4
27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)
Installation Manual
3.0 MECHANICAL INSTALLATION
Installation must be completed by competent persons, in accordance
with good industry practice and should conform to all governing and
statutory bodies i.e. IEE, CIBSE, etc.
3.1 Surface Mounted Installation
Rear mounted
spigot
100 dia.
7
Surface Mounted In Cavity Wall
1. Unpack the unit and components. Discard the top spigot (040918),
rear blank (040917) and recess flange (040919). Remove the front
cover/grille and disconnect the motors from the control circuit
board, noting their orientation. Rotate the yellow retaining clip and
remove the fan assembly. Leaving the control unit in place, remove
the top section only.
2. Use the base is a template mark the discharge spigot and mounting
holes onto the surface.
3. Core cut the hole for the spigot to 100mm diameter.
4. Run suitable cable into the unit, noting the wiring should be for a
fixed wired installation.
5. Run any ancillary wiring into the knock-out “square”.
6. Secure the case to the surface taking care not to twist or distort the
case.
7. Connect all wiring (Section 4.5) and re-fit top section of control unit.
Re-fit fan assembly and connect motors to control board. Rotate
yellow clip to lock in place.
8. Complete the installation by securing the front cover and fitting any
filters and test-run the unit.
9. Adjust control settings as required.
3.2 Recess Mounted With Top Spigot Installation
Top mounted spigot
of mounting
frame
Side bracket
3 x M5
screws
Stud wall
8
Recess Mounted In Stud Wall
For applications including stud walls and ceilings that require top spigot
configuration
(not suitable for Opus 95D units).
1. Unpack the unit and components. Discard the rear spigot (040954),
top spigot blank (040921) and outer casing (040915). Fit the recess
flange (040919) and rear spigot blank (040917). Remove the front
cover/grille and disconnect the motors from the control circuit
board, noting their orientation. Rotate the yellow retaining clip and
remove the fan assembly. Leaving the control unit in place, remove
the top section only.
2. The unit should not be mounted directly to a partition wall / ceiling
but a suitable frame should be erected to secure the mounting
frame kit to (Figure 10).
3. Run suitable cable into the unit, noting the wiring should be for a
fixed wired installation.
4. Run any ancillary wiring into the knock out “square”.
5. Secure the case to the frame using the machine screws provided
taking care not to twist or distort the case.
6. Connect all wiring (Section 4.5) and re-fit top section of control
unit. Re-fit fan assembly and connect motors to control board.
Rotate yellow clip to lock in place.
7. Complete the installation by securing the front cover and fitting any
filters and test-run the unit.
8. Adjust control settings as required.
9
Fan Unit Rotated for Top Spigot Configuration
(Not Suitable
for Opus 95D Units)
Top mounting
spigot
blank
Rear spigot
Recessed mounting
flange
Motor/fan unit
assembly rotated
10
Recess Mounting Kit In Wall Aperture With Top Spigot
Configuration
Fan unit top spigot
Cut bracket flush with
mounting surface of wall
Fan Unit
An aperture of 310mm x 220mm
is required for fan and mounting kit
Recessed mounting flange
MS screws
Self tapping screws x 3
