Table of Contents
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APPLICATION
The T8501 Deluxe Zone Thermostat provides electronic control of 24 Vac single-stage zoned heating and cooling systems.
Refer to Table 1 for a general description of the thermostat.
Model
Application
T8501D Zone 1 on MABS II or
TotalZone® system
RECYCLING NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash.
Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of the old thermostat.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
the 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.
Location
Install the thermostat about 5 ft (1.5m) above the floor in
an area with good air circulation at average temperature.
See Fig. 1.
®U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. •
Deluxe Zone Thermostat
Table 1. Description of T8501 Thermostat.
Powering Method
Requires common wire to
power supply
• All Rights Reserved
/
INSTALLATION INSTRUCTIONS
Changeover
System Selection Fan Selection
Automatic or
Heat-Off-Cool-Auto
Manual
Do not install the thermostat where it can be affected by:
— drafts, or dead spots behind doors and in corners.
— hot or cold air from ducts.
— radiant heat from sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall
behind the thermostat.
Wallplate Installation
The thermostat can be mounted horizontally on the wall or
on a 2 in. x 4 in. wiring box. Position wallplate horizontally
on the wall or on a 2 in. x 4 in. wiring box.
1. Position and level the wallplate (for appearance
only). The thermostat will function properly even
when not level.
2. Use a pencil to mark the mounting holes. See Fig. 2.
3. Remove the wallplate from the wall and drill two
3/16 inch holes in the wall (if drywall) as marked. For
firmer material such as plaster, drill two 7/32 inch
holes. Gently tap anchors (provided) into the drilled
holes until flush with the wall.
4. Position the wallplate over the holes, pulling wires
through the wiring opening.
5. Loosely insert the mounting screws into the holes.
6. Tighten mounting screws.
X-XX UL
T8501D
On-Auto
69-1049-1
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Table of Contents
Related Manuals for Honeywell T8501D
Summary of Contents for Honeywell T8501D
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Page 1: Wallplate Installation
APPLICATION The T8501 Deluxe Zone Thermostat provides electronic control of 24 Vac single-stage zoned heating and cooling systems. Refer to Table 1 for a general description of the thermostat. Model Application T8501D Zone 1 on MABS II or TotalZone® system... - Page 2 T8501D DELUXE ZONE THERMOSTAT WIRES THROUGH WALL WALL ANCHORS Fig. 2. Mounting the wallplate. 69-1049—1 5 FEET [1.5 METERS] Fig. 1. Typical location of thermostat. Wiring All wiring must comply with local electrical codes and WALL ordinances. Refer to Fig. 3 and 4 for typical hookups. A letter code is located near each terminal for identification.
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Page 3: Mounting Thermostat
TEMPERATURE THERMOSTAT CHANGEOVER CONTROL Fig. 3. Typical wiring diagram for T8501D with zone 1 MABS II control panel. THERMOSTAT TotalZone® PANEL THERMOSTAT CONNECTIONS Fig. 4. Typical wiring diagram for T8501D with zone 1 TotalZone® control panel. FOR STRAIGHT INSERTION STRIP FOR WRAPAROUND 5/16 IN. -
Page 4: System And Fan Settings
T8501D DELUXE ZONE THERMOSTAT SETTINGS System and Fan Settings System settings control the thermostat operation as follows: Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between heating and cooling operation, depending on the indoor temperature. - Page 5 48°F LCD On symbol is displayed when system is energized No difference in displayed temperature and actual room temperature T8501D DELUXE ZONE THERMOSTAT Other Choices (Press key to change) Display Description — — Heat pump and electric heat...
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Page 6: Installer System-Test
T8501D DELUXE ZONE THERMOSTAT IMPORTANT Review the settings to confirm that they match the system. To exit the Installer Setup, press and hold the Information i key until the display returns to normal (approximately three seconds). INSTALLER SYSTEM-TEST Use the Installer System-Test to check the thermostat operation. -
Page 7: Thermostat Information
The 3. Press the increase 4. Press the increase M4864 M10444 T8501D DELUXE ZONE THERMOSTAT key again to display the software identification code. key again to display the software revision number (Example: 001=Revision number 1). -
Page 8: Troubleshooting Guide
T8501D DELUXE ZONE THERMOSTAT 5. Press the increase key again to display the EEPROM identification code. 6. Press and hold the increase keys together, until the room temperature is displayed, to exit the system-test. The system-test times out after ten minutes without any key presses. - Page 9 Verify operation of heating equipment in self-test. Enter Installer Setup number 36 and reconfigure to 00. Enter Installer Setup number 24 and set to 01. Thermostat must have OT terminals and a C7089B1000 installed. Refer to C7089B1000 installation instructions and check wiring between the thermostat and sensor.
- Page 10 T8501D DELUXE ZONE THERMOSTAT 69-1049—1...
- Page 11 T8501D DELUXE ZONE THERMOSTAT 69-1049—1...
- Page 12 T8501D DELUXE ZONE THERMOSTAT Helping You Control Your World ® Honeywell Trol-A-Temp 57 Bushes Lane Elmwood Park, NJ 07407-3204 (201) 794-8004 (800) 828-8367 Fax: (201) 794-1359 69-1049—1 J.H. Rev. 6-97 Printed in Taiwan R.O.C. www.honeywell.com/yourhome 69-1049—1...