0% Finance now available. Pay by instalments on orders over £500!
Send Your Plan

Nuaire - WM1 Unit

More Views

Interest Free EMI
Nuaire - WM1 Unit
£666.96 including VAT Excluding VAT £555.80
Nuaire - MRXBOX95-WM1
Description

Details

Nuaire - MRXBOX95-WM1

Nuaire's award-winning range of MRXBOX95 heat recovery systems are designed to provide optimised, balanced supply and extract mechanical ventilation with heat recovery. The MRXBOX95-WM1 is a wall or cupboard mounted MVHR system designed specifically for small to medium sized houses and apartments. It incorporates the latest generation of low voltage DC fans, counter flow heat exchanger and easily accessible controls. 

The heat exchanger block can recover up to 92% of the heat which would normally be wasted, giving this product a high score on SAP and helping you meet building regulations. Extremely low noise levels and low maintenance requirements make this a popular MVHR solution for new build properties.

KEY FEATURES:

  • Extracts up to 180 m3/hr @ 120 Pa
  • Suitable for houses up to 80 m2
  • Up to 92% thermal efficiency
  • 5-year warranty

MAIN FEATURES:

  • Supply and extract air ventilation with heat recovery
  • Boost operation with wall switch
  • Automatic frost protection

Filtration

The Fresh air is 100% fully filtered with two quality filters

Controllability

The units has two speeds and is adjusted manually by a boost switch, the fans can be independently adjusted at the unit with potometers located at the front of the unit, All versions have the following functions integrally mounted within the fan unit on a purpose made PCB, all such components pre-wired and factory fitted by the manufacturer: • Independent control of background supply and extract flow rates. • Independent control of boost speed supply and extract flow rates. • Integral heat exchanger frost protection. • Integral adjustable run on timer. • Fan failure indication. • Integral S/L terminal for boost from remote switch, e.g. light switch. • Indication and controls – The unit shall have clear LED visual indication for maintenance, servicing and operation mode, i.e. summer bypass, frost protection.

Features

Suitable for houses or apartments up to 80 m2. / extract from a Kitchen and 2 wet rooms

Construction

The enclosure is constructed of powder coated galvanised metal 

Motors

The unit has 2 x low energy, high efficiency d.c. fan/motor assemblies with sealed for life bearings, the impellers are backward curved centrifugal type.

Benefits of working with BPC Ventilation

  • Authorised Polypipe distributors
  • In-House design service
  • In-House Technical support
  • Specialists in easy to install DIY systems
  • 1000s of products in stock in our own warehouse
  • Large showroom with working units on display
  • Installer network throughout the UK and Ireland
  • All systems comply to all the latest building control regulations 
  • 0% Finance available 

 

Technical Specification

Technical Specification tab

Nuaire WM1 techical data

Model

Nuaire MRXBOX95-WM1

Heat Recovery efficiency %

92%

Digital Controller

No (accessory)

Boost Switch control

Yes - on/off

Interactive control

No

Humidity control

Room sensor (accessory)

Airflow rate Max m3/h

180

Airflow rate @ 100Pa m3/h

120

Max dwelling size M2

80

Max room extraction

Kitchen plus 2 extraction points

Specific fan power (lowest)

0.72 wls

Dimensions W x H x D (mm)

603 x 468 x 288

Weight

16kg

Filtration

2xG4

Summer Bypass 

no

Frost protection 

Yes - Motor

Sound level @3m db.(a)

17 - 33

Mounting

Wall

Ductwork connections

Top

Duct Diameter

4 x125mm

Condensate drain

yes

warranty

5-year

Country of manufacture

UK

Heat exchanger

Counterflow heat exchanger (PVC)

Available room sensors

Humidity, Timer,Co2, Pir

BMS - KNX

No

SAP Appendix Q

yes

Fireplace mode

no

Alarm system integration

no

Passive House

no

ERP rating

B

SKU

MRXBOX95-WM1

Download Documentation
Nuaire WM1 Catalogue
Nuaire WM1 installation
Further Information

How to install a Nuaire WM1 MVHR unit


Nuaire WM1 Wiring Requirements



  • 3amp switched spur beside unit

  • Optional boost switch - 4 core 1.0mm cable from recessed single box to unit (recommended if bathrooms are further than 5 meter from unit)

  • Digital controller- Comes complete with 15 meter of 6 core alarm cable with a RJ45 connection


Commissioning



  • The low and high speed levels can be adjusted using the digital control

  • further controls include- night time set speed set back - timed boost- sensor control - humidity sensor control - tempature control - summer bypass control - fault indication - filter indicator


Installation Guide


Nuaire WM1 1st Fix



  1. Position Nuaire WM1 unit proverbially on a wall or vertical timber frame with provided wall bracket

  2. Install wiring for controllers (see top of page for further details)

  3. Install condensation drain from unit to internal or external drain

  4. Install wall /Soffit vents or roof vents (Minimum 1.5 meter apart) Pipes are 125mm diamater

  5. Position distribution boxes in the chosen location (proverbially in a central location minimising duct lengths )

  6. Install silencer (if specified) to air supply distribution box

  7. Install solid rigid ductwork and between distribution boxes and MVHR unit, (If possible allow for insulated flexible ductwork for final connections of MVHR unit )

  8. Install radial pipe into the distribution box ,

  9. Cut to length and install pipe into ceiling plenum, (insure you install rubber seal onto pipe) secure pipe in place with fixing band or pipe clips


Warning! There can be either one or two pipes going from the distribution box to the plenum depending on the required airflow , Always check plan that will indicate 1 or 2 pipes Install insulated rigid or insulated flexible ductwork to external vents Seal all open pipes to prevent debris and moisture ingress


 


Nuaire WM1 2nd fix



  1. Trim ceiling Plenums to height of plasterboard (Easier to do before plastering ceilings)

  2. Install air valves to plenums (slightly open valve by two turns)

  3. Install all controllers

  4. Check that condensation drain has been fitted

  5. Switch unit on and follow the set up procedures

  6. Check air flow rates and commission system



Initial Design -


Pre designed plan - Please follow the plan ensuring the correct number of pipes to each area - Please note the plan is only a guide and you may have to reroute pipe work differently and reposition valves to suit layout of rooms


No Plan - If a design is not possible due to renovation, Retrofit or properties with multiple obstacles simply follow the listed recommendations


We would recommend that you



  • Install 2 x pipes from the distribution box to the room air plenum if air flow requirement exceed 10 L/s or if length over 15 meters  

  • Install 2 x pipes from the distribution box to the air extract plenum in the main shower rooms and Kitchen

  • All other areas only require a single pipe from the distribution box to the room air plenum

  • Radial ductwork is suitable to be fitted below your loft insulation providing superior heat retention Insulate any ductwork or Manifold/ Distribution boxes with a minimum of 25mm thermal duct wrap that go above insulation in unheated attic spaces

  • Slim-line manifolds are suitable for installation to concrete ceilings and only require a 100mm service void

  • Position supply plenums approx. 500mm from corner of wall (avoid areas above beds and wardrobes)

  • Position extraction plenums to outside of showers and above kitchen sink (not cooker)

  • Only extract from a room with a open appliance (stove) if there is a supply with equal or higher airflow

Reviews