Burner Description - Riello RS 190/M Installation, Use And Maintenance Instructions

3.8

Burner description

11
Key (Fig. 4)
1 Combustion head
2 Ignition electrode
3 Screw for combustion head adjustment
4 High gas pressure switch
5 Sleeve
6 Servomotor controlling the gas butterfly valve and the air
damper (by means of a variable profile cam mechanism).
When the burner is stopped the air damper is fully closed in
order to reduce heat dispersion from the boiler due to the flue
draught which draws air from the fan suction inlet.
7 Flame stability disk
8 Gas butterfly valve
9 Motor contactor and thermal relay with reset button
10 Power switch for different operations:
- Automatic-manual-OFF operation;
- Power increase / power reduction button.
Technical description of the burner
16
13
20
21
9 10
14
15 24
12
22
23 8
5
12
4
3 2
17
18 19
16
11 Terminal strip
12 Pilot burner attachment
13 Control box
14 Flame inspection window
15 Low air pressure switch (differential operating type)
16 Slide bars for opening the burner and inspecting the combus-
tion head
17 Gas pressure test point and head fixing screw
18 Air pressure test point
19 Flame sensor probe (flame rod)
20 Air damper
21 Air inlet to fan
22 Screws securing fan to sleeve
23 Gas input pipework
24 Ionisation probe cable, plug socket
11 GB
20161406
7
1
Fig. 4
20160742