Installation; Working Position; Boiler Plate; Blast Tube Length - Riello RS 25/M BLU Installation, Use And Maintenance Instructions

1 2
(A)
mm A B
RS 25/M BLU 160 224
RS 35/M BLU 160 224
(B)
(C)
PROBE
(D)
(E)
3 4
C
M8
M8
ELECTRODE
5
D3928
D455
D3834
D10833
D3835
7

INSTALLATION

THE BURNER MUST BE INSTALLED
IN CONFORMITY WITH LEGISLATION
AND LOCAL STANDARDS.
WORKING POSITION (A)
The burner is designed to work only in
the positions 1, 2, 3 and 4.
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 allow the working, but make the opera-
tions of maintenance and checking of the
combustion head more difficult page 16.
Any other position could compromise
the correct working of the appliance.
Installation 5 is forbidden, for safety
reasons.
BOILER PLATE (B)
Pierce the closing plate of the combustion
chamber, as in (B). The position of the threaded
holes can be marked using the thermal screen
supplied with the burner.
BLAST TUBE LENGTH (C)
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.
The range of lengths available, L (mm), is as fol-
lows:
Blast tube 10 RS 25/M BLU
• short 230
• long 365
For boilers with front flue passes 13) or flame
inversion chambers, protective fettling in refrac-
tory material 11), must be inserted between the
boiler fettling 12) and the blast tube 10).
This protective fettling must not compromise the
extraction of the blast tube.
For boilers with a water-cooled frontpiece, a
heat-resistant cover is not necessary 11)-12)(C),
unless expressly requested from the boiler man-
ufacturer.
FIXING THE BURNER TO THE BOILER (C)
Before fixing the burner to the boiler, check
(from the opening of the blast tube) that the
probe and the electrode are correctly posi-
tioned, as in (D).
Separate the combustion head from the rest of
the burner, fig. (C):
- disengage the articulated coupling 4) from the
graduated sector 5);
- remove the screws 2) from the two slide
bars 3);
- remove screw 1) and pull the burner back on
slide bars 3) by about 100 mm;
- disconnect the probe and electrode leads,
then unthread the burner completely from the
guides.
Fix the unit 9)(C) to the boiler plate, inserting the
supplied insulating gasket 6)(C). Use the 4
screws, also supplied with the unit, after first
protecting the thread with an anti-locking prod-
uct. The seal between burner and boiler must be
airtight.
If, in the previous check, the position of the
probe or electrode was not correct, remove the
screw 1)(E), extract the inner part 2)(E) of the
head, and adjust them. Do not rotate the probe:
leave it as in (D). If it is located too close to the
ignition electrode, the control box amplifier may
be damaged.
ATTENTION
Proceed with the assembly of the
inner part 2)(E) of the combustion
head, tightening the screw 1)(E) with
a tightening torque of 4 ÷ 6 Nm.
RS 35/M BLU
230
365