10. The product must be connected to the electricity supply by means of a triple-pole isolating switch with a mini-
mum contact opening distance greater than 3 mm.
11. To ensure optimum operation, do not block the air intake and exit vents.
12. The area where the device is located must be adequately ventilated to ensure correct operation
(UNI CIG 7129).
13. If the fan is extracting from a room containing a fuel burning appliance, the installer must ensure that air
replacement is adequate both for the fan and the fuel burning appliance.
14. Any ducting used must be free from blockages
15. Your fan must not be exhausted into a duct which is already used for any other purpose (see Approved
Document F1 2006 for guidance)
OPERATION
1.
The
Microbox
is suitable for ceiling or wall installation.
2.
If one of the spigots is not connected to ducting a safety grille
MUST
be fitted to that spigot, so that it is
impossible for any moving part to be touched.
3.
This fan runs continuously at a preset trickle speed and has an independently switched boost
speed. The trickle & boost speeds are selectable during the installation by adjusting the trimmers in
the controller (see wiring diagrams).
Electrical Connection
WARNING: these appliances must be earthed and all wiring must conform to current IEE Regulations and
all applicable standards and Building Regulations.
• The unit is supplied with a mains rated 4 core flexible cord (black, brown, grey and green/yellow)
• The unit is suitable for 230V, 50Hz Single phase supply fused at 3A.
• A fused spur box, or triple pole switch having a minimum contact separation of 3mm must be used for
isolation.
Note
: if the unit is connected to the lighting circuit, which is fed via a 6 amp MCB, then no local fusing is
necessary. A local isolating switch must still be used.
• Boost controls must not be located within 1 metre of a cooker or where they may be affected by excessive heat
or moisture
• Boost controls should be clearly identified and conveniently located.
• The boost speed can be triggered by a switched live connection from a variety of external devices including:
- PIRFF (passive infra red)
*
-
DRH240 (dynamic remote humidistat)
*
-
THM (thermostat)
*
-
a light switch (if more than one light switch is used,
each one must be a double pole switch)
- a remote switch/pull cord
(
*
PIRFF, DRH240 and THM may have an integral over-run timer which controls the length of time that the fan will
continue to operate at its boost speed after the boost has been switched off)
CLEANING AND MAINTENANCE
1.
Before carrying out any maintenance or cleaning operations the unit MUST be isolated from the
electrical supply
.
2.
CLEANING AND MAINTENANCE SHOULD BE CARRIED OUT BY A QUALIFIED PERSON.
3.
Before attempting to remove the motor impeller assembly disconnect the cable inside the control box.
4.
Remove the screws (Fig.8) and lift out the motor/fan assembly.
5.
Clean the motor/fan assembly either with a dry brush or a dry cloth.
6.
Electrical parts
cannot
be cleaned.
7.
Reassemble in the reverse order to above.
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