Wiring Diagrams - NuAire AVT-R Installation Manual

Installation Manual
5.2.3 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.
14
Switched Live Terminal
Remove link if Switched Live signal,
an enabler or BMS signal is connected
Terminals or PCB
N E L SL
Mains Connection
Pre-wired
230V 50Hz 1Phase
5.2.4 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.
15
Drive Open / Drive Close Damper Connection
OP CL
2
1
S4
230V
motor
All wiring is 1PH 230V 50Hz
16
Drive Open / Spring Close Damper Connection
OP CL
White Brown
A fan starting delay
of 1 minute is
imposed to the
enable the damper
to open.
230V
To override the
motor
delay fit a link here.
All wiring is 1PH 230V 50Hz
5.2.5 Volt Free Relay Contacts
17
Volt Free Relay Contacts
Run Signal
Fault Signal
Nuaire |
Western Industrial Estate
All manuals and user guides at all-guides.com
N RET
S6
A fan starting delay
of 1 minute is
imposed to the
enable the damper
to open.
To override the
delay fit a link here.
N RET
Blue
A fan starting delay
of 1 minute is
imposed to the
enable the damper
to open.
To override the
delay fit a link here.
RUN FAULT
| | | nuaire.co.uk
Caerphilly CF83 1NA
5.2.6 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 devices + 50m or less for ES-LCD.
5.2.7 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.

5.3 Wiring Diagrams

All inter-connections between circuit boards, blowers and sensors
are made at the factory. These diagrams only show the essential
field wiring points for clarity.
*Remove link wire if switched live signal, an enabler or BMS signal is
connected.
5.3.1 AVT 1-8
18 AVT 1-8 Wiring
Ecosmart
Min
ES-CO2 BMS
Connection Input
Signal
0
E
Trickle
Link wire see note*
Damper Connections
L
N
N
L
Local isolator (by others)
27. 10. 20. Document Number 671590
AVT-(R/X)
Pwr
Standby
Fan 1
Max SL run Fan 2
NET
on
Heating
connections
Cooling
for Ecosmart
Fault
devices
Frost
1
TX
RX
Test
Heat
Demand Run Fault
Run Fault
Signal Signal
230V - 50Hz Supply
6