Operating Position; Preparing The Boiler; Boring The Boiler Plate; Blast Tube Length - Riello RS 70 Installation, Use And Maintenance Instructions

5.4

Operating position

 The burner is designed to work only 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
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

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.
mm
RS 70 185
RS 100 185
RS 130 195
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:
mm RS 70
Standard 250
Elongated 385
For boilers with front flue passes 15) or flame inversion chamber,
a protection in refractory material 13) must be inserted between
the boiler fettling 14) and the blast tube 12).
This protective fettling must not compromise the extraction of the
blast tube.
For boilers with a water-cooled front piece, a refractory lining 13)-
14)(Fig. 10) is not necessary, unless expressly requested by the
boiler manufacturer.
20144609
A B
275-325
275-325
275-325
D455
RS 100 RS 130
250
385
Installation
1
D7739
5.5.3

Securing the burner to the boiler

C
 Separate the combustion head from the rest of the burner
M 12
(Fig. 10):
M 12
 loosen the 4 screws 3) and remove the hood 1)
 disengage the articulated coupling 7) from the graduated
M 12
sector 8)
Tab. E
 remove the screws 2) from the two slide bars 5)
 remove the two screws 4) and pull the burner back on the
slide bars 5) by about 100 mm.
 disconnect the electrode cables, then completely unthread
the burner from the slide bars.
Fig. 9
280
415
Tab. F
WARNING
16 GB
2 3
Provide an adequate lifting system.
The seal between burner and boiler must be
airtight.
4 5
Fig. 8
D3031
Fig. 10