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1

HeatMaster / Burn time in cold temps

« on: December 31, 2017, 05:52:25 AM »

-19 this morning and it was -12 last night when I filled my stove. I filled it at 8:30 last night and when I say filled, I mean filled. I checked a couple of pieces of wood that I threw in and they were both 18% moisture reading. Had my damper set at 60%. It probably would have made it 12 hours, but I didn’t want to have to have to fight with it to get it back piping again. My house is ~1800sq ft kepping it at 75 all of the time, also doing dhw and my garage is 1080sq ft using in floor and keeping it at 65 all of the time. Just wondering if that is a decent burn out of this stove in these temps? House is a bit drafty in spots

2

HeatMaster / GPM?

« on: December 12, 2017, 04:40:38 AM »

I'm sure this question has probably been asked, but I couldn't find anything on here. I was wondering if GPM has any bearing on wood usage or boiler efficiency? I guess what I mean is if I am running low flow(not what I should be running) will it cause my return temp back to the boiler to be lower and cause the it to drop the boiler temp faster than if I run at a higher GPM? The reason I ask is because after actually sitting down and figuring how much ft of head I have after 2 years of having this boiler, I figured out that I need a pump capable of 15.284 ft head to get my full 7gpm of flow through 1" pex. The pump that I have is not even capable of over coming that. On high speed my pump is only running around 5gpm according to the performance chart, so I'm not sure how what effect that has on my system. Maybe I'm figuring wrong. I'll tell you what I have. I have the small badger pump. My lines from boiler to the house and back round trip is 230' and my boiler is about 6ft lower than where the lines go into my house. They first go through an 20 plate hx then to a 16x19 hx in my forced air plenum. I run my boiler at 180F with 10 degree differential. My boiler takes quite a while to recover once it kicks on so I'm just trying to figure out if I need to change something in my system. I hope I worded all of this correctly. I appreciate any feedback from you guys. BTW, thank you to CountryBoyJohn for giving me advice to help me get my boiler burning like it should be.