Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 60

Installation sequence
Power supply
(cont.)
Instantaneous heating water heater power supply
Power supply 400 V~
1 2 3 4 5 6 7 8 9 10 11 12 13 14
143
N
F2
L
40
1/N/PE
230 V/50 Hz
Fig. 50
Jumpers: Do not remove!
A
■ 3/N/PE 400 V/50 Hz
■ Recommended power cable:
2
5 x 2.5 mm
60
171
N L N
AC
L1 L2 L3
136
r
3/N/PE 400 V/50 Hz
L1 L2 L3
P1
L N
1
N N1 N2 N3
1/N/PE 230 V/50 Hz
3x
N
■ Max. cable length: 25 m
■ Max. fuse rating: 16 A
■ Economy tariff and power-OFF can be applied
P2
L
136
A
r