Circulator & Burner Control Wiring Diagrams

Standard Wiring for Circulator with Boiler

Maintaining a Temperature of 180°

®

®

Low Voltage

120 Volts

20°160°

150°

15°140°

10° 130° 120°

110°

Differential Temperature

LED

flashing green = calling for heat

solid green = at temperature

Pump/TT red = error

24v

Probe

 

L1 Hot

24v

120 Volts

L2 Neutral

Switched Hot

 

Circulator

Wiring for Burner Control L8148E

®

®

20°160°

150°

15°140°

10° 130° 120°

110°

Differential Temperature

LED

flashing green = calling for heat

solid green = at temperature

Pump/TT red = error

24v

Probe

 

Boiler

T

T

TV

W

T

 

 

Z

 

Transformer

 

 

 

 

Thermostat

 

Switching Relay

 

 

C1

C2

B1

B2

 

120 Volt

 

 

 

 

Burner

 

 

L1

L2

Circulator

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Burnham AL SL warranty Circulator & Burner Control Wiring Diagrams, Wiring for Burner Control L8148E