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3.9 GAS CONNECTION
The gas supply pipe must be connected to the boiler using a 3"
flanged fitting as indicated in Section 2.3.
e supply pipe must have a section equal to or larger than the one used
in the boiler and must provide the correct gas pressure.
It is advisable to adhere to the standard specications and requirements
in force, installing a gas supply isolation valve, gas lter, anti-vibration
joint, etc.
e gas supply pipe to the boiler must be tested for tightness and purged
referring to IGE/UP/1 and 1A.
DANGER!
The gas connection must be installed and
commissioned by an authorised Gas Safe registered
engineer who must observe and adhere to the Gas
Safety (Installation and u se) regulations 1998 and
the local requirements of the gas supply company,
as incorrect installation can cause damage to people,
animals and property, for which the manufacturer
will not be held liable.
EXAM
PLE of GAS SUPPLY SYSTEM
Before installation it is advisable to clean the inside
of the gas supply pipe thoroughly, in order to remove
any residues that could stop the boiler from operating
smoothly.
If you notice the smell of gas:
a) Close the gas valves.
b) Do not operate electrical switches, the telephone or
any other object that can generate sparks.
c)) mmediately open doors and windows to create an
air current that puries the room.
d) Seek the assistance of professionally qualified
personnel.
In order to detect any gas leaks it is advisable to install
a surveillance and protection system composed of a gas
leak detector combined with a cut-o safety shut-o
on the gas supply pipe.
4
3
INSIDE BOILER
PLANT ROOM
OUTSIDE BOILER
PLANT ROOM
1 - Isolation valve
2 - Gas solenoid valve
3 - Appliance isolation valve
4 - Test and purge point
2
1
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