Honeywell Tradeline T8611M Installation Instructions Manual

APPLICATION
The T8611M Deluxe Programmable Heat Pump Thermostat provides electronic control of 24 Vac single-zone two
compressor or two speed heat pump systems with auxiliary heat. The T8611M can be configured to run a single
compressor heat pump system. Refer to Table 1 for a general description of the thermostat. All T8611 thermostats
require a common wire to supply power.
T8611 Changeover
M Automatic
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.
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.
®U.S. Registered Trademark
Copyright © 2000 Honeywell •
Table 1. Description of T8611 Thermostats.
System Selection
Em Heat-Heat-
Off-Cool-Auto
• All Rights Reserved
Deluxe Programmable
Heat Pump Thermostat
Fan Selection
On-Auto Down-selectable for single compressor systems.

Wallplate Installation

Mount the thermostat 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 functions 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 the
wires through the wiring opening.
5. Loosely inser t the mounting screws into the holes.
6. Tighten the mounting screws.
WIRING
All wiring must comply with local electrical codes and
ordinances. Refer to Fig. 3 and 4 for typical hookup. A
letter code is located near each terminal for identification.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short
equipment circuitry.
Disconnect power supply before installation.
1. Loosen the terminal screws on the wallplate and
connect the system wires. See Fig. 5.
X-XX UL
INSTALLATION INSTRUCTIONS
Comments
T8611M
69-1415