Preparing The Boiler; 4.12.1 Boring The Boiler Plate; 4.12.2 Blast Tube Length; Boiler Fixing - Riello DB 20 SM HS C03 TC A0 FS1 FB T150 Installation, Use And Maintenance Instructions

4.12

Preparing the boiler

4.12.1 Boring the boiler plate

Pierce the closing plate of the combustion chamber, as in Fig. 8.
The position of the threaded holes can be marked using the ther-
mal insulation screen supplied with the burner.

4.12.2 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.
For boilers with front flue passes (Fig. 9), or with a flame inver-
sion chamber, a protection in refractory material must be made to
allow the blast tube to be extracted.
For boilers with a water-cooled frontal, a refractory lining is not
necessary unless expressly requested of the boiler manufactur-
er.
4.13

Boiler fixing

The picture Fig. 9 indicates how to attach the burner to a boiler
equipped with a non-cooled frontal piece.
It is recommended that the head protrusion should not exceed
200 mm. However, the refractory wall must not extend beyond
the end of the combustion head of the burner.
mm
MIN. 360
MAX 560
The seal between burner and boiler must be
airtight.
WARNING
Technical description of the burner
13 GB
6 2 0 D B 2 0
5 6 0 D B 1 6
7 0 0
D3893
20112484
Fig. 8
REFRACTORY
5 6 0
Fig. 9
20111775