Nuaire Group MRXBOX95AB-WH1QA11178 Installation And Maintenance Manual

1.0 Introduction
The WH1 wall mounted range of units is designed to provide
mechanical supply and extract ventilation with heat recovery
and incorporates an integral automatic summer bypass.
The unit is fitted with two independent fans. Each fan has full
speed control for background and boost ventilation rates.
To recover heat from the extract air the heat exchanger block
is utilised. The heat exchanger can recover up to 95% of the
normally wasted heat.
Integral automatic summer bypass - The bypass damper
shall open automatically via a wax actuator allowing the air to
bypass the heat exchanger to deliver fresh filtered air during
the warmer months.
Figure 1. Airflow through unit (Standard unit).
Exhaust air
from house
to outside
Figure 2. Airflow through OH unit (Opposite hand unit).
Supply air
to house
Nuaire Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2085 8400 F: 029 2085 8444 E: info@nuaire.co.uk W: www.nuaire.co.uk
MRXBOX95AB-WH1QA11178 (Standard Unit)
MRXBOX95AB-WH1QA12243 (Opposite hand Unit)
Mechanical Ventilation Unit with Heat Recovery
& Summer Bypass for Wall Mounting
Installation and Maintenance
Intake air
from outside
Supply air
to house
Extract air
from house
Extract air
from house
Exhaust air
from house
to outside
Intake air
from outside
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.
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 appliance.
2.0 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. Ensure that the mains supply
(Voltage, Frequency and Phase) complies with the rating label.
Please note a clear working space is required around the
installed unit to allow the cover to be removed and provide
sufficient access for maintenance such as filter change.
Please allow a minimum of 250mm in front of the unit.
The fan must be installed indoors, on a suitable wall away
from direct sources of frost, heat, water spray or moisture
generation. For a vibration-free result the unit must be
mounted to a solid wall.
Note: Care must be taken to ensure the unit is installed true
in all 3 dimensions. Failure to do so may result in overflow
from the internal condensation drip tray.
For installation details of MRXBOX95AB-WH1 and ancillary
MRXBOX-AB-WH1 refer to project specific documentation
agreed as part of contract.
1
The EMC Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
09. 06. 16. Leaflet Number 671671