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For the P models only:
iii.
Link terminals 1 and 3 for Utility boost speed.
iv.
Link terminals 1 and 4 for Kitchen boost speed.
IMPORTANT: Do not link across terminals 1 and 2.
3. TIMER ADJUSTMENT (T and HTP models only)
The overrun time period is factory set to about 15 minutes. The overrun time period may
be adjusted from about 1-30 minutes by altering the upper adjuster of the two on the
control PCB (fig.4 & 7).
i.
To REDUCE the operating time, turn the timer adjuster ANTI-CLOCKWISE.
ii.
To INCREASE the operating time, turn the timer adjuster CLOCKWISE.
4. RELATIVE HUMIDITY ADJUSTMENT (HTP model only)
The fan's relative humidity (RH) set-point is factory set to switch the fan on at about
60%RH. This set point can be raised or lowered by altering the lower adjuster of the two
on the PCB (fig.4 & 7).
i.
To LOWER the set-point, turn the humidity adjuster (fig.4 & 7 ) ANTI-CLOCKWISE. This
makes the fan more sensitive to RH, i.e. the fan will come on at a lower RH.
ii.
To RAISE the set-point, turn the humidity adjuster (fig.4 & 7) CLOCKWISE. This makes
the fan less sensitive to RH, i.e. the fan will come on at a higher RH.
The fan will continue to run at boost after the RH has dropped below the set point for the
time period set by the timer adjustment (see 3. TIMER ADJUSTMENT, above)
C. WIRING.
WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE
ISOLATED FROM THE POWER SUPPLY DURING INSTALLATION OR
MAINTENANCE.
Use 0.75mm
1.
Select and follow the appropriate wiring diagram (fig. 9 or 10).
2.
Use the Cable Clamp provided (fig.4).
3.
Check all connections have been made correctly and ensure all terminal connections are
securely fastened.
D. SERVICING AND MAINTENANCE.
WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE
ISOLATED FROM THE POWER SUPPLY DURING SERVICING AND
MAINTENANCE.
1.
At intervals appropriate to the installation, the fan should be inspected and cleaned to ensure
there is no build up of dirt or other deposits.
2.
If fitted, remove the Filter (fig.2 & 3) and wash it and the front cover assembly in warm soapy
water. Dry them before replacing.
3.
Wipe the inlets and front face with a damp (not dripping wet) cloth until clean.
4.
Replace the filter.
5.
Turn the power to the fan back on.
2
cable
6
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