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Set the "Set DHW temperature" for the DHW cylin-

der.

Factory setting: 50 °C

Setting range: 10 to 60 °C

Note

Your contractor can change the setting range. For this,

consult your contractor.

Tap the following on-screen buttons:

1. If required, for the home screen

2. for the "Main menu"

3. "DHW" for DHW heating settings

4. "DHW set temperature"

5. / for the required value

6. to confirm

Setting "Operating program" for DHW heating

Enable the "Operating program" for DHW heating.

The setting is required only where the "Standby

mode" "Operating program" is set.

Tap the following on-screen buttons:

1. If required, for the home screen

2. for "Operating program"

3. "Only DHW"

"Heating and DHW"

4. to confirm

For information on the operating programs, see

page 15.

Switching off DHW heating

Deactivate DHW heating.

Tap the following on-screen buttons:

1. If required, for the home screen

2. for the main menu

3. "DHW" for DHW heating settings

4. "DHW set temperature"

5. for 10 °C

6. to confirm

Single boiler constant control: DHW heating

Setting DHW temperature

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Viessmann GC1 Operating Instructions For The System User

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