Honeywell T8411R Installation Instructions Manual

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APPLICATION
The T8411R Heat Pump Thermostat provides 24V control
of a two-stage heating and one-stage cooling heat pump
system with manual changeover from heat to cool. First
stage heating and cooling cycle rates are fixed at 3 cph.
Second stage heating cycle rate is selectable at 3, 6, or
9 cph. Temperature indication can be set for °F or °C.
The T8411R Heat Pump Thermostat is powered directly
from the system transformer. Setpoints are held permanently
in memory and retained during power outages.
The T8411R includes a thermostat, wallplate (for wiring
and mounting thermostat) and owner’s guide. A 7 3/8 in.
(188 mm) x 5 3/4 in. (146 mm) Decorator Cover Plate (for
covering wall marks) is available separately. Order
Honeywell part no. 209650A (Premier White
®
).
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 an old control containing mercury in a
sealed tube.
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous 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 installation is complete, check out product
operation as provided in these instructions.
X-XX UL
INSTALLATION INSTRUCTIONS
®U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. • • All Rights Reserved
T8411R Electronic
Heat Pump Thermostat
CAUTION
Disconnect power supply before beginning wiring
to prevent electrical shock or equipment damage.
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 the sun or appliances.
concealed pipes and chimneys.
unheated (uncooled) areas such as an outside wall
behind the thermostat.
This thermostat is a precision instrument and was carefully
adjusted at the factory.
Handle it carefully.
Mounting Wallplate
IMPORTANT
Level for appearance only. The thermostat
functions normally even when not level.
Mount wallplate, T8411R and the screws provided
(see Fig. 2) as follows:
1. Position the wallplate at the desired location on the
wall.
2. Use a pencil to mark the mounting holes.
3. Remove the wallplate from the wall and drill two 3/16
in. holes in the wall (if drywall) and two 7/32 in. holes
for firmer material such as plaster or wood. Gently
tap the anchors (provided) into the holes until flush
with the wall.
4. Position the wallplate over the holes.
5. Pull the thermostat wire through the entrance hole
on the wallplate.
69-1037