Honeywell HEAT PUMP THERMOSTAT T8411R Installation Instructions Manual
Electronic heat pump thermostat
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Also See for HEAT PUMP THERMOSTAT T8411R:
- Owner's manual (12 pages) ,
- Installation instructions manual (8 pages) ,
- Manual (12 pages)
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The T8411R Heat Pump Thermostat provides 24V
control of 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, 4, 5, 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. Batteries are not required
because setpoints are held permanently by non-volatile
memory.
The T8411R TRADELINE® model includes a thermostat,
wallplate (for wiring and mounting thermostat), and
owner's guide. A 7 3/8 in. x 5 3/4 in. (188mm x146 mm)
decorator cover plate (for covering wall marks) is
available separately. Order Honeywell part no. 209649A
(taupe color).
MERCURY 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.
® U.S. Registered Trademark
Copyright © 2002 Honeywell •
Heat Pump Thermostat
•All Rights Reserved
T8411R Electronic
INSTALLATION INSTRUCTIONS
CAUTION
Electrical Shock or Equipment Damage
Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
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 to Wall
IMPORTANT
Level only for appearance. The thermostat func-
tions normally even when not level.
Mount wallplate, T8411R and the screws provided (see
Fig. 2) as follows:
1. Place 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) or two 7/32 in.
holes for firmer material such as plaster or wood.
4. Gently tap the anchors (provided) into the holes
until flush with the wall.
5. Position the wallplate over the holes.
6. Pull the thermostat wire through the wallplate
entrance hole.
7. Fasten the wallplate to the wall using the anchors
and screws provided.
69- 1481- 1
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Table of Contents
Related Manuals for Honeywell HEAT PUMP THERMOSTAT T8411R
Summary of Contents for Honeywell HEAT PUMP THERMOSTAT T8411R
- Page 1 (for wiring and mounting thermostat), and owner’s guide. A 7 3/8 in. x 5 3/4 in. (188mm x146 mm) decorator cover plate (for covering wall marks) is available separately. Order Honeywell part no. 209649A (taupe color). MERCURY NOTICE If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash.
- Page 2 T8411R ELECTRONIC HEAT PUMP THERMOSTAT WALL WALL ANCHORS (2) MOUNTING SCREWS (2) WHEN USING WALL ANCHORS, DRILL 3/16 INCH HOLES FOR DRYWALL, 7/32 INCH HOLES FOR PLASTER OR WOOD. Fig. 2. Mounting wallplate to wall. Wiring IMPORTANT Use an 18-gauge maximum wire for wiring the T8411R Thermostat.
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Page 3: Mounting Thermostat To Wallplate
NOT ALL MODELS HAVE BOTH O AND B TERMINALS. Fig. 5. T8411R two-stage heat and one-stage cool wiring diagram with manual changeover. T8411R ELECTRONIC HEAT PUMP THERMOSTAT Refer to Fig. 5 for typical wiring hookups. A letter code is located near each terminal for identification. -
Page 4: Operation
T8411R ELECTRONIC HEAT PUMP THERMOSTAT ENGAGE TABS AT TOP OF THERMOSTAT WITH SLOTS ON MOUNTING PLATE. PRESS LOWER EDGE OF CASE TO LATCH. Fig. 6. Mounting thermostat wallplate. OPERATION Setting FAN and SYSTEM Switches Fan and system settings are controlled manually by using the switches located at the bottom of the thermostat case. -
Page 5: Set Temperature Setpoint
To turn cool off, press the 3. Press the 4. Press the M14683 T8411R ELECTRONIC HEAT PUMP THERMOSTAT keys simultaneously for more than one second to light all segments on display and to enter installer setup mode. When the keys are released, a two-digit software revision code is dis- played. - Page 6 A typical example is shown, but CC varies by model. (This information is for factory use only.) M18420 Automation and Control Solutions Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-1481-1 G.H.