NuAire MEV-ECO-H User manual

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
Continuous Mechanical Extract
Installation Manual
EMC Directive
2014/30/EU
LVD Directive
2014/35/EU
1.0 SAFETY INFORMATION
• The provision of the electrical supply and the connection of the unit to the mains 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 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.
• Precautions must be taken to avoid the back-flow of gases into the room from the open flue of
gas or other fuel-burning appliances.
• 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
ELECTRIC SHOCK
This unit must be completely electrically isolated before any panels are removed. Check
mains supply and control connections.
READ OPERATOR'S MANUAL
Read and understand the installation and maintenance manual before installing,
operating or maintaining this product.

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
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:
•Full Finger Gloves (Marigold PU800 or equivalent) - when
handling sheet metal components.
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 MEV-ECO(-H) units are designed to provide continuous mechanical
extract ventilation to dwellings in accordance with Part F of the building
regulations, the units are listed on the Product Characteristics Database
(PCDB).
The unit offers three independently variable speed settings for trickle,
boost and purge ventilation rates.
The unit may be used for supply, or extract, however, the different
applications will require variations to the completed installation e.g.
filtration, insulation etc. Contact Nuaire to discuss the full system
design requirements.
2.1 Code Description:
MEV-ECO-H
| |
1 2
1. Range: Continuous Mechanical Extract
Ventilation Unit
2. Humidistat: No Suffix = No Humidistat
H = Integral Humidistat
2.2 Dimensions (mm)
596
340
34
34
125
153
153
=
=
=
=
OUTLET
INLET
INLET
INLET
ALL DUCT CONNECTIONS 204 x 60mm
265 CRS
575 CRS 4x MOUNTING POINTS
ACCESS MOULDING
CONTROL COVER
MAINS CABLE ENTRY
1 Unit Dimensions

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
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.
Please note sufficient access and clear working space around the
unit is required to allow access for commissioning and also future
maintenance of key components. Please allow for the entire access
moulding and control cover to be removed, a minimum of 100mm
from the cover is required (Figure 1). An additional 20mm will be
required at the mains cable entry point to allow cable routing.
The unit is designed to be installed predominantly on a ceiling/
slab or floor mounted, the unit is only rated as IPX4 in these two
orientations. If installing in an alternative orientation the unit
must be situated in a dry environment that avoids dripping water
and must be mounted level in all axis.
The unit must be installed indoors, on a suitable surface away from
direct sources of frost, heat and water spray or moisture generation. For
a vibration-free result the unit must be mounted to a solid structure.
The unit can be secured in place using the four mounting points (fixings
supplied by others) provided (Figure 1).
3.1 Ducting
To ensure a safe final installation all duct connections to the
unit must use rigid ducting with a minimum length of 500mm
and securely held in place by Nuaire specified duct sealant and
aluminium duct tape, Nuaire product codes PVCDSEAL and
PVC50TP45 respectively. If ducting is not fitted to any of the three
available inlets the blanking cap (figure 3) should be removed and
sealed with PVCDSEAL only as per the ducting instruction above.
Failure to seal the unit correctly may lead to reduced unit performance and
energy efficiency.
The unit is not fitted with a back-draught shutter or filter as standard. These
should be integrated into the system design where appropriate and can be
purchased from Nuaire if required. If extracting from a dwelling it is advised the
incoming air to the unit is filtered to a minimum grade of ISO Coarse.
If used, the flexible ducting must be kept to a minimum and should always be
pulled taut. A maximum of 300mm should be used on each leg.
If used to supply fresh air from outside the heated envelope of the dwelling,
the duct should be insulated with material having a thermal resistance of
>0.625m2K/w, in order to prevent condensation on the exterior of the duct to
the unit.
A minimum distance of 200mm between the appliance and any bends in
ductwork is recommended.
3.2 Pre-Commissioning
The unit must not be used during site construction or the clean-up
period, as cement and plaster dust can be abrasive, potentially affecting
the performance and reliability of the fan.
Whilst the property is drying out, very high moisture levels are likely to
occur. Therefore it is advisable that if building works are complete the
unit is left running. If the building works are not complete, please close
or cover the air valves to prevent condensation forming in the ductwork
and unit due to the natural migration of warm air.
IMPORTANT
Any air intake terminal MUST be installed in accordance with
the appropriate regulation.
As a guide, the BS5440 series of British Standards deals with
this issue and currently states that an air intake must be at a
minimum distance of 300mm from a gas boiler balance flue.
Installers are advised to be aware of the requirements of this
standard when installing 'through the wall' supply air ducting.
2
3
4
Sealing Ducting to Unit
Removable Blanking Caps
Typical Ceiling Installation Duct Arrangement

