Viessmann OpenTherm - Introduction; Control Unit Function Modes

11
Your heating contractor set the function
mode during commissioning.
Two function modes are possible:
■ Room temperature-dependent opera-
tion: If no outside temperature sensor
and no heating circuit with mixer is
connected, function mode "ROOM-
CONTROL" must be selected.
■ Weather-compensated operation: If
an outside temperature sensor and a
heating circuit with mixer are connec-
ted, function mode "OT CONTROL"
must be selected.
The settings you can make vary
depending on the function mode selec-
ted.
Note
DHW heating is active continuously or
in accordance with the set switching
times, regardless of the function mode
set.
Function mode set by the heating
contractor
=
"ROOM-CONTROL" (room tem-
perature-dependent operation)
=
"OT CONTROL" (weather-com-
pensated operation)
Note
You will have to select the function
mode again following a reset.
Introductory information
Control unit function modes
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