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Katherm NK
01/21 EN
Connection (*00)
Note these points in the following Katherm NK wiring diagrams:
Comply with the details on cable types and cabling with due consideration of VDE 0100.
Without *: NYM-J. The requisite number of wires, including protective earth, is stated on the cable. Cross-sections are not stated, as the
cable length is involved in the calculation of the cross-section.
With *: J-Y(ST)Y 0.8mm. Lay separately from power lines. If other types of cables are used, they must be at least equivalent.
The electrical data of the thermoelectric actuator needs to be considered when rating the mains power supply and fuses on site.
Katherm NK
01/21 EN
Cabling of Katherm NK (*00), actuation by room thermostat, type 146904
1
2
41 2 4
NL H N
3
W2
5
3
N PEL
1
2
1
2
1
2
W1
1
2
3
W3
Mains
230 V/50 Hz
Room thermostat,
type 146904
Fuses (by others)
Mains 230 V AC
Unit no. 1
To further units
(refer to information for
maximum number)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Katherm NK
Terminal box (by others)
Katherm NK
Unit no. 2
Terminal box (by others)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Katherm NK
01/21 EN
Cabling of Katherm NK (*00), actuation by room thermostat, type 146927
1
2
41 2 3
KL N H
3
W2
5
3
N PEL
1
2
1
2
1
2
W1
1
2
3
W3
5
2
1
NO COM
-
1
2
W4
2*
Mains
230 V/50 Hz
Room thermostat,
type 146927
Fuses (by others)
Mains 230 V AC
Unit no. 1
To further units
(refer to information for
maximum number)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Katherm NK
Terminal box (by others)
Katherm NK
Unit no. 2
Terminal box (by others)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Support bracket by
others
-Optional-
For more information, see the
instructions for the room thermostat
Contact
Temperature setback
Katherm NK
01/21 EN
Cabling of Katherm NK (*00), actuation by clock thermostat, type 146910
2
1
61 2 3
LC K H
3
W2
5
3
N PEL
1
2
1
2
1
2
W1
1
2
3
W3
7
N
8 9
AI1 COM
1
1 2
1
2
1
2
2*
W4
Mains
230 V/50 Hz
Room thermostat,
type 146910
Fuses (by others)
Mains 230 V AC
Unit no. 1
To further units
(refer to information for
maximum number)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Katherm NK
Terminal box (by others)
Katherm NK
Unit no. 2
Terminal box (by others)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Support bracket by
others
-Optional-
For more information, see the
instructions for the room thermostat
External room
sensor
Katherm NK
01/21 EN
Cabling of Katherm NK (*00), actuation by clock thermostat, type 146933
1
2
41 2 4
NL H N
3
W2
5
3
N PEL
1
2
1
2
1
2
W1
1
2
3
W3
AI1
65
GND
1 2
1
2
1
2
2*
W4
Mains
230 V/50 Hz
Clock thermostat,
type 146933
Fuses (by others)
Mains 230 V AC
Unit no. 1
To further units
(refer to information for
maximum number)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Katherm NK
Terminal box (by others)
Katherm NK
Unit no. 2
Terminal box (by others)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
-Optional-
For more information, see the
instructions for the room thermostat
External room
sensor
Katherm NK
01/21 EN
Cabling of Katherm NK (*00), actuation by building automation system
DA1 DA1
W2
3
3
N PEL
1
2
1
2
1
2
W1
1
2
3
W3
1
2
230V
Mains
230 V/50 Hz
Building automation
system (BAS)
Fuses (by others)
Mains 230 V AC
Unit no. 1
2-pipe heating
To further units
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
Katherm NK
Terminal box (by others)
Katherm NK
Unit no. 2
Terminal box (by others)
Valve drive 230 V AC Open/Close
Connecting cable approx. 1000 mm
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