Potterton eurocondense four 125 kw, Installation, Operation And Maintanance Manual, Page: 49 / 148

The ducts for exhaust gas facilities must not have any openings other than
the necessary cleaning and inspection ports as well as openings for back
ventilation of the exhaust gas pipe.
6.5 Electrical connections
6.5.1 Electrical connection (general)
Danger
Danger to life through incorrect work!
All electrical work in connection with the installation may only be
carried out by a trained electrician.
AC 230 V +6% -10%, 50 Hz
In Germany the VDE 0100 and local regulations must be followed during
installation; in all other countries, follow the relevant regulations.
The electrical connection should be made with a correct and non-reversi­
ble polarity. In Germany the connection can be executed as an accessible
plug and socket connection with non-reversible polarity or as a fixed con­
nection. In all other countries, a fixed connection must be provided.
For the power supply, use the power cable attached to the boiler or cable
types H05VV-F 3 x 1 mm
2
or 3 x 1.5 mm
2
.
We recommend the installation of a mains isolator upstream of the EC
four. This should isolate all poles and provide contact separation of at
least 3 mm.
All connected components must comply with VDE [or local regulations]. Al­
ways apply strain relief to connecting cables.
Cable types
Danger
Danger to life. Risk of injury or a risk to life from electric shock!
The use of rigid lines (e.g. NYM) is not allowed because of the risk
of cable damages! Flexible cables e.g H05VV-F must be used for
mains voltage and e.g. LIYY for sensor/bus cables.
6.5.2 Cable lengths
Bus/sensor lines do not have mains voltage, but safety extra-low voltage.
Never route them in parallel to mains cables (interference). Otherwise
shielded cables must be installed.
Permissible cable lengths for all sensors:
Cu-cable up to 20m: 0.8 mm
2
Cu-cable up to 80m: 1 mm
2
Cu-cable up to 120m: 1.5 mm
2
Cable types : e.g. LIYY or LiYCY 2 x 0.8
6.5.3 Strain reliefs
All the cables should be fixed in the strain relief clamp of the control panel
and connected according to the connection diagram.
6 Installation
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