57
aVG
1
2
3
sA
L
N
A
C
B
sK
sÖ
?
L
N
?
230V
230V
X3.13
X3.12
D
X3.13
X3.12
H
K
X3.11
X3.10
E
223.1
L
N
?
230V
X3.13
X3.12
F
G
L
?
N
L1
?
N
fÖ
N
L1
L
aVG
223.2
223.1
223.2
223.1
223.2
2
1
Fig. 54
A
Heat pump 1 (lead heat pump)
B
KM BUS
C
External extension H1
D
Floating contact "External demand "
E
Lag heat pump 1
Connection at contact for "External demand "
F
Floating contact "External demand "
G
Lag heat pump 2
Connection at contact for "External demand "
H
Floating contact "External demand "
K
Lag heat pump 3
L
Central fault message input, lag heat pump
N/C contact X3.10 / X3.11 triggers a message.
Installation sequence
Heat pump control unit electrical connections
(cont.)
5692878
Installation
Summary of Contents for Vitocal 350-A AWHI 351.A14
Page 82: ...82 Troubleshooting Repairs cont 5692878 Maintenance ...
Page 101: ...101 Parts list type AWHI 351 A Heat pump module cont 5692878 Components ...
Page 104: ...104 Parts list type AWHI 351 A Base frame cont 5692878 Components ...
Page 125: ...125 Parts list type AWHO 351 A Heat pump module cont 5692878 Components ...