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Honeywell W8735B Installation Instructions Manual

Telephone access module
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See also: Owner's Manual
APPLICATION
The W8735B Telephone Access Module provides remote
telephone access to an HVAC system when used with a
T8635L Microelectronic Communicating Programmable
Thermostat and a W8635A or W8635B Equipment
Interface Module. The W8735B can be used with
conventional or heat pump applications. The W8735B
Model
W8735B
INSTALLATION
When installing this product...
1. Read these instructions carefully. Failure to follow
these instructions can damage the product or
cause a hazardous condition
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out the product operation.
® U.S. Registered Trademark
Copyright © 2000 Honeywell •
Telephone Access Module
Table 1. W8735B Description.
Application
Remote dial-in and
remote dial-out using a
conventional
telephone line.
•All Rights Reserved
can provide remote access of up to nine zones when
used with the W8703A Damper Interface Module(s). See
Table 1.
When used with the C7835A Discharge Temperature
Sensor, additional HVAC diagnostics are available. See
Table 5. The W8735B uses the Enviracom
low cost, wired communications protocol.
Terminals
1, 2, 3, Aux1,
Use with T8635L Communicating Thermostat,
Aux2, Ln1,
W8635A or W8635B Equipment Interface
Ln2, Ph1,
Module.
Ph2, Line in,
Use the W8703A Damper interface Module for
Phone out.
zoning systems.
Use the C7835A Discharge Temperature Sensor
for system diagnostics.
CAUTION
Electrical Shock Hazard.
Can cause personal injury and equipment
damage.
Disconnect power before beginning installation.
Location
Locate the W8735B in the equipment room near the
HVAC equipment and where access to the main
telephone line is available. See Fig.1.
W8735B
INSTALLATION INSTRUCTIONS
Comments
Place Bar Code Here
™
Network, a
69- 1352
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Summary of Contents for Honeywell W8735B

  • Page 1 Phone out. zoning systems. Use the C7835A Discharge Temperature Sensor for system diagnostics. Location Locate the W8735B in the equipment room near the HVAC equipment and where access to the main telephone line is available. See Fig.1. •All Rights Reserved W8735B...
  • Page 2 Mount W8735B outside of any HVAC equipment, where access to main telephone line is available. 1. Unsnap the front cover from the W8735B by grasp- ing the tabs near the top of the module. See Fig. 2. 2. Swing the front cover down and lift it slightly to dis- engage the hinges.
  • Page 3 Disconnect power before beginning installation. 1. Locate the wiring label inside the telephone access module. See Fig. 5. 2. Loosen the terminal screws on the W8735B and connect the system wires. See Fig. 6 through 9 and Table 2. 3. Securely tighten each terminal screw.

  • Page 4: Wiring Diagrams

    Observing this practice ensures that Telephone Access Module drops off the line to allow priority to the house telephone. 1. Wire the telephone line from the telephone com- pany to the Line in connections on the Telephone Access Module. IMPORTANT:...
  • Page 5 SYSTEM TRANSFORMER FACTORY INSTALLER JUMPERS USED Fig. 7. Wiring the communications bus and auxiliary input. MODULE LINE PHONE USE EITHER RJ11 TELEPHONE CONNECTORS OR OPTIONAL TELEPHONE CONNECTIONS. Fig. 8. Telephone installation wiring. T8635L C7089B OUTDOOR TEMPERATURE SENSOR W8635A SUBBASE TELEPHONE...
  • Page 6 CONNECTOR SYSTEM TELEPHONE BATTERY M14805 when the battery is installed in the W8735B, the power outage alert option is available. The Telephone Access Module does not answer within the first 90 seconds after applying power or anytime power is disconnected.
  • Page 7 TELEPHONE ACCESS MODULE COMMUNICATION LED PASS CODE RESET BUTTON STATUS LEDs SWING UP TO LATCH BATTERY COVER HOOK IN BOTTOM M14770 Fig. 11. Replacing module cover. 69-1352...

  • Page 8: Installer Setup

    9 setting in Table 3. Configuration No. Identification (ID) Number. When the W8735B dials out, it uses this number to identify who is calling. (This number can be used to reference a data base of customers when setting up a monitoring application.) The ID must be programmed for the dial-out function.
  • Page 9 Software Version Number. Identifies version of software in Telephone Access Module. The W8735B prompts for setting the dial-out telephone number type as data or voice; choose voice because data is reserved for future applications. Table 3. Configuration Menu. (Continued) Description If these numbers are not programmed, a dial-out is not initiated on alert.
  • Page 10 HVAC contractor to provide a monitoring service at the homeowner’s request. If a telephone number was programmed into the third telephone location, the W8735B also dials the third number and continues until the HVAC contractor acknowledges the alert. NOTE: The W8735B considers telephone number set- tings one and two independently from telephone number setting three.

  • Page 11: Troubleshooting Guide

    When a W8635B Equipment Interface Module is installed and L terminal is correctly used. W7835A Discharge Temperature Sensor is required. Normally open (N.O.) sensor contact is required. Keep the wire length between sensor and W8735B as short as possi- ble and ensure wire is not subjected to any electrical interference.
  • Page 12 TELEPHONE ACCESS MODULE Home and Building Control Home and Building Control Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-1352 G.H. 10-00 Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.