NuAire MRXBOXAB-ECO5 User manual

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5 (Standard Unit)
MRXBOXAB-ECO5-OH (Opposite Hand Unit)
Mechanical Ventilation Units with Heat Recovery for Wall Mounting
Installation Manual
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 with screws to the spigot 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 Hazard Symbols
REFER TO INSTRUCTION MANUAL
Read and understand the installation and maintenance manual before installing,
operating or maintaining this product.
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:
•Protective Steel Toed Shoes - when handling heavy objects.
•Full Finger Gloves (Marigold PU800 or equivalent) - when
handling sheet metal components.
•Semi Fingerless Gloves (Marigold PU3000 3DO or equivalent)
- when conducting light work on the unit requiring tactile
dexterity.
•Safety Glasses - when conducting any cleaning/cutting operation
or exchanging filters.
•Reusable Half Mask Respirators - when replacing filters which
have been in contact with normal room or environmental air.
Nuaire would always recommend a site specific risk assessment by a
competent person to determine if any additional PPE is required.

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
2.0 INTRODUCTION
The ECO5 wall mounted range of units is designed to provide
mechanical supply and extract ventilation with heat recovery.
The unit is fitted with two independent fans. Each fan has full speed
control for background and boost ventilation rates. To recover heat
from the extract air the heat exchanger block is utilised. The heat
exchanger can recover up to 95% of the normally wasted heat.
3.0 MECHANICAL INSTALLATION
Installation must be carried out by competent personnel in accordance
with the appropriate authority and conforming to all statutory
governing regulations. All mains wiring must be in accordance with the
current I.E.E. Regulations, or the appropriate standards. Ensure that the
mains supply (Voltage, Frequency and Phase) complies with the rating
label.
Please note a clear working space is required around the installed unit
to allow the cover to be removed and provide sufficient access for
maintenance such as filter change. Allow a minimum of 360m in front
of the MRXBOXAB-ECO5.
The fan must be installed indoors, on a suitable wall 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 wall.
The unit must remain switched on at all times to maintain
ventilation within the dwelling. Turning the unit off will cause long
term damage to the unit and building fabric.
Extract air
from house
Intake air
Exhaust air
from outside
to outside
from house
to house
Supply air
Intake air
from outside
Extract air
from house
Supply air
to house Exhaust air
from house
to outside
1 Airflow Through unit (Standard Unit)
Extract air
from house
Intake air
Exhaust air
from outside
to outside
from house
to house
Supply air
Intake air
from outside
Extract air
from house
Supply air
to house Exhaust air
from house
to outside
2 Airflow Through OH unit (Opposite Hand Unit)
3.1 Wall Mounting
If fitting the MVHR in conjunction with a MRXBOX-AV5 the
hanging brackets supplied with the MVHR are redundant and
should not be used. The installation instructions supplied with
MRXBOX-AV5 should be followed.
The unit is designed for wall mounting, only on a solid wall. A
gypsum block or stud/plasterboard wall will not suffice.
1. One part of the mounting bracket (supplied) should be offered up
to the wall, ensuring it’s located horizontally. Mark the fixing points
through the pre drilled holes in the bracket and install with screws
(by others), whilst ensuring the interlock side is at the top (Figure 3).
2. Install the unit on the wall by ensuring the bracket fixed to the rear
of the unit interlocks over the wall mounted bracket (Figure 4).
Care must be taken to ensure the unit is installed true in all 3
dimensions. Failure to do so may result in overflow from the
internal condensation drip tray.
3 Wall Mounting Bracket
4 Mounting Unit Onto Bracket
3.1.1 Option 1 - Solid Wall
The MVHR unit fixed to a solid wall construction using the
mounting bracket provided.
Ducting in the
ceiling void.
Side view of unit
mounted on the
block wall in a
cupboard.
MVHR-DRAIN
Condensate drain,
uninsulated drain
pipe with min 5 o
fall running to SVP.
Valve in ceiling.
5 Solid Wall Mounted Unit Installation
3.1.2 Option 2 - Non-Solid Wall
If it is not practical to use a solid wall, the MVHR unit should be
fixed to a stud partition with a 25mm minimum thickness MDF
panel solidly fixed behind the plasterboard.
If fixing to a stud wall the MDF panel should extend, width wise, over a
minimum of 3 vertical studs with centres of no more than 400mm. Add
additional vertical supports if necessary.
Height wise, ideally, the MDF panel should extend from floor to ceiling
but as a minimum should be a least 2m high.
Fix the mounting bracket to the wall (Figure 3) and use the wall
mounted bracket to mount the unit on (Figure 4).

