Honeywell W8703A Installation Instructions Manual

APPLICATION
The W8703A Damper Interface Module (DIM) controls
up to three conventional zone dampers when used with
T8635L Microelectronic Communicating Programmable
Thermostats and the W8635 Equipment Interface
Module, Table 1. The W8703A uses Enviracom, a low-
cost wired communications protocol.
Using the W8703A Damper Interface Module with up to
three T8635L Microelectronic Communicating Program-
mable Thermostats and a W8635A,B Equipment
Interface Module enables the following features:
• Time synchronization.
• Shared filter indication.
Model Application
W8703A Controls up to
three zone
dampers.
Required Accessories
1. T8635L Microelectronic Communicating Pro-
grammable Thermostat.
2. W8635A Equipment Interface Module for up to
2H/2C conventional applications or W8635B
Equipment Interface Module for up to 2H/1C heat
pump applications.
INSTALLATION
When Installing this Product . . .
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a haz-
ardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable
for your application.
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Damper Interface Module
Table 1. W8703A Description.
Recommended Zone Dampers
Trol-A-Temp Model AOBD
or
Trol-A-Temp Model ARD
or
Trol-A-Temp Model ZD
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INSTALLATION INSTRUCTIONS
• Outdoor temperature display in all zones with only
one C7089B Outdoor Temperature Sensor
connected.
• Vacation Hold in all zones.
• Check LED in all zones (when used with the
W8635B Equipment Interface Module for heat
pumps).
• System switch setting automatically changes in all
zones.
• Individual fan control in each zone.
NOTES:
— Up to three T8635 Thermostats can be con-
trolled with the W8703A Damper Interface
Module.
— Up to six zones can be controlled using two
W8703A and up to nine zones can be con-
trolled using three W8703A.
Use with T8635L Microelectronic
Communicating Programmable
Thermostat and W8635A,B Equipment
Interface Modules.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
5. Follow local codes for installation and application.
CAUTION
Voltage Hazard.
Can cause electrical shock or equipment
damage.
Disconnect power before beginning installation.
Location
Locate the W8703A in the equipment room near the
HVAC equipment. See Fig 1.
W8703A
Comments
69- 1344- 1