In many applications it is desirable that a fan
continues to run for a period after the switch
is turned off for maximum efficiency. Some
examples are below:
In a bathroom, where a shower generates steam, it is useful
to run the fan for a period after the shower is turned off, as this
produces two desirable outcomes.
- The room is fully purged
of steam, minimising condensation and ensuring that internal
finishes are not prematurely damaged.
- When the timer
eventually turns off the fan, the air inside the ducting and
surrounding the fan’s motor will be dry, preventing moisture
being sucked into the motor.
Fantech’s comprehensive range of run-on timers includes:
VZ Model. The VZ24C and VZ6 feature run-ons of 24 and
6 minutes respectively and can be mounted into the motor
junction box or switch board.
VZ-TS Model. A direct wired unit that replaces the need for a
power point or wiring junction box to be installed. Adjustable
from 2 to 10 minutes.
VZM Model. This model is designed to be used with a duct
exhaust system controlled by up to three switches, for
example the toilet, bathroom and laundry. Adjustments from
0 to 28 minutes.
VA-VZ Model. Incorporates a run-on of 6 minutes and a speed
control function that adjusts the fan speed between 100% and
30%. This unit is also fitted with a 900mm extension lead and
pre-wired 4 pin plug which makes it easy to install.
VZ-PL Model. A plug in, quick and easy to install run-on
timer that is fixed at 6-minutes. Supplied standard with
a 900mm extension lead and pre-wired 4 pin plug that
ensures an additional active is provided to power the
fan after the standard switch is turned off.
Power Sense Module. It is easy to simply turn on a
clothes dryer and forget to also turn on the exhaust
fan. To help overcome this problem, Fantech have
introduced the VZ-ISNSE Power Sense Module which
automatically turns on the fan by sensing when the
clothes dryer is in operation, whilst avoiding excess
power consumption if the fan is left on when it is not
needed. The VZ-ISNSE Power Sense Module can be
used with a run-on timer, which will purge the room of
any moisture after the dryer is switched off.
For further information refer to pages L-10 to12
of the Fans by Fantech 2008 catalogue.