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
6 Non-Solid Wall Mounted Unit Installation
Ducting in the
ceiling void.
mounted in a
Side view of unit
a stud partition
cupboard fixed to
with the 25mm
MDF fixed behind
MVHR-DRAIN
the plasterboard.
Condensate drain,
uninsulated drain
pipe with min 5 o
fall running to SVP.
Valve in ceiling.
3.2 Loft Mounting
3.2.1 Option 1 - Tank Stand
The MVHR unit should be positioned on a tank stand using the
Anti-vibration tray assembly discarding the angle brackets.
Anti-vibration tray assembly (MRXBOX-AV5) is to be purchased
separately.
7 Tank Stand Loft Mounted Unit Installation
3.2.2 Option 2 - Angled Brackets
The MVHR unit should be positioned on a 25mm minimum
thickness MDF panel that is vertically fixed across the roof trusses
to form a solid false wall.
Add additional vertical supports if necessary. Use the Anti-vibration tray
assembly (MRXBOX-AV5) including the angle brackets, to be purchased
separately.
8 Angled Brackets Loft Mounted Installation
3.3 Off-Site Cupboard Construction
For off-site constructed cupboards adequate support must be included
in the steel frame to support the weight of the units in operation and to
allow for dynamic loads in transit to site.
If the unit is to be bolted to a plywood or MDF backboard then this
must be of sufficient thickness to support the unit’s weight and
through-bolted with washers fitted to spread the load.
The cupboard manufacturer should satisfy themselves that the method
of mounting is sufficient to support the weight of the unit in operation
and transit to site.
The top of the unit is to be suitably braced within the cupboard for
transport.
3.4 Condensate Drain
The condensate must be discharged under a water level in a U-trap
drainpipe or an alternative drain method which acts as an airlock. This
condensate discharge connection is suitable for 21.5mm Ø overflow
pipe. Solvent cement should be used to make the joint.
If using a U-trap please ensure the U-trap has been filled to a suitable
level of water to avoid any air locks. If the condensation pipe is fitted in
an unheated space the pipe should be in insulated to prevent freezing.
An MVHR-DRAIN is recommended for use as the primary
condensate take-off (Figures 10 and 11).
3.5 Extract / Input Areas
The unit is designed to extract air from all wet rooms e.g. bathroom,
kitchen, en-suite, utility room (with sink). WC’s do not need to be
ventilated if openable windows are fitted.
Supply air should be to all habitable rooms e.g. bedrooms and lounge.
Extract / input grilles should be adjustable valve types (not supplied).
External grilles are to have a minimum free area of 12,250 sq. mm.

