Viessmann VITODENS Series Operating Instructions Manual page 34

Heating system with the control unit, for constant temperature mode

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Terminology

(cont.)

Summer mode

Operating program " ".

During the warmer months of the year,

i.e. if the rooms do not have to be heated,

you can deactivate heating mode. The

boiler remains operational for DHW

heating.

Cylinder primary pump

Circulation pump for heating the DHW in

the DHW cylinder.

Drinking water filter

A device that removes solids from the

water. The drinking water filter is instal-

led in the cold water pipe upstream of the

DHW cylinder or the instantaneous

water heater.

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