Viessmann WB2B Operations Instructions download pdf (Page 51)

Coding in the delivered condition Possible change

A3:2 Outside temperature

below 1 °C: Heating cir-

cuit pump "ON"

Outside temperature

above 3 °C: Heating cir-

cuit pump "OFF"

A3:-9

A3:15

Heating circuit pump

"ON/OFF" (see the fol-

lowing table)

Please note

When selecting a value below 1 °C, there is a risk of pipes outside the

thermal envelope of the building being damaged by frost.

The standby mode, in particular, should be taken into consideration, e.g.

during holidays.

Parameter Heating circuit pump

Address A3:... "ON" at "OFF" at

-9 -10 °C -8 °C

-8 -9 °C -7 °C

-7 -8 °C -6 °C

-6 -7 °C -5 °C

-5 -6 °C -4 °C

-4 -5 °C -3 °C

-3 -4 °C -2 °C

-2 -3 °C -1 °C

-1 -2 °C 0 °C

0 -1 °C 1 °C

1 0 °C 2 °C

1 °C

3 °C

15 14 °C 16 °C

Code 2 (cont.)

Coding

5692 672 GB

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 123 124

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Viessmann WB2B Operations Instructions Page 51