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15. 03. 21. Document Number  671838

Nuaire | 

Western Industrial Estate 

Caerphilly 

CF83 1NA 

|

 

nuaire.co.uk

MRXBOXAB-ECO4-1Z (Standard Hand Unit)

MRXBOXAB-ECO4-1Z-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-ECO4-1Z

Страница 1: ...hildren 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 commissionin...

Страница 2: ... long term damage to the unit and building fabric This appliance is not intended for use by persons including children 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 applianc...

Страница 3: ... insulated to prevent freezing Nuaire recommend MVHR DRAIN be used as the primary condensate take off Figures 8 and 9 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 gri...

Страница 4: ...nd 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 220 x 90mm rectangular ducting should be used refer to dwelling design drawing Figures 11 12 Ducting...

Страница 5: ...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 p...

Страница 6: ... with min 5 o fall running to SVP MVHR unit Nuaire MVHR DRAIN Condensate drain uninsulated drain pipe with min 5 o fall running to SVP 3 10 2 Rectangular Ducting 12 Typical Rectangular Ducting Arrangement For Wall Mounted Units 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 Mini...

Страница 7: ...g regulations 4 2 Wiring Diagrams Disconnection from the supply mains must be incorporated within the fixed wiring in accordance with the wiring regulations and shall have a minimum contact separation of 3mm 4 2 1 Unit Only MAINS 230V 50Hz N L 3 Position Switch Ancillary code MRXBOX95 3SWITCH Blue Green yellow Brown Black Supply cord from unit Grey L 1 2 5A Fuse BS1362 2 Pole Isolator 14 Wiring Di...

Страница 8: ...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 7 Adjustment valves should be locked in place to prevent further adjustment 8 Once commissioned the home owner tenant should be informed that the unit should not be adjusted as it will have a detrimental effect ...

Страница 9: ... right is reserved to make such changes without prior notice 6 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 ru...

Страница 10: ...10 15 03 21 Document Number 671838 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO4 1Z Installation Manual NOTES ...

Страница 11: ...11 15 03 21 Document Number 671838 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO4 1Z Installation Manual NOTES ...

Страница 12: ...12 15 03 21 Document Number 671838 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO4 1Z Installation Manual NOTES ...

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