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.
6.1 Humidity adjustment
This product contains an internal humidity sensor fitted into the
airflow extracting from the wet rooms. When the unit senses that the
humidity exceeds the set point the unit will boost to that set by the
commissioned boost speed. The set point can be found on the side of
the unit (see fig 8) and is at its most sensitive when turned fully
clockwise. Note that the sensor is measuring humidity from all the
wet rooms at the same time and should not be relied on to solely
boost the unit.
Additional switch should be used local to the wet rooms (see wiring
diagrams).
7.0 Maintenance/Cleaning
We recommend that the two G
4
filters are inspected and cleaned
after 6 months and replaced every 12 months. This will be indicated
by the first LED from the right hand side flashing, the LED will flash
for a two week period and then reset itself.
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. The heat exchanger should be fitted in
the same orientation as originally assembled e.g. front label facing
removable cover and top label nearest PCB.
Figure 15. Removing the two filter covers on the front panel
of the unit.
Figure 16. The filters can be removed by pulling on the black tab on the
visible end of the filters.
Telephone 02920 858 400
7
27. 11. 17. Leaflet number 671617
Installation and Maintenance
MRXBOX95B-450 WC and MRXBOX95B-450
Filter covers
Filter being
removed
Filter cover
8.0 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).
9.0 Warranty
MRXBOX95B-450 WC and MRXBOX95B-450 have a 1 year
warranty.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled, or
not installed, commissioned and maintained in accordance with
the details contained in this manual and general good practice.
The product warranty applies to the UK mainland and in
accordance with Clause 14 of our Conditions of Sale. Customers
purchasing from outside of the UK should contact Nuaire
International Sales office for further details.
10.0 After Sales Enquiries
For technical assistance or further product information, please
contact the After Sales Department.
