STANDARD WIRING METHOD
USE WIRE NUTS FOR ALL CONNECTIONS
This wiring method will shut down all power to the boiler in the event of a low water condition.
OPTIONAL WIRING METHOD
USE WIRE NUTS FOR ALL CONNECTIONS
This wiring method will interrupt power only to the burner circuit in the event of a low water condition.
Step
���
Connect the black wire
(H)
and one of
the yellow wires
(CUT-OFF)
from the Safgard 1150 to
the hot 120 VAC lead coming from the service switch.
���
Step
���
Connect the second yellow wire
(CUT-OFF)
from the Safgard 1150 to the
(L1)
boiler
connection.
Connect the black wire
(H)
from the Safgard
1150 to the hot 120 VAC lead coming from
the service switch. Connect the white wire
(N)
to the neutral 120 VAC lead. Locate and
break into the burner circuit. Connect the yel-
low wires
(CUT-OFF)
from the Safgard 1150
in series with other limit controls as shown.
Step
���
Connect the white wire
(N)
from the
Safgard 1150 to the neutral 120 VAC lead and to the
(L2)
boiler connection.
���
���
Model 1150 Instructions: Model 1150 Instructions 9/24/10 9:17 AM Page 4
