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24. 02. 22. Document Number 671572
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
AVS
Installation Manual
5.3 Wiring Connections
5.3.1 Mains Connections
Mains cables should be suitably sized and terminated at terminals
shown on the appropriate diagram.
5.3.2 Control Connections
NET -
4 IDC plug-in connectors are provided for the connection of
compatible sensors, manual controls and for linking the fans together
under a common control. If more than 4 connections are required,
the junction box (product code ES-JB) should be used (see data cable
installation).
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Control Connections
5.3.3 Switched Live (SL) Terminal
A signal of 100-230V a.c. will activate the fan from either its off
state or trickle state (see setting to work-trickle switch). When the
SL is disconnected the fan will over-run (see setting to work-timer
adjustment).
Do not take this signal from an isolating transformer.
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Switched Live Terminal
Mains Connection
Pre-wired
230V 50Hz 1Phase
Remove link if Switched Live signal,
an enabler or BMS signal is connected
Terminals or PCB
N E L SL
5.3.4 Damper Connections
OP -
230V 50Hz 1A max supply to open the damper
CL -
230V 50Hz 1A max supply to close the damper
N -
Neutral supply to damper
RET -
230V ac return signal from the damper limit switch indicates the
damper has reached its operating position. If the return signal is not
present, the fan will wait for 1 minute before starting.
If a damper is
not fitted, connect a link wire from OP to RET. This will cancel the
delay.
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Drive Open / Drive Close Damper Connection
All wiring is 1PH 230V 50Hz
A fan starting delay
of 1 minute is
imposed to the
enable the damper
to open.
To override the
delay fit a link here.
230V
motor
OP
CL
N
RET
2
S4
S6
1
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Drive Open / Spring Close Damper Connection
All wiring is 1PH 230V 50Hz
A fan starting delay
of 1 minute is
imposed to the
enable the damper
to open.
To override the
delay fit a link here.
A fan starting delay
of 1 minute is
imposed to the
enable the damper
to open.
To override the
delay fit a link here.
OP
White
Brown
Blue
CL
N
RET
230V
motor
5.3.5 Volt Free Relay Contacts
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Volt Free Relay Contacts
RUN
FAULT
Run Signal
Fault Signal
5.3.6 Data Cable Installation
A 4-core SELV data cable is used to connect devices such as sensors to
the fan and for interconnecting multiple fan units.
For good EMC engineering practice, any sensor or low voltage data
cables should not be placed within 50mm of mains cables or placed
on the same cable tray or conduit as mains cables.
The maximum cable run between any two devices is 300m when it
is installed in accordance with the instructions. The total data cable
length used in any system must be less than 1000m. Keep the number
of cable joints to a minimum to ensure the best data transmission
efficiency between d 50m or less for ES-LCD.
5.3.7 Maximum Number Of Devices
The maximum number of devices (including fans) that can be
connected together via the data cable is 32, irrespective of their
functions.
