Mounting Thermostat To Wallplate - Honeywell T8411R Installation Instructions Manual

KEEP WIRING IN
SHADED AREA
G
C
R
W1
Y
WIRING ENTRANCE
MOUNTING
HOLE
SCREW HOLE
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 SEPERATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y).
Fig. 5. T8411R two-stage heat and one-stage cool wiring diagram with manual changeover.
L
W2
E
B
O
MOUNTING
SCREW HOLE
M11331
STAGE 2 RELAY
SYSTEM
SWITCH
EM. HT.
STAGE 1 RELAY
FAN SWITCH
ON
AUTO
3
T8411R ELECTRONIC HEAT PUMP THERMOSTAT
NOTE: Restrict all wiring to the shaded area between the
terminals. See Fig. 4.
Refer to Fig. 5 for typical wiring hookup. 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
prevent 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.
HEAT
OFF
COOL
L1
(HOT)
R
L2
AUXILARY
HEAT RELAY
W2
RELAY
L
CHANGEOVER
VALVE HEAT
B
CHANGEOVER
VALVE COOL
O
COMPRESSOR
CONTACTOR
Y
2
COMPRESSOR
CONTACTOR
HEAT
W1
EMERGENCY
HEAT RELAY
E
FAN RELAY
G
C
M11333
69-1037
1