Required Cables And Hydraulic Lines - Viessmann VITOCAL 350-A Installation And Service Instructions Manual

Cables/leads and hydraulic lines: Type AWHO 351.A

Required cables and hydraulic lines

A
B C
D
Fig. 13
Heat pump
A
Extra low voltage (ELV) lead, pre-manufactured
B
C Control cable, pre-manufactured
Flexible power cable for special tariff/load current:
D
According to compressor output, cable length and
routing, e.g. 5 x 2.5 mm
Outside temperature sensor, sensor lead
E
2
(2 x 0.75 mm )
F Control unit, flexible power cable (5 x 1.5 mm
with power-OFF contact power cable, floating
Electricity meter/mains
G
H DHW cylinder
Cylinder temperature sensor, sensor lead
K
(2 x 0.75 mm 2 )
Required cable lengths:
■ For the heat pump control unit (wall outlet for the
cables positioned 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.
Installation preparations for heat pumps installed outdoors
E
T
R
2
2
)
(cont.)
F
O
N
S P
L
Circulation pump for cylinder heating or 3-way
L
diverter valve, power cable (3 x 1.5 mm
M DHW circulation pump, power cable (3 x 1.5 mm
N Heating circuit pump, power cable (3 x 1.5 mm
Power cable for instantaneous heating water
O
heater switching module
400 V: 5 x 2.5 mm 2
230 V: 7 x 2.5 mm 2
Instantaneous heating water heater (accessories)
P
R
Secondary pump, power cable (3 x 1.5 mm
Heating water buffer cylinder
S
Cylinder temperature sensor, sensor lead
T
(2 x 0.75 mm 2 )
Connecting cables from control panel
■
pump control unit:
Observe the information on page 37 onwards.
■ Electrical connection of system components
(pumps, mixers, valves, message facilities, contac-
tors, function extensions, sensors etc.):
Connections are made in the heat pump control unit.
Observe the information on page 44 onwards.
■ Power supply:
The number of power cables from the distribution
board (meter box) to the heat pump control unit and
the control panel depends on the system version and
tariffs used.
Connections are made in the heat pump control
panel. Observe the information on page 64
onwards.
G
M
H
K
2 )
2
)
2 )
2
)
heat
–
23