Mounting Thermostat To Wallplate - Honeywell HEAT PUMP THERMOSTAT T8411R Installation Instructions Manual

KEEP WIRING IN
SHADED AREA
G
C
R
W1
Y
WIRING ENTRANCE
MOUNTING
HOLE
SCREW HOLE
NOT ALL MODELS HAVE BOTH O AND B TERMINALS.
1
Fig. 4. Restrict wiring to shaded area.
THERMISTOR
SENSOR
THERMOSTAT
LOGIC
POWER
SUPPLY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
2 REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPARATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y).
3
NOT ALL MODELS HAVE BOTH O AND B TERMINALS.
Fig. 5. T8411R two-stage heat and one-stage cool wiring diagram with manual changeover.
L
W2
E
B
1
O
MOUNTING
SCREW HOLE
M11331A
STAGE 2 RELAY
STAGE 1 RELAY
FAN SWITCH
ON
AUTO
T8411R ELECTRONIC HEAT PUMP THERMOSTAT
Refer to Fig. 5 for typical wiring hookups. A letter code is
located near each terminal for identification.
1. Loosen the terminal screws on the wallplate and
connect the system wires. See Fig. 5.
2. Securely tighten each terminal screw.
3. Push the excess wire back into the hole.
4. Plug the hole with nonflammable insulation to pre-
vent drafts from affecting the thermostat.

Mounting Thermostat to Wallplate

1. Engage the tabs at the top of the thermostat and
wallplate.
2. Swing down the thermostat and press the lower
edge of the thermostat onto the wallplate to latch.
See Fig. 6.
SYSTEM
SWITCH
EM. HT.
HEAT
OFF
COOL
3
R
AUXILARY
HEAT RELAY
W2
RELAY
L
CHANGEOVER
VALVE HEAT
B
CHANGEOVER
3
VALVE COOL
O
COMPRESSOR
CONTACTOR
Y
2
COMPRESSOR
CONTACTOR
HEAT
W1
EMERGENCY
HEAT RELAY
E
FAN RELAY
G
C
M11333A
69-1481-1
L1
(HOT)
L2
1