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Honeywell T8411R Installation Instructions Manual
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Honeywell T8411R Installation Instructions Manual

Honeywell T8411R Installation Instructions Manual

Electronic heat pump thermostat
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See also: Owner's Manual
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.
®U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. •
Heat Pump Thermostat
®
).
• All Rights Reserved
T8411R Electronic
INSTALLATION INSTRUCTIONS
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.
X-XX UL
69-1037

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Summary of Contents for Honeywell T8411R

  • Page 1: Mounting Wallplate

    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.

  • Page 2: Wiring

    T8411R ELECTRONIC HEAT PUMP THERMOSTAT WALL WALL ANCHORS (2) MOUNTING SCREWS (2) Fig. 2. Mounting wallplate to wall. Wiring IMPORTANT Use 18-gauge thermostat cable for proper wiring. All wiring must comply with local electrical codes and ordinances. 69-1037 5 FEET [1.5 METERS]...

  • Page 3: Mounting Thermostat To Wallplate

    POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPERATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y). Fig. 5. T8411R two-stage heat and one-stage cool wiring diagram with manual changeover. T8411R ELECTRONIC HEAT PUMP THERMOSTAT NOTE: Restrict all wiring to the shaded area between the terminals.

  • Page 4: Setting Fan And System Switches

    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 to 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: Setting F/C Indication And Heat Cycle Rate

    52°F. If the room tempera- ture is displayed in °C, set the temperature setpoint to 11°C. M11251 T8411R ELECTRONIC HEAT PUMP THERMOSTAT 2. Press the indicator two seconds to light all segments on the display and to enter installer setup mode. When the keys are released, a two-digit software code is displayed (code displayed may vary).
  • Page 6 T8411R ELECTRONIC HEAT PUMP THERMOSTAT 4. Press the key again to display °C or °F. M11259 5. Press the key to change the °C or °F indication. M11260 NOTE: Stage one heat and cool cycle rates are fixed at 3 cph. Only stage two heat cycle rates are selectable.
  • Page 7 T8411R ELECTRONIC HEAT PUMP THERMOSTAT 69-1037...
  • Page 8 T8411R ELECTRONIC HEAT PUMP THERMOSTAT Home and Building Control Honeywell Inc. Honeywell Plaza P.O. Box 524 Minneapolis, MN 55408-0524 69-1037 J.S. 5-97 Printed in Mexico 69-1037 Home and Building Control Honeywell Limited-Honeywell Limitée 155 Gordon Baker Road North York, Ontario...

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