Viessmann VITOCAL 222-G Fiche technique télécharger pdf (Page 148)

The heating limit temperature defines the value of the outside temperature

below which central heating commences.

The heating limit temperature is the result of the selected set room temperature

less the value entered under "Heating limit < T room".

Example:

The selected set room temperature is 20 °C, the value entered under "Heating

limit < T room" is 4.0 K.

Central heating commences if the average outside temperature drops below

16 °C (heating limit temperature).

If the outside temperature exceeds 18 °C, central heating is adjusted because

of the specified hysteresis of 2 K.

A Set room temperature

B Outside temperature

C Selected value "Heating limit < T

room"

D Heating OFF

E Heating ON

Access

"Device settings"

"Programming"

"System definition"

"Heating limit < T room"

(1/!)

Standard setting 4 K

Setting range 0 to 20 K

Temperature limit for reduced temperature mode

The "reduced" temperature mode (see operating instructions) will no longer be

used, if the average outside temperature falls below the temperature limit

selected here. The equipment heats up to the temperature selected for standard

operation.

Operation will continue in accordance with the selected switching times, if the

average outside temperature stays above this temperature limit.

Heating limit < T room (heating limit temperature)

148

Control unit settings – system definition

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Viessmann VITOCAL 222-G Fiche technique Page 148