UltraBOX 255 kW Gas Condensing Boiler

UltraBOX 255 kW Gas Condensing Boiler 255kW Gas Condensing Boiler comprising of one Low NOx modulating burner firing into one condensing stainless steel heat exchanger, cascade controller, Auto air vent, frost & anti seize protection, hi & low pressure switches and 6.0 bar safety valves. BMS fault indication outputs as an optional extra. Circulating pump/s excluded. NOx 37mg/kWh Class 5 7:1 Turndown. Max output @ 50/30C = 265.5 kW Min outout @ 50/30C = 37.7 kW Max output @ 80/60C = 232.5 kW Min outout @ 80/60C = 34.1 kW Min System Pressure 0.5 bar Max System Pressure 6.0 Bar Flow Connections 2.5″ Return Connection 2.5″ Gas Connection 1.25″ Flue Connection DN170 Residual Flue Pressure 100Pa Combustion Air Connection DN100 Dimensions mm H= 1750 x W=690 x D=995 Integral Cascade Functionality Up to 16 Boilers Optional OCI Cascade Clips Required. Matched Air / Dirt Separators and System Separation Plate Heat Exchangers are available. Class 5 NOx Weight 260kg