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Installation and Maintenance
6.0 Commissioning
The filters fitted inside the unit are protected with a
plastic film. Prior to commissioning remove the covers
(fig 13), take off the film and replace.
1. For the required air flow rates please refer to the design
specification for the property, follow 2.4, or refer to building
regulations ADF 2006/2010.
2. The unit is supplied with independent control for both normal
and boost airflows. (see fig. 11).
3. Correct commissioning is essential to ensure the ventilation
air flowrates are met. It also ensures the unit is not over
ventilating and causing excessive power consumption.
4. Commissioning should be carried out in accordance with
building regulations document "Domestic ventilation
compliance guide". A calibrated moving vane anemometer
and hood will be required to carry out commissioning.
5. Adjustment valves should be locked in place to prevent
further adjustment.
6. Once commissioned the home owner / tenant should be
informed that the unit should not be adjusted as it will have
a detrimental effect on the indoor air quality and could result
in condensation and mould growth. The label covering the
control has an adhesive panel which should be removed post
commissioning to prevent tampering.
Figure 11. Detail of unit control
on front panel.
6.1 Summertime boost facility
The unit has to ability to override both the trickle and boost
speeds to operate the fan to maximum airflow. See wiring
diagram for details of operating this facility.
7.0 Status Indication
The status of the unit is indicated by a series of LED's on the
front cover. The varients are listed below.
Normal Mode
Supply Fan Fault
Extract Fan Fault
Boost
Summer Boost
Frost Protection
Filter Change
MRXBOX95-WH1 Mechanical Ventilation with Heat Recovery
8.0 Maintenance/Cleaning
Isolation - Before commencing work make sure that the
unit, switched live and Nuaire control are electrically
isolated from the mains supply and switched live supply.
We recommend that the two G3 fiters are inspected after
6 months, and replaced every 12 to 18 months.
The filters can be removed from the unit by removing the two
filter covers on the front panel of the unit. Take hold of the two
circular tabs either end of the filter covers and pull out.
The filter can now be extracted by pulling the removal loop on
the front edge of the filter. Once the filters have been inspected
return or replace them as necessary.
Inspect the heat exchanger every 5 years. Generally check
for damage and security of components. Refit cover.
Figure 12. Removing
the two filter covers
on the front panel of
the unit.
Figure 13.The filters
can be removed by
pulling on the black
tab on the visible end
of the filters.
9.0 Replacement of Parts
Should any component need replacing Nuaire keep extensive
stocks for quick delivery. Ensure that the unit is electrically
isolated, before carrying out any work.
Note: The supply cable must be replaced by an electrically
competent person.
When ordering spare parts, please quote the serial number
of the unit and the ARC number of the purchase if possible.
(This information will be available on the fan label).
10.0 Warranty
The 5 year warranty starts from the day of delivery and
includes parts and labour for the first year and parts only for
the remaining 4 years. This warranty is conditional on planned
maintenance being undertaken
11.0 Service Enquiries
Nuaire can assist you in all aspects of service. Our Technical
Support department will be happy to provide any assistance
required.
060924
6
Filter covers
Filter being
removed
Filter cover
.
Technical Support
on 029 2085 8400
08. 05. 14. Leaflet Number 671548
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