Maintenance; Status Indication - NuAire MRXBOX95-WM1 Installation Manual

Installation Manual
5.0 COMMISSIONING
The filters fitted inside the unit are protected with a plastic film.
Prior to commissioning remove the covers (Figures 18 & 19), take
off the film and replace.
1. For the required air flow rates please refer to the design specification
for the property, Section 3.6, or refer to building regulations ADF
2010.
2. The unit is supplied with independent control for both normal and
boost airflows (Figure 16).
3. Correct commissioning is essential to ensure the ventilation air flow
rates 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".
www.planningportal.gov.uk/building regulations/approved
documents/partf/associated. 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 clear panel covering the control has an adhesive
panel which should be exposed and sealed post commissioning to
prevent tampering.
7. Speed 1 is limited to never exceed speed 2, when commissioning
speed 2 should always be set first.
16
Unit Control On Front Panel (Standard Configuration Only)
Ventilation Controls
Extract Supply
Fan Fan
Run on Trickle Boost Trickle Boost
5.1 Thermal Bypass (Non AB models)
In the event of excessive outside temperatures, and to help prevent
over-heating, the supply fan will automatically reduce to a trickle
speed. Under these circumstances additional ventilation measures may
be required e.g. open windows or trickle vents (if fitted).

5.2 Status Indication

The status of the unit is indicated by a series of LED's on the front cover.
The variants are listed below.
The display on the unit control panel will not indicate when a
higher speed setting has been triggered by an external source, such
as an ES-PIR2 etc.
Nuaire |
Western Industrial Estate
Ext a r ct
F a n Su p p ly
a n F
Run on
Trickle Boost
Trickle Boost
For commissioning:
refer to user manual
Post commissioning remove
adhesive backing under
this section
Power Fan
Failure
| | | nuaire.co.uk
Caerphilly CF83 1NA
17
Unit Control On Front Panel (Standard Configuration Only)
Normal Mode
Boost
Supply Fan Fault
Extract Fan Fault
Frost Protection
Filter Change
Summer Bypass
(AB Units Only)

6.0 MAINTENANCE

It is important that maintenance checks are recorded and that the
schedule is always adhered to, in all cases, the previous report should
be referred to.
6.1 Filters
Filters are to be inspected every 6 months and replaced every 12
months (or sooner if required). Failure to do so may impair the
performance and energy efficiency of this unit. A flashing LED
(Section 5.2) will indicate that a filter change is required. This indication
repeats every 12 months and will turn off automatically after 5 Days.
Remove the filter covers on the front panel of the unit by gripping the
two circular tabs either end of the filter covers and pulling away from
the unit. The filter can now be extracted by pulling the black removal
loop on the front edge of the filter. Once the filters have been inspected
return or replace them as necessary.
18
Removing Filter Covers
Filter covers Filter covers
19
Removing Filters
Filter being Filter being
removed removed
Filter cover Filter cover
28. 10. 20. Document Number 671684
MRXBOX95(AB)-WM1
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