Viessmann Vitodens 242-F Operations Instructions download pdf (Page 26)

Setting the time and date (if required)

During commissioning, or after pro-

longed time out of use, the time and date

need to be reset.

Extended menu:

1. å

2. "Settings"

3. "Time / Date"

4. Set current time and date.

Venting the boiler

1. Close the shut-off valves on the heat-

ing water side.

Remove cover panel A.

Connect the drain hose on valve B

with a drain.

Open air vent valve B and fill valve

in the heating return and vent

using mains pressure (flush) until no

more air noise can be heard.

Close valve B and fill valve C in the

heating return, and open the shut-off

valves on the heating water side.

Venting the heating system

1. Close the gas shut-off valve and

switch ON the control unit.

2. Activate venting program (see next

steps).

Commissioning, inspection, maintenance

Further details regarding the individual steps

(cont.)

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Viessmann Vitodens 242-F Operations Instructions Page 26