Honeywell T841A Installation Instructions Manual page 5

H1
C1
FALL
H1/C1
ANTICIPATOR
H2
FALL
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 AUTO FAN IN EM. HEAT.
Fig. 5. Internal schematic and typical wiring diagram for TRADELINE® T841A1423 and T841A1464 (sold only in
Australia) with AUX. HEAT, EM. HEAT and CHECK LEDs. Provides heat or cool changeover relay control and
8
FAN
SWITCH
AUTO
5
9
3
4
12
11
2
10
EM. HT.
6
HEAT
OFF
COOL
automatic fan in EM. HEAT mode.
EM.HEAT HEAT OFF COOL
MOVE INDICATOR
TO MATCH CURRENT
RATING OF PRIMARY CONTROL
Fig. 6. Second stage adjustable heat anticipator indicator.
T841A HEATING-COOLING HEAT PUMP THERMOSTAT
W3
ON
G
R
W2
AUX. HT.
LED (GREEN)
E
EM. HT.
LED (RED)
L
SYSTEM
SWITCH
CHECK
LED (RED)
B
X
LACO
Y
O
.8.6 .4
5
ODT 1
RTD 1
EHR 1 RDT 2
RD
ODT 2
EHR 2 RTD 3
FAN REALY
RTD 1
EM. HT. RELAY
SYSTEM MONITOR
HEAT CHANGE-
OVER VALVE
COMPRESSOR
CONTACTOR
COOL CHANGE-
OVER VALVE
LONGER
M2962B
L1
L2
(HOT)
1
CHP
M6059C
69-0452—8