Installation; Operation Position; Boiler Plate; Blast Tube Length - Riello RS 34 MZ Installation, Use And Maintenance Instructions

1 2
(A)
mm A B
RS 34 MZ 160 224
RS 44 MZ 160 224
(B)
(C)
PROBE
(D)
(E)
3 4
C
M 8
M 8
ELECTRODE

INSTALLATION

5
!
OPERATION POSITION (A)
!
D3928
Installation 1 is preferable, as it is the only one
that allows the maintenance operations as de-
scribed in this manual. Installations 2, 3 and 4
allow the working, but make the operations of
maintenance and checking of the combustion
head more difficult.
BOILER PLATE (B)
Pierce the closing plate of the combustion
chamber, as in (B). The position of the threaded
D455
holes can be marked using the thermal insula-
tion 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)
• short
• long
D3834
For boilers with front flue gases 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 manufacturer.
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 guides 3);
- remove screw 1) and pull the burner back on
guides 3) by about 100 mm;
D3844
- 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.
D3835
7
THE BURNER MUST BE INSTALLED
IN CONFORMITY WITH LEGISLATION
AND LOCAL STANDARDS.
The burner is designed to operate only
in the positions 1, 2, 3 and 4.
Any other position could compromise
the correct operation of the appliance.
Installation 5 is forbidden, for safety
reasons.
RS 34 MZ
216
351
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 44 MZ
216
351