6
iii)
T model: Move one of the following dip switches into the ON position.
a.
Dip switch 1 = Low speed (same as trickle speed)
b.
Dip switch 2 = Medium (Utility) speed
c.
Dip switch 3 = High (Kitchen) speed
iv)
HTP model: The HTP model has two boost speed options, one speed option
for the Timer function (via LS) or pullcord and another speed selection for the
Humidistat function. Move one dip switch into the ON position for LS/pullcord
and one for Humidity speed selection. It is recommended for both Kitchen and
Utility room installations to set the Humidity Boost speed to Medium (utility).
This will ensure the room is kept dry but reduce the noise from the fan.
a.
Dip switch 5 = Humidity Boost Low speed (same as trickle speed)
b.
Dip switch 6 = Humidity Boost Medium (Utility) speed
c.
Dip switch 7 = Humidity Boost High (Kitchen) speed
d.
Dip switch 1 = LS/Pullcord Boost Low speed (same as trickle speed)
e.
Dip switch 2 = LS/Pullcord Boost Medium (Utility) speed
f.
Dip switch 3 = LS/Pullcord Boost High (Kitchen)
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 lower 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)
NOTE:- On installation it is possible that the humidity controller will run continuously until
it has acclimatized to the environment.
The fan’s relative humidity (RH) set-point is factory set to switch the fan on at about
75%RH. This set point can be raised or lowered by altering the upper adjuster of the two
on the PCB (
fig.4 & 7
).
i.
To LOWER the set-point, turn the humidity adjuster
(fig.4 & 7 )
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)
ANTI-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
2
cable
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.
Summary of Contents for Centrif Duo DP 25 63 20D
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