Wiring centre
power supply
(min. 2 x 1,0 mm
2
230 V
max. 2 x 1,5 mm
2
230 V)
Thermostats wires
(min. 4 x 0,75 mm
2
230 V
max. 4 x 1,5 mm
2
230 V)
Wires for the pump
and boiler control
(min. 2 x 0,75 mm
2
230 V
max. 2 x 1,5 mm
2
230 V)
50 mm
110 mm
110 mm
12 mm
12 mm
12 mm
6. Boiler control output
11. Thermostats connection
INSTALLATION
Boiler output - this is a volt free output (COM / NO) that controls the boiler in
the heating system. The output closes and the boiler turns on but always after
3 minutes after receiving the heating signal from any of thermostats paired
with wiring centre. The output opens and the boiler switches off when the
last thermostat stops sending heat demand (after the time set on the Delay
jumper).
Remove the top cover of the wiring centre.
Remove the appropriate piece of insulation from the wires.
Adjust the wires and screw the main housing of the wiring
centre to the rear housing.
Unscrew the main housing (see picture).
Thread the wires under the mounting belt in the back part
of the wiring centre.
Thread the wires through the slots in the top part of the wiring
centre and connect it to the terminals.
Connect the thermoelectric actuators wires.
Mount the back side of the housing to the wall.
When mounting on a DIN rail, open the hooks on the back of
the housing.
Make sure that all the wires are properly connected, mount top
cover and power up the wiring centre - the
red
power indicator
LED will illuminate.
Pump output - this is a volt free output (COM / NO) that controls the circulation
pump in the heating / cooling system. The output closes (pump starts) always
after 3 minutes from the moment of receiving the heating / cooling signal from
any of thermostats paired with wiring centre. The output opens (pump stops)
3 minutes after the last demand for heat/cool sent by the thermostat.
Boiler ON/OFF contacts
(according to the boiler’s
manual)
Boiler output is inactive in the cooling mode.
7. Pump control output
8. Actuators connection
9. Serial connector for the KL04NSB extension
10. Reset button
L
230 V AC
max
3 A
N
The actuator wires should be secured with the self locking connectors in the appropriate zone.
Up to 6 actuators with a load of up to 2 Watts each can be connected to a single zone. Should more
than 6 actuators be required in a zone use an additional relay to relieve the output.
The Serial connector is used to connect the KL08NSN with the KL04NSB extension module to add
functionality and support up to12 zones.
- It is used to refresh the data, after switching jumpers 4 or 5.
0
Off
1
2
3
4
Reset
KL08NSB
Example based on T30NC 230 V actuators
Note:
230 V AC voltage
when actuators are live.
0
Off
1
2
3
4
Reset
KL08NSB
KL04NSB
• Connecting a 230 V thermostat to the KL08NSB wiring centre (e.g. RT200)
5
1
0
15
20 25
3
0
3
5
RT200 THERMOST
AT
0
Off
1
2
3
4
Reset
KL08NSB
230 V AC
L
N
L N
SL
• Connecting EXPERT NSB, HTR or BTR series thermostats
VS30 THERMOST
AT
0
Off
1
2
3
4
Reset
KL08NSB
NSB
230 V AC
L
N
L N SL
L
230 V live terminal
N
Neutral
NSB function terminal
SL ( ) 230 V input signal
Note:
In NSB, HTR, ERT, BTR product series follow interchangeable signifying:
= SL
= NSB
4
1
2
3
5
6
7
8
9
Set includes supplementary accessories (to support
installation proces).
• Connecting ON/OFF battery-powered thermostat with voltage-free COM / NO output contacts
(e.g. 091FL, RT310, RT510)
RT310 THERMOST
AT
0
Off
1
2
3
4
Reset
KL08NSB
COM
NO
230 V AC
L
N
