17
25/01/2012 - 300016864-001-C
P 520
17 Fitting the upper and lower front flanges
`
Fit the plain flange onto the upper connection of the front section (using 4 H 18 nuts), with the Ø 170x222 gasket in between (first soak
the gasket in warm water).
`
Fit the flange with the sludge removal hole onto the lower connection of the front section (hole in the lower part of the flange) using 4 H
18 nuts, with the gasket in between (soak in warm water first).
18 Hydraulic test
1.
After assembling the boiler body, the installer must carry out a water tightness test at a pressure equal to 1.3 times the operating
pressure (that is 9.75 bar mini) for 10 minutes at least.
Fit a square flange with hole facing upwards onto the upper flange with outlet piece.
Fit a blind square flange onto the lower flange with return piece.
M000075
1
2
M000076
