Just started the system last week after a few upgrades. Things are going OK, but I am paying more attention to temperatures this season than I did last winter for my first season. The EKO 40 is burning great with strong gasification and reaching the 190F setpoint fairly quickly. I am trying to model my burns similar to what Maple1 and others are doing, with only one burn per day, or if weather is decent, maybe every other day, as long as the storage tank is hot. A typical burn this year has started with top of storage around 120 to 140F, bottom of storage around 80 to 100F. Start fire, boiler circulator kicks on at 155F, Danfoss valve seems to start letting some flow from bottom of storage around 160 to 170F or so at the top of the boiler. Top of storage tank will start heating up, but the boiler can reach the 190F setpoint after an hour or so and go into idle mode while the top of storage is only at 155F or so. Shouldn't the Danfoss valve open on up to let more storage and less boiler bypass flow through? Seems like this would let more cold water in from the bottom of storage and keep the boiler from reaching its setpoint and going into idle mode so quickly. There is a 'balancing' valve in the bypass line. It is a ball valve that appears a little more than half closed. I have not adjusted it. All I have to measure temps is a infrared point and shoot. Also, should the flow from the gasifier to storage go into the bottom or the top of the storage tank to best 'charge' the 1000 gallons of storage? Storage tank is old propane tank about 4 feet in diameter. It does seem to stratify well, with about 40F difference between top and bottom. I believe this is good for the two circulators that feed my water to air coils in my heat pump's air handlers, but maybe not so good for charging the storage tank. A picture of the system is below. Let me know if you have questions. I read a post on here about stratification versus mixing on storage, but I will be danged if I can find it now.
167.3 KB Views: 163