
Viessmann Internal extension H2 - function extension to control extractor fan, DHW secondary pump, connection of fault message etc
- External extractor interlock, or alternatively, one of the following functions:
- Connection of a DHW circulation pump (only with Vitotronic 200)
- Connection of a heating circuit pump (stepped) for a directly connected heating circuit
- Connection of a central fault message facility
- Connection of a circulation pump for cylinder heating
Original: $80.07
-70%$80.07
$24.02Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
- External extractor interlock, or alternatively, one of the following functions:
- Connection of a DHW circulation pump (only with Vitotronic 200)
- Connection of a heating circuit pump (stepped) for a directly connected heating circuit
- Connection of a central fault message facility
- Connection of a circulation pump for cylinder heating











