•Having started the boiler and
brought the system up to its working
temperature, stop the pump and
repeat the air bleeding operations.
• Allow the system to cool and return
the water pressure to 0,8 / 1 bar.
WARNING
The UNI CTI 8065/89 standard –
Treatment of water in domestic hea-
ting systems – determines and defi-
nes the chemical and chemical-
physical characteristics of the water
used in domestic heating systems,
and especially, “… in order to optimi-
se performance and safety, to pre-
serve these conditions over time, to
ensure long-lasting regular operation
of auxiliary equipment as well, and to
minimise energy consumption, the-
reby integrating current laws and
standards …”.
In this regard specific products must
be used that are suitable for multi-
metal plants.
Note: The boiler is fitted with a
drain stopcock at the front of the
unit that can be used to empty the
system.
3.4 Starting the Boiler
3.4.1 Preliminary Checks
Before starting the boiler it is best to
check that:
• The smoke flue has been installed
in compliance with instructions.
When the boiler is running no pro-
ducts generated by combustion
are to leak from any gaskets.
• The boiler power supply is 230 V –
50 Hz.
• The system is properly filled with
water (pressure on the water gauge
0,8 / 1 bar).
• All stopcocks in the system’s
piping are open.
• The fuel supply stopcock is open.
• There are no gas leaks.
• The external main switch is on.
• The boiler’s safety valve is not
blocked.
• There are no water leaks.
To speed up and facilitate igniting the
boiler for the first time, bleed the air
out of the gas piping using the gas
pressure valve socket.
Close the pressure socket carefully
after bleeding the system.
3.4.2 Starting Up and Switching Off
For starting up and switching off the
boiler, follow the “User’s Instructions”.
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