Corps. Indirect - Fired Water Heater Installation, Operating and Service Instructions

14
Low Voltage
120 Volts
L1 Hot
120 Volts
L2 Neutral
Circulator
24v
TemperatureDifferential
Pump/TT 24v
LED
flashing green = calling for heat
solid green = at temperature
red = error
20°
15°
10°
5°
160°
150°
140°
130°
120°
110°
Probe
Switched Hot
®
®
T
T
Switching Relay
Transformer
Thermostat
Burner
TV
W
T
Z
C1 C2
L1 L2
B1
B2
120 Volt
Boiler
Circulator
TemperatureDifferential
Pump/TT 24v
LED
flashing green = calling for heat
solid green = at temperature
red = error
20°
15°
10°
5°
160°
150°
140°
130°
120°
110°
Probe
®
®
Circulator & Burner Control Wiring Diagrams
Standard Wiring for Circulator with Boiler
Maintaining a Temperature of 180°
Wiring for Burner Control L8148E