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nuaire.co.uk 029 2085 8400 28. 10. 19. Leaflet Number 671566
Installation and Maintenance
FLATMASTER Low Energy Positive Input Ventilation Unit
2.5 Inlet/Outlet grille installation
If a fly screen is fitted it should be removed from both the internal and
external grille.
NOTE: When installing the internal grille, the louvres must slant
upwards to ensure the correct air circulation and the avoidance of
unpleasant down draughts.
The outside wall input grille louvres must slant downwards.
Standard 100mm dia ducting or 121 x 60mm ducting is used to connect
the Flatmaster to the input and discharge grilles.
2.5.1 Fixing all necessary ducting
A full range of ductwork and ductwork ancillaries are available. Please
contact Nuaire for further details.
IMPORTANT
Any air intake terminal MUST be installed in accordance with the
appropriate regulation.
As a guide, the BS5440 series of British Standards deals with this issue
and currently states that an air intake must be at a minimum distance
of 300mm from a gas boiler balanced flue. Installers are advised to be
aware of the requirements of this standard when installing ‘through
the wall’ supply air ducting. Similarly, supply and extract air grilles
should be at least 300mm apart.
Figure 9. Side input installation.
Figure 10. Rear input installation (view from above).
IMPORTANT
The internal grille must not be placed within
1.5m of a smoke alarm.
Alternative
spigot positions
(inlet only)
FLATMASTER
Input grille (louvres
slant downwards)
100mm dia / 121x60mm rectangular ducting
(note input side kept as short as possible)
100mm dia / 121x60mm
rectangular ducting
Outside wall
Room
(typical)
Hallway
(typical)
Discharge
grille (note
louvres
slant
upwards)
Minimum
height 1.8m
FLATMASTER
Note alternative
inlet spigot positions
Outside wall
Hallway
(typical)
Air input 100mm dia ducting
Air
discharge
Minimum
height 1.8m
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