Dumont MRXBOXAB-ECO2 User manual

TABLE OF CONTENTS
0. INTRODUCTION ....................................................................................................................1
1.0 APARTMENT VENTILATION ...................................................................................................3
2.0 OPERATIONAL GUIDE............................................................................................................5
2.1 Filter and Routine Maintenance .......................................................................................... 5
2.2 Filter Maintenance............................................................................................................... 6
2.3 Routine Maintenance .......................................................................................................... 6
2.4 Technical Support ................................................................................................................ 6

1 | Page
0. INTRODUCTION
THE MAIN EQUIPMENT FOR YOUR HEATING AND VENTILATION IS IN YOUR UTILITY CUPBOARD WITH YOUR WASHER AND
DRYER AND COOLING EQUIPMENT IS WITHIN THE CEILING VOID.
THE APARTMENTS HAVE A HEAT RECOVERY VENTILATION SYSTEM INSTALLED THAT EXTRACTS AIR FROM THE BATHROOMS
AND KITCHEN AREA AND RECYCLES THE HEAT TO SUPPLY FRESH AIR TO THE LIVING ROOM AND BEDROOMS. THIS
VENTILATION IS ALWAYS ON TO ENSURE THAT THE APARTMENT IS ALWAYS VENTILATED. THE HEAT RECOVERY IN THE
UNIT AND THE HIGH-PERFORMANCE WALLS AND WINDOWS MEAN THAT VERY LITTLE HEATING IS NEEDED IN THE
APARTMENT.
Model: MRXBOXAB-ECO2 Location: Utility Cupboard
Figure 1 MVHR Unit

2 | Page

3 | Page
1.0 APARTMENT VENTILATION
Note: It is strongly recommended to read the Operational Guide for this chapter.
Figure 2Ventilation Schematic
Cilantro has installed a Nuaire MVHR Ventilation Unit in the Apartments, Located in the Utility
Cupboard.
The Home Air Circulation Fan Unit moves air around your property at such a low level that you never
feel it, but it takes all the stale air from inside your house and replaces it with clean fresh air, 24
hours a day, 7 days a week. Your home is ventilated without the need to open windows which can
let in noise, fumes and can compromise security.
It will supply filtered fresh air to the living areas and will extract air and fumes from the wet areas:
Bathrooms, En-suites, Kitchens and Utility Cupboard. The fresh air supply will be pre-heated through
the MVHR heat exchanger element using the heat on the extracted air (previously pre-filtered).
When the integrated humidity sensor detects a higher humidity than the one set up in the system, it
will turn on the Boost extract fan in the bathroom & Kitchen areas. The boost extract fan will remain
on until the humidity has gone below the setpoint. The unit will also turn into Boost mode when
light switches in Bathrooms and Kitchen are turned on.

MVHR supplies & extracts air
continuously at a low rate with
boost facility to extract pollutants
and supply fresh outdoor air at a
higher rate as required
Can be controlled either; -
Manually via single or multiple
switches - Automatically, typically
via humidity or other sensors These
should be clearly marked and
located in an accessible location
in or near the wet rooms -
Normally the MVHR unit is sited
remotely in a loft space or
cupboard and ducted via rigid
duct to outside air using the most
economical route
Repla
cement tempered air is
introduced into bedrooms and
living areas by the system,
therefore background ventilators
in windows are not required

4 | Page
Figure 3 APARTMENT MVHR OPERATIONAL SCHEMATIC
MVHR (MECHANICAL VENTILATION WITH HEAT RECOVERY) PROVIDES FRESH FILTERED AIR INTO A
BUILDING WHILST RETAINING MOST OF THE ENERGY THAT HAS ALREADY BEEN USED IN HEATING
THE BUILDING. HEAT RECOVERY VENTILATION IS THE SOLUTION TO THE VENTILATION NEEDS OF
ENERGY EFFICIENT BUILDINGS. MECHANICAL VENTILATION WITH HEAT RECOVERY (MVHR), HEAT
RECOVERY VENTILATION (HRV) OR COMFORT VENTILATION ARE ALL NAMES FOR THE SAME
THING. A HEAT RECOVERY VENTILATION SYSTEM PROPERLY FITTED INTO A HOUSE PROVIDES A
CONSTANT SUPPLY OF FRESH FILTERED AIR, MAINTAINING THE AIR QUALITY WHILST BEING
PRACTICALLY IMPERCEPTIBLE.
MVHR WORKS QUITE SIMPLY BY EXTRACTING THE AIR FROM THE POLLUTED SOURCES E.G. KITCHEN,
BATHROOM, TOILETS AND UTILITY ROOMS AND SUPPLYING AIR TO THE ‘LIVING’ ROOMS E.G.
BEDROOMS, LIVING ROOMS, STUDIES ETC. THE EXTRACTED AIR IS TAKEN THROUGH A CENTRAL
HEAT EXCHANGER AND THE HEAT RECOVERED INTO THE SUPPLY AIR. THIS WORKS BOTH WAYS, IF
THE AIR TEMPERATURE INSIDE THE BUILDING IS COLDER THAN THE OUTSIDE AIR TEMPERATURE
THEN THE COOLING IS MAINTAINED IN THE BUILDING.

5 | Page
2.0 OPERATIONAL GUIDE
Your apartment is equipped with a Nuaire Ventilation System (MRXBOX95). The MVHR Fan is located
within the Utility Cupboard, it’s comprised of air extraction points in the Kitchen and bathrooms, and
air supply points in Bedrooms and Living Room.
You don’t need to setup anything. MVHR Fan is working automatically.
Note: These systems are heat recovery ventilation systems, NOT AIR-CONDITIONING SYSTEM. It
offers the highest level of comfort and control available.
Note: The most common concern with home owners is that heat ventilation devices create noise.
With Advance, absolute optimization of every element does everything possible to minimize
generation and transmission of both motor and airflow noise.
Important:
Unit must not be switched off, product is designed to run continuously.
2.1 Filter and Routine Maintenance
All ventilation units require periodic maintenance. Routine maintenance must only be carried out by
a suitably qualified and competent person.

6 | Page
2.2 Filter Maintenance
Filters should be cleaned when indicated by the unit control panel (“Filter Change”) at varying
intervals depending on the external environment or every 6 months if not indication is shown in the
Unit.
Note: It’s recommended that the 2 filters are inspected after 6 months and replaced every 12 to 18
months.
NOTE: Prior to start, make sure the unit has been switched off
Remove the 2 filter Covers Remove filters by pulling the black tab
Vacuum the filters or replace them Replace in reverse order
If the filters need to be replaced, contact Nuaire
Sales by calling 029 2085 8200 quoting the model
reference.
The product should be professionally serviced every two years.
2.3 Routine Maintenance
Cleaning Exterior
For best results use a clean cloth and warm water with a mild detergent solution. Do not use
solvents or abrasive cleaners.
2.4 Technical Support
Contact Details
For more information on how to operate your Home Air Circulating Fan please call technical support
on: 029 2085 8200