Riello 46662X Installation, Use And Maintenance Instructions page 31

3
Installation
3.1 Installation positions
Removal of the locking screws from the shutter
Remove the screws and the nuts 1)-2), before installing the
burner on the boiler. Replace them with the screws 3) M12 X
25 supplied with the burner.
Horizontal installation
The burner is available in various models to be installed with
the air intake from below or above.
3.2 Blast tube length
The length of the blast tube must be selected according to
the indications provided by the manufacturer of the boiler,
and in any case it must be greater than the thickness of the
boiler door complete with its fettling. For boilers with front
flue passes 1) or flame inversion chambers, protective fet-
tling in refractory material 5) must be inserted between the
boiler fettling 2) and end cone 4). This protective fettling
must not compromise the extraction of the blast tube. For
boilers having a water-cooled front the refractory fettling 2)-
5)(Fig. 10) is not required unless it is expressly requested by
the boiler manufacturer.
3.3 Securing the burner to the boiler
• Prepare an adequate system of hoisting by hooking onto
the rings 3)(Fig. 10).
• Slip the thermal protection (standard equipment) onto the
blast tube 4).
• Place entire burner on the boiler hole arranged previously
and fasten with the screws given as standard equipment.
The coupling of the burner-boiler must be air-tight.
1
2
2
D12015
1
20069040
3
3
Fig. 10
9