Technical data

5
Boiler Specification 2
Instructions for installation and servicing ecoMAX 5
Boiler Specification 2
2.1 Technical data (1)
ecoMAX ecoMAX ecoMAX Units
824/2 E 828/2 E 835 E
Maximum CH heat input (G 20) (net) 18.4 22.4 27.0 kW
Maximum CH heat input (G 31) (net) 18.4 22.4 27.0 kW
CH heat output range
80 °C flow/60 °C return 11.0 – 18.4 13.4 – 22.4 10.5 – 27.0 kW
50 °C flow/30 °C return 11.6 – 19.4 14.1 – 23.6 11.0 – 28.4 kW
SEDBUK A A A Band
SAP Seasonal Efficiency 91.1 91.1 91.1 %
Maximum DHW heat input (net) 23.0 28.0 35.0 kW
Maximum DHW output 23.0 28.0 35.0 kW
DHW flow rate ∆T = 35 K rise 9.4 11.5 14.3 l/min
Appr. DHW flow rate at factory set temp. rise (DT = 42 °C) 7.9 9.6 11.9 l/min
Mains water pressure required for max. flow rate 0.5 0.5 0.5 bar
Minimum water flow rate 1.5 1.5 1.5 l/min
Mains water pressure required for min. flow rate 0.2 0.2 0.2 bar
Maximum inlet water pressure 10 10 10 bar
Inlet gas working pressure required
(natural gas) 20 20 20 mbar
Inlet gas working pressure required
(Propane) 37 37 37 mbar
Gas supply (G20) Gross CV (s.t.) 37.8 37.8 37.8 MJ/m
3
Gas supply (G31) Gross CV (s.t.) 95.65 95.65 95.65 MJ/m
3
Gas rate (natural gas) max. 2.43 2.96 3.7 m3/h
Gas rate (Propane) max. 1.78 2.18 2.7 kg/h
CH temperature flow range 30 – 85 30 – 85 30 – 85 °C
Minimum CH water flow (for 20 °C rise) 790 960 1160 l/h
Pump pressure available 0.25 0.25 0.25 bar
10 l expansion vessel pre–charge pressure 0.75 0.75 0.75 bar
Maximum CH system pressure 2.5 2.5 2.5 bar
Connections heating flow/return 22 22 22 mm
Gas inlet 15 15 15 mm
Pressure relief discharge pipework (min.) 15 15 15 mm
Condensate drain (min. internal drain) 19 19 19 mm
Weight 40 41 48 kg
Primary water content 1.8 2.0 2.4 l
Volume of condensate (max.) 2.1 2.5 3.3 l/h
Maximum flue gas temperature 70 70 70 °C
Electrical supply voltage 230/50 230/50 230/50 V ~/Hz
Internal fuse (slow) main voltage 4 4 4 A
Internal fuse (slow) low voltage 4 4 4 A
Power input 115 115 140 W
83 41 77_12 GB04.04.qxd 22.09.2004 12:34 Uhr Seite 5