go green pay less no mess
12. POWER TO THE FAN.
The 240 / 12 volt transformer normally provided by Clivus Multrum plugs straight into a
normal 240 volt power point (GPO) to provide low voltage power for the fan.
Due to the low voltage and current from the transformer it is not necessary to have an
electrician install the fan and wiring from the transformer to the fan, however, the 240v
powerpoint MUST be installed by a licensed contractor. Note: The vent fan should
normally be wired for 24 hour operation.
The 12 volt wires from the transformer must be connected to the junction box on the
fan housing. At first glance the wire coming from the transformer looks like two black
wires joined together. A closer inspection will reveal that one of the black wires has a
fine white line on it.
Remove the cover of the small white junction box that is fixed to the fan housing.
Under this white cover there are two wires from the fan. Join the wire from the
transformer that has a fine white line on it to the red wire (positive) of the fan: join
the plain black wire from the transformer to the plain black wire (negative) of the fan.
Check that the fan operates, then replace the cover on the white junction box. If the
wiring is done in reverse the fan will simply not work.
There is a switch on the power transformer to change the output voltage from 12 volts.
Use of a lower voltage will still give adequate airflow for the system in most cases,
however, a setting of less than 6 volts may not operate the fan. We recommend the fan
is initially run at 12v.
13 VENTILATION SYSTEM ALTERNATIVES
There are two basic alternatives for ventilation:
1. Solar - where a 12-volt or 24-volt fan in the vent pipe is run by solar equipment
either 24hr or Daylight operation.
2. Passive - where there is no electrical fan in the system
13.1 SOLAR POWER OPTION
A separate sheet showing how the solar panel is connected to the fan has been
included with this manual if you have chosen this option. Use of a wind driven turbo
vent is recommended to assist ventilation when no power is available from the solar
supply. Other installation details are unchanged.
13.2 PASSIVE VENTILATION OPTION
It should be noted, that with a passive vent system, a continuous odour-free operation
cannot be guaranteed. If a passive system is to be installed it is important to keep the
toilet room separate from the main house and encourage as much natural draft through
the vent as possible.
This option is normally used only where the location is remote and/or has no power
source available, or if you are installing your toilet in a weekender that is visited
infrequently.
With this option, no electric fan is installed to draw air through the unit and therefore it
is not necessary to install the fan housing. If for some reason you do wish to install the
fan housing, then the fan should be removed so that the fan is not a restriction to the
airflow. If possible, the vent pipe should be straight without any bends in it.
To help maintain good airflow, a turbo vent can be fastened on top of the vent pipe
to draw air when there is wind blowing outside. The pipe’s natural chimney effect is
improved by painting the vent pipe black to absorb more heat from the sun, heating up
the air inside the pipe and enhancing the drawing efficiency.
PAGE 14
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