11
HWE-SS Elite Installation and Operation Manual
Boiler
DHW
Indirect
Building
Heat
System
Pump
System
Sensor
Outdoor
Sensor
T1
T2
COM
COM T3+ T3- EXT+ EXT-
P+ P- COM 24VAC
}
System Sensor
}
Outdoor Sensor
}
DHW Call Dry Contact
}
Enable Dry Contact
}
Setback Dry Contact
Boiler
SYS
Pump
DHW
Pump
SET
®
C O R P O R A T I O N
R
SYSTEM =
147F
TARGET =
150F
DHW Pump
Yellow Wires
Blue Wires
White Wires
DHW
System
Boiler
T1
T2
COM
COM T3+ T3- EXT+ EXT
-
P+ P- COM 24V
AC
System Sensor
Outdoor Sensor
DHW Call
Enable Dry Contact
Setback
Timer
Boiler
SYS
Pump
DHW
Pump
SET
®
C O R P O R A T I O N
R
SYSTEM =
147F
TARGET =
150F
US
C
UL
R
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
120 VAC
Power Source
DHW Pump (White)
System Pump (Y
ellow)
Boiler
(Blue)
Power (Black)
N
L
120 VAC
Power Source
HWE-SS POWERED WITH 120VAC
HWE-SS POWERED WITH 24VAC
T1
T2
COM
COM T3+ T3- EXT+ EXT
-
P+ P- COM 24V
AC
System Sensor
Outdoor Sensor
DHW Call
Enable Dry Contact
Setback
Timer
Boiler
SYS
Pump
DHW
Pump
SET
®
C O R P O R A T I O N
R
SYSTEM =
147F
TARGET =
150F
US
C
UL
R
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
120 VAC
Power Source
DHW Pump (White)
System Pump (Y
ellow)
Boiler
(Blue)
N
L
24VAC
Transformer
120 VAC
Power Source
HWE-SS Plumbing and Wiring Diagrams
Mechanical
Electrical
NOTES:
• The HWE-SS does not source any output power
to any of its relays. A power source must supply
pumps with power and the control can break the
hot leg.
• Heat-Timer recommends using a separate power
source to the control from any pumps, boilers,
heavy electric equipment.
• When wiring a sensor to the HWE-SS, connect the
Shield to the COM terminal on the HWE-SS end.
DO NOT connect the Shield at the sensor end.
• Heat-Timer is aware that each installation is
unique. Thus, any wiring or piping diagrams in
this document are to represent control opera-
tion concept only.