Honeywell T7350 System Engineering page 13

T7770 REMOTE SENSOR
9
SUBBASE
®
L W
ON ORKS
BUS
®
L W
ON ORKS
BUS
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. 9. Typical hookup of T7350H1009 in three-stage heat and three-stage cool conventional system with one
T7770 REMOTE SENSOR
9 8
SUBBASE
T5
EB
®
L W
ON ORKS
BUS
®
L W
ON ORKS
BUS
L2
1 2
L1
(HOT)
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.
2
3 HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.
4 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
Fig. 10. Typical hookup of T7350H1009 with auxiliary transformer.
OUTDOOR
AIR
SENSOR
8 7 6 5 4 3 2 1
T5 T6 T7 T4 T3 OS
EB EB HS HC HP M
HUMIDITY
MOTION
SENSOR
SENSOR
transformer.
OUTDOOR
AIR
SENSOR
7 6 5 4 3 2 1
T6 T7 T4 T3 OS OS
EB HS HC HP M M
HUMIDITY
MOTION
SENSOR
SENSOR
L2
AUXILIARY
TRANSFORMER
L1
(HOT)
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
4
ECONOMIZER
DISCHARGE
HEAT
HEAT
AIR
RELAY 3
RELAY 2
SENSOR
OS AS AS AUX W3/Y4 Y3
M X RH RC AUX W1
3
HEAT
RELAY 1
COMPRESSOR
CONTACTOR 1
DISCHARGE
HEAT
HEAT
AIR
RELAY 3
RELAY 2
SENSOR
AS AS AUX W3/Y4 Y3 W2
X RH RC AUX W1 Y1
3
HEAT
RELAY 1
4
COMPRESSOR
CONTACTOR 1
ECONOMIZER
13
COMPRESSOR
CONTACTOR 2
W2 Y2
Y1 G
COMPRESSOR
CONTACTOR 3
FAN
RELAY
M22499
COMPRESSOR
CONTACTOR 2
Y2
G
COMPRESSOR
CONTACTOR 3
FAN
RELAY
M22497
63-4368