5 Commissioning
Installation manual
25
D2C18ND0 D2HND012/18A5AA
Wall-mounted condensing boiler
3P469346-9J – 2018.05
4.10
Converting for use with a different
type of gas
WARNING
Gas conversion operation can only be carried out by
qualified competent persons.
DANGER
Isolate the boiler from the power mains before gas
conversion operation.
4.10.1
To convert the system for use with a
different type of gas
1
Open the front cover of the unit as described in this manual.
2
To set natural gas, adjust screw on the gas valve to position "1".
3
To set LPG, adjust the screw to position "2".
4
Mount the front cover, connect the unit to the main power
supply.
4.10.2
To modify settings for gas conversion
1
Enter the menu section from the user interface. Select service
settings by using the left dial.
2
Press the "Enter" button and choose the password by using the
right dial and press the "Enter" button again.
3
Choose "C" parameters via left dial and press the "Enter"
button.
4
Choose "CE" and press the "Enter" button. It will ask for
password again. Choose the password and press the "Enter"
button.
5
Choose "C0" and press the "Enter" button.
6
To convert to LPG, choose "1" with the right dial and press the
"Enter" button, To convert to Natural gas, choose "0" with the
right dial and press the "Enter" button.
7
Leave the menu screen and go back to the home screen by
using the "Back" button.
INFORMATION
Only qualified persons have access to servicing
parameters. The passwords needed to access service
parameters are written in servicing instructions.
INFORMATION
When a conversion is performed, the identification label
shall be marked to show the gas type in use.
5
Commissioning
WARNING
Only qualified persons should conduct commissioning.
CAUTION
Preliminary electrical system checks such as earth
continuity, polarity, resistance to earth and short circuit
must be carried out by using a suitable test meter by a
competent person.
5.1
To fill the condensate trap
INFORMATION
Water must be poured into the
inner
tube.
Fill the condensate trap by pouring 0.2 litres of water from the boiler
flue outlet.
5.2
Gas-air ratio: No need to adjust
The installer does not have to adjust the gas-air ratio, because the
boiler has an electronic gas adaptive feature.
5.3
To check for gas leakage
DANGER
Before passing next steps, this control must be fulfilled.
1
Before connecting the unit to power mains, close valves 1, 2
and 3.
2
Connect a manometer to gas counter.
3
Open valves 1, 2 and 3.
4
Close valve 1.
5
Note the manometer measurement and wait for 10 minutes.
6
After 10 minutes, compare the manometer measurement with
the initial value. If the pressure is decreased, it means there is
gas leakage. Check the gas line and fittings.
7
Repeat this process until being sure that there is no leakage.
8
Close valve 1, remove the manometer and open valve 1 again.
1
2
3
