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27. 11. 17. Leaflet number 671617
Installation and Maintenance
MRXBOX95B-450 WC and MRXBOX95B-450
5.0 Wireless control
Note: This process should only be carried out by a competent and
qualified person.
The wireless control comes pre-set, if for any reason this needs to be
repeated e.g. a replacement switch required the following steps
should be followed. The unit needs to be powered to carry this out,
care should be taken of live electrics while carrying out the task.
Step 1.
Remove the cover from the wireless receiver on top of the
unit using a terminal screwdriver.
Step 2.
Press and hold push button M4 so that the buzzer sounds
continually, while it sounds press one of the buttons on the
switch that is to be paired. Repeat this process for any
additional switches that are to be paired.
Step 3.
The system should now be fully functional and the cover
can be re-fitted.
The duration of the timed boost may be adjusted between
5 - 30 mins using the trimmer as shown in fig 13. below.
A diagram of the wireless receiver is shown below, this is for reference
only as the unit comes pre-wired.
Figure 13. Wireless receiver.
5.2 Ecosmart controls
A maximum of two Ecosmart sensors can be connected directly to the
main circuit board, this can be done by cutting a small slit in the
20mm grommets situated on the top of the unit, the cable can then
be threaded through to gain access to the connections on the PCB. If
more than 2 connections are required an Ecosmart junction box will
be required.
When a sensor is activated the unit will switch to speed 3 and run-on
for 15 minutes after the signal is lost. Some sensors may also have
additional optional run-on features.
M1
Antenna input
(wire 8.5cm)
FUSE 10A
L2
FUSE 10A
L3
FUSE 10A
L4
M4
MT
5.1 Switches
The wireless switch is supplied with a battery but this is not fitted, to
fit the battery pull out the carrier at the base of the switch and insert
the battery with the text facing you.
To fix either switch to a wall or back box remove the front fascia by
inserting a terminal screwdriver into the two openings along the
bottom edge and prize open gently. The fixing points on the back
plate can then be accessed, once the switch has been secured the
front fascia can then be re-fitted.
Note: The wireless switch will typically operate up to a distance of
30m inside a building, however, this is dependent on the layout
and
construction of the building. This distance will be reduced
depending on obstructions e.g. walls. If the switch will not operate
an additional wire aerial is supplied attached to the outside of the
receiver cover, if required this can be fitted under the dome nut of
the receiver and should point vertically skywards.
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.
6.0 Commissioning
1.
The unit should be run for a minimum of 10 minutes to reach
steady state before commencing commissioning.
2.
The humidity sensor is initially set to its least sensitive position, this
should be adjusted during commissioning. Depending on storage
and site conditions the unit may boost due to high relative
humidity levels, this will continue until the level drops below the
specified set point.
3.
The unit is supplied with independent control for both normal and
boost airflows. (see fig. 14).
4.
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.
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 14. Detail of unit control on front panel.
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Post commissioning remove
adhesive backing under
this section
Power
060905
For commissioning:
refer to user manual
Ventilation Controls
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