NuAire MRXBOXAB-ECO5-AE Installation Manual Download Page 1

1

30. 06. 20. Document Number  671957

Nuaire | 

Western Industrial Estate 

Caerphilly 

CF83 1NA 

|

 

nuaire.co.uk

MRXBOXAB-ECO5-AE (Standard Unit)

MRXBOXAB-ECO5-AE-OH (Opposite Hand Unit)

Mechanical Ventilation Units with Heat Recovery for Wall Mounting 

Installation Manual

EMC Directive

 

2014/30/EU

LVD Directive

 

2014/35/EU

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.

Summary of Contents for MRXBOXAB-ECO5-AE

Page 1: ... 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...

Page 2: ...r months 1 2 3 Airflow Through unit Standard Unit Airflow Through OH unit Opposite Hand Unit Transport Fixings 3 0 MECHANICAL INSTALLATION Installation must be carried out by competent personnel in accordance with the appropriate authority and conforming to all statutory governing regulations All mains wiring must be in accordance with the current I E E Regulations or the appropriate standards Ens...

Page 3: ...ceiling but as a minimum should be a least 2m high Fix the mounting bracket to the wall Figure 3 and use the wall mounted bracket to mount the unit on Figure 5 25 25 704 crs 9 1 dia 30 94 94 33 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 th...

Page 4: ... all other 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 I...

Page 5: ...sture 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 7 525 5 5 227CRS 1...

Page 6: ...sulated Insulated supply duct Top of ceiling void Air supply to bedrooms in 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 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...

Page 7: ...when the cover is re fitted 16 17 18 Unit Serving Kitchen Unit Serving Kitchen And Bathroom Unit Serving Kitchen And Two Bathrooms 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 Fuse 5A MAINS 230V 50Hz N L 3 Pole Isolator 3 Position Switch Ancillary code MRXBOX95 3SWITCH Blue Green yellow Brown Black Supply cord ...

Page 8: ...nit Control On Front Panel Standard Configuration Only Unit Control On Front Panel Standard Configuration Only 5 2 Status Indication The status of the unit is indicated by a series of LED s on the front cover The variants are listed below The display on the unit control panel will not indicate when a higher speed setting has been triggered by an external source such as an ES PIR2 etc HX Bypass AB ...

Page 9: ...f 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 21 Removing Filter Covers 7 0 WARRANTY The 5 ye...

Page 10: ...10 30 06 20 Document Number 671957 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO5 AE Installation Manual NOTES ...

Page 11: ...11 30 06 20 Document Number 671957 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO5 AE Installation Manual NOTES ...

Page 12: ...12 30 06 20 Document Number 671957 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOXAB ECO5 AE Installation Manual NOTES ...

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