet
50
ZY04 to 12 High Indoor Blower - with Powered Convenience Outlet
54
Physical Data
59
ZY04 to ZY12 Physical Data
59
ZXA7 Physical Data
73
Optional Gas Heat
74
Gas Piping
74
Gas Connection
75
Options and Accessories
76
Power Exhaust
77
Blower Phasing
77
Blower Rotation
77
Belt Tension
78
Airflow Performance
81
ZY04 to 12 Side Duct Application (Belt Drive)
82
ZXA7 Side Duct Application (Belt Drive)
86
ZY04 to 06 Side Duct Application (Direct Drive)
87
ZY04 to 12 Bottom Duct Application (Belt Drive)
88
ZXA7 Bottom Duct Application (Belt Drive)
92
ZY04 to 06 Bottom Duct Application (Direct Drive)
93
RPM Selection
94
Indoor Blower Specifications
95
Supply Air Drive Adjustment
96
Everyday Thermostat Control (ETC)
98
Smart Equipment™ Unit Control Board
102
Operation
107
Cooling Sequence of Operation
107
Space Humidity Sensing
109
Reheat Mode Sequence of Operations for Smart Equipment™ Control Only
110
Normal Occupied Operation Mode
110
Normal Cooling Mode
110
Normal Reheat Mode
111
Alternate Mode
112
Flashcodes or Error Messages
113
Smart Equipment™ Economizer Board Details
113
Indoor Air Quality (IAQ)
116
Gas Heating Operation
116
Gas Heat Ignition Control Board Function (Non-Ultra-Low Nox Models Only)
116
Ignition Control Board on Standby
116
Call for Heat
117
Pressure Switch Proving
117
Pre-Purge
117
Ignition Trial Period
117
Flame Stabilization Period
117
Main Burner Operation
117
Post Purge
118
Lockout
118
High Temperature Limit Switch
118
Roll-Out Switch
118
Power Interruptions
118
Flame Present with Gas off
118
Welded Gas Valve Relay Response
118
Gas Heat Ignition Control Board Function (Ultra-Low Nox)
118
Ignition Control Board on Standby
118
Call for Heat
118
Pre-Purge
119
Ignition Trial Period
119
Main Burner Operation
119
Post Purge
119
Ignition Failures
119
High Temperature Limit Switches
119
Burner Inlet Pressure Switch
119
Power Interruptions
119
Flame Present with Gas off
119
Gas Valve Fault
119
Diagnostic Fault Code Storage and Retrieval
120
Cooling Start-Up
120
Pre-Start Checklist
120
Operating Instructions
120
Post Start Checklist
121
Gas Heat Start-Up
121
Pre-Start Checklist
121
Operating Instructions
121
Lighting the Main Burners
121
Shut down
121
Checking Gas Heat Input
121
Two-Stage Gas Heat
121
Manifold Gas Pressure Adjustment
122
Adjustment of Temperature Rise
124
Burners/Orifices Inspection/Servicing (Non-Ultra-Low Nox Models Only)
124
Start up for Units Equipped for Fan Energy Rating
126
Troubleshooting
128
Charging Tables
133
Smart Equipment™ Control Board Navigation Components
139
Start-Up Sheet
140

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