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9-HYDRAULIC CONNECTION
procedure;
• let the system cool down and, if necessary, bring the water pressure back to 1 bar (this only applies to closed vessel systems - refer to
any existing local regulations or standards allowing for its installation); for open vessel systems, the water is topped up automatically
through the vessel itself;
NOTE
In systems with a closed vessel, where possible, the water pressure in the heating system must not be lower than 1
bar when the system is at room temperature; if this is not the case, use the tap to fill the system This operation must
be performed when the system is cool.
The pressure gauge on the system enables you to read the pressure in the circuit.
During this operation, any air in the system is released from the automatic vent valve located at the top of the body of the boiler.
The valve is underneath the front panel, just lift the cover.
To ensure the valve vents, loosen the side cap (see figure)
The filling pressure of the system
WHEN COLD
must be 1 bar.
Upon completion of this operation,
always
close the filling tap.
THERMOSTATIC DIVERTER VALVE (COMPULSORY)
The automatic thermostatic diverter valve is used in solid fuel boilers to prevent the return of cold water into the exchanger which would
cause condensation to form.
The prolonged formation of condensation irreparably damages the heat exchanger.
The lack of a device to prevent this invalidates the guarantee.
A higher return temperature reduces the formation of condensation of the fumes and extends the life of the boiler.
Valves available offer various calibrations. RED recommends the model (see accessories list) at 55°C with hydraulic connections of 1”. Once
the calibration temperature is reached, the valve opens thereby supplying hot water to the system.
RELIEF VALVE
