Pumps With Power Consumption Greater Than 2 A Or Connection For He Pump; Pumps 400 V; External Demand Via Switching Contact - Viessmann Vitocrossal Installation Instructions Manual
Single boiler: 80 to 318 kw. twin boiler: 240 to 636 kw. gas condensing boiler with matrix cylinder burner. open flue and room sealed operation (112 pages)