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
3.6 Ducting
Before commencing ducting installation reference should be made
to building regulations document “Domestic ventilation compliance
guide”. This document supports ADF2010 and details installation,
testing and commissioning of all ventilation systems.
It is recommended that rigid ducting be used at all times. Flexible
ducting has a very high resistance and it is impossible to calculate how
much resistance will be on a system if used.
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. To prevent condensation on the outside of the outside air inlet duct
and the air outlet duct from the unit, these ducts should be insulated.
Ducting must be installed in such a way that resistance to airflow is
minimised. Bends should be kept to a minimum. A minimum distance
of 300mm between the appliance and any bends in ductwork is
recommended.
Ideally 150mm diameter or 204 x 60mm rectangular ducting should be
used. Refer to dwelling design drawing for further information (Figures
13 & 14). Ducting joints must be sealed with silicone type sealant and
shall be adequately and reliably fixed to the appliance.
3.7 Ventilation Flow Rates
ADF 2010 - Extract Ventilation Rates
Room Minimum High rate Minimum Low Rate
Kitchen 13 l/s Total extract rate
should be at least
the whole dwelling
ventilation rate given
in table 2.
Utility Room 8 l/s
Bathroom 8 l/s
Sanitary
Accommodation
6 l/s
Whole Dwelling Ventilation Rates
Number Of Bedrooms In Dwelling
1 2 3 4 5
Whole dwelling
ventilation rate
(l/s)1,2
13 17 21 25 29
Notes:
1. In addition, the minimum ventilation rate should be no less than 0.3
l/s per m² of internal floor area. (This includes all floors, e.g. for a two-
story building add the ground and first floor areas).
2. This is based on two occupants in the main bedroom and a single
occupant in all other bedrooms. This should be used as the default
value. If a greater level of occupancy is expected add 4 l/s per occupant.
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 balanced flue. Installers are advised to be aware of the
requirements of this standard when installing ‘through the wall’
supply air ducting.
Min 5o Drop
9 Condensate Trap Installation
Condensate pipe connection to
unit and a typical example of a
“U” trap drainpipe (Standard
configuration only).
Collar
10 MVHR-DRAIN Installation
Condensate drain,
uninsulated drain pipe with
min 5° fall running to SVP.
To SVP
“T” piece
MVHR Drain
To unit
To CONTRAP
11 "T" Piece CONTRAP & MVHR Drain Connection
When using a “T” Piece to connect the CONTRAP drainage and
the MVHR drain pipework the MVHR drain must always be fitted
before the “T” Piece to prevent condensate from feeding back into
the MVHR system.
3.8 ADF 2010 Ventilation Calculations Design of MVHR
Systems
The MVHR system has been sized for the winter period. Additional
ventilation may be required during the warmer months and it has
been assumed that the provisions for purge ventilation (e.g. openable
windows) could be used.
Step 1: For any design air permeability, determine the whole dwelling
ventilation supply rate from Whole Dwelling Ventilation Rates table.
As an alternative where the design air permeability is intended to be
more than (>) 5m3/(h.m2) 50 Pa, allow for infiltration for all dwelling
types by subtracting from the whole dwelling ventilation supply rate
from Whole Dwelling Ventilation Rates table; 0.04 x gross internal
volume of the dwelling heated space (m3).
Step 2: Calculate the whole dwelling extract ventilation rate by
summing the individual room rates for ‘minimum high rate’ from ADF
2010 - Extract Ventilation Rates table.
(For sanitary accommodation only, as an alternative, the purge
ventilation provisions given in ADF 2010 can be used where security is
not an issue. In this case ‘minimum high extract rate’ for the sanitary
accommodation should be omitted from the step 2 calculation).

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
Step 3: The required airflow rates are as follows:
•The maximum whole dwelling extract ventilation rate (e.g. boost)
should be at least the greater of step 1 and step 2. Note that the
maximum individual room extract rate should be at least those
given in ADF 2010 - Extract Ventilation Rates table.
•The minimum air supply rate should be at least the whole building
ventilation rate found in step 1.
For Scotland refer to BRE Digest 398.
For further information refer to “Domestic Ventilation Compliance
Guide” www.planningportal.gov.uk/buildingregulations/approved
documents/partl/compliance
3.8.1 Pre Commissioning MRXBOX MVHR Units
MRXBOX units are designed to ventilate the whole dwelling and must
not be used during site construction or the clean-up period. Cement
and plaster dust can be abrasive and can affect fan performance
and reliability. Please ensure that the filters are checked prior to
commissioning to ensure there is no build-up of dust or debris.
While the property is drying out, very high moisture levels are likely
to occur. Therefore it is advisable that if the installation and building
works are complete the unit is left running. If the building works are
not complete please close the air valves or cover up the air valves to
prevent condensation forming in the ductwork and the MRXBOX unit
due to natural migration of warm air.
3.9 Dimensions
658
623
432
Side ViewFront View
Top View
4 x 150mm dia.
Spigots
458
16
120
226
226
Unit Weight = 25Kg
Mounting Bracket
(not to be used
when unit is fitted in
conjunction with
MRXBOX-AV5)
12 Unit Dimensions

