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5. Thermostats connection
• Connecting EXPERT NSB, HTR or BTR series thermostats
NSB
SL
N
L
230 V AC
L
N
• Connecting a 230 V thermostat to the CB500X control box extension (e.g. SQ610)
NO COM
N
L
230 V AC
L
N
• Connecting ON/OFF battery-powered thermostat with voltage-free COM / NO output contacts
(e.g. 091FL, RT310, RT510)
NO
COM
230 V AC
L
N
L
230 V live terminal
N
Neutral
NSB function terminal
SL ( )
230 V control signal
Note: In NSB, HTR, ERT, BTR product series follow interchangeable signifying:
= SL
= NSB
INSTALLATION
1
Remove the top cover of the extension module.
4
For safety use fastening strap to prevent power
supply / thermostats wires from falling out.
6. Connection between CB500 and CB500X
If there is a need to increase the number of zones of CB500 control box, it is possible to connect the CB500 and CB500X units using the EXTENSION connector.
230V AC power is supplied only to the main CB500 control box. A maximum of two CB500X extension modules can be connected to the EXTENSION input of the main CB500 control box using a 4-wire cable (230V) - please
pay attention to the terminal markings. All thermostats connected to the CB500 or CB500X have impact on the system module which controls the heat / cool sources in the main CB500 control box.
1
CB500
230 V AC
2
CB500
WARNING! DO NOT connect power supply to the CB500X power supply input when it is connected together with CB500. CB500X power supply input have to be used only when control box extension works
as standalone device.
2
5 mm
Control box power supply
and pump
(min. 3 x 1,0 mm
230 V
2
max. 3 x 1,5 mm
2
230 V)
40 mm
5 mm
Thermostats wires
and extension module
(min. 4 x 0,75 mm
2
230 V
max. 4 x 1,5 mm
2
230 V)
40 mm
Remove the appropriate piece of insulation from
the wires.
CB500X
L
N
CB500X
CB500X
230 V AC
L
N
3
Connect the wires to the spring clamps according
to the wiring diagrams. You can run the cables in
the tunnel under control box housing.
5
Make sure that all the wires are properly
connected, mount top cover and power up the
control box - the
red
power indicator LED will be
illuminated.
CB500X
CB500
CB500X
4 wire
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