Honeywell T7350 System Engineering page 14

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
T7770 REMOTE SENSOR
9 8
SUBBASE
T5
EB
®
L W
ON ORKS
BUS
®
L W
ON ORKS
BUS
L2
1
L1
(HOT)
HEATING
TRANSFORMER
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
3
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
Fig. 11. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating), two independent
T7770 REMOTE SENSOR
9 8 7
SUBBASE
T5
®
L W
ON ORKS
BUS
®
L W
ON ORKS
BUS
L2
1
L1
(HOT)
HEATING
TRANSFORMER
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
3
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
Fig. 12. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating), two independent
63-4368
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
cool stages (one modulating), and two transformers.
OUTDOOR
AIR
SENSOR
DISCHARGE
6 5 4 3 2 1
AIR
SENSOR
T6 T7 T4 T3
OS OS
HS HC HP M M
HUMIDITY
MOTION
SENSOR
SENSOR
L2
AUXILIARY
TRANSFORMER
L1
(HOT)
cool stages (one modulating), and three transformers.
MODULATING R
DISCHARGE
HEAT
–
AIR
(4-20 mA) X
+
SENSOR
AS AS AX AH AC
X RH RC AUX W1 Y1
2
HEAT
RELAY 1
COMPRESSOR
CONTACTOR 1
3
ECONOMIZER
MODULATING R
HEAT
–
(4-20 mA) X
+
AS AS MX MH MC AUX
X RH RC AUX W1 Y1
2
FAN
HEAT
RELAY
RELAY 1
COMPRESSOR
CONTACTOR 1
3
ECONOMIZER
14
MODULATING R
COOL
–
(4-20 mA) X
+
AUX
G
FAN
RELAY
COOLING
TRANSFORMER
MODULATING R
COOL
–
(4-20 mA) X
+
G
COOLING
TRANSFORMER
L2
1
L1
(HOT)
M22498
L2
1
L1
(HOT)
M22491