NuAire MRXBOX-ECO Installation Manual Download Page 1

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15. 12. 21. Document Number  671984

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

MRXBOXAB-ECO2B (Standard Unit)

MRXBOXAB-ECO2B-OH (Opposite Hand Unit) 

MRXBOXAB-ECO2B-D (Standard Unit)

MRXBOXAB-ECO2B-OH-D (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. 

Summary of Contents for MRXBOX-ECO

Page 1: ...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 under...

Page 2: ...ntake 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 wi...

Page 3: ...ructed 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...

Page 4: ...umber Of Bedrooms In Dwelling 1 2 3 4 5 Whole dwelling ventilation rate l s 1 2 13 17 21 25 29 1 In addition the minimum ventilation rate should be no less than 0 3 l s per m of internal floor area Th...

Page 5: ...ning 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 wor...

Page 6: ...Valve mounted unit Nuaire wall MVHR DRAIN Condensate drain uninsulated drain pipe with min 5o fall running to SVP Insulated extract duct 3 10 2 Rectangular Ducting 14 Typical Rectangular Ducting Arra...

Page 7: ...ing installation via a fused isolator in accordance with current IEE wiring regulations 4 2 Wiring Diagrams 4 2 1 Unit Serving Kitchen And Bathroom 16 Wiring Diagram Unit Serving Kitchen And Bathroom...

Page 8: ...t will boost to that set by the commissioned boost speed The set point can be found behind the front panel of the unit Figure 18 and is at its least sensitive when turned fully clockwise The sensor is...

Page 9: ...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 c...

Page 10: ...10 15 12 21 Document Number 671984 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO2B D Installation Manual NOTES...

Page 11: ...11 15 12 21 Document Number 671984 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO2B D Installation Manual NOTES...

Page 12: ...12 15 12 21 Document Number 671984 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO2B D Installation Manual NOTES...

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