Gas boiler DELTA PRO S 25

fuel oilcombicommercial

Floor standing combination boiler. Offers exceptional heating and hot water performance. High performance, low cost combined boiler and water heater Stainless steel Tank-in-Tank design Choice of Burner - Low NOx premix burner, Pressure jet natural gas or LPG or Pressure jet 28 sec or 35 sec oil Anti-Legionellae: hot water stored at consistently high temperature Fully insulated with rigid polyurethane foam Stove enameled casing Control panel including thermostats, thermometer, indicators and on/off switch 26kW to 55kW output Can be used in battery formation for high output installations Primary heating sealed system kits also available Non Ecodesign compliant Constructive characteristics Capacity (total) - 158 - L Capacity (primary) - 83 - L Capacity (domestic hot water) - 75 - L Capacity expansion tank(s) - - - L Chimney connection - 100 - Ømm Connection - heating - 1 F - Ø" Connection - DHW - 3/4 M - Ø" Connection - re-circulation / safety valve - 3/4 M - Ø" Max operating temperature - 90 - °C Water pressure drop boiler at Δt = 20°C - 15 - mbar Max service pressure heating (primary) - 3 - bar Max service pressure (DHW) - 8,6 - bar Pressure drop flue gas - 0,25 - mbar Weight (empty) - 145 - kg Heating characteristics Heating time from 10 to 60°C - 6 kW (3 kW) - 32 - min Combustion Input max (heating) HCV - 31,4 - kW Input max (heating) LCV - 28,3 - kW Combustion efficiency - 92,2 - % Efficiency (max output) 80/60°C - 92,20 - % CO emissions max output - 1 - ppm Mass rate of combustion products (gas) - 47 - kg/h NOx class (EN15502) - 5 - Output power max (80/60°C) - 25 - kW