Installation; Installing The Control Unit - Kessel Comfort PLUS Einbau- Und Betriebsanleitung

4

Installation

Follow the safety instructions, see "Safety", page 26. For an overview of the printed circuit board connections, see "Connec-
tion diagrams", page 35 .
4.1

Installing the control unit

WARNING
Disconnect system from energy sources! Make sure that cables and electrical components are disconnected from
the power supply during work.
The control unit can only be opened if the main switch is in the OFF position.
Undo screws in the housing cover and lift up housing cover.
Mount housing in place provided; to do so, use all four fixing options in the corners of the housing.
Take the ambient conditions into account.
4.2 Connect mains cable 400V
► Lay the mains cable through the left-hand cable passage
up to the connection terminals and the main switch.
► Establish the connections in accordance with the connec-
tion diagram (in the housing cover of the control unit).
► Tighten the cable gland by hand.
Connection overview for the mains cable
Source Connec- Type of con-
tion ductor
Cables
Protective
earth
Neutral
Mains 5-wire
Phase
Phase
Phase
4.3 Mains cable 230V
Mains cable is ready to plug-in (supplied with moulded plug).
4.4 Ensure ATEX requirement
ATEX pump connection with equipotential bonding
The following additional requirements must be taken into account for the electrical installation so that the pumps may be
operated in a potentially explosive atmosphere.
Cable cross-section
The mains cables to the control unit require a minimum cross-section of 6 mm
whichever cross-section is larger (see "Technical data", page 29).
An earthing cable of at least 4mm
EN 60079-14. The earthing cable is routed between the (self-locking) earthing screw and the screw retainer on the terminal.
To do this, proceed as follows:
Before connecting the pump, check whether the motor protection switch of the control unit is suitable for the power con-
sumption of the pump(s) (see type plate).
This system's ATEX pumps can have a 6 or 9-wire cable. Double assignment of the phases in the control unit is provided
for 9-wire cables.
30 / 148
Label Connec-
tion
name
Yel- PE
low-green
Blue N
L1 T1
L2 T2
L3 T3
must be connected to the submersible pump for the equipotential bonding according to
2
Installation and operating instructions
or according to the required fusing,
2
010-700_04