Mounting Thermostat - Honeywell T8511G Installation Instructions Manual

THERMOSTAT
O O B O
T T
2
OUTDOOR
TEMPERATURE
SENSOR
COMPRESSOR
CONTACTOR
FAN
RELAY
COOL
CHANGEOVER
VALVE
HEAT
CHANGEOVER
VALVE
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
AVAILABLE ON SELECT MODELS.
2
Fig. 3. Typical hookup in heat pump application.
THERMOSTAT
O O W2 O G
T T
2
OUTDOOR
TEMPERATURE
SENSOR
COMPRESSOR
CONTACTOR
FAN
RELAY
COOL
CHANGEOVER
VALVE
AUX. HEAT
RELAY
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
AVAILABLE ON SELECT MODELS.
2
Fig. 4. Typical hookup in heat pump system
with emergency heat relay.
G Y C L R
EQUIPMENT
MONITOR
1
L1
(HOT)
L2
M4829
Y C E L R
EM. HEAT
RELAY
EQUIPMENT
MONITOR
1
L1
(HOT)
L2
M4828
MICROELECTRONIC HEAT PUMP THERMOSTAT
O O W1
T T
2
OUTDOOR
TEMPERATURE
SENSOR
COMPRESSOR
CONTACTOR
FAN
RELAY
COOL/HEAT
CHANGEOVER
VALVE
HEAT
RELAY 1
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
AVAILABLE ON SELECT MODELS.
2
Fig. 5. Typical hookup in heat pump application with
emergency heat relay and O/B terminal.
FOR WRAPAROUND
INSERTION STRIP
7/16 IN. (11 MM).
Fig. 6. Proper wiring technique.

Mounting Thermostat

1. Engage tabs at the top of the thermostat and
wallplate. See Fig. 7.
2. Press lower edge of case to close and latch.
3
THERMOSTAT
O/B G Y1 C E W2
EM. HEAT
RELAY
HEAT
RELAY 2
EQUIPMENT
MONITOR
FOR STRAIGHT
INSERTION STRIP
5/16 IN. (8 MM).
M4826
L R
1
L1
(HOT)
L2
M4830
69-0961—4