3
a.
Turn the boiler off.
b.
Drain the water in the boiler to a level which
is below the lower gauge glass tapping (B)
of the control body (A). Allow the boiler to
cool to 80˚F (27˚C) and allow the pressure
to release to 0 psi (0 bar).
STEP 2 - Preparation
OFF
ON
A
A
B
a.
Using a pipe wrench, remove the float blocking
tube (F) from the new control and tighten a
2
"
(13mm) NPT pipe plug (G) (provided) into the
tapping on the bottom of the control body (A).
Tighten the pipe plug to 31 ft•lb (42 N•m).
A
F
G
When using the tape sealant on the external threads of pipes or fittings, follow the manufacturers instructions. Use
sparingly and do not place on the first thread.
!
CAUTION
STEP 3 - Installing the New Low Water Cut-Off
b.
Using a pipe wrench, install a
2
" (13mm)
nipple (H) into the lower gauge glass tapping
(B) and pipe tee assembly (J). Tighten both
connections to 31 ft•lb (42 N•m).
J
B
H
Содержание McDonnell & Miller 67 Series
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