NuAire dMEV+ User manual

1.0 Introduction
The d EV+ 2 speed axial extract fan has been designed for
continuous ventilation for kitchens or wet rooms and should
be installed using 100mm dia. ducting. The unit can be installed in
multiple application types, through wall, in duct and in room.
Speed settings are fixed at either Low Speed and Low Boost or
High Speed and High Boost (See Wiring Section for Details).
As a default, the fan is set to achieve low speed (6 l/s - wetrooms) to
adjust to high speed (8 l/s - kitchen) refer to section 10.
2.0 Handling
Always handle the the fan carefully to avoid damage and distortion.
4.0 Induct Installation
3.0 Installation
The installation must be carried out by competent personnel in
accordance with the appropriate authority and conforming to all
statutory and governing regulations i.e. IEE, CIBSE, CCHSE, HVCA etc.
The unit is suitable for indoor use only, and is suitable for induct or
wall and ceiling installation. Mount on a secure, vibration free surface
away from any direct source of heat and areas where it would be
subjected to water spray.
The maximum permissible ambient temperature is 50oC.
Please note that the fan clip supplied with the unit must always be
used for installing the fan to a mounting surface.
d EV+ box contents
Fan unit, electrical cover, wiring grommet and a cable clamp.
2 part inlet grille, 3 anti-vibration pads, 2 part mounting bracket
and spacer.
NOTE: Unit identifier label maybe removed from front cover
once installation / commissioning has been completed.
10. 05. 17. Leaflet Number 671650
dMEV+
Decentralised Mechanical Extract
Ventilation 2 Speed Axial Extract Fan
Installation Guide
The E C Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
Fig. 1 Peel off the 3 anti-vibration pads, and attach them to the insides of
the 2 part bracket. Then attach this half of the bracket to a secure surface.
Fig. 2 Fan components.
Fig. 4Fig. 3
Fig. 2.
Fig. 1
Wiring
grommet
Access to internal
wiring (see fig. 4).
Electrical
cover.
Cable clamp.
Impeller.
Position for front
edge of bracket
Cable clamp
Customer wiring
SL L N
Low High
Unit is fixed speed.
Select between either
Low or High speed with
the jumper position.
i.e. Bathroom installation
Low speed (Pre-set
factory position).
Fig. 3 Complete the internal fan wiring, and secure wiring using the cable
clamp, make a hole in the wiring grommet and insert into the cutout on
the fan wiring casing. Feed the wiring through the grommet and the outer
fan casing for later connection. Fit the electrical cover with 2 screws.
Fig. 4 Press the fan into the bottom half of the bracket and secure the
top half of the bracket to the lower half ensuring that the bracket is
positioned correctly on the fan.
Speed Setting
Nuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk
1

4.0 Induct Installation cont.
Fig. 7 If 100mm dia. rigid duct is used for in-line / in-room
installations the duct ends must be secured with a tape and sealant
fix. Please check the performance curve for rigid duct resistance.
Fig. 6
Fig. 7
Fig. 5
Installation and aintenance Decentralised Mechanical Extract Ventilation 2 Speed Axial Extract Fan
10. 05. 17. Leaflet Number 671650
2
Room grille face to be installed onto the backplate ensuring the Nuaire
logo end of the face is clipped in first.
Grille backplate to be
screwed to ceiling.
Butt the duct ends up to
the sides of the bracket.
Wiring.
Butt the duct ends up to
the sides of the bracket.
Wiring.
Fig. 5 Using a combined maximum length of 1.5m flexible duct
(2 lengths). Slide the 2 sleeve lengths over the fan unit so the ends
butt up to each side of the bracket. Ensure the wiring protrudes at
the leading edge of the bracket. Fix the duct ends in place with a
cable/zip tie or a jubilee clamp then extend the flex duct to the
grille locations.
Fig. 6 Fix the back plate of the 2-part grille on the ceiling with
screws, then pull the flex duct through the previosly cut 100mm dia.
hole, over the back plate spigot. Fix the duct ends in place with a
cable/zip tie or a jubilee clamp.

Installation and aintenance Decentralised Mechanical Extract Ventilation 2 Speed Axial Extract Fan
10. 05. 17. Leaflet Number 671650
3
Fig. 8 Typical dMEV+ induct/inline installation with ceiling mounted grille and external wall grille.
Ceiling
Wiring.
100mm dia. wall kit
extended through cavity
wall to outside wall grille.
(not supplied with
dMEV fan). Code: TBC.
5.0 Spacer Installation (if required)
Wire outlet
position
Fig. 9 Spacer Installation Having established the mounting position
for the room grille. Mark the centres of duct hole and four fixing
points using the template provided on page 6.
Core cut the centre duct hole, drill and plug mounting holes.
When using surface mounted cabling select the most appropriate
cable entry position and carefully trim out the inner and outer cable
cut-outs.
Secure spacer to the wall / ceiling (fixings supplied by others). Note:
use wood screws not countersink screws to avoid distorting the skirt.
Chased in Cable:
Feed the cable through the spacer to pass through back plate for
when installing fan.
Fig. 8
Fig. 9

