Changing The Boiler Water Temperature; Setting The Minimum System Temperature; Restoring Factory Settings - Viessmann VITOLIGNO 300-C Operating Instructions Manual

Further adjustments
Setting the temperature unit (°C/°F)
Press the following keys in the standard menu:
1. for "Extended menu".
å
2. / for "Settings"
| ~
3. to confirm.
d
4. / for "Temperature unit"
| ~

Changing the boiler water temperature

In the delivered condition, the boiler water temperature
is set to 85 °C. The temperature of the boiler water is
regulated to the set value.
Press the following keys in the standard menu:
1. for "Extended menu".
å
2. / for "Boiler"
| ~
3. to confirm.
d

Setting the minimum system temperature

Note
This setting is only available if it has been enabled by
your heating contractor on the control unit.
Select a value according to the minimum temperature
you require for the heating system. When the tempera-
ture falls below this value, the boiler or the additional
heat generator starts.
1. for "Extended menu".
å
2. / for "Boiler"
| ~

Restoring factory settings

You can individually restore all modified values for
each heating circuit to their factory setting.
1. for "Extended menu".
å
2. / for "Settings"
| ~
3. to confirm.
d
36
(cont.)
5. to confirm.
d
6. / for the required unit.
| ~
7. to confirm.
d
8. until the standard display is shown.
ä
4. / for "Boiler temperature"
| ~
5. to confirm.
d
6. / for the required temperature.
| ~
7. to confirm.
d
8. until the standard display is shown.
ä
3. to confirm.
d
4. / for "Min set system temp"
| ~
5. to confirm.
d
6. / for the required temperature.
| ~
7. to confirm.
d
8. until the standard display is shown.
ä
4. / for "Factory settings"
| ~
5. to confirm.
d
6. / for selecting the required parameter group.
| ~
"General", "Heating" and "DHW" are avail-
able.
Select the required heating circuit under
"Heating" with / and continue.
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