Viessmann WS3A Instruções de Operação descarregar pdf (Página 8)

Venting the boiler

1. Clos e the shut-off valves on th e pri-

mary side.

2. Connect the drain hose on valve

A with a drain outlet.

3. Open valve A andfillvalveinthe

heating return and vent at mains

pressure, until no sound of escap-

ingaircanbeheard.

4. Clos e valve A and fill valve in the

heating return and open the pri-

mary shut-off valves.

Venting the heating system

1. Clos e the gas shut-off v alve and

switch ON the control unit.

2. Activate the venting program via

code "2F:1".

Note

To call up codin g level 1 an d for

setting the coding address, see

page 39.

For the function and sequence of

the venting progr am, see page 100.

Whilst the venting program runs,

the display shows "EL"

(Vitotronic 100) or "Venting"

(Vitotronic 200).

3. Check the system pressure.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

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Viessmann WS3A Instruções de Operação Página 8