Viessmann Vitocal 222-G User Manual page 13

Vitocal 222-G/242-G/333-G/333-G NC/343-G
Electrical installation scheme
2
X3.9
X1.
X3.8
X3.18
X2.1
X1.1
2 211.2
X1.
X2.N
211.5
X1.
X2.N
212.3
X1.
X2.N
211.3
224.4
X2.N
2
3
F0
2
1
F14
2
145
1
LON
98
2 NC module
X2.1
X5.
X2.2
X2.3
X5.
X2.4
X4.1
X4.2
2
145
1
ID: 4605088_1304_07
Note
Instantaneous heating water heater 4 is prefitted and wired.
Control of the NC function for cooling is already complete inside the
appliance.
VIESMANN
18
94
136
A
67
NTC 10 kΩ
ATS
NTC 10 kΩ
89
VTS NC
121 / 122 / 123
N
230 V/50 Hz
L1
N
211.5
L1
FAS
(cont.)
<16A
20
B
16A
137
3
8
KM BUS distributor
3
145 2
1
3
145 2
1
3
145 2
1
3
2
145 2
1
83
230 V; 0.5 A 21
L1
230 V/50 Hz
N
130 W
M
UP A1
1~
L1
NC module 2
N
qCP
AM
50 W
M
37
ZP
1~
L1
400 V, 50 Hz
L2
3 / N / PE
L3
N
4
2
oQ oT oO
HC A1
1
qXP
KM BUS
System examples