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T7350 Commercial Programmable Thermostat
63-2605—06
30
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.
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
M32364
2
3
3
4
RCX
SUBBASE
W1 GY1
MH MC
AUXRH
T5 T6 T7 T4 T3
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
MOTION
SENSOR
HUMIDITY
SENSOR
M
OSOS AS MXAS
MHC HPHS
21
4
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
HEAT
RELAY 1
FAN
RELAY
ECONOMIZER
MODULATING
HEAT
(4-20 mA)
–
+
MODULATING
COOL
(4-20 mA)
–
+
R
X
R
X
WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL
BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1
COMMON AT THE SENSOR.
5
5
TR23-H REMOTE SENSOR
9
8
76
5
4
3
21
10
11
12
GND
SENSOR
SET PT
LED
BYPASS
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
M32144
2
2
3
RCX
SUBBASE
W1 GY1
MH MC
AUXRH
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
MOTION
SENSOR
M
OSOS AS MXAS
M
1
3
L1
(HOT)
HEATING
TRANSFORMER
COOLING
TRANSFORMER
L2
1
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
HEAT
RELAY 1
FAN
RELAY
ECONOMIZER
MODULATING
HEAT
(4-20 mA)
–
+
MODULATING
COOL
(4-20 mA)
–
+
R
X
R
X
LONWORKS
®
BUS
LONWORKS
®
BUS
AUX
EB
EB
T5 T6 T7 T4 T3
HUMIDITY
SENSOR
HC HPHS
TR23-H REMOTE SENSOR
9
8
76
5
4
3
21
10
11
12
GND
SENSOR
SET PT
LED
BYPASS
4
WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL
BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1
COMMON AT THE SENSOR.
4