Gas water heater WATERMASTER 25

free-standingvertical

Condensing domestic hot water heater Certified EN89 - Ecodesign Lot 2 (EN 812/2013 - EN 814/2013) Equipped with ACVMax burner and modbus controls Condenses in hot water mode Delivers an exceptional peak and continuous volume of hot water Stainless Steel domestic hot water tank - no anode protection required Space saving footprint - reduced plant-room space requirement Stainless steel heat exchanger reduces maintenance and increases system lifespan Multiple units can be grouped in cascade for larger applications or back up Constructive characteristics Capacity (total) - 196 - L Capacity (primary) - 100 - L Capacity (domestic hot water) - 96 - L Coil capacity - 0 - L Chimney: Max pressure drop in flue pipe - 130 - Pa Chimney: max length of concentric flue pipe - 20 - m Chimney connection - 80/125 - Ømm Connection - heating - 1 F - Ø" Connection - DHW - 1 M - Ø" Connection gas - 3/4 M - Ø" Connection - safety valve - 1/2M - Ø" Max operating temperature - 87 - °C Water pressure drop boiler at Δt = 20°C - 3 - mbar Max service pressure heating (primary) - 3 - bar Max service pressure (DHW) - 8,6 - bar Height when tilted - 1855 - mm Weight (empty) - 177 - kg Heating characteristics Pre-heating time from 10 to 80°C (Heat source: boiler) - 35 - min Reheat time from 40 to 90°C - 30 - min Reheat time from 40 to 80°C - 22 - min Heating time from 10 to 90°C - 43 - min Combustion Input max (heating) HCV - 27,8 - kW Input max (heating) LCV - 25 - kW Combustion efficiency - 98,2 - % Efficiency DHW mode ΔT 30K - 105,4 - % Efficiency DHW mode (EN89) - 108,5 - % CO emissions max output - 27 - ppm CO emissions min output - 6 - ppm Mass rate of combustion products (gas) - 42 - kg/h NOx weighted (GCV) (EN15502) - 21,5 - mg/kWh NOx class (EN15502) - 6 - Gas flow rate (min output) - 0,5 - m³/h