NuAire OPUS 40 User manual

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27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)
230V Surface & Recess Mounted
Domestic Single & Twin Fans
Installation Manual
1.0 SAFETY INFORMATION
• The provision of the electrical supply and the connection of the unit to the electrical supply must
be carried out by a qualified electrician.
• Isolate from power supply before removing any covers. During installation / maintenance ensure
all covers are fitted before switching on the mains supply.
• All-pole disconnection from the mains as shown in the wiring diagram must be incorporated
within the fixed wiring and shall have a minimum contact separation of 3mm in accordance with
latest edition of the wiring regulations.
• This unit must be earthed.
• Ducting must be securely fixed with screws to the spigot to prevent access to live parts. Duct
runs terminating close to the fan must be adequately protected by suitable guards.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard. The replacement cord must be of the same
technical specification as the original cord or greater.
• This appliance should not be used by children or persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge, unless they have been given supervision
or instruction concerning the safe use of the appliance by a person responsible for their safety.
Children shall not play with the appliance. Cleaning and user maintenance shall not be carried
out by children.
1.1 Symbols
GENERAL WARNING
Signifies a general warning regarding hazard specified by supplementary information.
ELECTRIC SHOCK
This unit must be completely electrically isolated before any panels are removed. Check
mains supply and control connections.
ROTATING PARTS
This unit contains fast moving rotational parts which may start automatically. It is the
sole responsibility of the installer to adequately guard these components.
REFER TO INSTRUCTION MANUAL
Read and understand the installation and maintenance manual before installing,
operating or maintaining this product.

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27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)Installation Manual
1.2 Important Information
This manual contains important information on the safe and
appropriate assembly, transport, commissioning, operation,
maintenance, disassembly and simple troubleshooting of the product.
While the product has been manufactured according to the accepted
rules of current technology, there is still a danger of personal injury or
damage to equipment if the following general safety instructions and
the warnings contained in these instructions are not complied with.
•Read these instructions completely and thoroughly before
working with the product.
•Keep these instructions in a location where they are accessible
to all users at all times.
•Always include the operating instructions when you pass the
product on to third parties.
1.3 Personal Protective Equipment
The following minimum Personal Protective Equipment (PPE) is
recommended when interacting with Nuaire product:
•Protective Steel Toed Shoes - when handling heavy objects.
•Full Finger Gloves (Marigold PU800 or equivalent) - when
handling sheet metal components.
•Semi Fingerless Gloves (Marigold PU3000 3DO or equivalent)
- when conducting light work on the unit requiring tactile
dexterity.
•Safety Glasses - when conducting any cleaning/cutting operation
or exchanging filters.
•Reusable Half Mask Respirators - when replacing filters which
have been in contact with normal room or environmental air.
Nuaire would always recommend a site specific risk assessment by a
competent person to determine if any additional PPE is required.
2.0 INTRODUCTION
The Nuaire range of Opus 230V fans have been specifically designed
to ventilate areas such as the bathroom, toilet, stores, drying rooms,
cupboards etc.
The range consists of three duty ranges, 40l/s, 60l/s and 95l/s.
The 40 and 60 models are available as single and twin fan variants
(twin fans are duty sharing). The 95 model is dual fan only (both fans
run simultaneously).
The unit package is supplied to offer the installer 3 alternative
mounting options.
The unit discharges air through a 100mm diameter spigot which for a
surface mounted unit exits at the rear, and for recessed mounting can
be discharge either through the rear or top of the unit (Figures 1 - 3).
Air entering the unit passes through the front grille and can be filtered
via an optional foam filter.
The motor(s) are 24V brushless DC. Bearings are sealed, self-lubricating
ball type with integral locked rotor protection. The fan / motor
assembly can be fitted in one of two positions (Figures 6 & 9) and is
held in place by the yellow fastener located at the rear of the unit.
1 Surface Mounted with Rear Spigot
2 Recess Mounted with Rear Spigot
3 Recess Mounted with Top Spigot (Not Suitable for OPUS95D
Units)
2.1 Code Description
1 2 3 - 4
OPUS 40 S- ESPF
1. Range: OPUS
2. Unit Size: 40, 60 or 95 (l/s at Free Air)
3. Fan Type: S= Single Fan
T= Twin Fan
D= Dual Fan (2/3rds Duty on Single Fan Failure)
4. Variant: CF = Speed Control with Filter
CRF = Speed Control with Run-On Timer and Filter
ESF = Ecosmart Control with Filter
ESPF = Ecosmart Control with PIR Sensor and Filter

