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

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

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

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.

Wiring outlet

from backplate.

Installation and aintenance Decentralised Mechanical Extract Ventilation 2 Speed Axial Extract Fan

10. 05. 17. Leaflet Number 671650

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

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

130

98.5

Fuse 2A

Unit serving bathroom or kitchen (optional boost)

N GR

L BRN

SL BLK

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

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 02920 858 400

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

Wire outlet

positions

BASE

Note, if printing document check scale.

A = 147.8mm

B = 100.7mm

10. 05. 17. Leaflet Number 671650

ENSURE THE “BASE” ALIGNS WITH THE

“BASE” ARKINGS ON THE OULDING

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