User's Manual

PRODUCT DATA
68-0258ES-04
W8835 EnviraZone Panel
APPLICATION
The W8835 EnviraZone Panel controls single-stage, multi-
stage, conventional or heat pump heat/cool equipment. It
controls three zones, and is expandable up to nine zones with
two additional W8703A Damper Interface Modules (DIM).
For Internet access: http://yourhome.honeywell.com
.
For technical support, call: 1-800-828-8367.
IMPORTANT
Please read these instructions and keep them
in your records.
FEATURES
• Controls up to three stages heat and two stages
cooling of single-stage, multi-stage, conventional, or
heat pump.
• Controls up to three zones and can be expanded up to
nine zones with two W8703A DIM.
• Uses VisionPRO® IAQ or FocusPRO communicating
thermostats for manual or automatic changeover by
zone.
• Supports dehumidification, humidification and
ventilator controls.
• Purge timer protects equipment between calls for heat
or cool with choice of panel or HVAC equipment-
controlled fan.
• System and zone damper LEDs indicate system and
damper status.
• Individual zone fan control.
• Supports C7835 Discharge Air Temperature Sensor for
capacity control with adjustable high and low limits
and equipment failure indication.
• Controls duel fuel equipment when used with an
external fossil fuel kit.
Contents
Application.........................................................................1
Features ............................................................................2
Specifications ....................................................................2
Ordering Information .........................................................2
Installation .........................................................................4
Startup and Checkout........................................................8
Operation...........................................................................8
Troubleshooting.................................................................11