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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:
G Undo screws (1) and bolts (2)
G Remove the gas pipe (G)
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.
Model
25 NS
29 NS
25 NS
29 NS
2
Gas type
Min
NATURAL
8,8
GAS
G20 - 20 mbar
B / P
9,8
G30 - 30 mbar
G31 - 37 mbar
G
1
CO
%
Flow-rate
2
Max
m
2,62
9,0
3,05
0,765
1,01
10,0
0,877
1,15
GS
Burner
jet
3
/h
Ø mm
4,9
5,4
(G30)
3,8
(G31)
(G30)
4,2
(G31)
74
Air
Calorific
diaphragm
value (*)
Ø mm
Kcal/h
21,0
8.550
23,5
29.330
21,0
22.360
29.330
23,5
22.360
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