74
TRANSFORMATION NATURAL GAS - B/P
If the boiler is to be converted from natural gas to LPG (or vice-versa), use only original conversion kits.
For the conversion proceed as follows:
●
Undo screws (1) and bolts (2)
●
Remove the gas pipe (G)
●
Unscrew the gas jet (GS) and
replace by the new one
Gas valve calibration must be effected as indicated at page 72 and considering the data indicated in the
following table.
29 NS
25 NS
29 NS
25 NS
Model
Gas type
Min
Max
m
3
/h
2,62
Flow-rate
Ø mm
4,9
5,4
3,8
4,2
Burner
jet
Ø mm
21,0
23,5
21,0
23,5
Air
diaphragm
Calorific
value (*)
3,05
0,765
(G30)
1,01
(G31)
0,877
(G30)
1,15
(G31)
Kcal/h
8.550
29.330
22.360
29.330
22.360
8,8
9,0
9,8
10,0
CO
2
%
NATURAL
GAS
G20 - 20 mbar
B / P
G30 - 30 mbar
G31 - 37 mbar
2
G
GS
1