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Water treatment is highly recommended in the following cases:
1 - Very hard water.
2 - Large systems.
3 - Frequent fillings due to leakages.
4 - Re-filling after system maintenance.
For water analysis and treatment, contact specialised centres.
It is also advisable to periodically check the scale conditions of the range.
10.13
FILLING THE SYSTEM
After the water connections have been made, proceed to fill the system.
Open all the air bleeder valves on the radiators.
Gradually open the inlet cock, making sure that the automatic air release valves (if present) operate correctly.
Close the air release valves when water comes out. Use the manometer to check that the system is pressurised.
Close the inlet cock and again release air through the air release valves. Start the water circulating pump or
pumps to check for correct operation.
10.14
CONNECTING THE SAFETY HEAT EXCHANGER (OPTIONAL)
Solid fuel burning systems must be installed with the safety devices provided for in the relevant regulations in
force (see HYDRAULIC CONNECTION DIAGRAMS page 19).
The boilers are therefore fitted with safety heat exchangers.
The safety exchanger is connected to the water and drainage systems by means of a thermal release valve
(VST) with its temperature sensor (SV) fitted in the seat provided.
10.15
POWERING OF BOILER
1 - Qualified technicians must verify that the power of heaters is matching the required calories of the heating
system. This is important because the wooden boilers need to sell out the burned calories to avoid the ebullition
and long halt of the ventilator, which in absence of combustion, leads the firewood to form acid condensed
which are hurtful for the heater.
2 - In case the boiler is over powered it is absolutely necessary to install a heat accumulator.
10.16
GENERAL INSTALLATION
POS.1
POS.2
DEMETRA
20 cm
DEMETRA
Fig. 24 - General installation
POS.3
POS.4
0 cm
100 cm
POS.5
POS.6
30 cm
50 cm
EN
23
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