Extension AM1.
KMBUS Function extension inside the casing for wall mounting.
Up to 2 of the following pumps can be controlled:
- DHW circulation pump, with control unit for weather compensated mode (Vitotronic 200)
- Circulation pump for cylinder heating in conjunction with separate DHW cylinder
- Heating circuit pump (stepped) for the heating circuit without mixer
Note: Not compatible with EM PlusBus systems