Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 49

Electrical connection
Bottom PCB: 230 V~ function components and digital inputs
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. 40
Luster terminals for 230 V~ components and digital inputs
Terminals Component/function
1 to 5
143.1 Power supply for configurable digital in-
puts 1 to 4
143.2
Configurable digital inputs 1 to 4
Possible functions: See chapter "Digital in-
143.3
put functions"
143.4
143.5
6 to 8 3-way diverter valve for heating water buf-
171.N fer cylinder bypass with active cooling func-
171. tion
171.L
AC
(cont.)
171
N L N
AC
L1 L2 L3
136
r
3/N/PE 400 V/50 Hz
Installation sequence
P1 P2
L N
1
N N1 N2 N3
136
r
3x 1/N/PE 230 V/50 Hz
C
Explanation
Voltage: 230 V~
Set the required parameters during commis-
sioning: See chapter "Commissioning assis-
tant"
Breaking capacity: 230 V~, 0.15 A
Recommended connecting cable:
2
2 x 0.75 mm
■
Max. cable length: 50 m
■
Output: 230 W
■
Voltage: 230 V~
■
Max. switching current: 1 A
■
Recommended connecting cable:
3 x 1.5 mm 2
■
Max. cable length: 50 m
■
C
L
49