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2.8.
Filling the system.
When starting up the system, make sure that the hydraulic unit lockshield is
open. If there is no electric power and the thermo-valve has already been
powered use the special cap to press the valve stopper to open it.
2.9.
Evacuating air while filling the system.
- Open all the system interception devices (manual or automatic);
- Start the filling by slowly opening the system water filling tap;
- Take a screwdriver and act on the highest air relief valve of the battery
(water heat exchanger);
- When water starts coming out of the air relief valves of the appliance, close
them and continue filling until reaching the nominal value set up for the
system.
Check the hydraulic sealing of the junctions.
It is recommended to repeat these operations after the appliance has
been running for a few hours and periodically check the pressure of the
system.
Venting of the heat exchanger