Blast Tube Length; Securing The Burner To The Boiler; Combustion Head Calibration - Riello RLS 100 Installation, Use And Maintenance Instructions

5.7

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 (mm), is as follows:
Blast tube 10)(Fig. 9)
RLS 70
RLS 100
RLS 130
5.8

Securing the burner to the boiler

Detach the combustion head from the burner:
 disconnect the hoses by unscrewing the two connectors
6)(Fig. 9).
 Loosen the 4 screws 3) and remove the cover 1).
 Remove the screws 2) from the slide bars 5).
 Remove the two screws 4) and pull the burner back on slide
bars 5) by about 100 mm.
5.8.1

Combustion head calibration

At this point check, for model RLS 130, whether the maximum de-
nd
livery of the burner in 2 stage operation is contained in area A
or in area B of the firing rate. See page 12.
If it is in area A then no operation is required.
If, on the other hand, it is in area B:
 unscrew the screws 1)(Fig. 10) and disassemble the blast
tube 2).
 Move the fixing of the rod 3) from position A to position B,
thereby causing the shutter 4) to retract.
 Now refit the blast tube 2) and the screws 1).
Once this operation has been carried out (if it was required), se-
cure the flange 9)(Fig. 9) to the boiler plate, interposing the ther-
mal insulating screen 7) supplied with the burner.
Use the 4 screws, also supplied with the unit, after first protecting
the thread with an anti-locking product.
The seal between burner and boiler must be air-
tight.
WARNING
20033295
Short Long
250 385
250 385
250 385
D11152
Installation
For boilers with front flue passes 13)(Fig. 9) or flame inversion
chambers, protective fettling in refractory material 11) must be in-
serted between the boiler fettling 12) and the blast tube 10).
This protective fettling must not compromise the extraction of the
blast tube.
For boilers having a water-cooled front the refractory fettling 11)-
12)(Fig. 9) is not required unless it is expressly requested by the
boiler manufacturer.
 Only for long blast tube burner: remove the screws 2) and
install the two extension bars 14) onto the slide bars 5); then
fix the screw 2).
 Disconnect the electrode wires and then pull the burner
completely off the slide bars 5).
D1192
16
GB
Fig. 9
Fig. 10