Diesel heater exhaust tubing

[Rappey]

I have a huge lazarette but no cockpit lockers. Lazarette is often full of wet ropes and fenders so dampness was one reason I chose to fit my chinese heater under my amidships interior cupboards.
Worked out very well as the ducted heat goes into a T straight out of the heater then feeds two vents forwards and two rear and has a balanced feed to both lengths of ducting .
The cupboard already has a roof vent for fresh air.
The heaters exhaust goes straight up the bulkhead then 750mm along the roof before going up and out through the roof using the old paraffin heater chimney hole.
My exhaust is 34mm stainless tube with stainless elbows and a proper silencer. Figured that since I was over the recommended 2m run a larger bore and smooth walls uphill would work well for the gas flow ?
I insulated the exhaust with a proper sock. Was impressed how good it was.
Added a few more layers to the exhaust but strangely it didn't feel that much cooler with extra layers ??

 

[peter gibbs]

Chinese heater nearly installed, tried fitting the exhaust run today, 24mm marine exhaust outlet & a 24mm silencer - tried fitting the supplied flexible hose, the plain end fits ok on the heater but when cut the internal diameter is too small... Should I buy a length of genuine Eberspacher/Webasto exhaust flexible which appears to be 24mm internal diameter. Will it seal ok on the spigots or should I use exhaust paste as well?
Also the exhaust will be about 12/13" above the waterline on the transom so should I put a swan neck in the tubing?

Whole length of the exhaust must be insulated and ties arranged clear of hot tubing.

Swan neck absolutely essential.

UK spec tubing should be used - consider the insurance consequences, if not to standard. Be aware - the exhaust output is delivered at a pressure and this can only sustain exhaust clearance over a certain length. Be sure you don't exceed the capacity to properly exhaust the spent fuel overboard.

PWG

 

[pvb]

Whole length of the exhaust must be insulated and ties arranged clear of hot tubing.

Swan neck absolutely essential.

UK spec tubing should be used - consider the insurance consequences, if not to standard. Be aware - the exhaust output is delivered at a pressure and this can only sustain exhaust clearance over a certain length. Be sure you don't exceed the capacity to properly exhaust the spent fuel overboard.

Did you notice that you'd replied to a 2-year old post? I reckon he might have got it sorted ages ago.