Technical data
Installation, user and maintenance manual – GAHP-A
65
complete the change of gas type by checking that all gas connections are sealed, 14.
including those not directly aected by this operation (using soapy water or an-
other suitable method).
Now check and adjust the combustion parameters as indicated in the respective 15.
paragraph.
Figure 6.2 – Gas changeover
Gas changeover
LEGEND
A Gas valve
B
O-ring
C O-ring
D Gas nozzle
E
Fixing screws
F Red silicon pipe
G Fixing screws
H Manual reset fumes thermostat
M
Sticker stating type of gas for
which appliance is congured
Table 6.2 – Gas nozzles and content of CO2
Gas type G20 G25 G25.1 G27 G2.350 G30 G31
Nozzle code 180 181 181 187 184 182 183
Nozzle diameter 4,7 5,2 5,2 5,4 5,9 3,4 3,6
Content CO2 with MAX modulation 9,1% 9,2% 10,1% 9,0% 9,0% 10,4% 9,8%
Delta CO2 between Max and Min potential 0,4 0,6 0,8 0,5 0,5 0,5 0,4