7
05. 04. 22. Document Number 671572
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
AVS-NC
Installation Manual
5.0 ELECTRICAL INSTALLATION
Isolation - Before commencing work, make sure that the unit 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 Unit Details
Unit details including Full Load Current, Voltage, fan speed etc. can be
found on the unit label.
5.2 Wiring Diagrams
The wiring illustrations below are for units without control. All wiring
is terminated in junction boxes fitted to the side of the unit.
Local
isolator (by others)
Do not wire the power supply to motor via the motor alarm relay as
terminals are only closed after the motor is energized.
The alarm relay on condensate may require the use of a contactor if the
host equipment supply is switched.
5.2.1 AVS1-8
Key:
Pre-Wired Connection
Factory Connection
Optional External Connection
Mandatory External Connection
A1 : Rotary Isolating Switch (Supplied by Customer.)
A3 : Close to Open IO Damper (Supplied by Customer.)
W2 : Dirty Filter Alarm (Open = Alarm)
Supply Fan E
A1
Neutral
Live 1
Live 2
Live 3
Supply Fan
Control
A1
Main Supply
Connection
IO Damper N
IO Damper
Close
Supply Fan L1
Supply Fan 10v
Supply Fan 0-10v
Supply Fan 0v
A3
IO Damper
Open
A2
Supply Fan N
W2
Supply Air flow
Alarm.
(<1V Return is
Fault)
B1
B2
Supply AFS 0v
B3
Supply AFS Signal
Supply AFS 24v
Supply Fan Power
Supply Fan Control
08
09
10
11
15
16
17
18
23
24
25
26
27
28
35
36
IO Damper
Earth Block
Dirty
Filter
Dirty Filter
19
Wiring - AVS1-8
5.2.2 AVS9
Supply Fan Power
Supply Fan E
Neutral
Live 1
Live 2
Live 3
Supply &
Twin Fan
Control
Supply Fan
Alarm.
(Open = Fault.)
A1
Main Supply
Connection
A6
A3
Supply Fan Control
Supply Fan L1
IO Damper N
IO Damper Close
IO Damper Open
W1
08
09
10
11
IO Damper
Earth Block
Key:
Pre-Wired Connection
Factory Connection
Optional External Connection
Mandatory External Connection
A1 : Rotary Isolating Switch (Supplied by Customer.)
A3 : Close to Open IO Damper (Supplied by Customer.)
W1 : Supply Fan Alarm (Open = Alarm)
W2 : Twin Fan Alarm (Open = Alarm)
Supply Fan COM
Supply Fan NC
Supply & Twin Fan 0-10v
Supply & Twin Fan 0v
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A1
B2
B1
A5
A4
Supply Fan L2
A2
Supply Fan L3
A3
20
Wiring - AVS9
