Install Instructions

3
A
Based on the following criteria locate a suitable position for the probe (A):
a. Apply pipe sealing compound on the probe
threads (A).
1. Make sure that the end and sides of the
probe are at least 1/4" (6.4 mm) from all
internal metal surfaces to prevent shorting of
the probe to ground.
2. Make sure that the probe extends into the
boiler cavity in order to sense the water.
3. The probe (A) must be installed above the
minimum safe water level (B) as determined
by the boiler manufacturer.
STEP 2 - Installation of the Low Water Cut-Off
IMPORTANT: Do not use Teflon
®
tape.
Only use pipe sealant.
C
B
b. Insert the probe portion (B) of the probe
control into the 3/4" NPT boiler coupling (C),
above the minimum safe water level, as
specified by the boiler manufacturer.
D
F
G
c. Using a 1-3/8" (35mm) open end wrench
tighten the brass hex adapter (F) to
47 ft•lb (64 N•m).
IMPORTANT: Do not turn the housing cover
to tighten the probe control or damage will
result.
To prevent dry fire, which could cause a fire there must be a
2" (51mm) minimum width in the boiler section (D) and the
3/4" (20mm) NPT coupling must be 1/2" (12.7mm) in length
(G) for probe installation and operation.
Failure to follow this warning could cause property damage,
personal injury, or death.
!
WARNING