Aertesi VESTA 80 FVI, Instruction, Operating And Maintenance Manual

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I
FILLING AND EMPTYING THE SYSTEM
FILLING
- Before filling the system set the mains breaker switch
to “off”.
- Check to ensure that the circuit drain cock is closed.
VESTA 80
FVI
are internally equipped with a
manually operated valve that serves to bleed air
from the pre and post-treatment coils.
This operation is possible for VESTA 80 H by acting
directly (using a screwdriver) on the water outlet
connection from the coils (which is equipped with a
specific air bleed screw).
- Start filling the circuit by gradually opening the
system water supply cock located externally to the
appliance
- When water starts to flow from the appliance bleed
valves, close them and continue filling up to the
pressure value specified for the system.
Check that the hydraulic unions are watertight.
This operation should be repeated after the
appliance has been in operation for several
hours; it is also advisable to periodically check
the system pressure value.
ON
OFF
VESTA 80 H
I
EMPTYING
- Before emptying the system set the mains breaker
switch to “off”
- Check to ensure that the circuit filling cock is closed
- Open the circuit drain cock and all the bleed valves
of the fan coils.
If the circuit contains antifreeze, it should not be
drained freely because these chemicals are
classified as pollutants. The contents of the circuit
should be collected and reused if possible.
ON
OFF
VESTA 80
FVI
19