I have been messing around with installing one of the cheap
heaters (similar to this https://www.ebay.co.uk/itm/Vehicle-D...r/323516716526
) on my boat
. I have other sources of heat for now, so this is really just a proof of concept
and debugging activity to see if this type of heater
or hold up at all compared to some of the significantly more expensive brands.
In any case, I ran into some issues rather quickly, which are not really the fault of the heater
(I believe) and I am looking for suggestions. The biggest problem at this time seems to be the exhaust
length. In order to get the exhaust
out of the back of the boat
, I needed an exhaust pipe on the order of 6m long. The heater ebay sellers had no problem selling me a pipe of this length, but of course I saw some posts online indicating that this might cause an issue, but of course I had to try it out first and see. I used the racing
exhaust wrap, multiple layers, around the length of the pipe. In the testing setup, the pipe starts low at the heater, and rises when it gets to the back of the boat.
This setup worked well enough for a few days / runs with no noticeable issues. At one point though, I tried running the heater with a set temperature, which made it work
in a low power
mode. I think this caused some issues, as the next day the heater had trouble starting, and some smoke came out. I attached a different, short exhaust pipe just to test, and the heater was able to start again, and a large chunk of carbon was found in the pipe after I did the test. I can only assume that there is some significant carbon buildup somewhere in the long exhaust pipe which is causing the issue. I will have to un-route the exhaust and see if that is the issue at some point.
My question is, is there any possible way to run an exhaust this long safely using one of these heaters? Are there any booster fans which might allow it to work, or any other methods? Could you fit a fan to the combustion air inlet to achieve the same effect? I don't have too many good mounting options available, so thats why I was trying to make it work.
Another question is about the combustion air inlet - currently it did not come with a long pipe, so it just draws air from the same location where the heater is (in a locker, with vents). Is it actually required to make another thru-hull for the combustion air inlet, or was this setup ok?
Appreciate the advice, and hopefully others and myself can learn from these experiments!