Honeywell T7350 Installation Instructions Manual page 11

T7770 REMOTE SENSOR
9 8 7 6 5
SUBBASE
T5 T6
L2
1
L1
(HOT)
HEATING
TRANSFORMER
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
2
3
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
Fig. 10. Typical hookup of T7350B in three-stage heat and two-stage cool heat pump system
T7770 REMOTE SENSOR
9 8 7 6
SUBBASE
T5 T6
L2
1 2
L1
(HOT)
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.
3
HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.
4 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
Fig. 11. Typical hookup of T7350D in two-stage heat and four-stage cool conventional system.
OUTDOOR
AIR
SENSOR
DISCHARGE
4 3 2 1
AIR
SENSOR
T7 T4 T3 OS OS AS
X
with two transformers.
OUTDOOR
AIR
SENSOR
DISCHARGE
5 4 3 2 1
AIR
SENSOR
T7 T4 T3 OS OS
HS HC HP M M
HUMIDITY
MOTION
SENSOR
SENSOR
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
AUX HEAT
STAGE 1
AS W2
RH RC AUX O/B Y1
2
CHANGE
OVER
COMPRESSOR
CONTACTOR 1
3
ECONOMIZER
HEAT
RELAY 2
COMPRESSOR
CONTACTOR 4
AS AS W3/Y4 Y3 W2
X RH RC AUX W1 Y1
3
HEAT
RELAY 1
COMPRESSOR
CONTACTOR 1
4
ECONOMIZER
11
COMPRESSOR
CONTACTOR 2
Y2
G
FAN
RELAY
L2
1
L1
(HOT)
COOLING
TRANSFORMER
M19767A
COMPRESSOR
CONTACTOR 2
Y2
G
COMPRESSOR
CONTACTOR 3
FAN
RELAY
M19768A
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