NuAire MRXBOX95-WM2 Installation Manual Download Page 1

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28. 10. 20. Document Number  671685

Nuaire | 

Western Industrial Estate 

Caerphilly 

CF83 1NA 

|

 

nuaire.co.uk

MRXBOX95-WM2 (Standard Unit)

MRXBOX95-WM2 -OH (Opposite Hand Unit)  

MRXBOX95AB-WM2 (Standard Unit)

MRXBOX95AB-WM2-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 electrical supply 

must be carried out by a qualified electrician in accordance with latest edition of the wiring 

regulations.

• 

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. The replacement cord must be of the same 

technical specification as the original cord or greater.

• 

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 MRXBOX95-WM2

Page 1: ...less 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 ...

Page 2: ...neration For a vibration free result the unit must be mounted to a solid wall The unit must remain switched on at all times to maintain ventilation within the dwelling Turning the unit off will cause long term damage to the unit and building fabric These units are not recommended for loft mounting 3 1 Wall Mounting The unit is designed for wall mounting only on a solid wall A gypsum block or stud ...

Page 3: ... be fitted before the T Piece to prevent condensate from feeding back into the MVHR system Min 5o Drop 9 Condensate Trap Installation Condensate pipe connection to unit and a typical example of a U trap drainpipe Standard configuration only 6 Non Solid Wall Mounted Unit Installation Ducting in the ceiling void mounted in a Side view of unit a stud partition cupboard fixed to with the 25mm MDF fixe...

Page 4: ...n the minimum ventilation rate should be no less than 0 3 l s per m of internal floor area This includes all floors e g for a two story building add the ground and first floor areas 2 This is based on two occupants in the main bedroom and a single occupant in 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 intak...

Page 5: ...rming in the ductwork and the MRXBOX unit due to natural migration of warm air 3 8 Dimensions mm 12 Unit Dimensions 607 507 Mounting Bracket 356 Spigots 4 x 125mm Ø 416 16 90 172 172 Side View Front View Top View 3 9 Ducting Arrangements Standard Unit Configuration 3 9 1 Circular Ducting 13 Typical Circular Ducting Arrangement For Wall Mounted Units Air supply to lounge in ceilings via Air Valve E...

Page 6: ...e mains supply Voltage Frequency and Phase complies with the rating label For good EMC engineering practice any sensor cables or switched live cables should not be placed within 50mm of other cables or on the same metal cable tray as other cables The electrical connection of the unit must be carried out by a qualified electrician The unit is supplied with a flexible cord for connection to the main...

Page 7: ...on 4 Commissioning should be carried out in accordance with building regulations document Domestic ventilation 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 5 Adjustment valves should be locked in place to prevent further adjustment 6 Once commissioned the ...

Page 8: ...cted return or replace them as necessary 21 Removing Filter Covers Filter covers 22 Removing Filters Filter covers Filter being removed Filter cover 7 0 WARRANTY The 5 year warranty starts from the day of delivery and includes parts and labour for the first year The remaining period covers replacement parts only This warranty is void if the equipment is modified without authorisation is incorrectl...

Page 9: ...t If ordering spares please quote the serial number of the unit together with the part number if the part number is not known please give a full description of the part required 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 alte...

Page 10: ...10 28 10 20 Document Number 671685 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOX95 AB WM2 Installation Manual NOTES ...

Page 11: ...11 28 10 20 Document Number 671685 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOX95 AB WM2 Installation Manual NOTES ...

Page 12: ...12 28 10 20 Document Number 671685 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk MRXBOX95 AB WM2 Installation Manual NOTES ...

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