Honeywell SUPER TRADELINE T841A Installation Instructions

SUPER TRADELINE
APPLICATION
The T841A Heating-Cooling SUPER TRADELINE®
Thermostat provides 24 Vac control of two-stage heating
and one-stage cooling in heat pump systems, using
manual changeover. This thermostat provides SYSTEM
switch selections of EM. HEAT-HEAT-OFF-COOL and
FAN switch selections of AUTO-ON. See Fig. 1. The
adjustable second stage heat anticipator allows replace-
Model LEDs
a
T841A EM. HEAT ,
AUX. HEAT
a
EM. HEAT LED also indicates compressor malfunction.
FRONT OF DEVICE
HEAT PUMP THERMOSTAT
EM. HEAT HEAT OFF COOL
SYSTEM
SWITCH
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Copyright © 1997 Honeywell Inc. •
®
Table 1. T841A SUPER TRADELINE® Specifications.
Heat
Changeover Anticipation
Manual Cool Stage Two
or Heat Adjustable
90
90
80
80
70
70
60
60
FAN
AUTO ON
EM. HEAT AUX. HEAT
FAN
SWITCH
Fig. 1. External view of T841A.
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T841A Heating-Cooling
Heat Pump Thermostat
ment of most T841A models. See Table 1 for T841A
SUPER TRADELINE® specifications.
Test holes are provided on the front of the thermostat to
accommodate test meter probes without removing the
thermostat from the wall. Remove the cover of the
thermostat to expose the test holes, which are labeled to
correspond with the terminals on the back of the thermo-
stat.
Terminal SYSTEM
Designations Switch
W , O,G,R,E, EM. HEAT,
3
HEAT, OFF,
X,W ,B,Y
2
COOL
COVER
SETPOINT
SCALE
THERMOMETER
LEDS
MOUNTING
HOLES (4)
X-XX UL
INSTALLATION INSTRUCTIONS
Auto Fan in
EM. HEAT
Yes Replaces
most T841As.
BACK OF DEVICE
WIRING TERMINAL (UP TO 12)
Remarks
M12193
69-1083