Atlantic WOYG112LHT, Installation And Commissioning Instructions

Page: 37 / 92

4 .5 Gas change
"
WARNING
The gas generator is preset in the factory to
G31 propane gas, domestic supply pressure:
37 mbar .
• For use with G25 natural gas, domestic supply
pressure: 25 mbar (Groninguen gas type), it is
compulsory to remove the diaphragm on the gas
valve outlet.
• For use with G20 natural gas, domestic supply
pressure: 20 mbar, it is compulsory to replace
the diaphragm on the gas valve outlet (optional
conversion kit).
This operation must be carried out by a qualified
professional.
- Dismantle the connector on the gas valve outlet.
- Remove the diaphragm in place and replace it with the
model indicated in the table below.
- Position the diaphragm in the gasket's throat.
- Restore the connector.
- Carry out a combustion check (see para. "Setting
the combustion parameters during a gas check",
page 49 ).
Gas Diaphragm
marker
CO
2
at min
CO
2
at max
G 20
20 8 to 9 % 8.5 to 9.5 %
G 25 no diaphragm 8 to 9 % 8.5 to 9.5 %
G 31 conical 9.5 to 10.5 % 10 to 11 %
"
The CO
2
max must always be higher than or
equal to 0 .5% compared to the CO
2
mini .
Paste the gas setting label provided with the conversion
kit
4 .6 Connection of the fuel supply
The appliance must be connected to the gas distribution
network according to current regulations:
The pipe diameter will be calculated according to the
network's rates and pressure.
Place a gas stop tap near the boiler.
G20 G31
figure 33 - Access to the diaphragm
figure 34 - Gas valve diaphragm
Gas valve outlet
connector
Installation and commissioning instructions "1485 - EN" - 37 -
Heat pump alféa hybrid duo gas