Submittal Sheet
ES-ST-Command 1522 © 2015 SunTouch
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A Watts Water Technologies Company
Electrical Wiring Diagram for SunStat Command with SunStat Relay C3 (120/240 VAC). Up to 10 SunStat Relay C3's can be connected
to expand the area controlled by a single SunStat Command.
Dedicated 120 or 240 VAC, 20-amp (maximum) circuit (maximum 15 amp load through SunStat control)
L1
L
LOAD 1
1
2
3
4
5
6
SENSOR
SENSOR
RELAY(B)
COM (A)
AWAY
L2
N
LOAD 2
Floor Heating
Floor Heating
(240 V)
(120 V)
(240 V)
(120 V)
SunStat Command
120 VAC
or
240 VAC
Power
G
L1 (240 V)
L (120 V)
L2 (240 V)
N (120 V)
L1
L
LOAD 1
1
2
3
4
5
6
RELAY(B)
RELAY(B)
COM (A)
COM (A)
L2
N
LOAD 2
Floor Heating
Floor Heating
(240 V)
(120 V)
(240 V)
(120 V)
SunStat Relay C3
120 VAC
or
240 VAC
Power
120 VAC or 240 VAC Heating
Mats or Cables (maximum 15 amps)
120 VAC or 240 VAC Heating
Mats or Cables (maximum 15 amps)
G
L1 (240 V)
L (120 V)
L2 (240 V)
N (120 V)
Use size 18- to 24-gauge 2-conductor
wire up to 100 feet (30 m) in length to
connect Control to Relay C3.
To additional
Relay C3
(if required)
L1
L
LOAD 1
1
2
3
4
5
6
SENSOR
SENSOR
RELAY(B)
COM (A)
AWAY
L2
N
LOAD 2
Floor Heating
Floor Heating
(240 V)
(120 V)
(240 V)
(120 V)
SunStat Command
120 VAC or 240 VAC mat or cable
(maximum 15 amps)
L2 (240 V)
N (120 V)
L1 (240 V)
L (120 V)
120 VAC
or 240 VAC
Power
G
Typical Wiring for SunStat Command with one mat or cable
(120/240 VAC).
Dedicated 120 or 240 VAC, 20-amp (maximum) circuit
(maximum 15 amp load through SunStat control)
Typical Wiring for SunStat Command with multiple mats
or cables (120/240 VAC).
Dedicated 120 or 240 VAC, 20-amp (maximum) circuit
(maximum 15 amp load through SunStat control)
L1
L
LOAD 1
1
2
3
4
5
6
SENSOR
SENSOR
RELAY(B)
COM (A)
AWAY
L2
N
LOAD 2
Floor Heating
Floor Heating
(240 V)
(120 V)
(240 V)
(120 V)
SunStat Command
Two or more 120 VAC or 240 VAC mats
or cables (maximum 15 amps)
L2 (240 V)
N (120 V)
L1 (240 V)
L (120 V)
120 VAC
or 240 VAC
Power
G
SunStat Command Application Examples