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T8141A ELECTRONIC HEAT PUMP THERMOSTATS
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this unit may not exactly match the listed
specifications. Also, this product is tested and
calibrated under closely controlled conditions, and
some minor differences in performance can be
expected when those conditions are changed.
Thermostat
Terminal
Changeover
Designations
Heat or Cool
R, G, E, Y, W2 (W), L (X),
B, O, C (X)
R, G, E, Y, W2, L, B, O, X
Cool Only
R, G, E/X (E), Y, W, O,
C/B (B)
Electrical Rating:
24 Vac, 60 Hz.
Fan Mode Selections:
AUTO, ON.
Temperature Ratings:
Setpoint temperature range is 45°F to 90°F (7°C to 32°C)
for Heating and 60°F to 95°F (16°C to 35°C) for
Cooling.
Shipping and Storage: -30°F to 150°F (-34°C to 66°C).
Relative Humidity Range:
5% to 90% RH noncondensing.
Dimensions:
See Fig. 1.
ORDERING INFORMATION
When purchasing replacement and modernization products from your contractor, distributor, or Honeywell sales representative,
please specify:
1. Model number.
2. Color choice for Heat or Cool changeover thermostat (Cool Only changeover thermostat is only available in taupe).
3. Thermostat changeover desired.
4. System switches desired.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 2C9. International Sales
and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan,
Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
68-0169—1
Models:
T8141A Electronic Heat Pump Thermostats provide 24 Vac
control of two-stage heating and one-stage cooling for single
speed heat pump systems. Models are available with Heat and
Cool or Cool Only changeover. Heat or Cool changeover
thermostat is available in taupe, off-white, and white finish
colors. Cool Only changeover thermostat is available in taupe.
Table 1. T8141A Thermostat Specifications.
LEDs
AUX. HEAT, EM. HEAT
AUX. HEAT, GEO LOCK
AUX. HEAT, EM. HEAT
Mounting Means:
Mounting plate is mounted horizontally on the wall using the
three mounting screws and three wall anchors provided.
Wiring Connections:
Screw terminals.
Emissions:
Finish:
Heat or Cool changeover thermostat is available in taupe, off-
white, and white colors. Cool Only changeover thermostat is
available in taupe. Specify color for Heat or Cool changeover
model when ordering.
2
System Switches
EM. HEAT, HEAT, OFF, COOL
EM. HEAT, GEO HEAT, OFF,
GEO COOL
EM. HEAT, HEAT, OFF, COOL
Meets FCC Class B requirements.
Meets DOC (Canadian) Class B requirements.
Wiring
Diagram Fig.
5
6
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