20
Wiring diagram
S
R
A
E
F
K
L
N
M
P
B C
D
O
H
G
T
Fig. 11
Standard system example
A
Heat pump
B
LV lead, pre-manufactured
C
Control cable, pre-manufactured
D
Flexible power cable for special tariff/load current:
According to compressor output, cable length and
routing, e.g. 5 x 2.5 mm
2
E
Outside temperature sensor, sensor lead
(2 x 0.75 mm
2
)
F
Control unit, flexible power cable (5 x 1.5 mm
2
)
with power-OFF contact power cable, floating
G
Electricity meter/mains
H
DHW cylinder
K
Cylinder temperature sensor, sensor lead
(2 x 0.75 mm
2
)
L
Circulation pump for cylinder heating or 3-way
diverter valve, power cable (3 x 1.5 mm
2
)
M
DHW circulation pump, power cable (3 x 1.5 mm
2
)
N
Heating circuit pump, power cable (3 x 1.5 mm
2
)
O
Power cable for instantaneous heating water
heater switching module
400 V: 5 x 2.5 mm
2
230 V: 7 x 2.5 mm
2
P
Instantaneous heating water heater (accessories)
R
Secondary pump, power cable (3 x 1.5 mm
2
)
S
Heating water buffer cylinder
T
Cylinder temperature sensor, sensor lead
(2 x 0.75 mm
2
)
Required cable/lead lengths:
■
For the heat pump control unit (wall outlet centrally
directly below the heat pump control unit):
0.6 m from the wall outlet
■
Inside the heat pump (to the control panel):
2.6 m from the top edge of the foundations
Note
If additional heating circuits with mixer, external heat
generators (gas/oil/wood), remote control, etc. are
being installed, the additionally required supply and
control cables and sensor leads must be factored in.
Preparing for installation
External heat pump
(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 ...
