I Technical Data - Vaillant 0010020394 Installation And Maintenance Instructions Manual

I Technical data
Technical data – Heating
Max. flow temperature adjustment
range (default setting: 75 °C)
Maximum permissible pressure
Nominal water flow (ΔT = 20 K)
Nominal water flow (ΔT = 30 K)
Approximate value for the
condensate volume (pH value
between 3.5 and 4.0) at 50/30 °C
ΔP heating at nominal flow (ΔT =
20 K)
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
Effective output range (P)
at 80/60 °C
Domestic hot water heat
output (P)
Maximum heat input –
heating (Q max.)
Minimum heat input – heat-
ing (Q min.)
Maximum heat input – hot
water (Q max.)
Minimum heat input – hot
water (Q min.)
Technical data – Domestic hot water
Specific flow rate (D) (ΔT = 30 K)
in accordance with EN 13203
Continuous flow rate (ΔT = 35 K)
Specific flow rate (ΔT = 35 K)
Minimum permissible pressure
Maximum permissible pressure
Recommended pressure
Temperature range
Flow rate limiter
Technical data – General
Gas category
Diameter of the gas pipe
0020230529_02 ecoFIT sustain Installation and maintenance instructions
VUW 256/6-3 (H-
GB)
10 ... 80 ℃
0.3 MPa
(3.0 bar)
788 l/h
525 l/h
1.84 l/h
0.025 MPa
(0.250 bar)
VUW 256/6-3 (H- VUW 306/6-3 (H-
GB) GB)
18 kW 25 kW
5.4 ... 19.5 kW 6.5 ... 19.5 kW
5.3 ... 19.1 kW 6.3 ... 19.1 kW
5.1 ... 18.3 kW 6.1 ... 18.3 kW
5.0 ... 25.2 kW 6.0 ... 30.0 kW
18.4 kW 18.4 kW
5.1 kW 6.1 kW
25.7 kW 30.6 kW
5.1 kW 6.1 kW
VUW 256/6-3 (H-
GB)
12.1 l/min
622 l/h
10.4 l/min
0.03 MPa
(0.30 bar)
1 MPa
(10 bar)
0.2 MPa
(2.0 bar)
35 ... 60 ℃
8.0 l/min
VUW 256/6-3 (H-
GB)
I
2H
1/2 inch
VUW 306/6-3 (H- VUW 356/6-3 (H-
GB) GB)
10 ... 80 ℃ 10 ... 80 ℃
0.3 MPa 0.3 MPa
(3.0 bar) (3.0 bar)
788 l/h 788 l/h
525 l/h 525 l/h
1.84 l/h 1.84 l/h
0.025 MPa 0.018 MPa
(0.250 bar) (0.180 bar)
VUW 356/6-3 (H-
GB)
25 kW
7.6 ... 19.5 kW
7.5 ... 19.1 kW
7.2 ... 18.3 kW
7.1 ... 35.0 kW
18.4 kW
7.2 kW
35.7 kW
7.2 kW
VUW 306/6-3 (H- VUW 356/6-3 (H-
GB) GB)
14.2 l/min 16.5 l/min
730 l/h 849 l/h
12.2 l/min 14.1 l/min
0.03 MPa 0.03 MPa
(0.30 bar) (0.30 bar)
1 MPa 1 MPa
(10 bar) (10 bar)
0.2 MPa 0.2 MPa
(2.0 bar) (2.0 bar)
35 ... 60 ℃ 35 ... 60 ℃
10.0 l/min 12.0 l/min
VUW 306/6-3 (H- VUW 356/6-3 (H-
GB) GB)
I I
2H 2H
1/2 inch 1/2 inch
Appendix
45