19
Switching on
1. Check that pressure in central heating system is above 0.7 bar and below 1.5 bar with the pressure gauge 16.
2. Check that the gas service tap is opened at the gasmeter and main power is on. Green indicator
Power ON
33.
3. Open the gas tap
39 (fig.21).
The boiler is now ready to use.
Attention ! If the boiler stays a long time without working, some air in the gas pipe can hinder the first lightings. (please refer
to paragraph 18 Incorrect Function)
Switching on Central heating
Press on key 29
, the green indicator 30 will light and the display will show the Heating
flow temperature.
Keys 31
and 32
allow to adjust the temperature required in the Central Heating
system regarding the weather conditions.
• press
to increase temperature when weather is cold
• press
to reduce temperature when weather is fair
During the temperature setting operation the display will flash.
If the room thermostat is calling for heat, a dot will be displayed at the bottom of the 3rd digit
Switching on the Domestic Hot water
Press on key 25
, the green indicator 26 will light :
If there is no water demand
the display will show the following graphic
In case of draw off
a square made of 4 digits will move clockwise on the display
Keys
27
and 28
allow to adjust the temperature required for the Domestic Hot Water flow. During the temperature
setting operation the display will flash.
Note : The configuration of CH system can generate some gravity effect when the boiler is set in DHW mode only. It may
result a temperature rise of the heating pipes close to the boiler (or eventually a radiator). To avoid that, it is possible to close
during summer period (Central Heating switched off) the heating flow isolating tap (
37 fig. 21). Don’t forget to open it when you
will switch on the Central Heating mode again.
13
Switching on the Domestic Hot water and Central Heatingh together
Press on key 29
the green indicator 30 will light.
Press on key 25
the green indicator 26 will light.
If there is no water demand
the display will show the heating flow temperature
In case of draw off
a square made of 4 digits will move clockwise on the display
How to Use
Summary of Contents for Centora green 24 Nat
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