Viessmann Vitocal 252-A Series - Page 91

91
Instantaneous heating water heater power supply 230 V~
Power supply
1-phase 2-phase 3-phase
A
N
L1
L3 N1
L2
N2 N3
1x 1/N/PE
230 V/50 Hz
L1
N
A
N
L1
L3 N1
L1
L2
N2
N
N3
2x 1/N/PE
230 V/50 Hz
L1
N
A
N
L1
L3 N1
L1L1
L2
N2
N
N3
N
3x 1/N/PE
230 V/50 Hz
L1
N
Jumpers
A
at terminals N1 to N3
Remove!
■
In 3-phase network:
Jumper at terminals N1, N2 can
be removed.
■
In 1-phase network:
Remove jumper!
Remove!
Recommended power cable
3 x 2.5 mm
2
■
In 3-phase network:
5 x 2.5 mm
2
■
In 1-phase network:
7 x 2.5 mm
2
7 x 2.5 mm
2
Max. cable length
25 m 25 m 25 m
Max. fuse rating
16 A 16 A 16 A
Tariff
Economy tariff and power-OFF can be applied
Output restriction during commissioning
3 kW 5 kW 8 kW
Instantaneous heating water heater power supply 400 V~
Power supply 2-phase 3-phase
2/N/PE
400 V/50 Hz
N
L1
L3 N1
N
L2
L2
N2 N3
L1
A
3/N/PE
400 V/50 Hz
N
L1
L3 N1
N
L3L2
L2
N2 N3
L1
A
Jumpers
A
at terminals N1 to N3
Never remove! Never remove!
Recommended power cable
5 x 2.5 mm
2
5 x 2.5 mm
2
Max. cable length 25 m 25 m
Max. fuse rating 16 A 16 A
Tariff Economy tariff and power-OFF
can be applied
Economy tariff and power-OFF can
be applied
Output restriction during commis-
sioning
5 kW 8 kW
Electrical connections
Power supply (cont.)
6222080
Installation