NuAire MRXBOXAB-ECO2-AESW Installation And Maintenance Manual Download Page 5

5

nuaire.co.uk 

029 2085 8400

04. 11. 19. Leaflet Number  671859

Installation and Maintenance

MRXBOXAB-ECO2-AESW Mechanical Ventilation Unit with Heat Recovery

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.

MVHR unit.

Nuaire 

MVHR-DRAIN

Condensate drain, uninsulated 

drain pipe with min 5

o

 fall running to SVP.

*Insulated 

extract duct.

4.0 DUCTING ARRANGEMENTS - STANDARD CONFIGURATION

Figure 12. Typical ducted arrangement for a wall mounted unit using circular ducting.

Figure 13. Typical ducted arrangement for a wall mounted unit using rectangular ducting.

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 

MVHR unit.

Nuaire 

MVHR-DRAIN

Condensate drain, uninsulated 

drain pipe with min 5

o

 fall 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) 

Summary of Contents for MRXBOXAB-ECO2-AESW

Page 1: ...n with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the appliance by a person for their safety Children should be supervised so that they do not play with the appliance 2 1 Transportation fixings To prevent damage during transportation the product is shipped with securing fixings the...

Page 2: ...ical example of a cupboard mounted unit Standard unit fixed to a stud partition with the MDF panel fixed behind the plasterboard 2 5 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 solvent cement ...

Page 3: ...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 125mm diameter or 220 x 90mm rectangular ducting should be used Refer to dwelli...

Page 4: ...step 1 and step 2 Note that the maximum individual room extract rate should be at least those given in table 1 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 ...

Page 5: ... duct 4 0 DUCTING ARRANGEMENTS STANDARD CONFIGURATION Figure 12 Typical ducted arrangement for a wall mounted unit using circular ducting Figure 13 Typical ducted arrangement for a wall mounted unit using rectangular ducting Air supply to lounge in ceilings via AirValve Extract air from kitchen bathroom in ceilings via AirValve Exhaust air from kitchen bathroom to outside via louvre grille Minimum...

Page 6: ...ions in fig 14 are factory fitted The unit is pre wired with a 2 metre fly lead Fuse 2A 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 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...

Page 7: ...or 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 see wiring diagrams Nuaire recommend that filters are inspected every 6 months and replaced every 12 months A flashing LED section 7 0 will indicate that a filter change is required This indication repeats every 12 months and ...

Page 8: ...our for the first year and parts only for the remaining 4 years 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 Cond...

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