Operating Position; Preparing The Boiler; Introduction; Boring The Boiler Plate - Riello RS 55/E BLU Installation, Use And Maintenance Instructions

5.4

Operating position

 The burner is designed to operate only in
positions 1 , 2 , 3 and 4 (Fig. 12).
 Installation 1 is preferable, as it is the only
WARNING one that allows the maintenance operations
as described in this manual.
 Installations 2 , 3 and 4 permit operation but
make maintenance and inspection of the
combustion head more difficult.
D3928
5.5

Preparing the boiler

5.5.1

Introduction

The burners are suitable for working on both flame inversion boil-
ers (in this case the long head model is recommended) and boil-
ers with a combustion chamber with bottom runoff (three flue gas
circulations), from which the best results of low NO
are obtained.
The maximum thickness of the front hatch of the boiler, complete
with refractory, must not exceed the dimension indicated in
Fig. 13.
5.5.2

Boring the boiler plate

Drill holes in the plate shutting off the combustion chamber, as
illustrated in Fig. 14. The position of the threaded holes can be
marked using the thermal insulation screen supplied with the
burner.
5.5.3

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 refractory.
The lengths L available are:
Blast tube
RS 55/E BLU
For boilers with front flue passes 13)(Fig. 17), a protection in re-
fractory material 11) must be inserted between the boiler refrac-
tory 12) and the blast tube 10).
This protection must not compromise the extraction of the blast
tube.
For boilers with a water-cooled frontal, a refractory cover is not
necessary 11)-12)(Fig. 17), unless expressly requested by the
boiler manufacturer.
20068446
1 2
emissions
x
Short (mm) Long (mm)
255 390
Installation
 Any other position could compromise the cor-
 Installation 5 is prohibited for safety reasons.
DANGER
3 4
200 mm
D1079
mm
RS 55/E BLU
22 GB
rect operation of the appliance.
5
D455
A B
195 275 - 325
Fig. 12
Fig. 13
Fig. 14
C
M12
Tab. J