DE DIETRICH ALEZIO AWHP-V220 - Manual (Page 24)

4
Open and close the radiator valves several times a year (this
prevents the valves from seizing up).
4
Clean the outside of the heat pump using a damp cloth and a mild
detergent.
CAUTION
Only qualified professionals are permitted to clean the
inside of the appliance.
5.3 Top up the installation with water
If necessary, top up the water level in the heating system
(recommended hydraulic pressure between 1.5 and 2 bar).
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 heat pump in shutdown/frost protection mode.
¼See chapter: "Changing the operating mode", page 17.
4. Open the filling valve .
5. Close the filling valve when the pressure gauge shows a pressure
of 1,5 bar.
6. Put the heat pump in heating mode.
¼See chapter: "Changing the operating mode", page 17.
7. When the pump has stopped, bleed again and top up the water
pressure.
Filling and bleeding the installation 2 times 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 fitter.
5.4 Bleeding the heating system
It is essential that you bleed any air in the calorifier, the conduits or
the taps to prevent the annoying noises likely to be produced during
heating or when tapping water.
5.4.1. Manual venting
1. Open the valves on all radiators connected to the heating system.
2. Put the heat pump in shutdown/frost protection mode.
¼See chapter: "Changing the operating mode", page 17
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5. Checking and maintenance AWHP-V220
23 23/04/2013 - 300026802-001-03