5
nuaire.co.uk
029 2085 8400
19. 08. 19. Leaflet Number 671858
Installation and Maintenance
MRXBOXAB-ECO-LP1SW Mechanical Ventilation Unit with Heat Recovery
5.0 DIMENSIONS (mm) OPPOSITE HAND CONFIGURATION
6.0 DUCTING ARRANGEMENTS, OPPOSITE HAND CONFIGURATION
700
View from top (A)
668 hole cent
res
View from control side
900
37
1
850
885 hole centres
153
End view
200
67
(B)
(A)
600
Spigot 2.
View from underside with cover removed (B)
Air
Supply
Spigot 3.
Extract
Air
Spigot 4.
Air
Exhaust
Spigot 1.
Air
250
Intake
Heat
exchanger
Bypass
chamber
Supply
fan
Extract
fan
21.5mm condensate pipe
Drip tray
Wire
frame
filter
Wire
frame
filter
Bypass
4.
damper
1.
2.
3.
735 (Filter access distance)
Removable
access
filter
Removable
access
filter
69
96.4
342
Required
working
space
Supply air to
lounge via
in ceilings.
Air Valve
Extract air from
kitchen via
in ceilings.
Air Valve
Supply air to
bedrooms via
in ceilings.
MVHR-DRAIN
Air Valve
condensate drain,
running to SVP.
mounted unit.
Nuaire ceiling void
Extract air from
bathroom via
in ceilings.
Air Valve
Exhaust air from
kitchen/bathroom to
outside via air brick.
Supply and extract
ducts from external
air bricks to the unit
needs to be insulated.
Top of ceiling void.
Minimum distance as
specified in Building
Regulations.
Intake air from
outside via air brick.
Figure 9. Also shows the working space required.
Figure 10. Typical side view example of a (standard unit) mounted in a ceiling void using 204 x 60mm rectangular ducting and air valves.
