Installation And Electrical Connection; Installation; Electrical Connection; Connection Diagrams - Wilo Control EC-Fire Einbau- Und Betriebsanleitung

7 Installation and electrical connection

In order to prevent damage to the switchgear or
serious injury during installation, the following
points must be observed:
• Installation work – assembly and installation of
the switchgear – may only be carried out by qual-
ified persons. The safety instructions must be fol-
lowed at all times.
• The switchgear must be inspected for transport
damage before carrying out any installation work.
WARNING! Risk of injury!
Existing regulations for accident prevention
must be adhered to.

7.1 Installation

The switchgear is attached to a mounting bracket
of the fire-extinguishing system at the factory.
If fixation of the switchgear is desired as a wall
device – separate from the compact unit – it must
be attached using 4 x 4 mm diameter screws
(plastic housing) or 4 x 8 mm diameter screws
(metal housing).
Suitable measures should be used to ensure the
protection class. The fixation material must be
appropriate to the building structure on-site.

7.2 Electrical connection

RISK OF FATAL INJURY due to dangerous elec-
trical voltage!
Incorrect electrical connections can result in risk
of fatal injury! Electrical connection may only be
carried out by a qualified electrician approved
by the local energy supply company, in accord-
ance with locally applicable regulations.
NOTICE
• Depending on the system impedance and the max.
connections/hour of the connected consumers,
voltage fluctuations or voltage drops may occur
(see appendix 13.2). Always have an electrician
authorised by the local energy supply company
carry out the electrical connection.
• Observe the installation and operating instruc-
tions for the connected pumps and signal trans-
mitters.
• The mains connection current and voltage must
be as stated on the rating plate.
• Fuse protection on the mains side must be in
accordance with the information in the circuit
diagram.
• A residual-current device (RCD, type A, sinusoidal
current) must be installed in the supply line.
Observe the local laws and regulations on this too!
• Route the power supply cable in accordance with
the valid norms/regulations and according to the
connection diagram.
• Earth the system (switchgear and all electric
consumers) in accordance with regulations.
• When using shielded cables, the shielding must be
attached to the earth rail or EMC threaded cable
connection on one side of the switchgear!
Installation and operating instructions Wilo-Control EC-Fire
Connecting cable shields to the EMC threaded
cable connections
(1) or
(2)
(3)

7.2.1 Connection diagrams

The connection diagrams for switchgears with a
plastic housing can be obtained from Fig. 9
and 10. Additionally, the connection diagrams can
be found on the inside of the device cover.
The connection diagrams for switchgears with a
metal housing can be found in the included circuit
diagram. Additionally, the connection diagrams
can be found on the inside of the device cover.

7.2.2 Switchgear mains connection

CAUTION! Beware of incorrect voltage selec-
tion!
The switchgear control is equipped with a multi-
voltage power supply unit. This allows operation
at different voltages. The pre-selected voltage
is set at 400 V at the factory. For other voltages,
the converter bridge must be repositioned
accordingly. The power supply unit may be
destroyed if the incorrect voltage is selected!
Insert the power supply cable laid by the customer
through the threaded cable connections and
secure them.
Connect the wires to the terminal strip/main
switch according to the connection diagram. The
protective earth conductor (PE) is connected to
the earth terminal strip.
Mains connection 3~230 V:
• Cable: 4-core
• Wire: L1, L2, L3, PE
• Converter bridge pre-selected voltage: 230, COM
Mains connection 3~380/400 V:
• Cable: 4-core
• Wire: L1, L2, L3, PE
• Converter bridge pre-selected voltage:
• 3~ 380 V: 380, COM
• 3~ 400 V: 400, COM
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