PRODUCT DATA
68- 0185- 2
® U.S. Registered Trademark
Copyright © 2000 Honeywell • All Rights Reserved
T8411R Electronic
Heat Pump Thermostat
APPLICATION
The T8411R Thermostat provides 24V control of a two-stage
heating and one-stage cooling heat pump system with manual
changeover from heat to cool and second stage auxiliary heat.
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.
FEATURES
• Attractive styling complements any decor to the
homeowner’s delight.
• Ease-of-use means fewer homeowner questions and
increased homeowner satisfaction.
• Large display for quick easy readability.
• Conveniently sized 5-1/2 in. x 3-1/2 in. thermostat
makes it easy to install in a variety of locations.
• Keys are located by the display for easy access.
• Fan and system switches are located on the lower
edge to eliminate accidental setting changes.
• Easy installation, setup and self-test saves installer
time and increases their productivity.
• Manual changeover from heat to cool eliminates
unexpected system operation.
• °F or °C temperature display for added model
flexibility.
• Selectable second-stage heating cycle rate (3, 6 or 9
cph). First-stage heating cycle rate is fixed at 3 cph.
• Cooling cycle rate is fixed (3 cph), the standard setting
for compressors, for speedy installation.
• Setpoints are permanently held in memory (no
batteries used) and retained during power outages for
increased installer and homeowner convenience.
• Em Ht and Aux Ht indicators let the homeowner know
when these modes are active.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 3
Settings and Adjustments ................................................. 6
Operation .......................................................................... 7
Checkout .......................................................................... 8
Troubleshooting ................................................................ 9
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