Cylinder Temperature Limit; Cylinder Priority Control - Viessmann VITOSOLIC 200 Installation And Service Instructions Manual

Cylinder temperature control
The solar circuit pump stops; cylinder
heating terminates in accordance with
the following criteria:
■ When the selected stop temperature
differential "ΔToff" is not reached.
■ The corresponding consumer is
blocked (sensor faulty or high limit
temperature of 90 °C is reached).
■ The collector array concerned is
blocked (collector temperature sensor
faulty or the temperature for an emer-
gency shutdown of the collector "Tco-
lemoff" (see page 154) has been
reached.
■ Set cylinder temperature "Tcyl set"
(see page 151) has been reached.

Cylinder temperature limit

When the set temperature "Tcyl set"
has been exceeded (see page 151) the
corresponding circulation pump stops to
prevent the consumer overheating. If the
consumer cools down by more than "ΔT-
Cylset", it will be heated again by the
solar thermal system.
A safety shutdown occurs when the
safety temperature of 90 °C has been
reached.

Cylinder priority control

The consumers are heated up in numer-
ical sequence, until the respective set
temperature "Tcyl set" has been
reached.
(cont.)
Make the following settings at the
solar control unit:
Main menu
■ "Solar"
■ "Setting values"
– "ΔTon"/"ΔToff"
Set a value.
Make the following settings at the
solar control unit:
Main menu
■ "Solar"
■ "Contractor"
– "ΔT-Cylset"
Set a value.
Note
Consumers with the same priority value
are heated up simultaneously. We can-
not recommend this setting.
Function description
117