Saturn KDB - 161 GOM Manual page 81

No 3
Unplug the boiler from the electric outlet and open the external cover.
Close the main gas valve installed on the gas supply pipe outside the boiler.
Loosen the flexible part connected to the gas inlet connection using manual tools (monkey spanner/group joint
plier).
Separate the four electric inlet wires connected to the gas control valve.
Separate the six wires connected to the gas control valve (4 ON-OFF valve, 2 proportional control valves ).
Separate the gas control valve and the nozzle by unscrewing the two screws connecting them.
Separate the board holding the ignition transformer and the air pressure switch from the nozzle by unscrewing
one screw.
Separate the gas control valve from the boiler.
Fix the gas control valve to the external base.
Screw the four screws fixing the gas control valve to the external base.
Screw the two screws connecting the nozzle and the gas control valve (*check for the existence or
nonexistence of O-ring when connecting).
Assemble the parts making sure there is no gas leak.
Open the main gas valve.
Connect the six wires of the gas control valve correctly.
Fix the board holding the ignition transformer and the air pressure switch to the nozzle by screwing one screw.
Plug the boiler to the electric outlet.
1. Check whether the gas pipe connecting O-ring is correctly assembled.
2. Make sure not to switch the color of the connection terminals.
3. Perform a gas leak test using soap foam after assembly.
Part name
Replacement steps
Caution
- 81 -
KDB-GOM
Modulating gas control valve
Series