Gas Supply; Gas Train; Gas Feeding Line - Riello RS 28/M Installation, Use And Maintenance Instructions

4.9

Gas supply

4.9.1

Gas train

Check that there are no gas leaks.
Pay attention when handling the train: danger of
crushing of limbs.
Make sure that the gas train is properly installed by
checking for any fuel leaks.
The operator must use the required equipment dur-
ing installation.
The gas train is type-approved according to standard UL 795 and
is supplied separately from the burner.
 The main gas train must be connected to the burner head
1)(Fig. 17), using flange 2), gasket 3) and bolts 4) supplied
with the burner.
 The gas train can enter the burner from the right or left side,
depending on which is the most convenient, see Fig. 17.
 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 connection
5)(Fig. 17) and can enter the burner from the right or left side.
See the accompanying instructions for the ad-
justment of the gas train.
WARNING
20154169
Installation
4.9.2
WARNING
It must be type-approved according to required standards and is
supplied separately from the burner.
D2294
Key (Fig. 16)
1 Gas input pipe
2 Manual valve
3 Pressure regulator
4 Low gas pressure switch
5 1st safety shut off valve
6 2nd safety shut off valve
7 Standard issue burner with flange gasket
8 Gas adjustment butterfly valve
9 Burner
D2293
Fig. 15
18 GB

Gas feeding line

Explosion danger due to fuel leaks in the presence
of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure 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.
GAS PILOT LINE
MAIN GAS LINE
Fig. 16