Toilet/shower pod ventilation.


The initial part of the ventilation system was an extract system, then later followed heating as shown lower down the page.

Pod Extract System

Not a complicated project. Basically using some 3" flexible hosing and another cheap computer fan. The photo below shows the exhaust vent/grill by the Thetford toilet unit. (F)




The above photo was taken with the pod out of the van (the ducting just slides in to the vent and fan housings without any need for additional fixings).

Below photo showing the hose from the above vent (B) down in to the fan housing (E). Other smaller hoses in the photo are the hot/cold water supplies (A), cooker gas supply (C) and sink drain for the kitchen cooker/sink unit (D).


As can be seen above, the fan unit is on the floor, through which it vents, thus saving another visible hole on the side on the vehicle. 

The vent comes out just behind the rear near wheel as shown by the arrow. The fan housing is a simple box housing a small (4") computer cooling fan and short rain water drain pipes to connect the hose and bottom vent on to.


The fan is wired so that it is energised when the shower/toilet light is switched on. There is also an override switch to have it running full time. Now that the Thetford Toilet cassette has also been fitted with a ventilation fan (DIY SOG unit), the above fan switches off when the toilet cassette hatch is opened to avoid 'fumes' being drawn out of the cassette in to the living space.
Heating System
With the door shut to the shower toilet pod, we found it was always at a considerably lower room temp to the rest of the van, so with a bit of extra ducting from the blown warm air system the pod could be heated as well.

The shot below shows how the ducting came from the warm air ducting inside the double bed box, through the base of the fridge cabinet to the lower corner of the pod.


Using a simple plastic 'exterior' vent on the inside of the pod, allows the warm air to enter the pod without water entering the warm air ducting.

Obviously to assist in the easy removal of the Pod from the van, I made the warm air ducting easily removable. Basically the hose/ducting adaptor slides down on to the aluminum back plate of the Pod air inlet vent as show in the following shots.


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