Function Extensions

The function of the integral Vitotronic can be extended with the following accessories:

• Internal extension H1 or H2 are fitted into the Vitotronic and each performs a safety function plus one additional function (see description).
• H1 Extension; An external safety solenoid valve can be connected
• H2 Extension; Can be used for interlocking external extractors
• Only one internal extension can be fitted into the Vitotronic./li>
• Where additional functions are required for the heating system, use extensions AM1 or EA1 (see description)
• One internal extension can be combined with one further extension.

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