Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual page 9

Technical data – G31
Effective output range (P) at 50/30 °C
Effective output range (P) at 80/60 °C
Heat output range – domestic hot wa-
ter or cylinder reheating (P)
Maximum heat input – heating (Q
max.)
Minimum heat input – heating (Q min.)
Maximum heat input – Domestic hot
water or cylinder reheating (Q max.)
Minimum heat input – Domestic hot
water or cylinder reheating (Q min.)
Technical data – Heating
Maximum flow temperature
Max. flow temperature adjustment
range (factory setting: 75 °C)
Safety discharge of expansion relief
valve
Maximum operating pressure
Nominal water flow (ΔT = 20 K)
ΔP heating at nominal flow (ΔT = 20
K), bypass closed
ΔP heating at nominal flow (ΔT = 20
K), bypass in the position set at the
factory
Approximate value for the condensate
volume (pH value between 3.5 and
4.0) at 50/30 °C
Expansion vessel capacity
Maximum heat output (factory setting
– d.00)
Technical data – Domestic hot water
Minimum water flow
Specific flow rate (D) (ΔT = 30 K) in
accordance with EN 13203
Specific flow rate (ΔT = 35 K)
Minimum permissible pressure
Maximum permissible pressure
(PMW)
Temperature range
Flow rate limiter for cold water
Hot water comfort in accordance with
the standard EN 13203
Technical data – Electrics
Electric connection
Built-in fuse (slow-blow)
Max. electrical power consumption
0020253094_05 ecoTEC sustain Installation and maintenance instructions
VUW 246/7-2 (H- VUW 286/7-2 (H-
GB) GB)
7.0 to 20.1 kW 8.0 to 20.1 kW
6.4 to 18.5 kW 7.4 to 18.5 kW
6.6 to 24.3 kW 7.5 to 28.1 kW
18.7 kW 18.7 kW
6.6 kW 7.6 kW
24.4 kW 28.5 kW
6.6 kW 7.6 kW
VUW 246/7-2 (H- VUW 286/7-2 (H-
GB) GB)
85 ℃ 85 ℃
30 to 80 ℃ 30 to 80 ℃
0.3 MPa 0.3 MPa
(3.0 bar) (3.0 bar)
0.25 MPa 0.25 MPa
(2.50 bar) (2.50 bar)
797 l/h 797 l/h
0.024 MPa 0.024 MPa
0.043 MPa 0.043 MPa
1.87 l/h 1.87 l/h
8.0 l 8.0 l
Auto Auto
VUW 246/7-2 (H- VUW 286/7-2 (H-
GB) GB)
1.7 l/min 1.7 l/min
11.5 l/min 13.5 l/min
9.9 l/min 11.6 l/min
0.03 MPa 0.03 MPa
(0.30 bar) (0.30 bar)
1 MPa 1 MPa
(10 bar) (10 bar)
35 to 60 ℃ 35 to 60 ℃
8.0 l/min 10.0 l/min
** **
VUW 246/7-2 (H- VUW 286/7-2 (H-
GB) GB)
– –
230 V 230 V
– –
50 Hz 50 Hz
T2/2A,250V T2/2A,250V
100 W 110 W
VUW 346/7-2 (H-
GB)
9.1 to 19.9 kW
8.4 to 18.5 kW
8.4 to 34.0 kW
18.7 kW
8.6 kW
34.6 kW
8.6 kW
VUW 346/7-2 (H-
GB)
85 ℃
30 to 80 ℃
0.3 MPa
(3.0 bar)
0.25 MPa
(2.50 bar)
797 l/h
0.026 MPa
0.050 MPa
1.87 l/h
8.0 l
Auto
VUW 346/7-2 (H-
GB)
1.7 l/min
16.5 l/min
14.1 l/min
0.03 MPa
(0.30 bar)
1 MPa
(10 bar)
35 to 60 ℃
12.0 l/min
**
VUW 346/7-2 (H-
GB)
–
230 V
–
50 Hz
T2/2A,250V
115 W
9