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24. 02. 22. Document Number 671572
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
AVS
Installation Manual
5.0 ELECTRICAL INSTALLATION
Before commencing work make sure that the unit, switched live
and Nuaire control are electrically isolated from the mains supply.
Because the run and start currents depend upon the duty and
associated ductwork of an individual unit, run currents will be
exceeded if the unit is operated with its cover removed. It is therefore
recommended that the unit is not run for prolonged periods in this
condition.
5.1 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.
5.1.1 AVS1-8
20
AVS1-8 Wiring Diagram
230V - 50Hz Supply
Local isolator (by others)
L
N
N
L
Damper Connections
Run
Signal
Fault
Signal
NET
connections
for Ecosmart
devices
Min Max SL run
on
Trickle
0
1
Test
Link wire see note*
ES-CO2
Connection
BMS
Input
Signal
0-10V
0V
Ecosmart
Pwr
Standby
Fan 1
Heating
Fan 2
Cooling
Fault
TX
RX
Frost
N
L
SL
DP
CL
N
RET
Heat
Demand Run Fault
E
5.1.2 AVS9
Damper Connections
Heat Demand
Signal
Run
Signal
Fault
Signal
NET
connections
for Ecosmart
devices
Min Max SL run
on
Trickle
0
1
Link wire see note*
Test
Connection
ES-CO2
BMS
Input
Signal
0V
0-10V
Ecosmart
Pwr
Standby
Fan 1
Heating
Fan 2
Cooling
Fault
TX
RX
Frost
N
L
SL
DP
CL
N
RET
Heat
Demand Run Fault
N L1
L3
L2 L3
L2
L1
N
400V - 3ph 50Hz Supply
Local isolator (by others)
E
21
AVS9 Wiring Diagram
5.1.3 Control Module
Volt Free
Contact
RUN signal
0.5A inductive
5A resistive
Volt Free
Contact
Connections
FAULT signal
to Damper
N
L
SL
RUN
FA
U
LT
DP
CL
N
RET
400V 3ph 50Hz supply
Switch live signal
(if required)
connections
No user
NET connections for
ECOSMART devices
connections
CO
2
sensor
0
+ve signal
from BMS
Remove this link wire if
a switched live signal is
connected to terminal SL
NOTE: Also remove link if a
BMS is connected.
Also remove link if an enabling
device is connected in the 'NET'
EC
OSMART NET
L3
L2
L1
N
Ribbon cable
to commissioning
box
N L1 L2 L3
22
Control Module Wiring Diagram
5.2 Post Installation Testing
•
Ensure that the fan unit and any specified controls are fitted
securely according to the instructions.
•
Switch on the mains supply.
•
Push the test button to run the unit fan and check it runs
satisfactorily.
•
If a switched live signal is used, activate this signal and check that
the fan runs. De-activate the switched live signal and check the
run-on time; adjust if necessary.
•
Adjust the set point of any sensors and PIR; check they function
correctly.
•
Adjust the maximum and minimum airflow (if required) by
following the commissioning procedures.
