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17. 11. 21. Document Number  671861

Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk

MRXBOXAB-ECO3-AE(OH)SW & MRXBOXAB-ECO5-AE(OH)(SC/SW)

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 02920 858 400 

[email protected]

 

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. 

 
 

20 

Removing Filter Covers

 

Outer enclosure cover

MVHR unit cover

Filter

Heat Exchanger

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.

Summary of Contents for MRXBOXAB-ECO5-AESC

Page 1: ...cerning 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 i...

Page 2: ...se to house Supply air Exhaust air from house to outside Extract air from house Intake air Exhaust air from outside from house to outside Supply air to house 2 Airflow Through OH unit Opposite Hand Unit Intake air from outside Extract air from house to house Supply air Exhaust air from house to outside Extract air from house Intake air Exhaust air from outside from house to outside Supply air to h...

Page 3: ...ing the wall MVHR DRAIN brackets Condensate drain uninsulated drain pipe with min 5o fall running to SVP Valve in ceiling Unit weight 56kG 3 3 Condensate Drain The MVHR unit inside the enclosure is fitted with a straight coupling to allow 21 5mm overflow pipe not supplied to be attached using solvent cement the pipe should be passed through the flexible adhesive backed cover plate before the solve...

Page 4: ...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 m 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 expe...

Page 5: ...ut 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 8 Dimensions 11 Unit Dimensions 754 5 2 7 ...

Page 6: ...ceilings via Air Valve mounted unit Nuaire wall MVHR DRAIN Condensate drain uninsulated drain pipe with min 5o fall running to SVP Insulated extract duct 3 9 2 Rectangular Ducting 13 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...

Page 7: ... underside of the MVHR unit within The cable should be fed through rubber blanking plug to provide a seal when the cover is re fitted 4 2 Wiring Diagrams 4 2 1 Unit Serving Kitchen And Bathroom 15 Wiring Diagrams 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 Optiona...

Page 8: ...en 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 18 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 sho...

Page 9: ...ve a full description of the part required The serial number will be found on the identification plate attached to the unit casing Telephone 02920 858 400 aftersales nuaire co uk 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 MAINTENANC...

Page 10: ...10 17 11 21 Document Number 671861 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO3 AE OH SW MRXBOXAB ECO5 AE OH SC SW Installation Manual NOTES ...

Page 11: ...11 17 11 21 Document Number 671861 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO3 AE OH SW MRXBOXAB ECO5 AE OH SC SW Installation Manual NOTES ...

Page 12: ...12 17 11 21 Document Number 671861 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO3 AE OH SW MRXBOXAB ECO5 AE OH SC SW Installation Manual NOTES ...

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