Riello RS 300/E LN - Securing the Burner to the Boiler; Boring the Boiler Plate; Blast Tube Length; Burner Securing

20008423
20
GB
Installation
4.6 Securing the burner to the boiler
4.6.1 Boring the boiler plate
Drill the end plate of the combustion chamber as shown in Fig. 12.
4.6.2 Blast tube length
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.
For boilers with front flue passes 1) or flame inversion cham-
bers, protective fettling in refractory material 5) must be inserted
between the boiler fettling 2) and the blast tube 4).
This protective fettling must not compromise the extraction of
the blast tube.
For boilers having a water-cooled front the refractory fettling 2)-
5)(Fig. 13) is not required unless it is expressly requested by the
boiler manufacturer.
4.6.3 Burner securing
 Create a suitable hoisting system by hooking onto the rings
3)(Fig. 13), removing the fastening screws 7) securing the
cover 8) first.
 Slip the thermal protection onto the blast tube 4) (Fig. 13).
 Place entire burner on the boiler hole (arranged previously,
see Fig. 12), and fasten with the screws given as standard
equipment.
 The coupling of the burner-boiler must be airtight.
4.6.4 Accessibility to the interior of the combustion
head
 Open burner at hinge as illustrated in Fig. 14 after releasing
the tie rod of the head movement lever 1) and removing the 4
fastening screws 2).
 Disconnect the wire 3) from the electrode.
 Disconnect the tube of ignition pilot 6).
 Unscrew the under part of the elbow 4) until it comes free of
its slot.
 Extract the internal part 5) of the combustion head.
mm A B C
RS 300/E LN 13
25
/
32”
17
51
/
64”
3
/
4”
coarse
RS 400/E LN 13
25
/
32”
17
51
/
64”
3
/
4”
coarse
RS 500/E LN 15
11
/
32”
17
51
/
64”
3
/
4”
coarse
Fig. 12
D455
D3090
Fig. 13
Fig. 14
5
36
4
1
2
D3819