Johnson Controls ZY Series User Manual

Contents
Contents
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
Johnson Controls Ducted Systems
INSTALLATION MANUAL ZY SERIES 3-10ton 60 Hertz R-410A
3

Johnson Controls ZY Series Specifications

General

Brand	Johnson Controls
Model	ZY Series
Category	Air Conditioner
Language	English