0020308118_05 Installation and maintenance instructions 15
VUW 30/40
Start-up flow rate
2.0 l/min
Specific flow rate D (ΔT = 30 K) (EN 13203-1)
19.0 l/min
Flow rate (ΔT = 35 K)
16.3 l/min
Permissible operating pressure
0.95 MPa
(9.50 bar)
Required connection pressure
0.07 MPa
(0.70 bar)
Domestic hot water temperature adjustment range
35 to 65 ℃
Flow rate limiter
14.0 l/min
Classification in accordance with the total comfort factor
(EN 13203-1)
* * *
Technical data – Electrics
VU 10 VU 15 VU 20
Nominal voltage/mains frequency
230 V/50 Hz 230 V/50 Hz 230 V/50 Hz
Permissible connected voltage
190 to 253 V 190 to 253 V 190 to 253 V
Built-in fuse (slow-blow)
4 A 4 A 4 A
Max. power consumption in heating mode
55 W 66.3 W 81.7 W
Max. power consumption in domestic hot water mode
96 W 96 W 102 W
Electrical standby energy consumption
< 2 W < 2 W < 2 W
IP rating
IP X5 D IP X5 D IP X5 D
VU 25 VU 30 VU 35
Nominal voltage/mains frequency
230 V/50 Hz 230 V/50 Hz 230 V/50 Hz
Permissible connected voltage
190 to 253 V 190 to 253 V 190 to 253 V
Built-in fuse (slow-blow)
4 A 4 A 4 A
Max. power consumption in heating mode
87.6 W 95.4 W 110.4 W
Max. power consumption in domestic hot water mode
102 W 108 W 134 W
Electrical standby energy consumption
< 2 W < 2 W < 2 W
IP rating
IP X5 D IP X5 D IP X5 D
VUW 20/26 VUW 25/32 VUW 30/36
Nominal voltage/mains frequency
230 V/50 Hz 230 V/50 Hz 230 V/50 Hz
Permissible connected voltage
190 to 253 V 190 to 253 V 190 to 253 V
Built-in fuse (slow-blow)
4 A 4 A 4 A
Max. power consumption in heating mode
81.7 W 87.6 W 95.4 W
Max. power consumption in domestic hot water mode
112 W 91 W 106 W
Electrical standby energy consumption
< 2 W < 2 W < 2 W
IP rating
IP X5 D IP X5 D IP X5 D
VUW 30/40
Nominal voltage/mains frequency
230 V/50 Hz
Permissible connected voltage
190 to 253 V
Built-in fuse (slow-blow)
4 A
Max. power consumption in heating mode
98.5 W
Max. power consumption in domestic hot water mode
134 W
Electrical standby energy consumption
< 2 W
IP rating
IP X5 D