Wiring
from fan.
Room grille face to be installed onto the backplate ensuring
the Nuaire logo end of the face is clipped in first.
Grille backplate to be
screwed to wall, then
clips directly onto fan.
Wiring outlet options from top,
back and side of backplate.
Wiring.
Fig. 11Fig. 10
Room grille face to be installed onto the
backplate ensuring the Nuaire
logo end of the face is clipped in first.
Ceiling
Grille backplate to be
screwed to ceiling.
dMEV fan installed directly
into the grille back plate.
AB
Wiring outlet
from backplate.
Installation and aintenance Decentralised Mechanical Extract Ventilation 2 Speed Axial Extract Fan
10. 05. 17. Leaflet Number 671650
4
6.0 Wall Installation
Fig. 13
Wiring outlet
positions.
2 end nodules clip into
2 holes in grille face.
Fig. 10 Having established the mounting position for the room grille,
cut a duct hole through the wall. Wire the fan as described in
(figs. 3 and 4). Insert the 100mm dia. ducting through the wall, then
insert the fan unit into the duct and secure. Ensure that the wiring
is fed through the grille back plate through the chosen exit point
(see fig. 13) before installing the back plate onto the fan.
Fig. 11 Fix the back plate of the 2-part grille on the wall with screws,
then pull the flex through the chosen exit point in the grille front.
(see fig. 13). Join the face of the grille to the back plate by locating
the end with rectangular tabs into the rectangular holes.
Once located, push the top part of the grille face into the back plate
ensuring the round nodules slot into the holes on the top edge.
The wiring can now be positioned in the chosen position on the wall.
7.0 Ceiling Installation
Fig. 12
Fig. 12 Having established the mounting position for the room grille,
cut a 100mm dia. hole through the ceiling. Wire the fan as described
in (figs. 3 and 4). Insert the fan unit into the grille back plate spigot
and secure, ensuring the wiring protrudes from the fan casing above
the back plate spigot (see fig. 12). before installing the back plate
onto the ceiling with the fan unit. The grille face can now be
attached to the back plate.
Using a maximum length of 1.5m flexible duct. Slide the sleeve over
the fan unit so the end goes over the back plate spigot.
Fix the flexible duct end in place with a cable/zip tie or a jubilee
clamp then extend the flex duct to the other grille location. If rigid
duct is used the duct end butts up to the grille back plate spigot and
must be secured with a tape and sealant fix.
Note: easurement A & B in fig. 12 represents the required
minimum height up to the first duct bend.
A = Flexible duct = 230mm up from the back plate.
B = Rigid duct = 200mm up from the top of the back plate spigot.

102
148 45
125
175
96
146
140
190
8.0 Dimensions (mm)
9.0 Electrical
Voltage: 230V
Frequency: 50Hz
10.0 Wiring
Installation and aintenance Decentralised Mechanical Extract Ventilation 2 Speed Axial Extract Fan
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.
10. 05. 17. Leaflet Number 671650
5
130
98.5
4
Fuse 2A
Unit serving bathroom or kitchen (optional boost)
N GR
L BRN
SL BLK
N
L
Mains
230V
50Hz
Unit serving bathroom (via light switch)
3 Pole
isolator
Fan unit
(Factory
wiring)
Lamp
Remote/light
switch
N GR
L BRN
SL BLK
N
L
Mains
230V
50Hz
2/3 Pole
isolator
Fan unit
(Factory
wiring)
(Optional remote
switch)
11.0 aintenance
The fan unit does not require any maintenance. However, for
optimum performance, it is advisable to remove any accumulated
dust with a low power vacuum cleaner.
Note: Installation and Maintenance of the equipment must
be as directed in the instructions provided with the unit.
12.0 Warranty
The 5 year warranty starts from the day of delivery and includes
parts and labour for the first year. The remaining 4 years 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.
13.0 After Sales
For technical assistance or further product information, including spare
parts and replacement components, please contact the After Sales
Department.
Telephone [phone]
Fig. 14a. dMEV+ fan unit.
Fig. 14b. dMEV+ fan and room grille.
Back view. Side view.
Top view.
Cable clamp
Customer wiring
SL L N
Low High
Unit is fixed speed.
Select between either
Low or High speed with
the jumper position.
i.e. Bathroom installation
Low speed (Pre-set
factory position).
Speed setting
Speed ow ow High High
Setting: Continuous Boost Continuous Boost
Air Flow: 6 l/s 13 l/s 8 l/s 18 l/s
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.

Installation and aintenance Decentralised Mechanical Extract Ventilation 2 Speed Axial Extract Fan
14.0 Skirt Spacer Template
A
B
Wire outlet
positions
BASE
Note, if printing document check scale.
A = 147.8mm
B = 100.7mm
10. 05. 17. Leaflet Number 671650
6
ENSURE THE “BASE” ALIGNS WITH THE
“BASE” ARKINGS ON THE OULDING