Viessmann VITODENS 100-W Installation And Service Instructions Manual page 79

Gas fired wall mounted condensing boiler natural gas version type wb1a

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Connection and wiring diagrams

Alternative (remove jumper

when connecting)

Boiler temperature sensor

DHW outlet sensor

sÖ

Circulation pump 230V~

dÖ

Step motor diverter valve

Flow switch (Heating water)

Gas solenoid valve

combi boiler

(cont.)

fÖ

Mains input 230V~/50Hz

Temperature limiter

Mains connection accessories/

room temperature control

a-ÖA Fan

aCA

Air pressure switch

aVL

Flow switch (DHW)

aND

Water pressure sensor

Designs

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