Function Blocks - Viessmann VITOSOLIC 200 Installation And Service Instructions Manual

Function description

Function blocks

■ If the relays 3, 6 and 7 have not been
assigned by the scheme ("System"),
they could, for example, be used for
the Function blocks 1 to 3 (see the
table for the respective system from
page 95).
■ Within a function block, there are 4
functions that can be combined as
required:
– 2 thermostat functions
– 1 temperature differential control
– 1 time switch with three periods that
can be activated
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■ In the delivered condition, certain sen-
sors are assigned to these functions
(Reference sensors). These sensors
can be switched, i.e. sensors already
used can be used for additional func-
tions (see page 161).
■ Make all settings in menu "System"
(see from page 158).
A relay assigned to a function block will
only switch if the conditions of all acti-
vated functions are met. These func-
tions act like individual switches in a
serial circuit (see the following dia-
gram).