PRODUCT DATA
69- 1360- 2
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
Mastertrol® Automatic Balancing System™
(MABS®) EZ Zone (EZ-2 and EZ-4)
Control Panels
APPLICATION
The MABS EZ-2 and EZ-4 are microprocessor-based forced
air zone control panels that provide automatic or manual
changeover control of single- and two-stage heating and
cooling and heat pumps with or without auxiliary heat.
FEATURES
• MABS EZ-2 controls two zones and MABS EZ-4 control
four zones. For systems requiring five or more zones,
the TotalZone series of control panels is used.
• Uses standard four-wire (R,W,Y,G) thermostats.
• Any zone thermostat changeover is based on first call.
• Bank of eight DIP switches provides easy system
configuration.
• Adjustable purge timing of two minutes or three and
one-half minutes.
• Adjustable heating and cooling limit with optional
ZoneMAX Sensor.
• Stage control allows built-in timer to control heating
and cooling stages.
• Use any four-wire thermostat.
For Internet access: www.trolatemp.com or
www.honeywell.com/yourhome/zoning/zoning_home.htm
For technical support, call 1-800-TAT-Temp (1-800-828-8367).
To download Zoning literature: http://hbctechlit.honeywell.com
Contents
Application ........................................................................ 1
Features ............................................................................ 1
Specifications .................................................................... 2
Ordering Information ......................................................... 2
Installation ......................................................................... 3
Startup and Checkout........................................................ 8
Operation........................................................................... 9
Troubleshooting................................................................. 12
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