Honeywell T8411R - Wiring Diagram and Mounting; Two-Stage Heat Wiring Diagram; Thermostat Mounting Steps

T8411R ELECTRONIC HEAT PUMP THERMOSTAT
5 68-0185—2
Fig. 6. T8411R two-stage heat, one-stage cool wiring diagram with manual changeover.
Fig. 7. Mounting thermostat to wallplate.
L1
(HOT
)
L2
1
1
2
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPARATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y).
NOT ALL MODELS HAVE BOTH O AND B TERMINALS.
SYSTEM
SWITCH
HEAT
OFF
COOL
R
W2
L
B
O
Y
EM. HT.
W1
E
AUXILARY
HEAT RELAY
CHANGEOVER
VALVE HEAT
CHANGEOVER
VALVE COOL
COMPRESSOR
CONTACTOR
COMPRESSOR
CONTACTOR
HEAT
FAN RELAY
RELAY
EMERGENCY
HEAT RELAY
G
C
THERMOSTAT
LOGIC
THERMISTOR
SENSOR
POWER
SUPPLY
ON
AUTO
STAGE 2 RELAY
STAGE 1 RELAY
FAN SWITCH
M11333A
3
3
M18577
SYSTEM
Cool Off Heat Em Ht
Auto On
FAN
DASHED LINES INDICATE TABS
ON BACK OF THERMOSTAT
SYSTEM
Cool Off Heat Em Ht
Auto On
FAN
ENGAGE TABS AT TOP OF THERMOSTAT
WITH SLOTS ON MOUNTING PLATE.
PRESS LOWER EDGE OF
CASE TO LATCH.
A
B
Em Ht Aux Ht
Set Room
Em Ht Aux Ht
Set Room