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27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)Installation Manual
2.4 Fan Component Overview
1. Front Cover/Grille -
Part No. 040913/912
7. Circular Top Spigot Option -
Part No. 040918
2. Outer Casing -
Part No. 040915
8. Top Spigot Blanking Plate -
Part no. 040921
3. Inner Casing -
Part No. 040914 9. Fan Module
4. Recess Flange Option -
Part No. 040919 10. Control
5. Circular Rear Spigot Option -
Part No. 040954
11. Recessed Frame Mounting
Plate (See Figure 9)
6. Rear Spigot Blanking Plate (Not
Shown, See Figure 8) -
Part No. 040917
12. Screw Kit
4
1
2
3
5
7
8
9
10
4
5 Exploded View of Units and Components
2.5 Fixings Inventory
Outer casing to inner casing screw 4.2 x 9.5 (4 off)
Recess flange to inner case screw 3.5 x 9.5 (4 off)
Rear spigot to inner case screw 3.5 x 6.5 (2 off)
Rear spigot blanking plate to inner case 3.5 x 6.5 (2 off)
Grille section to inner case 3.5 x 19 (4 off)
6 Internal View of Unit with Components Removed
module
Motor/fan unit assembly
in upright made for rear
spigot configuration.
Electronic control
Motor/fan unit assembly
retaining clip
2.2 Ancillary Items
Code Description
OPUS-RFI Remote Fail Indicator
OPUS-AV1 Remote Fail Indicator for Ecosmart Models Only
HUMISEN External Humidistat
ES-HUMIDISTAT External Humidistat for Ecosmart Models Only
2.3 Dimensions
45
230
145
120
34
230
154 35
95
70
145
255
340
307
225
145
230
45
95
154
255
340
65
DIMENSIONS (MM) RECESSED MOUNTED UNIT REAR DISCHARGE
DIMENSIONS (MM) RECESSED MOUNTED UNIT SIDE DISCHARGE
DIMENSIONS (MM) SURFACE MOUNTED UNIT
FRONT VIEW SIDE VIEW BACK VIEW
FRONT VIEW SIDE VIEW BACK VIEW
FRONT VIEW SIDE VIEW BACK VIEW
4 Dimensions

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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

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27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)Installation Manual
3.3 Recess Mounting With Rear Spigot
Wall fixings through
mounting frame
Rear mounted
spigot
of mounting
Side bracket
frame
11 Recess Mounted In Cavity Wall
For applications including cavity walls that require rear spigot
configuration.
1. Unpack the unit and components. Discard the top spigot (040918),
rear spigot blank (040917) and outer casing (040915). Fit the recess
flange (040919) and rear spigot (040954). 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 partition wall / ceiling
but a suitable frame should be erected to secure the mounting
frame kit to (Figure 12).
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, test-run the unit.
8. Adjust control settings as required.
Cut bracket flush with
mounting surface of wall
Fan unit rear spigot fits into back of mounting
frame and into ducting
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
12 Recess Mounted Frame Kit In Wall Aperture With Rear Spigot
Configuration
4.0 ELECTRICAL INSTALLATION
Isolation - Before commencing work, make sure that the unit and
Nuaire control are electrically isolated from the mains supply.
For good EMC engineering practice, any sensor cables or switched
live cables should not be placed within 50mm of other cables or on
the same metal cable tray as other cables.
4.1 Ecosmart Control Connections
4.1.1 Net Connections
The IDC plug-in connectors are provided for the connection of
compatible sensors, manual controls and for linking the fans together
under a common control. If more than 3 connections are required, the
junction box (product code ES-JB) should be used.
Do not run the SELV data cable in the same conduit as the mains
cable and leave a 50mm separation with any power cables.
4.1.2 Volt Free Relay Contacts
The volt free contacts are not fused. If these are used to power any
external equipment, the installer must provide adequate fusing or other
protections. These contacts are rated at 5A resistive, 0.5A inductive.
4.1.3 Run Connections
These contacts are closed when the fan is running.
Fault connections:
No Fault = Contacts Close
Fault = Contacts Open (Including No Power Supply to Unit)
4.1.4 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. Do not run
data cable in the same conduit as the mains cables and ensure there
is a 50mm separation between the data cable and other cables. The
maximum cable run between any two devices is 300m when it is
installed in accordance with the instructions. Please note that 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.
4.1.5 Maximum Number of Devices
The maximum number of devices (including fans) that can be
connected together via the cable is 32, irrespective of their functions.
4.1.6 LED Indication
PWR / GREEN: Power on and OK,
STANDBY RED: LED On When Fan is Not Running
Fan 1 GREEN: Fan 1 is running, RED: Fan 1 faulty.
Fan 2 GREEN: Fan 2 is running, RED: Fan 2 faulty.
4.2 Basic Control Connections
4.2.1 Fault (Terminals 2 and 3)
This should only be used with optional OPUS-RFI (remote fail
indicator). Connecting mains or any other device will damage the
control PCB.
4.2.2 LED Indication
Fan 1 GREEN: Fan 1 is running.
RED: Fan 1 faulty.
Fan 2 GREEN: Fan 2 is running.
RED: Fan 2 faulty.

