3
INSTALLATION: WIRING
MODEL 250 AND 250WC LADDER WIRING DIAGRAM
DANGER
The Safgard 250 is intended as a pilot duty control only and must be installed with a relay between it and both the
condensate pump and burner circuit. Direct wiring of the control to either the burner circuit or condensate pump
can result in failure of the control.
G
H
A
LWCO
ALARM
RY2 N.C.
120VAC
HOT
TOP
MIDDLE
RY1
N.O.
INTERNAL
TRANSFORMER
BOILER
GROUND
BOTTOM
120VAC
NEUTRAL
FIELD
WIRING
RY1 N.C.
RY2 N.O.
FEED
PUMP
LIMITS
BURNER
P
P
PROBES
INTERNAL
WIRING
V
FE
RY1
RY2