CITY 1.24 and 2.24 GN CITY 1.24 and 2.24 B/P

8. COMMISSIONING
Commissioning must be carried out by a qualified
professional
8.1 Pre-commissioning checks
- Check on the boiler label that it is set up for the gas
in use.
- If not, see chapter 9 “Modification to use a different
gas”.
- Open the gas valve 3.
- Take out the 2 fixing screws at the sides and swing
the control panel forward.
- Check the pressure of the gas supply to the boiler
at the pressure offtake on the gas valve (33) against
the information plate.
- Close the gas pressure offtake screw.
- Check for gas and water leaks.
Return the control panel to its original position and
replace the 2 fixing screws at the sides.
8.2 Switching on the boiler
Check the 3-position switch G is set to “off/anti-freeze”
and then switch on the boiler by plugging in the
plug or operating the isolating switch.
8.3 Filling the installation with water
- Open valves 1-2*-4* and 5.
- Check that the automatic bleeder 21 at the top of the
expansion tank is open.
- Fill the installation to a pressure of 1.5 to 2 bars via
valves 38.1 and 38.2.
- Close valves 38.1 and 38.2 when the installation
has been filled with water.
* CITY with domestic hot water production.
8.4 Igniting the boiler
- Set the switch to the position marked .
- If there is a room thermostat or a communicating
remote controller, set it to call for heat.
16
33
38.1
G
38.2 1
2*
4*
3
8666N180
8666N096
5 8666N098 B
8666N097