Connect water piping, Boiler manual – Weil-McLain 550-141-826/1201 User Manual
Page 19
SERVICE TECHNICIAN ONLY — read and follow completely.
Connect water piping
(continued)
Figure 9
Piping with DIAPHRAGM expansion tank
Figure 10
Piping with CLOSED expansion tank
Isolation
valve
From
system
Isolation valve
Cold water fill
To system
“C” tapping
“N” tapping
Circulator
(Alternate circulator location)
“B1” tapping
Relief
valve
Circulator
Closed type expansion tank
Isolation
valve
Circulator
Automatic
air vent
Relief
valve
To diaphragm
expansion tank
and fittings
From
system
To system
“C” tapping
“N” tapping
Isolation
valve
Cold water
fill
“B1” tapping
Circulator
(Alternate circulator location)
Part number 550-141-826/1211
19
GOLD
WGO
OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 —
Boiler Manual
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