![Riello C9334500 Installation, Use And Maintenance Instructions Download Page 25](http://html1.mh-extra.com/html/riello/c9334500/c9334500_installation-use-and-maintenance-instructions_1459442025.webp)
Installation
23
20019904
GB
4.12
Gas supply
4.12.1 Gas piping
The main gas train must be connected to the gas attachment
1)(Fig. 21), using flange 2), gasket 3) and screws 4) supplied with
the burner.
The main gas train can enter the burner from the right or left side.
Gas safety shut-off valves 5)-6)(Fig. 22) must be as close as pos-
sible 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)
(Fig. 21) and can enter the burner from the right or left side.
4.12.2 Gas train
It must be type-approved according to UL Standards and is sup-
plied separately from the burner.
Key (Fig. 22)
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 gasket with flange
8
Gas butterfly valve
9
Burner
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.
WARNING
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
DANGER
Disconnect the electrical power using the main sys-
tem switch.
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.
WARNING
See the accompanying instructions for the adjust-
ment of the gas train.
WARNING
Maximum distance from gas train to burner not to
exceed 3 ft.
Fig. 21
D2310
D2311
GAS PILOT LINE
MAIN GAS LINE
Fig. 22