Technical Data - Vaillant ecoFIT sustain Series Installation And Maintenance Instructions Manual

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Technical data

Technical data – General
Gas category
Diameter of the gas pipe
Diameter of the heating connec-
tions
Expansion relief valve connection
pipe (min.)
Condensate discharge pipe (min.)
G20 gas supply pressure
Gas flow at P max. – hot water
(G20)
Gas flow at P max. – heating mode
(G20)
Gas flow at P min. (G20)
CE number (PIN)
SAP 2009/2012 annual efficiency
(%)
Flue gas mass rate in heating
mode at P min.
Flue gas mass rate in heating
mode at P max.
Flue gas mass rate in hot water
handling mode at P max.
Flue gas temperature (80 °C/60 °C)
at P max.
Flue gas temperature (80 °C/60 °C)
at P min.
Flue gas temperature (50 °C/30 °C)
at P max.
Flue gas temperature (50 °C/30 °C)
at P min.
Flue gas temperature in hot water
handling mode
Flue gas temperature when over-
heating
Released system types
Nominal efficiency at 80/60 °C
Nominal efficiency at 50/30 °C
Nominal efficiency at 40/30 °C
NOx class
Product dimensions, width
Product dimensions, depth
Product dimensions, height
Net weight
Weight when filled with water
Technical data – G20 power/loading G20
Maximum heat output
Effective output range (P)
at 40/30 °C
Effective output range (P)
at 50/30 °C
0020230529_06 ecoFIT sustain Installation and maintenance instructions
VUW 256/6-3 (H-
GB)
I
2H
1/2 inch
3/4 inch
15 mm
21.5 mm
2.0 kPa
(20.0 mbar)
2.7 m³/h
1.9 m³/h
0.540 m³/h
CE-0063CP3646
89.3
2.34 g/s
8.3 g/s
11.6 g/s
60 ℃
55 ℃
51 ℃
34 ℃
69 ℃
105 ℃
C13, C33, C43, C53
99.6 %
104.0 %
106.0 %
6
390 mm
295 mm
702 mm
32 kg
36 kg
VUW 256/6-3 (H- VUW 306/6-3 (H-
GB) GB)
18 kW 25 kW
5.4 to 19.5 kW 6.5 to 19.5 kW
5.3 to 19.1 kW 6.3 to 19.1 kW
VUW 306/6-3 (H- VUW 356/6-3 (H-
GB) GB)
I I
2H 2H
1/2 inch 1/2 inch
3/4 inch 3/4 inch
15 mm 15 mm
21.5 mm 21.5 mm
2.0 kPa 2.0 kPa
(20.0 mbar) (20.0 mbar)
3.2 m³/h 3.8 m³/h
1.9 m³/h 1.9 m³/h
0.646 m³/h 0.762 m³/h
CE-0063CP3646 CE-0063CP3646
89.3 89.3
2.80 g/s 3.30 g/s
8.3 g/s 8.3 g/s
13.8 g/s 16.1 g/s
77 ℃ 86 ℃
55 ℃ 56 ℃
62 ℃ 60 ℃
35 ℃ 37 ℃
68 ℃ 75 ℃
95 ℃ 104 ℃
C13, C33, C43, C53 C13, C33, C43, C53
99.6 % 99.6 %
104.0 % 104.0 %
106.0 % 106.0 %
6 6
390 mm 390 mm
295 mm 295 mm
702 mm 702 mm
33 kg 33 kg
37 kg 37 kg
VUW 356/6-3 (H-
GB)
25 kW
7.6 to 19.5 kW
7.5 to 19.1 kW
7