Manual Viessmann VITODENS 100-W - 2023 (page 37 of 44) (English)

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For an outside temperature of −14 °C:

AUnderfloor heating system: Slope 0.2 to 0.8

BLow temperature heating system: Slope 0.8 to 1.6

CSystem with a flow temperature in excess of 75 °C, slope 1.6 to 2.0

Flow temperature

in °C

110

Outside temperature

in °C

3.5

1.4

0.2

-20

Set room temperature in °C

35 30 25 20 15 10 5

Fig. 9

AIf you change the slope:

The steepness of the heating curves changes.

BIf you change the level:

The heating curves are shifted in parallel in a verti-

cal direction.

CIf you change the standard room temperature (set

room temperature):

The heating curves are shifted along the "Set room

temperature" axis.

Note

Setting the slope or level too high or too low will not

cause any damage to your heating system.

Both settings affect the level of the flow temperature,

which may then be too low or unnecessarily high.

Heating circuit

A heating circuit is a sealed unvented circuit connect-

ing the heat generator and the radiators, in which the

heating water circulates.

A system may comprise several heating circuits.

For example, one heating circuit for the rooms occu-

pied by you and one heating circuit for the rooms of a

separate apartment.

Heating circuit pump

Circulation pump for circulating the heating water in

the heating circuit

Appendix

Terminology (cont.)

6167584

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Viessmann VITODENS 100-W - 2023 Manual

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