220mm EC centrifugal fan commonly used in positive pressure DVS systems . It’s usually found in higher-end or EC-upgrade units because it’s quieter and more efficient than older AC fans.
It can commonly replace older DVS fans such as:
Older DVS 200mm AC centrifugal fans Many DVS “EC upgrade” units
The important thing is not just the fan model — it must match:
•Impeller size (220mm)