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Leading the vent
through the roof
Leading the vent
through the wall
The Diffusor
Drain
Installation
Handling Effluent
Electrical
Considerations
As shown in the installation, the vent stack should end about
30” above the peak of the roof so that it is less subject to
downdraft. Where the pipe is taken through the roof, a roof
flashing may be required to seal the installation. If you are in
an area where snow shear is a danger, you may wish to install
a heavier pipe around the vent pipe where it exits from the
roof. If you do choose to do this, ensure that you seal the
area between the pipes with a waterproof substance to pre-
vent leaks.
When it is necessary to lead the vent through a wall, connect
one 45° elbow on the vent outlet on the unit. Using a 2” hole
saw or other appropriate tool, cut a hole through the wall board
behind the unit so that the vent pipe can be inserted into the
45° elbow. Cut a similar hole on the other side of the wall that
is slightly higher then the inner hole so that the vent pipe will
be angled upward at 45°. If installing through an exterior wall,
waterproof sealant will be required around the vent pipe where
it emerges from the building.
The diffusor provided with the unit is a simple device to be
installed at the top of the vent stack with the larger pipe pro-
truding above the smaller. To install, simply glue the diffusor
vertically on the topmost section of vent pipe. The diffusor
design encourages updraft, and discourages wind and weather
from going down the vent stack. We do not recommend
installing anything else on the top of the vent as it could impede
the venting. Unlike wind turbines, diffusors are less likely to
freeze in winter, and are more effective in calm weather.
The safety drain should be connected as it will be required.
- Remove the orange cap from one side of the overflow drain assembly.
- EXCEL: Place a 1” hose clamp over the end of the drain hose that will be connected to the overflow
drain assembly. Push the drain hose over the ribbed end of the over-flow drain and clamp with the
1” SS hose clamp. Connect the 1” hose to an approved drainage facility.
- COMPACT: Requires a 3/4” ID drain hose. Follow installation instructions above.
The following are possible options to take care of the liquid :
- Feed into a lined pit filled with gravel and sand. Such a
recycling bed also ensures a closed loop system.
- Feed into a small cesspit or “french drain”.
- Plumb into an existing septic or holding tank line.
Installation should be in accordance with applicable local
regulations.
The fan will run continuously 24 hours per day. A ground fault interrupter (GFI) circuit is recommend-
ed for any unit installed in an environment where it will be exposed to moisture. This may be installed
directly on the wall socket or at the circuit breaker. If you are in an area where you experience power
fluctuations, you may wish to install a surge protector.
Some 230V models may have an over current fuse protection on the heating element circuit which is
located on the electric box.
