Unical KUTter R 28, Installation And Servicing Manual

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- make sure that all the connections are watertight.
- after commissioning the boiler (see par. 3.10) and
bringing the system to the operating temperature,
stop the boiler and repeat the air bleed operations.
- let the system cool down and, if necessary, return
the water pressure to 0.8/1 bar.
(See par. 4.4).
When the system connections have been completed,
the circuit can be filled.
This operation must be performed carefully, respect-
ing the following phases:
- open the radiator vent valves and make sure the
automatic valve is working properly in the boiler.
- open the cold water inlet ReF (only kutter B)
open the filling tap Rc gradually making sure that
the automatic air release valves installed on the
system work properly.
- close the radiator air release valves as soon as
water comes out.
- check the pressure gauge until pressure reaches
approximately 0.8/1 bar.
- close the filling tap
Rc
and bleed air once again
through the radiator air release valves.
KUTTter b KUTter R
Attention!
Do not mix the heating water with in-
correct concentrations of antifreeze or
anti-corrosion substances! This could
damage the gaskets and cause noise
during operation.
The manufacturer will not be held lia-
ble for damage to persons, animals or
objects due to failure to comply with
the above instruction.
3.8 - fILLINg THE SYSTEM