Viessmann GC1 Operating Instructions For The System User

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This setting can only be made at the Vitotronic 100 of
a boiler in a multi boiler system.
Allows you to lock out a boiler, e.g. for maintenance
work or to remove it from the boiler sequence. Boiler
frost protection is active.
Tap the following on-screen buttons:
1. If required, for the home screen
2. for the "Main menu"
3. "Block/enable boiler"
4. "Block"
or
"Enable"
5. to confirm
Setting the "Language"
Tap the following on-screen buttons:
1. If required, for the home screen
2. for the "Main menu"
3. "Settings"
4. "Language"
5. Flag for the required "Language"
6. to confirm
Setting the display brightness
2 settings are available to you:
■
Brightness for operation
■
Brightness for the standby screen
Tap the following on-screen buttons:
1. If required, for the home screen
2. for the "Main menu"
3. "Settings"
4. "Display brightness"
5. "Brightness, operation"
or
"Brightness, standby"
6. / for the required value
7. to confirm
Setting the "Time" and "Date"
Your control unit has a power reserve of approx.
1 month. If your heating system has been shut down
for a prolonged period, you may need to reset the
"Time" and "Date".
Tap the following on-screen buttons:
1. If required, for the home screen
2. for the "Main menu"
3. "Settings"
4. "Date and time"
5. "Date"
or
"Time"
6. Select your preferred format, e.g. "DD-MM-YY",
"24-hour display"
7. / for the required value
8. to confirm
Further adjustments
Locking out or enabling the boiler
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Viessmann GC1 Specifications

General

Brand	Viessmann
Model	GC1
Category	Control Unit
Language	English