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It's much easier to put the ducting in before you clad the walls. It can be done after but obviously takes longer. We got our mate to come around after the frame was finished to install the ducting and the switch wires. He came back after the plaster was up and the walls were painted to fit the connection point covers and install the unit. You'll also need a 240 volt outlet near where you want to install the unit.
This is the brand I have
http://www.astrovac.com.au/
Contact them as I think they have a brochure on selecting units and installation
The best place for one is down low. I have one in a 2 story house, with a garage underneath, so sort of 3 story. The unit is behind a false wall in the garage.
Never had blockages as everything falls down. If you are doing an extension, and want one in the future, buy the plumbing, and install the pipe in the walls. Don't forget to install the twin wire, low volt that turns the unit on. There are 2 types of 90 degree bends, sharp ones, which aren't good and more curved which are better.
If you have to run the pipes in the roof, don't have a T piece directly above an outlet. Have the outlet go up into the roof, then through 90 degrees and then into the side of a T piece. Otherwise, when using the outlet further away some of the debris will fall down the T piece and fill up the pipe.
Most hoses are 9 or 11 metres long, (Switched hoses are max of 9 metres) so get a bit of string and work out where your outlets will be, usually 2 or 3 per house. If you want a power head then you will need a power point nearby.
There are cyclone models available but then you have to empty a bin full of dust. The unit I have is bagged and the bags are about $7. Each one lasts for about 6+ months. So worth the money. We have a dog and cat and vacuum nearly everyday.
When you connect the unit to the plumbing use electrical or duct tape instead of gluing so that the unit can be easily removed for service etc. And put a outlet in the garage for the car and tools.
Fine as long as you kept young children, dogs, cats, rugs and side tables away from the inlet!:eek: Naah, just kidding, what the others have said, plus cats are alright near the inlet.;) :pQuote:
Originally Posted by GraemeCook
Mick
Especially when the grille is off eh? :D