Install Instructions

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
11 62-0195—06
Fig. 13. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating),
two independent cool stages (one modulating), and two transformers.
Fig. 14. Typical hookup of T7350H1009 in three-stage heat and three-stage cool conventional system
with 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
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
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
M32145
2
3
2
3
4
RC
AUX
X
SUBBASE
W1 GY1
W3/Y4 Y3 W2 Y2
AUXRH
DISCHARGE
AIR
SENSOR
OUTDOOR
AIR
SENSOR
MOTION
SENSOR
M
OSOS ASAS
MEBEB
1
4
L1
(HOT)
L2
L
ONWORKS
®
BUS
COMPRESSOR
CONTACTOR 1
COMPRESSOR
CONTACTOR 2
HEAT
RELAY 1
FAN
RELAY
ECONOMIZER
HEAT
RELAY 2
COMPRESSOR
CONTACTOR 3
HEAT
RELAY 3
LONWORKS
®
BUS
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
5
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