Vaillant ecoTEC SERIES, Instructions For Installation And Servicing

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Instructions for installation and servicing ecoTEC 839592_12
2 Boiler specifications
2.1 Technical data
Technical data
ecoTEC plus ecoTEC pro
Units
824 831 837 24 28
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
6.7 – 19.0
6.9 – 19.6
7.1 – 20.2
7.2 – 20.6
8.7 – 24.0
9.0 – 24.7
9.2 – 25.5
9.4 – 26.0 12.0 – 28.0
12.3 – 28.9
12.7 – 29.7
12.9 – 30.3
6.7 – 19.0
6.9 – 19.6
7.1 – 20.2
7.2 – 20.6
9.0 – 24.0
9.3 – 24.7
9.6 – 25.5
9.8 – 26.0
kW
kW
kW
kW
Maximum DHW output 23.0 31.0 37 23.0 28.0 kW
Maximum output for heating 19 24 28 19 24 kW
Minimum output 6.7 8.7 12 6.7 9.0 kW
Category II
2H3P
SEDBUK Band A A A A A Band
SAP Seasonal Efficiency 91.1 %
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: 2.5
G31: 1.82 G20: 3.3
G31: 2.46
G20: 4.0
G31: 2.94
G20: 2.5
G31: 1.82 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)
3.2
10.7
4.2
14.4
5.7
17.1 3.2
10.7
4.4
13.0
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
74
40
83 40
70 40
74
40
74
°C
°C
NOx class 5
Protection class IP X4D
max. flow temperature 85 °C
Adjustable flow temperature
Default setting: max. 75 °C
30 – 85 40 – 85 30 – 85 °C
Maximum CH system pressure 3.0 bar
Circulation water volume ( T=20 K) 817 1032 1204 817 1032 l/h
Approx. condensation volume
at 50 °C flow/30 °C return heating
1.8 2.2 2.9 1.8 2.2 l/h
Pump delivery height 250 mbar
Minimum DHW flow rate 1.5 l/min
DHW flow rate T=35 K rise 9.4 12.7 15.2 9.4 11.5 l/min
Appr. DHW flow rate at factory set temp. rise ( T=42
K)
7.9 10.6 12.6 7.9 9.6 l/min
Permitted DHW overpressure 10 bar
Mains water pressure required for max. flow rate 0.5 0.75 0.75 0.5 0.5 bar
Mains water pressure required for min. flow rate 0.15 bar
Hot water discharge temperature range 35 – 65 °C
Exhaust flue 60/100 mm
Flue categories C13, C33, C43, C53, C83, B23, B33
10 l expansion vessel pre-charge pressure 0.75 bar
Connections heating flow/return 22 mm
Gas inlet 15 22 15 mm
Pressure relief discharge pipework (min.) 15 mm
Condensate drain (min. internal drain) 19 mm
Dimensions (H x W x D)
720 x 440 x
335
720 x 440 x
335
720 x 440 x
403
720 x 440 x
335
720 x 440 x
335
mm
Weight (boiler only) 35 38 44,5 34 37 kg
Primary water content 1.9 2.3 2.5 1.9 2.1 l
Electrical supply voltage 230/50 V ~/Hz
Internal fuse (slow) main voltage 2 A
Power input 110 125 140 110 115 W
Table 2.1 Technical data ecoTEC combination boiler
2 Boiler specifications