Power Supply Fö; Routing Connecting Cables - Viessmann Vitoladens 300-W Installation And Service Instructions For Contractors

Installation sequence
Electrical connections
Power supply
fÖ
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and in
appliance damage.
Connect the power supply and implement all
safety measures (e.g. RCD circuit) in accord-
ance with the following regulations:
■ IEC 60364-4-41
■ VDE regulations
■ Connection requirements specified by your
local power supply utility

Routing connecting cables

!
Please note
If the connecting cables come into contact with
hot components they will be damaged.
When routing and securing connecting cables
on site, ensure that the maximum permissible
temperatures for these cables are not exceeded.
%
E
A
Fig. 11
LV terminals
A
230 V terminals
B
Internal extension
C
Main PCB
D
18
(cont.)
D
B
C
Install an isolator in the power cable to provide
■
omnipolar separation from the mains for all active
conductors, corresponding to overvoltage cate-
gory III (3 mm) for full isolation. This isolator must be
fitted in the permanent electrical installation, in line
with the installation requirements.
In addition, we recommend installing an AC/DC-sen-
sitive RCD (RCD class B
rents that can occur with energy efficient equipment.
■ Max. fuse rating 16 A.
Danger
The absence of component earthing can lead to
serious injury from electric current if an electrical
fault occurs.
The appliance and pipework must be connected
to the equipotential bonding of the building.
F
Communication module
E
Cable grommet for power cable
F
Plugs for connecting the cylinder temperature sen-
%
sor to the cable harness
) for DC (fault) cur-