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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.
