NuAire DMEV+H User manual

1.0 Introduction

The dMEV+H is a 2 speed axial extract fan has been designed for

continuous ventilation for kitchens or wet rooms and should be

installed using 100mm dia. ducting.

Speed settings are fixed at either Low Speed and Low Boost or

High Speed and High Boost (See Section 9.0 for Details).

As a default, the fan is set to achieve low speed (6 l/s – wet rooms)

to adjust to high speed (8 l/s - kitchen) refer to section 9.0.

2.0 Handling

Always handle the the fan carefully to avoid damage and distortion.

4.0 Spacer installation (if required)

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 for indoor use only, and is suitable for through 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 50°C.

dMEV+H Box Contents

Fan unit (Including 2 part inlet grille and 2 fixing screws), wiring

grommets (2 off), a cable clamp c/w screws and spacer.

dMEV+H

Decentralised Mechanical Extract Ventilation

2 Speed Axial Extract Fan with Humidity Enabler

Installation Guide

The EMC Directive

2014/30/EU

The Low Voltage

Directive

2014/35/EU

10. 05. 17. Leaflet Number 671665

Figure 1.

DMEVH & DMEV+H ONLY

Snap off top lug (highlighted in grey)

(eight lugs in total, two in each corner)

Corner post once top lugs

have been removed

Fig. 1 Spacer Installation Having established the mounting position

for the unit, mark the centres of duct hole and four fixing points

using the template provided on page 5.

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.

Wire outlet

position

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

5.0 Wall / Ceiling Installation

a) lacing the Fan Unit.

Having established the mounting position for your fan, you need to

cut a suitable size hole through the Wall or Ceiling to accommodate

the 100mm dia. Spigot on the fan unit. Place the fan unit into the

hole and mark up 4 fixing points (4 corners of fan unit rear section,

shown in fig 2a).

Drill marked up holes and add suitable fixing plugs (Supplied by

others).

b) repare wiring for the fan.

Wiring can be fed through either the back or the right hand side of

the fan unit rear section.

c) Fitting the Fan Unit.

Insert 100mm dia. ducting (Pre-cut the duct length to suit the

wall/ceiling that duct is going through) through the hole previously

cut, then insert the fan unit into the duct and secure using suitable

fixings (Supplied by others). Ensure that the wiring is fed through the

fan unit rear section at the chosen exit point.

d) Wiring the Fan Unit.

Please revert to section 8.0 for full wiring diagram.

Ensure supply cable is clamped inside the unit (Clamp and Screws

supplied).

e) Setting the Humidity Trigger set point.

Please revert to section 10.0 for Set point options.

f) Finishing the Install.

Once the unit has been wired and humidity trigger set point has

been selected the front facia of the fan unit can be fitted.

Once cover and rear section are slotted together, fit the 2 fixing

screws (supplied) to the bottom face, fig. 2b.

10. 05. 17. Leaflet Number 671665

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

Figure 2a.

Motor Cap.

Fixing Screws.

Figure 2b.

6.0 Dimensions

7.0 Electrical

Voltage: 230V

Frequency: 50Hz

8.0 Wiring

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

10. 05. 17. Leaflet Number 671665

130

98.5

Figure 3. dMEV+H fan unit. Figure 4. dMEV+H fan and room grille.

146

175

127.5 50.5

102

125

190

140

Figure 5. dMEV+H fan unit rear section. Figure 6. dMEV+H fan and room grille side section.

Unit serving bathroom or kitchen (optional boost)

Mains

230V

50Hz

2/3 Pole

isolator

Fan unit

Optional

remote switch

Fuse 2A

Unit serving bathroom (via light switch)

Mains

230V

50Hz

3 Pole

isolator

Fan unit

Fuse 2A

Lamp

Figure 7.

NOTE: In the event of voltage transients or other EMC interference on the mains

supply the fan may go into boost for 3 seconds or possibly for the run on time period.

Operation will be restored to normal after the interference stops.

If severe EMC interference causes the fan to go into permanent boost the mains

power should be reset to restore functionality.

If high levels of RF interference causes the fan to go into boost during the period of RF

interference EMC mitigation procedures may be required. Contact Nuaire service dept

for further support.

9.0 Speed Settings

The dMEV+H is pre-set to achieve 6 l/s Continuous and 13 l/s on

boost. This can however be changed to 8 l/s Continuous and 18 l/s

on boost. To change these speed setting you will need to change the

jumper position within the fan unit (fig. 8). To do this you will need

to remove the 2 fixing screws on the motor cap (shown in fig 2a).

Installation and Maintenance 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 671665

11.0 Maintenance

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.

Telephone 02920 858 400

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 ow ow High High

Setting: Continuous Boost Continuous Boost

Air Flow: 6 l/s 13 l/s 8 l/s 18 l/s

Figure. 8.

Figure 9a. Figure 9b.

Humidity sensor

Humidity switch

230V Live

230V Neutral

230V Switch live

10.0 Humidity Set oint

The dMEV+H is pre-set to boost when it senses a relative humidity

(%RH) of 80% however this can be changed to suit the installation.

To do this you will need to access the PCB within the unit.

On the PCB you will need to alter the humidity switch (fig 9a)

configuration to suit the configurations in (fig 9b).

ON ADE02

1 2

ON ADE02

1 2

ON ADE02

1 2

ON ADE02

1 2

60% RH

70% RH

80% RH

90% RH

Switch actuator

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.

13.0 After Sales

For technical assistance or further product information, including spare

parts and replacement components, please contact the After Sales

Department.

Installation and Maintenance 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 671665

ENSURE THE “BASE” ALIGNS WITH THE

“BASE” MARKINGS ON THE MOULDING

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