baltur COMIST 26 SP Manual De Instrucciones página 19

ENGLISH
FITTING THE BURNER TO THE BOILER AND CONNECTING THE GAS PIPES
The burner is fitted with a sliding attachment flange
on the burner head. When fitting the burner to the
boiler, this flange must be correctly positioned so
that the burner head penetrates the boiler by the
amount specified by the manufacturers of the
boiler.
When the burner is fitted correctly to the boiler, proceed
with the connection of the gas feed pipe (see BT 8871).
The size of the gas feed pipe must be proportional to
its length and to the gas delivery rate in accordance
with the UNI standard, and it must be perfectly airtight
and properly tested before running the initial tests on
the burner. It is essential to fit a connector to this pipe,
near to the burner, for the easy dismounting of the
burner and/or the opening of the boiler door.
The DUNGS mod. MB... valve has a filter and gas
pressure stabilizer, which means that only the cut-off
cock and the vibration damper joint should be fitted to
the gas feed pipe.
A pressure reduction unit should be installed outside
the heating system only in cases where the gas
pressure exceeds the level permitted by the standard
(400 mm.W.C.).
It is recommended to put a bend directly on the burner
gas train before fitting the detachable connector.
This is to allow the opening of the boiler door, when
the connector itself has been opened.
These details are clearly illustrated in the following
diagram (BT 8871).
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