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17. 03. 22. Document Number 671218
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS100/150-M
Installation Manual
7
Motor Plate Assembly Replacement
C
Motor plate
locates into
bottom channel
Terminal
block
Control
module
pulls out
to remove
B
Plenum
plate
Control
module
A
Motor plate
fixing screws (2)
Drop motor plate
assembly forward
during fitting
to plenum
6.0 CONTROLS
All the control functions and adjustments are located on the electronic
control module. An adjusting tool is provided clipped to the blower
casing.
6.1 Run-On Timer (A)
The overrun feature is only active when the fan is connected to a
switched live as in wiring diagram 4 on page 2. The overrun time is
factory set at zero, fully anti clockwise and can be adjusted up to
thirty minutes by turning the adjustment clockwise. Test by activating/
deactivating the switched live circuit.
6.2 Full (MAX) Speed (B)
The full/MAX speed is factory set at 100%, fully clockwise and can be
adjusted down to 50% (fully anti clockwise) by adjusting the setting
screw anti clockwise with the setting tool supplied.
6.3 Low (MIN or Trickle) Speed (B)
The low or trickle speed is factory set at zero, fully anti clockwise and
can be adjusted upwards to a maximum of 50% speed by turning the
adjusting screw clockwise with the setting tool supplied.
The fan must be wired as diagram 5 on page 2 and activated via the
switched live for the trickle (low speed) to boost (max speed) to be
operative.
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Control Module Adjustments
Fail LED
(A) Run On
Timer
Run LED
(B) Full Speed
50 - 100%
(C) Low Speed
0 - 50% (trickle vent)
Fan motor socket
Remote status
indicator socket
5.0 ELECTRICAL INSTALLATION
Offer the single phase supply wiring, 230V switched live wire and the
wires of any externally installed sensors or controls via the case side
grommets.
•
To ease electrical connection, remove the six-way termination
block.
•
The mains wiring must be from a fixed wiring installation
and both mains and switched live must be connected via a
common local isolator.
•
The earth wire must be connected to the earth post provided
and not to the six-way termination block.
•
Refer to remote sensor data sheets for their installation and
connection.
5.1 Wiring Diagrams
5.1.1 Full Speed Only
5
Wiring - Full Speed Only
3
1
N
L
2
N
L
Fuse 2A max
Unit Terminal Block
Link for switched live
Earth
post
5.1.2 Trickle Vent / Boost and Timed Overrun
6
Wiring - Trickle Vent / Boost and Timed Overrun
3
1
N
L
2
N
L
Fuse 2A max
Unit Terminal Block
Earth
post
5.2 Motor Plate Assembly Replacement
Remove the cover and withdraw the ‘V’ shape filter from the case. Lift
out the loose blower assembly, remove the two motor retaining screws
(A) which will be used to fix the motor plate into position.
Tilting the top of the mounting plate forwards, locate the bottom of
the plate into the channel provided in the case (C). Swing up the motor
flush with the plenum (B) and secure with the two fixing screws (A).
Expand ‘V’ shape filter and fit into case.
Finally locate the control module into the blowers’ moulded guides
and push the module in to the terminal block, ensuring that spade
connections are engaged. Connect the motor plugs and remote status
indicators (if used) to the sockets in the control module.
Turn on mains power and test run the unit.
