T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
63-2605—5 28
Fig. 23. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating),
two independent cool stages (one modulating), and two transformers.
Fig. 24. Typical hookup of T7350M for system with two independent heat stages (one modulating),
two independent cool stages (one modulating), and one 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.
1
M22006
2
2
3
RCX
SUBBASE
W1 G
AUX
T7770 REMOTE SENSOR
Y1
AH
AC
AUXRH
T5 T6 T7 T4
T3
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
MOTION
SENSOR
HUMIDITY
SENSOR
M
OSOS AS AXAS
MHC HPHSEB
EB
1
3
L1
(HOT)
HEATING
TRANSFORMER
COOLING
TRANSFORMER
L2
1
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
HEAT
RELAY 1
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FAN
RELAY
ECONOMIZER
MODULATING
HEAT
(4-20 mA)
–
+
MODULATING
COOL
(4-20 mA)
–
+
R
X
R
X
LONWORKS
®
BUS
LONWORKS
®
BUS
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.
1
M19769
2
3
3
4
RCX
SUBBASE
W1 G
T7770 REMOTE SENSOR
Y1
MH
MC
AUXRH
T5 T6 T7 T4
T3
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
MOTION
SENSOR
HUMIDITY
SENSOR
M
OSOS AS MXAS
MHC HP
HS
21
4
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
HEAT
RELAY 1
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FAN
RELAY
ECONOMIZER
MODULATING
HEAT
(4-20 mA)
–
+
MODULATING
COOL
(4-20 mA)
–
+
R
X
R
X
