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Old 04-04-12, 11:34 AM   #10
nibs
Apprentice EcoRenovator
 
Join Date: Jun 2010
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This morning I am waiting for the shop to warm up then will be working on replacing the 2" flame tube with a 3" tube, and will add more copper tubing hoping to increase the water temp rise, one of the problems here is difficulty obtaining enough veggie oil, so want to maximize the efficiency.
The other change I am making this week is the addition of an automotive stick on oil pan heater, to heat the oil in the reservoir, this should allow me to burn any kind of waste oil, and allow us to operate the hot tub in colder weather.
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