Gas Supply; Gas Piping; Gas Train - Riello RS 190/M Installation, Use And Maintenance Instructions

4.8

Gas supply

Explosion danger due to fuel leaks in the presence
of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure that the fuel interception tap is closed
before performing any operation on the burner.
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
WARNING
4.8.1

Gas piping

The main gas train must be connected to the gas attachment
1)(Fig. 16), using flange 2), gasket 3) and screws 4) supplied with
the burner.
The gas train can enter the burner from the right or left side, de-
pending on which is the most convenient.
The gas safety shut-off valves 5)-6) must be as close as possible
to the burner to ensure gas reaches the combustion head within the
safety time range.
The pilot gas train must be connected to the gas attachment 5) and
can enter the burner from the right or left side.
4.8.2

Gas train

It must be type-approved according to UL Standards and is sup-
plied separately from the burner.
Disconnect the electrical power using the main sys-
tem switch.
DANGER
Check that there are no gas leaks.
Beware of train movements: danger of crushing of
limbs.
Make sure that the gas train is properly installed by
checking for any fuel leaks.
The operator must use appropriate tools for instal-
lation.
See the accompanying instructions for the adjust-
ment of the gas train.
WARNING
Installation
D2438
Key to layout (Fig. 17)
1 Gas input pipe
2 Manual valve
3 Pressure regulator
4 Low gas pressure switch
st
5 1 safety shut off valve
nd
6 2 safety shut off valve
7 Standard issue burner gasket with flange
8 Gas adjustment butterfly valve *
9 Burner
10 High gas pressure switch *
(*) On the burner
19 GB
D2393
Fig. 16
GAS PILOT LINE
MAIN GAS LINE
Fig. 17
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