24
GRUPPO DI
CARICAMENTO
Instructions for the installer
3.9 SYSTEM FILLING AND EMPTYING
Once all of the connections for the system have been
set up, it is possible to fill the circuit.
To fill the system it is possible to set up a loading valve
on the system's return pipe.
EXAMPLE OF SYSTEM LOADING UNIT
A load cock must be provided on the central heating
circuit in order to fill the system, or use the optional
accessories.
The boiler is equipped with its own draining valve,
14
.
This valve must
never
be used to empty the system,
since all of the dirt contained in the system may ac-
cumulate in the boiler, jeopardising smooth operation.
Therefore, before using the draining valve, make sure
that the system’s interception cock situated under the
pump has been closed.
The system must be equipped
with its own emptying valve, of a suitable size for the
flow rate of the system.
LOADING
UNIT
