7Installation and maintenance manual ecoTEC
Technical data
ecoTEC plus
ecoTEC pro
828
Units
823 831
CH heat output range
80 °C flow/60 °C return
60 °C flow/40 °C return
50 °C flow/30 °C return
40 °C flow/30 °C return
6.0 – 18.0
6.1 – 18.6
6.3 – 19.1
6.5 – 19.5
8.7 – 24.0
9.0 – 24.7
9.3 – 25.5
9.4 – 26.0
8.7 – 24.0
9.0 – 24.7
9.3 – 25.5
9.4 – 26.0
kW
kW
kW
kW
Drinking water capacity 23.0 31.0 28.0 kW
Maximum thermal load during drinking water heating 23.5 31.6 28.6 kW
Maximum thermal load for heating 18.4 24.5 24.5 kW
Minimum thermal load 6.1 8.9 8.9 kW
Category II
2H3P
SEDBUK A A A Band
Inlet gas working pressure required (G20, natural gas) 20 mbar
Inlet gas working pressure required (G31, Propane) 37 mbar
Connected load (if needed, related to stored charge/
water heating) at 15 °C and 1013 mbar
G20: 1.9
G31: 1.43
G20: 3.3
G31: 2.45
G20: 3.0
G31: 2.22
m
3
/h
kg/h
Exhaust mass rate
at minimum thermal load (40 °C flow/30 °C return)
at maximum thermal load (80 °C flow/60 °C return)
2.8
8.3
4.1
14.2
4.1
12.9
g/s
g/s
Exhaust temperature
at minimum thermal load (40 °C flow/30 °C return)
at maximum thermal load (80 °C flow/60 °C return)
40
70
°C
°C
Standard efficiency factor in compliance with DIN 4702,
T.8 (related to rated thermal output setting)
75 °C flow/60 °C return
40 °C flow/30 °C return
107
109
%
%
Rated efficiency (stationary)
80 °C flow/60 °C return
60 °C flow/40 °C return
50 °C flow/30 °C return
40 °C flow/30 °C return
98
101
104
106
%
%
%
%
30 % efficiency 108
%
NOx class 5
Protection class IP X4D
max. flow temperature 85 °C
Adjustable flow temperature
Default setting: max. 75 °C
40 – 85 °C
Permitted total overpressure 3.0 bar
Circulation water volume (∆T=20 K)
774 1032 1032 l/h
Approx. condensation volume
at 40 °C flow/30 °C return heating
1.7 2.2 2.2 l/h
Pump delivery height 250 mbar
Minimum drinking water volume 1.5 1.5 1.5 l/min
Hot water volume (∆T=30 K)
11.0 14.8 13.4 l/min
Permitted overpressure 10 bar
Required connecting pressure 0.35 bar
Hot water discharge temperature range 35 – 65 °C
Exhaust nozzles 60/100 mm
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 3/4“ 3/4“ 3/4“
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 41 kg
Primary water content 1.9 2.3 2.1 l
Electrical supply voltage 230/50 230/50 230/50 V ~/Hz
Internal fuse (slow) main voltage 2 A
Power input min.
max.
at 30 % efficiency
70
130
65
W
W
W
Table 2.2 Technical data 800 series
Boiler specifications 2
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