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Available with open vessel - Widro 85 and closed vessel - Widro 85 CS.
only for Widro 85 CS
INTRODUCING THE RANGE
IN ITALY:
• ONLY THERMO-FIREPLACES WITH COIL CON-
TROLLED BY VST THERMAL DISCHARGE VALVE (not
included) CAN BE INSTALLED WITH A CLOSED-VESSEL
SYSTEM
For installations with closed vessel:
• Correct installation of the system is the responsibility
of the installer who shall take into consideration local
Fig. 1
regulations.
The thermal discharge valve must be connected to the
cooling circuit with a pressure of at least 1.5 bar.
AL = coil supply, always pressurised (minimum) 1.5 bar
VST = thermal discharge valve
S = discharge
Fig. 2
• The system must have another dedicated expansion
vessel for the thermo-fireplace, selected on the basis of
the volume of water in the system itself.
USER/INSTALLER
The valve (not included) may
be installed as desired on any one of the
coil connectors.
5
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