Nominal heating duty Power supply Plug type Noise level Weight Dimensions (L x W x H) Fuel type Max fuel consumption LPHW connections DHW connections DHW recirculation connections Natural gas connections 250 KW 880,300 btu 230 V 1 ph N+E 50 Hz Run 10 A BS4343 16 A 45 dBA @ 10 metres 2,000 kg 3,000 x 2,400 x 2,600 mm Gas Oil/Natural Gas 31 l/h 50 mm (2") storz coupling 50 mm (2") storz coupling 25 mm (1") storz coupling 1 'A" BSP coupling