Honeywell T841A1316- Manual
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Table of Contents:
- Page 2 – OPERATION; RECYCLING NOTICE; INSTALLATION; When Installing this Product...; Location; CAUTION
- Page 3 – SETTINGS; Heat Anticipator Setting; FAN Switch Setting
- Page 6 – CHECKOUT; Heating; Cooling; Fan
MOUNTING
HOLES (4)
WIRING TERMINAL
(UP TO 12)
M2960A
BACK OF DEVICE
80
70
60
50
EM. HEAT HEAT OFF COOL
80
70
60
50
AUTO ON
FAN
EM. HEAT AUX. HEAT
CHECK
FRONT OF DEVICE
FAN SWITCH
SYSTEM SWITCH
COVER
THERMOMETER
SET POINT
SCALE
LED (UP
TO THREE)
T841A Heating-Cooling
Heat Pump Thermostat
X-XX UL
INSTALLATION INSTRUCTIONS
®U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. • • All Rights Reserved
APPLICATION
The T841A Heating-Cooling 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. See Table 1 for
T841A 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
thermostat.
Table 1. T841A TRADELINE® Specifications.
Fig. 1. External view of T841A.
a
EM. HEAT LED also indicates compressor malfunction.
b
Premier White® color.
c
Sold only in Australia: degrees C.
d
CHECK LED indicates compressor malfunction.
OS Number
LED
Indication
Changeover
Heat
Anticipation
Terminal
Designations
Remarks
System
Switch
Auto Fan
in EM.
HEAT
T841A1308
EM. HEAT
a
,
AUX. HEAT
Manual Cool
or Heat
Stage 2 fixed,
0 to 1.5A
G, R, W
2
, E,
L, B, X, Y, O
Use when E
and W
2
are
jumpered.
EM. HEAT,
HEAT, OFF,
COOL
No
T841A1316
G, R, E, L, X
W
2
, B, W1,
Y
1
, O
Does not
replace
T841A1068.
Yes
T841A1423
b
EM. HEAT,
AUX. HEAT,
CHECK
d
Stage 2
adjustable, 0.1
to 1.2A
W
3
, G, R, W
2
,
E, L, B, X, Y,
O
Not for systems
with E to W
2
jumper
T841A1464
b,c
T841A1498
EM. HEAT
Stage 2 fixed,
0 to 1.5A
G, R, W, H, B,
X, O, Y
Exact
replacement for
York model no.
2TH11703324
T841A1506
b
69-0452-8
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Other Manuals for Honeywell T841A1316
Summary
69-0452—8 2 T841A HEATING-COOLING HEAT PUMP THERMOSTAT OPERATION The stages of heat make sequentially as the temperature drops. Make refers to the mercury switch initiating a call for heat or cool. There is about 1 ° F (0.6 ° C) between stages so the second stage (auxiliary heat) makes only when the...
69-0452—8 3 T841A HEATING-COOLING HEAT PUMP THERMOSTAT ODT 1 EHR 1 RTD 2 RTD 1 ODT 2 RTD 3 ERH 2 RD G SYSTEMSWITCH EM. HEAT HEAT OFF COOL H2 FALL H1 C1 FALL H1 & C1ANTICIPATOR H2 ANTICIPATOR FAN SWITCH AUTO ON COMPRESSORCONTACTOR EM. HEATRELAY CHANGEOVERRELAY (HEAT) AUX. HT. LED (GREEN) X W2 B R...
69-0452—8 6 T841A HEATING-COOLING HEAT PUMP THERMOSTAT CHECKOUT Heating Move the SYSTEM switch on the thermostat to HEAT andthe FAN switch to AUTO. Move the setpoint lever to about10 ° F (6 ° C) above the room temperature. Heating should start and the fan should run. Move the setpoint lever about10 ...
