PRODUCT DATA
68-0237-2
® U.S. Registered Trademark
Copyright © 2002 Honeywell • All Rights Reserved
EMM-3U Universal
Electronic MiniZone™ Panel
APPLICATION
The EMM-3U Universal Electronic MiniZone™ Panel controls
single-stage, multi-stage, conventional or heat pump heat/cool
equipment and is used on two- and three-zone applications.
FEATURES
• Compatible with single-stage, multi-stage,
conventional or heat pump applications.
• Uses virtually any Honeywell four-wire, single-stage,
multi-stage, or Trol-A-Temp heat pump thermostat.
• Optional Discharge Air Temperature Sensor for
capacity control with adjustable high and low limits.
• System and Zone LEDs indicate system status.
• Automatic zone changeover with 20-minute
changeover timer.
• Individual zone fan control.
• Thermal circuit breaker protects panel and transformer
from damage if miswired.
• Purge timer protects equipment between calls for
heating and cooling.
• Uses spring-open/power-closed, spring-closed/power-
open, and power-open/power-closed dampers.
• Single or dual transformer equipment compatible.
For Internet access:
www.honeywellzoning.com
For technical support, call 1-800-828-8367.
To download Zoning literature: http://hbctechlit.honeywell.com
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 4
Troubleshooting ................................................................ 15
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