Filling The Siphon With Water; Designating Heating Circuits - Only For Weather-Compensated Control Units - Viessmann Vitodens 200-W Installation And Service Instructions For Contractors

Commissioning, inspection, maintenance
Venting the heating system
Activating the venting function
Weather-compensated control unit
Service menu
1. Press OK and simultaneously for approx. 4 s.
å
2. "Service functions"
3. "Venting"
Venting function is enabled.
4. Ending venting function:
Press OK or .
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Filling the siphon with water

Multi-boiler system:
Fill the siphon in the flue gas header with water as
well.
A
B
Fig. 19
1. Remove retaining clip
2. Fill siphon with water.
B
Checking all connections on the heating water side and DHW side for leaks

Designating heating circuits - only for weather-compensated control units

In the delivered condition, heating circuits are designa-
ted "Heating circuit 1", "Heating circuit 2" and
"Heating circuit 3" (if installed).
If the system user prefers, heating circuits can be re-
designated to suit the specific system.
24
(cont.)
and siphon .
A B
Constant temperature control unit
Service menu
1. Press OK and simultaneously for approx. 4 s.
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2. Select "
5 " with and confirm with OK.
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"ON" flashes.
3. Activate the venting function with OK.
"EL on" is shown constantly.
4. Ending venting function:
Press .
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3. Mount siphon and secure with retaining clip
B
Note
Never twist the inlet hose during assembly. Route
the drain hose without any bends and with a con-
stant fall.
To enter names for heating circuits:
Operating instructions
.
A