Burner Description; Burner Equipment - Riello G490 MXK Installation, Use And Maintenance Instructions

3.5

Burner description

1
20079494
8
1 Combustion head
2 Ignition electrode
3 Flame sensor probe
4 Gas valve
5 Air/gas mixer in the suction line circuit
6 Gas pressure test point
7 Gas valve conduit - Venturi
8 Gas input
9 Boiler fixing flange
10 Fan
11 Air passage in fan
12 Control box with lockout pilot light
3.6

Burner equipment

Flange for gas train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Flange fixing screws M 5 x 16 . . . . . . . . . . . . . . . . . . . . . . No. 4
Insulating gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Gas valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Instruction booklet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Technical description of the burner
2
3
4
13
6
7
5
16
9
11
10
15
13 Reset button
14 Plug-socket on ionisation probe cable
15 Terminal board
16 Transformer
17 Plate with four hole knock-outs for electrical cable routing
18 Suppressor
Burner lockout may occur.
 Control box lockout: if the control box
13)(Fig. 2) push-button lights up, it indicates
that the burner is in lockout. Press the push
WARNING
button to reset.
Hardware for burner assembly:
8 x 50 Stainless steel nuts (with or without point). . . . . . . . No. 4
8 x 16 zinc-plated washers . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
8 zinc-plated serrated washers. . . . . . . . . . . . . . . . . . . . . . No. 4
M8 Zinc-plated nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
7 GB
14
12
18
17
11
Fig. 2
20113083