Honeywell T7350 Product Data page 26

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
SUBBASE
L2
1
L1
(HOT)
1
2
3
Fig. 19. Typical hookup of T7350B in three-stage heat and two-stage cool heat pump system
SUBBASE
1
1
2
3
4
Fig. 20. Typical hookup of T7350D in three-stage heat and three-stage cool conventional system with one transformer.
63-2605—5
OUTDOOR
AIR
T7770 REMOTE SENSOR
SENSOR
9 8 7 6 5 4 3 2 1
T5 T6 T7 T4 T3 OS
HEATING
TRANSFORMER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
with two transformers.
T7770 REMOTE SENSOR
9 8 7 6 5 4 3 2 1
T5 T6 T7 T4 T3
HS HC HP
HUMIDITY
SENSOR
L2
2
L1
(HOT)
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.
HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
DISCHARGE
AIR
SENSOR
OS AS AS
X RH RC AUX O/B
2
CHANGE
OVER
3
ECONOMIZER
OUTDOOR
AIR
SENSOR
DISCHARGE
HEAT
AIR
RELAY 3
SENSOR
OS OS AS AS W3/Y4 Y3
M M X RH RC AUX
3
HEAT
MOTION
RELAY 1
SENSOR
4
ECONOMIZER
26
AUX HEAT
STAGE 1
COMPRESSOR
CONTACTOR 2
W2 Y2
Y1 G
FAN
RELAY
COMPRESSOR
CONTACTOR 1
COOLING
TRANSFORMER
M19767A
COMPRESSOR
CONTACTOR 2
HEAT
RELAY 2
W2 Y2
W1 Y1 G
COMPRESSOR
CONTACTOR 3
FAN
RELAY
COMPRESSOR
CONTACTOR 1
M19766A
L2
1
L1
(HOT)