CITY 1.24 and 2.24 GN CITY 1.24 and 2.24 B/P
CITY 1.24 and 2.24 GN CITY 1.24 and 2.24 B/P
CITY 1.24 and 2.24 GN CITY 1.24 and 2.24 B/P
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9. MODIFICATION TO USE DIFFERENT GAS<br />
<strong>CITY</strong> <strong>2.24</strong> <strong>GN</strong> <strong>and</strong> <strong>1.24</strong> <strong>GN</strong> boilers are equipped to<br />
use natural gas. <strong>CITY</strong> <strong>2.24</strong> B/P <strong>and</strong> <strong>1.24</strong> B/P boilers<br />
are equipped to use butane/propane.<br />
The procedure from changing from one gas to the<br />
other is as follows:<br />
9.1 Removing the burner<br />
9.2 Replacing the injectors<br />
9.3 Replacing the diaphragm<br />
9.4 Replacing the gas assembly modulator<br />
9.5 Reassembling<br />
9.6 Adjusting the minimum pressure<br />
9.7 “Gas type” label<br />
9.1 Removing the burner<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
Disconnect the electrical output supply<br />
<strong>and</strong> the gas supply from the boiler.<br />
Remove the front panel from the boiler casing (2<br />
screws at the top).<br />
Remove the front plate from the combustion<br />
chamber (2 screws at the top + 2 wing-nuts).<br />
Disconnect the 2 igniter electrodes.<br />
Disconnect the wire from the ionisation sensor.<br />
Remove the anti-radiation plate by pulling it<br />
forwards.<br />
Unscrew the 3/4” nut at the top of the gas<br />
valve.<br />
Unscrew the 4 screws fixing the burner to the<br />
manifold. Use a magnetic screwdriver if possible.<br />
Remove the burner, the diaphragm <strong>and</strong> the 2<br />
seals.<br />
21<br />
8<br />
8666N178<br />
3<br />
5<br />
The operations described below<br />
must be carried out by a qualified<br />
professional.<br />
1<br />
2<br />
4<br />
7<br />
6<br />
8666N177
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