Gas Connection; Gas Change (G20 To G31, Only Evo S 50 To S 95) - IDEAL EVO S 50 Installation And Servicing

EVO S - Installation and Servicing

4.4. Gas connection

IMPORTANT:

4.5. Gas change (G20 to G31, only EVO S 50 to S 95)

IMPORTANT:
IMPORTANT:
IMPORTANT:
26 / 136
Before installing the boiler, clean the interior of the gas line, which must be
free of metal particles and welding debris. This will lengthen the lifespan of
the product.
Before starting up for the first time, check that the pressure of the natural gas
supply corresponds to the nominal boiler pressure, stated on the name plate.
The gas valve is fitted with an integrated filter (125µm), but this is not able to
retain all the impurities contained in the gas and in the mains pipes. To avoid
any malfunction of the gas valve, we advise the fitting of a suitable filter to
the boiler gas supply (50µm).
Before feeding gas to the installation, ensure that the different connections
are correctly made and gas tight.
In particular check the presence of a removable connector between the
isolating valve and the boiler gas supply tapping.
The value before the gas valve must be within the limits shown in the table in
chapter 2.4 for the type of gas.
Before connecting the gas line, check whether the boiler uses G20 or
G31 gas. If it uses G31, make the changes described in chapter 4.5.
The gas line must not be subject to any mechanical stress (risk of
loss of gas tightness of the gas valve).
Check that the natural gas supply corresponds to the nominal boiler
pressure, stated on the name plate.
This EVO S boiler has been adjusted in the factory to work with group H
(type G20) natural gas with a supply pressure of 20 mbar.
Any operations involving changing the type of gas used must be
performed by a qualified professional.
Any operation involving a change of gas type must be done by a qualified
professional. To change gas type, use the operation mode "Manual power
adjustment" (see point 3.3.4 in the instructions for the Navistem B3000
boiler controller) which enables the user to switch straight to the minimum or
maximum setpoint value (i.e. to zero or full power).
The settings have been approved for the gas supply pressures at the
valve inlet (measured on the pressure meter before the gas valve and
with the burner working) in the following tables.
Since the combustion is adjusted with the door open, check that the
combustion is clean after installing the front door.
00RNO0333-B (U0625869)