Riello GAS Series - Preparing the Boiler

2915858
14
GB
Installation
5.4 Operating position
5.5 Preparing the boiler
5.5.1 Boring the boiler plate
Pierce the closing plate of the combustion chamber, as in Fig. 9.
The position of the threaded holes can be marked using the ther-
mal insulation screen supplied with the burner.
Tab. D
5.5.2 Blast tube length
The length of the blast tube must be selected according to the in-
dications provided by the manufacturer of the boiler, and in any
case it must be greater than the thickness of the boiler door com-
plete with its fettling. The range of lengths available, L, is as fol-
lows:
Tab. E
For boilers with a front flue gas wash 9)(Fig. 10) or flame inver-
sion chamber, a protection device in refractory material 7) must
be inserted between the boiler refractory 8) and the blast tube 6).
This protective fettling must not compromise the extraction of the
blast tube.
WARNING
 The burner is set up only to operate in posi-
tions 1, 2, 3 and 4 (Fig. 8).
 Installation 1 is preferable, as it is the only
one that allows the maintenance operations
as described in this manual.
 Installations 2, 3 and 4 permit operation but
make maintenance and inspection of the
combustion head more difficult.
DANGER
 Any other position could compromise the cor-
rect operation of the appliance.
 Installation 5 is prohibited for safety reasons.
Fig. 8
2 3 4 51
20160220
mm ABCD
GAS 3 155 160 160 M10
Fig. 9
D46
Blast tube
L mm
GAS 3
Standard 235
Elongated 370