Install Instructions

6
N H
B C
Wired in Series
as Part of Burner
Control Circuit
BLACK
YELLOW
WHITE
120VAC
SERVICE
SWITCH
NH
(L1)
(L2)
Boiler Control
Connections
YELLOW
BB
M
c. Place the probe control’s housing cover (BB)
over the housing (M).
AA
Both Sides
d. Tighten the (2) screws (AA).
The control can be wired this way to interrupt
either a 24 VAC or 120 VAC burner control safety
circuit. Consult boiler manufacturers wiring dia-
grams to identify the safety circuit and recom-
mended location to connect the Yellow wires.
Using the boiler Service Switch as a reference,
connect wires as shown. Use wire nuts (not
furnished) to complete connections.
• Connect White (N) wire as shown to 120VAC
circuit neutral wire.
• Connect Black (H) wire as shown to 120VAC
circuit hot wire.
• Locate Boiler Burner Safety Circuit and connect
Yellow (B) and Yellow (C) wires as shown to
interrupt circuit.
Option 2:
This diagram can be used if you are wiring the RB-122-E to interrupt power to
the boiler burner or safety circuit only.