Mikrofill Boilers

Ethos RS 550

Floor Standing Room Sealed Boiler

The Mikrofill Ethos RS floor standing room sealed boilers are environmentally friendly gas fired heating boilers with a modulation range between approximately 10% and 100% of their maximum output.

 

The appliances have low NOX and CO emission, which satisfies the most stringent environmental requirements.

 

Ethos 550 RS
Key Features
  • Available in 350 and 550kW models - Installation options allowing 17.5kW > 3.3mW
  • 2 premix burners per boiler - Nox levels of 31mg/kW
  • Stainless steel heat exchanger - 5 year heat exchanger warranty
Technical Specification
Product Code FSB330550
General
Dimensions (Height x Width x Depth) 1300 mm x 750 mm x 1500 mm
Water Content of appliance 30 litres
Weight - empty 370 kg
Connections
Connections - flow / return DN65 PN16 Flange
Connection - gas 1½ ” BSP
Connection - flue 180 mm
Connection - air supply 160 mm
Electrical
Power supply (Vac/Ph/Hz) 230 V a.c. / 1 / 50 Hz
Power consumption 898 W
Fuse protection 10 Amp
Maximum Fan Speed 9500 RPM
Minimum Fan Speed 1950 RPM
Heating Performance
Nominal heat input (nett) 27.5 - 550.0 kW
Nominal heat output at 80/60°C 27.0 - 539.0 kW
Nominal heat output at 50/30°C 29.7 - 594.0 kW
Maximum gas consumption (G20) 56.1 m³/hr
Maximum gas consumption (G25) 62.1 m³/hr
Maximum gas consumption (G31) 20.9 m3/hr
Technical Data
Flue gas dew point 52 °C
Flue temperature at 80/60°C (at ambient temperature of 20°C) 75 °C
Flue material temperature class T 120
Permitted maximum resistance of flue system 250 Pa
Condensation pH value 3.0 - 5.5
Maximum CH flow temperature 90 °C
CH water pressure (min - max) 0.5 - 6.0 bar
Minimum / maximum gas pressure (G20) 17 - 20 mbar
Minimum / maximum gas pressure (G25) 17 - 20 mbar
Minimum / maximum gas pressure (G31) 30 - 50 mbar
Environmental Data
NOx levels 31.0 mg/kW
Maximum efficiency (nett non condensing) 98.3 %
Maximum efficiency (nett condensing) 108.6 %
Seasonal efficiency 95.6 %
Compare Models
Description Part Number Nominal heat input (nett) Nominal heat output at 80/60°C
Ethos RS 350 FSB330350 17.5 - 350.0 kW 17.2 - 343.0 kW
Ethos RS 550 FSB330550 27.5 - 550.0 kW 27.0 - 539.0 kW
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