Operating Position; Preparing The Boiler; Securing The Burner To The Boiler - Riello RLS 310/EV O2 MX Modulating Operation

5.4

Operating position

 The burner is designed to operate only in
positions 1, 2, 3 and 4 (Fig. 13).
 Installation 1 is preferable, as it is the only
one that allows the maintenance operations
WARNING
as described in this manual.
 Installations 2, 3 and 4 permit operation but
make maintenance and inspection of the
combustion head more difficult.
 Any other position could compromise the cor-
rect operation of the appliance.
 Installation 5 is prohibited for safety reasons.
DANGER
5.5

Preparing the boiler

5.5.1 Boring the boiler plate
Drill the combustion chamber locking plate as shown in Fig. 14.
The position of the threaded holes can be marked using the ther-
mal screen supplied with the burner.
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.
For boilers with front flue passes 1)(Fig. 15) or flame inversion
chamber, a protection in refractory material 5) must be inserted
between the boiler fettling 2) and the blast tube 4).
The refractory can have a conical shape (minimum 60°).
This protective fettling must not compromise the extraction of the
blast tube.
For boilers with a water-cooled front piece, a refractory lining 2)-
5)(Fig. 15) is not necessary, unless expressly requested by the
boiler manufacturer.
5.6

Securing the burner to the boiler

Prepare a suitable lifting system using the rings
3)(Fig. 15), after removing the fixing screws 7) of
the casing 8).
 Fit the heat insulation supplied onto the blast tube
4)(Fig. 15).
 Fit the entire burner onto the boiler hole prepared previously
(Fig. 14), and fasten with the screws supplied.
The seal between burner and boiler must be
airtight.
WARNING
20182250
Installation
1
mm
RLS 310
RLS 410
RLS 510
RLS 610
22 GB
2 3 4
D7739
20150238
A DF
335 452
335 452
335 452
350 452
5
Fig. 13
Fig. 14

M18
M18
M18
M18
Tab. L
20086747
Fig. 15