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nuaire.co.uk
029 2085 8400
19. 08. 19. Leaflet Number 671858
The EMC Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
MRXBOXAB-ECO-LP1SW (Standard Unit)
MRXBOXAB-ECO-LP1-OHSW (Opposite Hand Unit)
Mechanical Ventilation Unit with Heat Recovery for
Ceiling Void Mounting
Installation and Maintenance
Spigot 3.
Spigot 2.
Spigot 1.
Spigot 4.
Figure 1. Airflow through unit (Standard Configuration)
Spigots 1 to 4
1. Intake Air (Fresh air from outside).
2. Supply Air (Supply in to house).
3. Extract Air (Warm stale air from house).
4. Exhaust Air (Waste air to oustide).
Spigot 1.
Spigot 4.
Spigot 3.
Spigot 2.
Figure 2. Airflow through unit (Opposite Handing)
Spigots 1 to 4
1. Intake Air (Fresh air from outside).
2. Supply Air (Supply in to house).
3. Extract Air (Warm stale air from house).
4. Exhaust Air (Waste air to oustide).
1.0 INTRODUCTION
The LP1 ceiling void mounted unit is designed to provide mechanical
supply and extract ventilation with heat recovery and incorporates HX
bypass.
The unit is fitted with two independent fans. Each fan has full speed
control for background and boost ventilation rates. To recover heat
from the extract air the heat exchanger block is utilised. The heat
exchanger can recover up to 80% of the normally wasted heat.
IMPORTANT
The unit must remain switched on at all times to maintain ventilation
within the dwelling. Turning the unit off will cause long term damage to
the unit and building fabric.
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience
and knowledge, unless they have been given supervision or instruction
concerning the use of the appliance by a person for their safety. Children
should be supervised so that they do not play with the appliance.
2.0 INSTALLATION
Installation must be carried out by competent personnel in accordance
with the appropriate authority and conforming to all statutory
governing regulations. All mains wiring must be in accordance with the
current I.E.E. Regulations, or the appropriate standards. Ensure that the
mains supply (Voltage, Frequency and Phase) complies with the rating
label.
Please note a clear working space is required around the installed unit
to allow the cover to be removed and provide sufficient access for
maintenance such as filter change.
The fan must be installed indoors, in a suitable ceiling void away from
direct sources of frost, heat, water spray or moisture generation. For a
vibration-free result the unit must be mounted to a solid surface in the
void.
The unit is designed for ceiling mounting only (Horizontal surface).
The unit is supplied with a steel mounting bracket.
Position & secure the steel bracket to the ceiling using appropriate
fixings (supplied by others), ensuring that the two outer fixing holes on
the unit are accessible (see fig. 2).
Note: The mounting bracket should be on the same side as the
condensate take off.
3. The unit can now be offered into position & located into the
mounting bracket.
4. Using appropriate fixings (supplied by others) fix the unit to the
ceiling. It is recommended that the unit is fixed through three holes on
the non-bracket side and the two outer holes on the bracket side.
Note: The unit must be installed in an upright position as shown for
the condensate drain and for compliance with safety regulations
relating to IP protection for water drip ingress.
Steel mounting bracket
Figure 3. Installing the unit using appropriate fixing bolts
(shown on standard unit).
IMPORTANT
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.
