Filling The Boiler; Turning Off The Boiler; Gas Change; Prolonged Standstill Of The System. Frost Protection - Baxi Luna 3 Avant Series Instructions For The User And The Installer

GB
HU
IMPORTANT: Regularly check that the pressure displayed by the pressostat (fi gure 3) is 0.7 to 1.5 bar, with boiler not op-
erating. In case of overpressure, open the boiler drain valve.
In case the pressure is lower open the boiler fi lling tap.
CZ
We recommend you open the tap very slowly in order to let off the air.
During this operation, the gas boiler must be in "OFF" mode (press the
Figure 3
The electric supply to the boiler must be removed in order to switch it OFF.
With the gas boiler in "OFF" mode (section 3.2), the display reads out "OFF" but the main board is still supplied.
These boilers set for natural gas can be converted to work with LPG.
Any gas change must be effected by a Qualifi ed Service Engineer.

8. PROLONGED STANDSTILL OF THE SYSTEM. FROST PROTECTION

We recommend you avoid draining the whole system as water replacements engender purposeless and harmful limestone
deposits inside the boiler and on the heating elements. In case the boiler is not operated during wintertime and is therefore
exposed to danger of frost we suggest you add some specifi c-purpose anti-freeze to the water contained in the system
(e.g.: propylene glycole coupled with corrosion and scaling inhibitors).
The electronic management of boilers includes a "frost protection" function in the central heating system which operates
the burner to reach a heating fl ow temperature of 30° C when the system heating fl ow temperature drops below 5°C.
The frost protection function is enabled if:
* electrical supply to the boiler is on;
* the gas service cock is open;
* the system pressure is as required;
* the boiler is not blocked.
925.492.2 BAXI - 925.200.1

5. FILLING THE BOILER

Filling tap
M anometer
D rain point

6. TURNING OFF THE BOILER

7. GAS CHANGE

button - See section 3.2).
INSTRUCTIONS PERTAINING TO THE USER
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