Viessmann WS3A Instruções de Operação descarregar pdf (Página 7)

Filling the heating system

Please note

Unsuitable fil l water increases the level of depo sits and corrosio n and

may lead to boiler damage.

Thoroughly flush the entire heating system prior to filling with water.

Only use fill water of p otable quality.

Fill water with a water ha rdness in excess of 3.58 mmo l/l must be sof-

tened, e.g. with t he small softening sys tem for heating wate r (see the

Vitoset pricelist).

An anti-freeze additive suitable for heating systems can be mixed with

the fill water.

1. Check t he inlet pres sure of the di a-

phragm expansion vessel.

2. Clos e the gas shut-off v alve.

3. Fill the h eating system at the fill

valve in the heati ng return (on the

connection set or on si te). Minimum

system pressure > 0.8 bar).

Note

If the control uni t has not been

switched ON prior to filling the sys-

tem, then the servomotor of the

changeover valve will still be in its

centre position , and the system will

be completely filled.

4. If the control unit had already been

switched ON before filling began:

Start the control u nit and activate

thefillprogramviacoding"2F:2".

Note

To call up codin g level 1 an d for

setting the coding address, see

page 39.

For function and details of the fill

program, see page 100.

Whilst the fill program runs, the dis-

play shows "bF" (Vitotronic 100) or

"Filling" (Vitotronic 200).

5. Close the boiler fill & drain valve.

6. Set code "2F:0".

Further details regarding the individual steps

Initial start-up, inspection, maintenance

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Viessmann WS3A Instruções de Operação Página 7

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