Viessmann VD2 Series Operations Instructions download pdf (Page 11)

Ready for operation

Selecting the heating program (winter, summer)

Vitocontrol-S, VD2/CT3/CM2

In the ”Central heating and domestic hot water” heating program, central heating

takes place with alternating ”normal room temperature” and ”reduced room

temperature” according to the selected time program.

You can set the required room temperature as follows:

To change the ”normal room temperature” (day temperature)

Normal room temp.

ºC

Factory setting:

20ºC / 68ºF from 06:00 to 22:00 hrs.

The ”normal room temperature” can be

set between 3 and 37ºC /

37 and 99ºF.

1.Press the heating circuit selector

button; the button is illuminated.

2.Set the required temperature value

with the “ts” selector knob.

The display changes after a short

time and shows the boiler sequence.

To change the ”reduced room temperature” (night temperature)

Reduced room temp.

ºC

Factory setting:

Frost protection 3ºC / 37ºF from 22:00

to 06:00 hrs.

The “reduced room temperature” can

be set between 4 and 37ºC / 39 and

99ºF.

1.Open the hinged cover on the

programming unit.

2.Press the heating circuit selector

button; the button is illuminated.

3. Press ; the previous

temperature setting flashes

in the display window.

4. / Press the / button

until the required

temperature value appears.

5. Confirm by pressing ;

the temperature value stops

flashing and is stored.

The display changes and

shows boiler sequence.

6. Close the hinged cover on the

programming unit.

Please note:

If the temperature value

3ºC / 37ºF is selected ,

“frost protection” appears in the

display window.

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Viessmann VD2 Series Operations Instructions Page 11

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