Italtherm 35 K, Руководство по установке

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Green Heating Technology
19
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 the gas inlet of the boiler to the gas supply piping, it is MANDATORY to
insert a PLAIN GASKET, whose dimensions and material must be adequate. Connection 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!
This boiler is designed and prepared to be supplied with Natural Gas G20 (Methane). It can be
set, just by means of electronic settings, but always by a qualified technician, to operate with
Commercial Propane G31.
It must never be used with Butane gas G30
(that can be present, pure or mixed with Propane G31,
in the portable gas bottles for cookers)
therefore, if the boiler is prepared for operation with
commercial Propane G31 , we recommend to inform the supplier of the fuel, for example, by
applying a suitable warning on the gas tank or in its immediate vicinity, so that it is visible to
the employee when it is being refilled.
Using Propane gas G31, 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 inlet gas pressure
must be compliant with the one specified in "Technical data" on page 47.
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).