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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).
17 Hydraulic test
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 7.8 bar mini) for 10 minutes at least.
The test must be done at room temperature.
1
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.
25/09/2012 - 300029104-001-02
NXR5i
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