Nuaire Limited
Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2085 8400 F: 029 2085 8444 E: info@nuaire.co.uk W: www.nuaire.co.uk
1
1.0 Introduction
The Nuaire LPXBOXAC-2 unit is designed to provide
mechanical supply and extract ventilation with heat
recovery.
The unit is fitted with two fans with independant adjustable
speed control. A plate heat-exchange constructed from
aluminium is used to provide up to 66% heat recovery.
2.0 Installation
I
nstallation must be carried out by competent personnel
conforming to all statutory and governing regulations
including the current wiring and CDM regulations.
Special attention must be paid to the size and weight of the
unit and the handling method to locate the unit in situ.
The unit is designed to be ceiling mounted in the horizontal
plane with access panel and condensate drain pipe on either
side.
The fan must be fitted indoors, away from any direct
sources of heat, water spray or moisture generation.
Temperature range -5
O
C to 40
O
C.
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 is designed to be wired direct to the mains supply
through a fused spur isolator (by others).
With the unit fixed in position and working from underneath
the installation bring the mains wiring through the chosen
rubber cable entry grommet at the new connection box.
Additional grommeted holes are provided to allow additional
wiring to each blower.
Installation of the unit
The integral mounting bracket supplied with the unit can be
offered up to a chosen mounting position, the fixing points
marked through and the bracket installed with 4 screws
(by others).
The unit can then be offered into position, locating the
tongues on the mounting bracket into the slots in the hold-
ing supports on either side of the unit. When positioned fix
the unit to the mounting bracket with M5 screws.
Various damper/inlet spigot positions can be utilised as
required to suit the system ductwork and extract grilles.
To reduce air leakage, spigots should be sealed to the unit
by silicone sealant or similar (by others).
All inlet dampers are ’closed’ as knockouts when delivered
but can be opened using a sharp knife. (See figure 3).
After the spigot has been fixed adjust the damper with a
screwdriver. (See figure 4).
See figure 5 for spigot location and sizes.
The condensate drain must be connected via a trap into
either a suitable waste water system or to the outside of
the building. Ensure the pipe from the condensate drain falls
away from the unit.
16. 06. 15. Leaflet Number 671391
LPXBOXAC-2
Mechanical Ventilation with Heat Recovery
Installation and Maintenance
Figure 3.
Cut through the
acoustic foam round
the circumference of
the damper.
Damper can be
swivelled on the
2 body casing
hinges.
Fixing screw holes for
M5 screws in the
mounting bracket.
Holding supports
either side of unit to allow
alternative mounting option.
Figure 4.
When spigot is in
position, damper can
be adjusted using a
screwdriver.
Figure 2.
Figure 1.
Discharge
Intake
Intake
Extraction
Extraction
Supply
Access covers on underside.
The EMC Directive
2004/108/EC
The Low Voltage
directive
2006/95/EC
