CLIMAVENETA BRA2 0021, Installation, User And Maintenance Manual

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BRA2 - BRN2 EN
FILLING THE SYSTEM
- Before filling, check that the system drain valve is closed.
- Open all system and terminal air vents.
- Open system shut off valves.
- Start filling by slowly opening the system water fill cock
outside the unit.
- When water begins to leak out of the terminal air vent
valves, close them and continue filling until the pressure
gauge indicates a pressure of 1.5 bar.
The system must be filled to a pressure of between 1
and 2 bars.
It is recommended that this operation be repeated after
the unit has been operating for a number of hours. The
pressure of the system should be checked regularly and
if it drops below 1 bar, the water content should be
topped-up.
Check the tightness of the joints.
EMPTYING THE SYSTEM
- Before emptying, place the mains switch in the “off” posi-
tion.
- Make sure the system fill/top-up water cock is closed.
- Open the drain cock outside the unit and all the system
and terminal air vent valves.
If the fluid in the circuit contains antifreeze, it should
not be allowed to drain freely, as it is pollutant.It should
be collected for possible reuse.When draining after heat
pump operation, take care as the water may be hot (up
to 50°).