Viessmann burner control, single stage for Atola, Rexola-bifferal. Replaces burner controls: 7251704, 7251808, 7273142, 7273275, 7751704, 7751808,7773142, 7773275, 7812928, 7812953, 7822647 This burner control is also the successor of the burner control GLZ single-stage 7822648 Manufacturer No.: 7838536
