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28. 10. 21. Document Number  671956

Nuaire | 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. 

Содержание MRXBOXAB-ECO5

Страница 1: ...en 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 ope...

Страница 2: ... 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 wa...

Страница 3: ...llow 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...

Страница 4: ... 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 ...

Страница 5: ... 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 ...

Страница 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 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 MV...

Страница 7: ...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 Un...

Страница 8: ...xtract 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 ...

Страница 9: ...red 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 MAINTENANCE It is important that maintenance chec...

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

Страница 11: ...11 28 10 21 Document Number 671956 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO5 Installation Manual NOTES ...

Страница 12: ...12 28 10 21 Document Number 671956 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO5 Installation Manual NOTES ...

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