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Surface Mounting on the Ceiling
The LOOVENT eco requires a 110mm diameter hole
through the ceiling. The body of the fan is fixed
with the screws provided, through the plaster board
into the support panel which should be a minimum of
18mm thick and firmly fixed to the joists (Figure 10).
NOTE: Fans should not be fitted to unsupported
plaster board
– good fixing will reduce noise
resonance.
Recessing in the Ceiling
When recessing fans in the ceiling, a plywood
support panel (min 18mm thick) should be fixed
between the ceiling joists to support the fan (Figure
11). The LOOVENT eco requires a 110mm diameter
hole through the support panel and a rectangular
cut-out in the ceiling board. (Refer to the enclosed
mounting template for shape, size & location of the
recess relative to the 110mm diameter hole). With
the screws provided, fix the fan to the support panel.
NOTE:
It may be preferred to stow away the pull cord for ceiling installations. If this is desired, it is
recommended that the cord is coiled and carefully stowed within the fan casing avoiding contact
with moving parts.
It should be noted, that the manual boost override function will not be available where the pull cord
is stowed. This also means the Timer and Motion Sensor Timer versions become single speed fans
(L or H) which should be selected at installation depending on the requirement. The Humidity and
dMEV versions remain 2 speed as they are automatically boosted by the humidity sensor and
remote switch respectively
Refer to the Electrical Installation section for wiring instructions and fitting of the fan module.
Good Practice Guide
Where flexible ducting is used the diameter must be maintained
and it is good ventilation practice that the ducting is extended to
90% of its possible length in order to maintain the best possible
airflow (Figure 12). Ensure that flexible duct connections are not
over tightened to the fan outlet spigot. To avoid reduced flow, an
elbow plenum (optional Airflow Part # 52641301) should be used
for all installations which contain bending of ducting. The fan and
ducting should be installed in accordance with the requirements
of the Domestic Ventilation Compliance Guide, part of the
Building Regulations. The LOOVENT eco will maintain 15l/sec
over 6m of flexible ducting including 2 x 90° bends
To avoid the backflow of condensation into the fan in ceiling
installations it is good practice to fit a condensation trap
(optional
– Airflow Part #51978301) to the vertical outlet
duct of the fan (Figure 13).
Figure 11
Figure 12
Figure 13
Figure 10
