Mikrofill Boilers

Ethos 350

Floor Standing Boiler

Designed and manufactured in the UK the Ethos stainless steel “twin burner” boilers have been developed to meet the requirements of today’s commercial buildings.

 

With an unsurpassed premix burner modulation of 20 > 1 and output capability from 17.5kW >  3.3mW, the Ethos FS range ensures your building load is accurately matched whatever the season.

 

As with the wall mounted boilers the FS range also have onboard boiler cascade control.

 

Ethos 350
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 FSB320350
General
Dimensions (Height x Width x Depth) 1300 mm x 750 mm x 1100 mm
Water Content of Appliance 25 litres
Weight - empty 234 kg
Connections
Connections - flow / return DN50 PN16 Flange
Connection - gas 1½ " BSP
Connection - flue 150 mm
Electrical
Power supply (Vac/Ph/Hz) 230 V a.c. / 1 / 50 Hz
Power consumption 558 W
Fuse protection 10 Amp
Maximum Fan Speed 6100 RPM
Minimum Fan Speed 1300 RPM
Heating Performance
Nominal heat input (nett) 17.5 - 350.0 kW
Nominal heat output at 80/60°C 17.2 - 343.0 kW
Nominal heat output at 50/30°C 18.9 - 378.0 kW
Maximum gas consumption (G20) 35.5 m³/hr
Maximum gas consumption (G25) 40.4 m³/hr
Maximum gas consumption (G31) 13.6 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 200 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) 98.1 %
Maximum efficiency (nett condensing) 108.9 %
Seasonal efficiency 95.6 %
Compare Models
Description Part Number Nominal heat input (nett) Nominal heat output at 80/60°C
Ethos 350 FSB320350 17.5 - 350.0 kW 17.2 - 343.0 kW
Ethos 550 FSB320550 27.5 - 550.0 kW 27.0 - 539.0 kW
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