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
3.10 Ducting Arrangements - Standard Unit Configuration
3.10.1 Circular Ducting
13 Typical Circular Ducting Arrangement For Wall Mounted Units
Air supply
to lounge
in ceilings.
via Air Valve
Extract air
from
kitchen/
bathroom
in ceilings.
via Air Valve
Exhaust air from
kitchen/bathroom to
outside via louvre grille.
Minimum distance as specified
in building regulations.
Intake air
from outside
via louvre grille.
All duct between MVHR
unit and atmosphere to
be insulated*.
*Insulated
supply duct.
Top of ceiling void.
Air supply to
bedrooms
in ceilings.
via Air Valve
mounted unit.
Nuaire wall
MVHR-DRAIN
Condensate drain, uninsulated
drain pipe with min 5ofall running to SVP.
*Insulated
extract duct.
3.10.2 Rectangular Ducting
14 Typical Rectangular Ducting Arrangement For Wall Mounted Units
Exhaust air from
kitchen/bathroom to
outside via air brick.
Minimum distance as specified
in building regulations.
Intake air
from outside
via air brick.
All duct between MVHR
unit and atmosphere to
be insulated*. *Insulated
supply duct.
Air supply
to lounge
in ceilings.
Extract
via Air Valve air from
kitchen/
bathroom
in ceilings.
via Air Valve
Air supply
to bedrooms
in ceilings.
via Air Valve
Top of ceiling void.
mounted unit.
Nuaire wall
MVHR-DRAIN
Condensate drain, uninsulated
drain pipe with min 5ofall running to SVP.
*Insulated
extract duct.
New
ALSO FROM NUAIRE -
range of thermal ducting,
an all-in-one insulated ducting system
(see installation document 671780)

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
4.0 ELECTRICAL INSTALLATION
For good EMC engineering practice, any sensor cables or switched
live cables should not be placed within 50mm of other cables or on
the same metal cable tray as other cables.
The electrical connection of the unit must be carried out by a qualified
electrician. The unit is supplied with a flexible cord for connection to
the mains supply.
Wiring is for
reference
purposes only,
connections
shown are factory
fitted.
The unit is
pre-wired with a 2
metre fly lead.
15 PCB Details
EXTRA
EXTRA
CT F
CT F
AN
Supply Extract Supply Extract Supply Extract
SPEED 1 SPEED 2 SPEED 3
4.2 Wiring Diagrams
4.2.1 Unit Serving Kitchen
17 Wiring Diagram - Unit Serving Kitchen
ECO5: 5A Fuse (BS 1362)
MAINS
230V
50Hz N
L2 Pole
Isolator
Blue
Brown
Black
Optional 3 Speed Switch
Supply Cord
From Unit
Grey
Green / Yellow
4.2.2 Unit Serving Kitchen and Bathroom
18 Wiring Diagram - Unit Serving Kitchen And Bathroom
ECO3: 3A Fuse (BS 1362)
ECO5: 5A Fuse (BS 1362)
MAINS
230V
50Hz
Light
Room
Light
Switch
(Double
Pole)
N
L
3 Pole
Isolator
Kitchen Switch
Blue
Brown
Black
Optional 3 Speed Switch
Supply Cord
From Unit
Grey
Green / Yellow
4.2.3 Unit Serving Kitchen and Two Bathrooms
19 Wiring Diagram - Unit Serving Kitchen And Two Bathrooms
MAINS
230V
50Hz
Room
Lights
Light
Switches
(Double
Pole)
N
L
3 Pole
Isolator
Kitchen Switch
Blue
Green / Yellow
Brown
Black
Supply Cord
From Unit
Optional 3 Speed Switch
Grey
ECO3: 3A Fuse (BS 1362)
ECO5: 5A Fuse (BS 1362)
4.1 Electrical Information
Voltage: 240V 1ph 50Hz
Consumption: 2 Amp
Fuse rating: 5 Amp
This unit must be earthed.
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.
Connector for
Ecosmart devices Power Cable
If more than one Ecosmart
sensor is required please
use MRXBOX-JB and refer
to leaflet No. 671700 for
installation instructions.
16 Ecosmart Device Connector

