Viessmann Vitocal 242-S Installation And Service Instructions Manual page 64

Installation sequence
Power supply
Connecting instantaneous heating water heater power cable
Internal unit
230 V/50 Hz
L1
L1
L1
N
N
N
400 V/50 Hz
L3
L2
L1
N N
A Internal unit wiring chamber (see
chapter "Overview of connections":"
Internal unit")
B Jumpers
64
(cont.)
1/N/PE
A
B
3/N/PE
A
B
■ Recommended power cable:
400 V~: 5 x 2.5 mm
230 V~: 7 x 2.5 mm
■ Max. fuse protection 16 A
■ Economy tariff and power-OFF can be
used.
2
2