17
f
Check the correct functioning of automatic venting de-
vices, eventually installed;
f
Close the radiators venting devices as soon as water flows
out of them;
f
Make sure, by reading the pressure gauge
2
, that the pres-
sure reaches the optimal value of
1.0 bar
(max 1.5 bar)
;
f
Close the water supply valve
1
and bleed each radiator
again;
f
Repeat the venting and pressurization operations until
the air is completely purged from the system.
Gas connection
Due to various installation possibilities, the gas cock
3
supplied with the original Connections Kit has a
simple male Ø ½” connection, facing the rear of the boiler.
The gas pipe 4, upstream the gas cock 3
, should
be supplied by the installer.
While connecting gas inlet pipe of the boiler to the pipe coming from gas network, it is MAN-
DATORY to insert a PLAIN GASKET, whose dimensions and material must be adequate. Con-
nection is NOT suitable for hemp, teflon strip or similar materials. Because of the type of
fitting, the use of those materials does not make the suitable seal with consequent gas leaks!
Using LPG, it is absolutely necessary to install a pressure reducer upstream the boiler. Failure
to do this, the gas valve of the boiler will get damaged.
The gas connection, as generally the boiler installation, must be done by qualified personnel as
prescribed by the regulation in force, because a faulty gas connection could lead to fire, explosion
and other very serious damages to persons, animals and objects. The manufacturer cannot be
held responsible for any damage arising from that situation.
f
Verify what follows:
• cleaning of all system gas pipes in order to avoid the presence of work residuals that could com-
promise the correct boiler functioning;
• gas line and ramp conformity with laws and rules currently in force;
• internal and external tightness of the gas system and connections;
• supply pipe must have a section greater than or equal to the boiler one;
• supply gas must correspond to the one for which the boiler has been set: otherwise, it's manda-
tory to ask to qualified personnel to set the boiler for the correct gas type;
• an interception valve must be installed upstream the appliance.
f
Open the meter valve and purge the air that is inside the system pipes (including all the appliances).
00006 00
2
4
1
3
