Filling The Installation - DeDietrich AFC 18 User Manual

Fig.29
7.4

Filling the installation

Fig.30
2
3
5
6
8
10
300026440 - v06 - 07082018
3. Open and close the radiator valves several times a year (this prevents
the valves from seizing up).
4. Clean the outside of the boiler using a damp cloth and a light
detergent.
T000181-B
1. Check the installation's water pressure shown on the control panel
display.
2. Open the valves on all radiators connected to the heating system.
3. Set the room thermostat to as low a temperature as possible.
4. Wait until the temperature drops below 40 °C and the radiators seem
cold before filling the central heating system.
4 5. To add water, use the filling tube with a valve fitting, a cloth and a
bleed key.
6. Connect the filling tube to a cold water tap.
7. Eliminate the air from the filling tube. Slowly fill the tube with water.
Hold the end of the tube up, above a bucket. Turn off the tap as soon
as water runs out of the pipe.
8. Unscrew the plug from the filling/draw-off valve.
9. Attach the tube to the filling/draw-off valve. Firmly tighten the nut on
the filling tube.
10. Open the filling/draw-off valve on the heating system.
11. Open the running water tap.
12. Check the installation's water pressure shown on the control panel
display.
13. Close the water tap when the water pressure reaches 2 bar.
7
14. Close the filling/draw-off valve on the heating system. Leave the tube
on the filling/draw-off valve until the air is vented from the installation.
9
15. After filling the installation, switch the boiler on.
14
AD-3000483-A
Caution
Only a qualified professional is authorised to clean the inside of
the boiler.
Important
If the water pressure is lower than 0.8 bar, top up the water level
in the heating installation (recommended hydraulic pressure
between 1.5 and 2 bar).
Important
When water is added, air gets into the heating system. Vent the
installation. After the air has been vented, the water pressure can
drop below the required level. Check the installation's water
pressure shown on the control panel display. If the water pressure
is lower than 0.8 bar, add more water.
7 Maintenance
AFC 27