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nuaire.co.uk
029 2085 8400
28. 07. 20. Leaflet Number 671838
MRXBOXAB-ECO4-1Z (Standard Unit)
MRXBOXAB-ECO4-1Z-OH (Opposite hand Unit)
Mechanical Ventilation Units with Heat Recovery
Installation and Maintenance
The EMC Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
1.0 INTRODUCTION
The ECO4-1Z range of units are designed to offer improved sound
levels and an aesthetically pleasing installation by housing a
Mechanical Ventilation with Heat Recovery (MVHR) unit and
attenuator inside an acoustically lined enclosure.
The MVHR unit is fitted with two independent fans to provide
mechanical supply and extract ventilation, 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.
The units also incorporate an integral humidistat and frost protection,
see sections 7.1 & 9.1 for details.
The unit is not supplied with any mounting brackets; a suitable
mounting structure with means of securing the unit in place is
required.
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. A minimum of 480mm is required in
front of the unit.
The fan must be installed indoors, on a suitable structure away from
direct sources of frost, heat and water spray or moisture generation. For
a vibration-free result the unit must be mounted to a solid structure.
Intake air
from outside
Extract air
from house
to house
Supply air
Exhaust air
from house
to outside
Extract air
from house
Intake air
Exhaust air
from outside
from house
to outside
Supply air
to house
Figure 1. Airflow through unit (Standard unit).
Figure 2. Airflow through OH unit (Opposite hand unit).
=
=
=
726
=
41
0
10
0
143
48
48
38
70
60
Summer / Winter Cable entry point.
Mains Cable Connection
Note:
Any Items being accomodated in structure design should
include sufficient clearance to allow for assembly tolerances
and for ease of installation when positioning on site.
43
43
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Condensate drain connection
(standard hand configuration).
For opposite hand configuration position
will be mirrored to the other side.
4x M10 Flanged head bolts
protruding from base to be
accomodated in structure design.
2x Rivet Heads
4x M8 Mounting Points
2x Hatched regions details
compulsory support areas,
further support may be required
depending on structure design
(supplied by others).
Figure 3. Mounting point locations.
