Dumont MRXBOXAB-ECO2, User Manual

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1.0 APARTMENT VENTILATION
Note : It is strongly recommended to read the Operational Guide for this chapter.
Figure 2 Ventilation 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

Replacement tempered air is
introduced into bedrooms and
living areas by the system,
therefore background ventilators
in windows are not required