IEC E055-71520301 - Page 8

COM
G3/(Y)
G2/(W)
G
LO
MED
HI
(HEAT)
(COOL)
(VALVE)
FAN
R
C
Sample Wiring Diagram
4-Pipe, Low Voltage Valves, Duct Temperature
Sensor & Dry Contact
COM
G
G3(Y)
G2(W)
RS+5
RS GND
RS
Dry Contact
Duct Sensor
G100-71520307
R
C
R
C
G2
G3
G
RS+5
RS
H2O
Ck1
Y1
W1
H C
24 Volt Water
Valves
E025-71520303
E025-71520303
Thermostat
24vac
Important Note: If a
Duct sensor is conn-
ected to this thermostat
it is suggested that the
fan be programmed for
continuous operation
(step #5, page 11 of the
Owner’s Manual).
Page 7