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27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)Installation Manual
4.3 Electrical Consumption
Unit Size Power Consumption (Watts) FLC (amps)
OPUS40 14 0.11
OPUS60 43 0.32
OPUS95 72 0.60
4.4 PCB Details
SWL N L
Mains connection
NET connections for
Ecosmart devices
*(see note)
Volt free relay
contacts
or connection Fault
for OPUS-RFI Run
Switch to activate
continuous trickle
Fan connections Trickle
operation
switch
position
13 View Inside Electronic Control Module With Cover Removed
4.5 Wiring
4.5.1 Simple Wiring
N
L
Room light
Fuse
2 Amp max
Switch
SWL
N
L
*Link
Isolator
14 Simple Wiring
4.5.2 Wiring Using Run-On Timer And Enabler (Integral PIR,
Humisen, ES-Humidistat etc.)
SWL
N
L
Room light
Switch
Fuse
2 Amp max
N
L
Isolator
15 Wiring Using Run-On Timer And Enabler (Integral PIR, Humisen,
ES-Humidistat etc.)
5.0 COMMISSIONING
For commissioning purposes, the unit has a miniature control panel
mounted in its fascia hidden behind the front cover facilitating high and
low speed adjustment (trickle and boost) together with run on timer
(1- 60minutes).
The front cover is removable without the aid of tools. Any adjustments
shall be quickly and easily achieved with a standard screwdriver. The
control panel also has status indication lamps visible behind the corner
“window”.
Run and standby versions shall have auto changeover and duty share
as standard, the fan shall changeover every twelve hours of run time to
maximise the unit’s effective life span. All models shall have foam filters
as standard.
6.0 CONTROLS
The unit has the following functions integrally mounted within on a
purpose made PCB, all such components are pre-wired and factory
fitted by the manufacturer.
Min speed: Used to regulate trickle speed. Can be disabled
using switch (Figure 13).
Max speed: Used to regulate full speed. Adjustable.
Run-on timer: 1 to 60 minutes.
7.0 MAINTENANCE
Before any maintenance or cleaning operation, switch off the fan
and disconnect from the main power supply.
It is important that maintenance checks are recorded and that the
schedule is always adhered to, in all cases, the previous report should
be referred to.
Even with optional filtered extract grilles fitted, some dust, fluff etc.
will pass through the filter, and which if allowed, will build up internally
on motors and impellers, shortening the life of the unit and, in severe
cases, leading to overheating of the motors.
Consequently, it is strongly recommended that all units are inspected
and cleaned every year.
The front cover can be removed and cleaned with water and a mild
detergent using a soft cloth and the motor fan assembly can be cleaned
with a dry brush or dry cloth. Ensure the unit does not come into
contact with any kind of liquid or solvent. If this should occur, contact a
qualified technician before reassembling the fan.
To clean the filter (if fitted), remove from the unit and wash in tepid
water to which a little mild detergent has been added. Shake out the
excess water and allow the filter to dry naturally, replace when dry.

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27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)Installation Manual
8.0 WARRANTY
The unit has a 3 year warranty. Ecosmart versions have a 5 year
warranty. The warranty starts from the day of delivery and includes
parts and labour for the first year. The remaining period covers
replacement parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled, or not
installed, commissioned and maintained in accordance with the details
contained in this manual and general good practice.
The product warranty applies to the UK mainland and in accordance
with Clause 14 of our Conditions of Sale. Customers purchasing from
outside of the UK should contact Nuaire International Sales office for
further details.
Failure to maintain the unit as recommended will invalidate the
warranty.
9.0 END-OF-LIFE AND RECYCLING
Ensure that Nuaire product is made safe from any electrical / water
/ refrigerant supplies before dismantling commences. This work
should only be undertaken by a qualified person in accordance with
local authority regulations and guidelines, taking into account all
site based risks.
Where possible Nuaire use components which can be largely recycled
when the product reaches its end-of-life:
•Fans, motors, controls, actuators, cabling and other electrical
components can be segregated into WEEE recycling streams.
•Sheet metal parts, aluminium extrusion, heating/cooling coils and
other metallic items can be segregated and fully recycled.
•EPP, plastic ducting, nylon corner pieces, plastic heat exchangers,
packaging material and other plastic components can be
segregated into mixed plastic and widely recycled.
•Cardboard packaging, wood, used filters and other paper
components can be largely recycled or fully processed in energy
from waste centres.
•Remaining Items can be further segregated and processed in
accordance with the zero waste hierarchy. Please call After Sales
Support for further information on items not listed above.
10.0 AFTER SALES AND REPLACEMENT PARTS
For technical assistance or further product information, including spare
parts and replacement components, please contact the After Sales
Department.
If ordering spares please quote the serial number of the unit together
with the part number, if the part number is not known please give a full
description of the part required. The serial number will be found on the
identification plate attached to the unit casing.
Telephone [phone]
[e-mail]
Technical or commercial considerations may, from time to time,
make it necessary to alter the design, performance and dimensions
of equipment and the right is reserved to make such changes without
prior notice.

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27. 01. 22. Document Number 671398
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
OPUS(40/60/95)Installation Manual
NOTES