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9
Maintenance
9.1
General
9.2
Maintenance instructions
7642056 - v05 - 30012017
We recommend having the boiler inspected and serviced at regular inter
vals.
Caution
Do not neglect to service the boiler. Contact a qualified professio
nal or take out a maintenance contract for the obligatory annual
servicing of the boiler.
Failure to service the appliance voids the warranty.
Caution
Have an inspection carried out and the flues swept at least once a
year or more, depending on the regulations in force in your coun
try.
Caution
Only qualified professionals are authorised to carry out mainte
nance work on the boiler and the heating system.
Caution
After maintenance or repair work, check the entire heating system
to ensure that there are no leaks.
Caution
Only genuine spare parts may be used.
9.2.1
Check the hydraulic pressure
1. Check the hydraulic pressure in the installation.
Caution
If the hydraulic pressure is lower than 0.08 MPa (0.8 bar), more
water should be added. Top up the water level in the heating in
stallation to reach a hydraulic pressure of between 0.15 and 0.2
MPa (1.5 and 2.0 bar).
2. Carry out a visual check for any water leaks.
9.2.2
Topping up the installation with water
1. Open the valves on all radiators connected to the heating system.
2. Set the room thermostat to as low a temperature as possible.
3. Put the boiler in shut-down/frost protection mode.
4. Open the fill valve.
5. Close the filling valve when the pressure gauge shows a pressure of
0.15 MPa (1.5 bar).
6. Put the boiler in heating mode.
7. When the pump has stopped, vent again and top up the water pres
sure.
Note
Filling and venting the installation twice a year should be sufficient
to obtain an adequate hydraulic pressure. If it is often necessary
to top up the installation with water, contact your installer.
9 Maintenance
EFU C
33
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