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
Installation Manual
4.0 ELECTRICAL INSTALLATION
IMPORTANT
For good EMC practice, any sensor cable or switched live
cables should not be placed within 50mm of, or on, the same
metal cable tray as other cables.
IMPORTANT
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.
All electrical connections must be carried out by a qualified electrician.
To prevent water ingress, the supply cord should be run so the lowest point is
below the cable entry grommet.
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.
4.1 Electrical Information
Voltage: 230V 1ph 50Hz
Consumption: 0.7A
The cable from the mains power supply should be connected to a fixed
wiring installation, via a fused isolator, in accordance with current IEE wiring
regulations.
4.2 Wiring diagrams
Only the 5 Core cable is supplied with the unit, any other
components in diagrams below are not included.
The below are examples of potential wiring layouts, alternatives
are possible and may be necessary, depending on the installation
requirements.
4.2.1 Unit Serving Kitchen & Bathroom
Fuse 2A
MAINS
230V
50Hz
light
Room
Light
switch
(Double
Pole)
N
L
3 Pole
isolator
Kitchen switch
Blue
Brown
Black
Optional 3rd speed switch to
activate purge set point.
Supply cord
from unit
Grey
Green/yellow
Fuse 2A
MAINS
230V
50Hz
Room
lights
Light
(Double
switches
Pole)
N
L
3 Pole
isolator
Kitchen switch
Blue
Green/yellow
Brown
Black
Supply cord
from unit
Grey
Optional 3rd speed switch to
activate purge set point.
5
6
Wiring - Kitchen & Bathroom
Wiring - Kitchen & 2 Bathrooms
4.2.2 Unit Serving Kitchen & Two Bathrooms

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
Installation Manual
5.0 COMMISSIONING
Due to potential access to live parts adjustment of set points must
only be carried out by a suitably qualified person, adjustment
should only be carried out using an VDE approved insulated
terminal screwdriver.
The clear panel covering the ventilation controls has an adhesive
backing which should be exposed and sealed post commissioning to
prevent tampering and ensure the IPX4 rating is met.
All commissioning set points can be accessed through the access holes
of the control cover (Figure 1).
For required airflow rates please refer to the design specification for the
property or building regulations approved document F.
Correct commissioning is essential to ensure the ventilation rates
are met. It also ensures the unit is not over ventilating and causing
excessive power consumption.
Adjustment valves should be locked in place to prevent further
adjustment.
Once commissioned the home owner/tenant should be informed that
the unit should not be adjusted as it will have a detrimental effect
on the indoor air quality and could result in condensation and mould
growth.
5.1 Humidity Adjustment (MEV-ECO-H Only)
The MEV-ECO-H contains an internal humidity sensor, when the unit
senses that the humidity exceeds the set point the unit will boost to
that set by the commissioned boost speed. The set point can be found
on the control cover of the unit (Figure 1) and is at its least sensitive
when turned fully clockwise, the mid-point is approximately 75% RH.
The sensor is measuring humidity from all the wet rooms at the same
time and should not be relied on to solely boost the unit. An additional
switch should be used local to the wet rooms ("Wiring diagrams" on
page 4).
7 MEV-ECO-H Ventilation Controls
6.0 MAINTENANCE
IMPORTANT
Isolation - Before commencing work make sure that the unit
and switched live control are electrically isolated from the
mains supply and switched live 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.
7.0 WARRANTY
The 5 year 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.
8.0 END-OF-LIFE AND RECYCLING
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.
IMPORTANT
Ensure that Nuaire product is made safe from any electrical
supply 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.
9.0 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]

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
Installation Manual
NOTES

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
Installation Manual
NOTES

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26. 05. 20. Document Number 671944Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA |nuaire.co.uk
MEV-ECO(-H)
Installation Manual
NOTES