I Burn Corn
Old Corn Forum
Old Corn Forum
Profile for Norman Pancura (pancura)
26 Jan 2011
Last Visit Date:
27 Jan 2011
I am running an M250 on pellets. The standard BTU rating for a lb of pellets is 8000 BTU. So a bag(40 lbs) would contain 320,000 BTU. The stove is rated at 250,000 btu/hour so in 24 hours is 6GBTU. Dividing this number by energy in a bag provides a maximum burn rate of 18.5 bags a day theoretically.
At one point I was achieving 10 bags but now its more like 6-8 bags/day. I am trying to determine what is going on? Its more difficult. I have three 150,000 BTU oil burners connected by a tekmar controller. The pellet stove is the primary boiler an is supposed to be running 24-7 providing the 250,000 BTU/hour. My calculations at 250,000 BTU/hour based on previous years 40,000 liters oil consumption averaged over a month led me to believe I could almost eliminate my dependence on oil except for a few days a month in the coldest of the season. Pay back was supposed to be in the green first year making me money the day I purchased this equipment.
I have had problems with CB product, CB support but like the product and I'm warming up somewhat. First heating season the equipment melted due to power failure. I'm still pissed that CB is still selling an unsafe product that requires a 50 cent fix. Anyway I'll vent later. This year I can't seem to get the performance out of this boiler and I an seeking assistance from the community of pellet boiler users.
I have burned a couple of airrators and have a stainless one now. I noticed that the 90% of the air holes were plugged. I was hoping this was the culprit for poor output. It is not. I have had the control board replaced. I have also had the upper auger motor replaced. There is less than a year's use on this boiler.
I had a service call into CB and they returned my call, they are quite professional and very knowledgeable about their product and offered me the following advice. When maxed out, ie all bars full in max mode and air at a third, the drop window should be full of product. The bottom auger should run for 3 seconds and be off 14 seconds. If this is the case the technician claims the furnace is working to its fullest potential. I have not had a chance to check it out.
So this is good starting point If I can confirm the furnace is working at its potential it must be my tekmar controller bringing the oil boilers on line too quickly. I may have to start bugging their technical staff.
In any case, I was wondering if anyone in the community is cranking the M250 out to its maximum and what feed rates are people achieving?
Posted 2 years, 3 months ago
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