Vaillant 0010020392, Installation And Maintenance Instructions Manual

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Installation and maintenance instructions ecoFIT sustain 0020230529_05
VUW 256/6-3 (H-
GB) VUW 306/6-3 (H-
GB) VUW 356/6-3 (H-
GB)
Effective output range (P)
at 80/60 °C 5.1 to 18.3 kW 6.1 to 18.3 kW 7.2 to 18.3 kW
Domestic hot water heat
output (P) 5.0 to 25.2 kW 6.0 to 30.0 kW 7.1 to 35.0 kW
Maximum heat input
–
heating (Q max.)
18.4 kW 18.4 kW 18.4 kW
Minimum heat input
–
heat-
ing (Q min.)
5.1 kW 6.1 kW 7.2 kW
Maximum heat input
–
hot
water (Q max.)
25.7 kW 30.6 kW 35.7 kW
Minimum heat input
–
hot
water (Q min.)
5.1 kW 6.1 kW 7.2 kW
Technical data
–
Heating
VUW 256/6-3 (H-
GB) VUW 306/6-3 (H-
GB) VUW 356/6-3 (H-
GB)
Max. flow temperature adjustment
range (default setting: 75 °C) 10 to 80
℃
10 to 80
℃
10 to 80
℃
Maximum permissible pressure 0.3 MPa
(3.0 bar) 0.3 MPa
(3.0 bar) 0.3 MPa
(3.0 bar)
Nominal water flow (
Δ
T = 20 K) 788 l/h 788 l/h 788 l/h
Nominal water flow (
Δ
T = 30 K) 525 l/h 525 l/h 525 l/h
Approximate value for the
condensate volume (pH value
between 3.5 and 4.0) at 50/30 °C 1.84 l/h 1.84 l/h 1.84 l/h
Δ
P heating at nominal flow (
Δ
T =
20 K)
0.025 MPa
(0.250 bar) 0.025 MPa
(0.250 bar) 0.018 MPa
(0.180 bar)
Technical data
–
Domestic hot water
VUW 256/6-3 (H-
GB) VUW 306/6-3 (H-
GB) VUW 356/6-3 (H-
GB)
Specific flow rate (D) (
Δ
T = 30 K)
in accordance with EN 13203
12.1 l/min 14.2 l/min 16.5 l/min
Continuous flow rate (
Δ
T = 35 K)
622 l/h 730 l/h 849 l/h
Specific flow rate (
Δ
T = 35 K) 10.4 l/min 12.2 l/min 14.1 l/min
Minimum permissible pressure 0.03 MPa
(0.30 bar) 0.03 MPa
(0.30 bar) 0.03 MPa
(0.30 bar)
Maximum permissible pressure 1 MPa
(10 bar) 1 MPa
(10 bar) 1 MPa
(10 bar)
Recommended pressure
0.2 MPa
(2.0 bar) 0.2 MPa
(2.0 bar) 0.2 MPa
(2.0 bar)
Temperature range
35 to 60
℃
35 to 60
℃
35 to 60
℃
Maximum water flow rate 8.0 l/min 10.0 l/min 12.0 l/min
Technical data
–
Electrics
VUW 256/6-3 (H-
GB) VUW 306/6-3 (H-
GB) VUW 356/6-3 (H-
GB)
Electrical connection
230 V / 50 Hz 230 V / 50 Hz 230 V / 50 Hz
Built-in fuse (slow-blow) T2/2A, 250V T2/2A, 250V T2/2A, 250V
Max. electrical power consump-
tion
87 W 87 W 98 W
Standby electrical power con-
sumption
2 W 2 W 3 W
IP rating
IPX4D IPX4D IPX4D