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
5.0 COMMISSIONING
The filters fitted inside the unit are protected with a plastic film.
Prior to commissioning remove the covers (Figures 22 & 23), take
off the film and replace.
1. For the required air flow rates please refer to the design specification
for the property, Section 3.7, or refer to building regulations ADF
2010.
2. The unit is supplied with independent control for both normal and
boost airflows (Figure 20).
3. Correct commissioning is essential to ensure the ventilation air flow
rates are met. It also ensures the unit is not over ventilating and
causing excessive power consumption.
4. Commissioning should be carried out in accordance with building
regulations document “Domestic ventilation compliance guide”.
www.planningportal.gov.uk/building regulations/approved
documents/partf/associated. A calibrated moving vane
anemometer and hood will be required to carry out commissioning.
5. Adjustment valves should be locked in place to prevent further
adjustment.
6. 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. The clear panel covering the control has an adhesive
panel which should be exposed and sealed post commissioning to
prevent tampering.
7. Speed 1 is limited to never exceed speed 2, when commissioning
speed 2 should always be set first.
20 Unit Control On Front Panel (Standard Configuration Only)
+ -
Post commissioning remove
adhesive backing and seal
Power Fan
Failure
+ -
Ventilation Controls
-
+
+
-
+
-
Speed 1
-
+
Speed 2 Speed 3
Supply Extract Supply Extract Supply Extract
Humidity adjustment
5.1 Humidity Adjustment
This product contains an internal humidity sensor fitted into the air-
flow extracting from the wet rooms. 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 front
of the unit (Figure 20) and is at its least sensitive when turned fully
clockwise. Note that 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. Additional switch should be used local to the wet rooms (Section
4.2).
5.2 Status Indication
The status of the unit is indicated by a series of LED’s on the front cover.
The variants are listed below.
The display on the unit control panel will not indicate when a
higher speed setting has been triggered by an external source, such
as an ES-PIR2 etc.
21 Unit Control On Front Panel (Standard Configuration Only)
HX Bypass
(AB units only)
Speed 1
Speed 2
Speed 3
Supply Fan Fault
Extract Fan Fault
Frost Protection
Filter Change
5.3 Integral Automatic HX Bypass
Intake and extract temperatures are monitored at the point the
airflows enter the unit, if the range falls within the set parameters the
bypass damper is opened automatically to target an indoor comfort
temperature all year round.
The extract temperature is an average from all wet rooms. If this
exceeds 25°C the unit may go into bypass depending on outside
temperatures.
5.4 Frost Protection
In the event of the intake air temperature at the unit dropping below
the predetermined set point (-5°C as standard) the supply fan will
reduce to minimum speed, once the temperature rises above the set
point the fan will return to its commissioned speed.
Frost protection will only activate after ten days of continuous run
time. If commissioning of the unit is outside of this time frame please
notify the after sales department prior to site visit.

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
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, and other paper components can be
largely recycled or fully processed in energy from waste centres.
•Filter Disposal: Cardboard framed filters should be fully processed
in energy from waste centres, contact your local civic amenity site
/ household waste recycling centre regarding metal / wire framed
filters.
•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.
Ensure that Nuaire product is made safe from any electrical / water
/ refrigerant supplies 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]
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.
6.0 MAINTENANCE
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.
6.1 Filters
Filters are to be inspected every 6 months and replaced every 12
months (or sooner if required). Failure to do so may impair the
performance and energy efficiency of this unit. A flashing LED
(Section 5.2) will indicate that a filter change is required. This indication
repeats every 12 months and will turn off automatically after 5 Days.
Remove the filter covers on the front panel of the unit by gripping the
two circular tabs either end of the filter covers and pulling away from
the unit. The filter can now be extracted by pulling the black removal
loop on the front edge of the filter. Once the filters have been inspected
return or replace them as necessary.
22 Removing Filter Covers
Filter covers
Filter being
removed
Filter cover
23 Removing Filters
Filter covers
Filter being
removed
Filter cover
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.

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
NOTES

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
NOTES

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28. 10. 21. Document Number 671956Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOXAB-ECO5
Installation Manual
NOTES