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Viessmann Cascade control unit - Functions; Operating Conditions

Viessmann Cascade control unit
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17
Functions
Operating conditions
You can scan the operating conditions from the "Operating details" menu in
the "Multi-boiler control unit" function area (see pageĂ15).
The following operating conditions may apply:
H Standard mode (standard room temperature, e.g. day)
H Reduced mode (reduced room temperature, e.g. night)
H Holiday mode (reduced room temperature, e.g. holiday periods)
H Standby mode (the system is not operational)
H Fault
Subject to the current operating state, certain components are either
operational or not, and those set values which control the various functions
therefore change.
Set room temperatures can be adjusted in the "Set values" menu (see
pageĂ16).
In some cases, the reason for the prevailing operating condition will be
displayed, e.g.
"External demand": The control unit is in standard mode, as the
"External demand" function is active.
Displaying the control state (Status display)
The following status indications can be displayed:
Multi-boiler control unit
Display of set flow and actual flow temperatures.
This is displayed if there is a fault.
5862Ă474ĂGB
Flow 20ºC
Actual 20ºC
Status display
fault

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