NuAire MRXBOXAB-ECO-LP2SW Installation And Maintenance Manual

NuAire MRXBOXAB-ECO-LP2SW Installation And Maintenance Manual

Mechanical ventilation unit with heat recovery for ceiling void mounting
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MRXBOXAB-ECO-LP2SW (Standard Unit)
MRXBOXAB-ECO-LP2OHSW (Opposite Hand Unit)
Mechanical Ventilation Unit with Heat Recovery for
Ceiling Void Mounting
Installation and Maintenance
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.
nuaire.co.uk
029 2085 8400
20. 08. 19. Leaflet Number 671876
The EMC Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
1

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Summary of Contents for NuAire MRXBOXAB-ECO-LP2SW

  • Page 1 MRXBOXAB-ECO-LP2SW (Standard Unit) MRXBOXAB-ECO-LP2OHSW (Opposite Hand Unit) Mechanical Ventilation Unit with Heat Recovery for The EMC Directive Ceiling Void Mounting 2014/30/EU The Low Voltage Directive Installation and Maintenance 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.
  • Page 2: Installation

    Spigot 2. Isolation - Before commencing work, make sure that the unit, switched Spigots 1 to 4 live and Nuaire control are electrically isolated from the mains supply and 1. Intake Air (Fresh air from outside). switched live supply. 2. Supply Air (Supply in to house).
  • Page 3: Condensate Drain Installation

    (with sink). Nuaire recommend MVHR-DRAIN be used as the primary condensate WC’s do not need to be ventilated if openable windows are fitted. take-off (see fig. 5 and 6).
  • Page 4 Installation and Maintenance MRXBOXAB-ECO-LP2SW Mechanical Ventilation Unit with Heat Recovery 3.4 Ventilation Flow Rates Table 1. ADF 2010 - Extract ventilation rates. IMPORTANT Room Min high rate Min low rate Any air intake terminal MUST be installed in accordance with the appropri-...
  • Page 5 Installation and Maintenance MRXBOXAB-ECO-LP2SW Mechanical Ventilation Unit with Heat Recovery 4.0 DIMENSIONS (mm) STANDARD CONFIGURATION Figure 7. Dimensions & Access Requirements (Standard) View from underside with cover removed (B) View from top (A) Supply 21.5mm condensate pipe Extract 885 hole centres Spigot 3.
  • Page 6 Installation and Maintenance MRXBOXAB-ECO-LP2SW Mechanical Ventilation Unit with Heat Recovery 6.0 DIMENSIONS (mm) OPPOSITE HAND CONFIGURATION Figure 9. Dimensions & Access Requirements (Opposite Hand Unit) View from underside with cover removed (B) View from top (A) Bypass Heat Bypass chamber...
  • Page 7: Electrical Connection

    Installation and Maintenance MRXBOXAB-ECO-LP2SW Mechanical Ventilation Unit with Heat Recovery 8.0 ELECTRICAL CONNECTION Figure 11. PCB Details IMPORTANT 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.
  • Page 8: Optional Controls

    Installation and Maintenance MRXBOXAB-ECO-LP2SW Mechanical Ventilation Unit with Heat Recovery 8.2 Optional Controls For further information contact Nuaire on 02920 858 400. 9.0 COMMISSIONING 10.0 STATUS INDICATION The status of the unit is indicated by a series of LED’s on the control box IMPORTANT cover.
  • Page 9 Control module filter being removed 12.0 REPLACEMENT OF PARTS Nuaire keep extensive stocks for quick delivery, should any component need replacing. Ensure that the unit is electrically isolated, before carrying out any work. Note: The supply cable must be replaced by an electrically competent person.

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