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Old February 2nd, 2012, 08:46 PM
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Default New evaporator and homemade arch

I bought a Patrick Phaneuf 2x4 combo hobby pan . The pan has a 30" sap pan with 4.5 drop flues and a 18" divided syrup pan .During a test boil today the sap pan had a really good boil in the front but only about half of that amount near the stack .I had a rolling boil in about 10 minutes. The syrup pan was barely boiling at all. I have 1" of space under the flues at the chimney and 1.5" at the front of the ramp .
The firebox is 22" wide 27" deep and 20" from the grate to the bottom of the syrup pan . The flues stick into the firebox about 8" . I could look into the firebox and see the flames running between the flues but none going up to the sap pan .
I am burning dried Osage orange for fuel. The chimney is 8" with a damper in it . Is my firebox too deep ? Is there too much space between the grates and the bottom of the pan ? Do I need a baffle forcing the flames back to the front under the syrup pan ?
I'm new at this and need some experienced guidence . Thanks Tom
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Old February 2nd, 2012, 08:58 PM
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How long did you run it for ? did you play with the damper ? is it forced or natural draft ? how many times did you open the door to kook inside ? how long was the door closed ?
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Old February 2nd, 2012, 09:37 PM
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I ran it for about 30 minutes . I adjusted the damper to about 3/4 open . I looked in the door about 4 times , the door was closed the rest of the time . I am using a water heater flue evac. Fan for air thru 2 ducts pointed at the fire under the grates . Thanks Tom
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Old February 2nd, 2012, 09:44 PM
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Quote:
Originally Posted by Tom-saw View Post
I am using a water heater flue evac.
Tom whats this ? is the blower/fan pushing the air towards the door or towards the stack ?
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Old February 2nd, 2012, 09:54 PM
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close up the gap at the front of the flues. get it down to 1/2 inch. split your wood small, like split a 2x4 in 1/2. add wood quickly and keep the doors closed. play with your forced air maybe its to much
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Old February 2nd, 2012, 09:58 PM
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The fan is siting outside the. Arch blowing outside air in thru 2 ducts under the fire
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Old February 2nd, 2012, 10:02 PM
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Ogdens, does the 1/2" go just in the front ,or all of the way back to the end of the flues? Thanks for the help !
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Old February 2nd, 2012, 10:04 PM
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Are you filling the fire box as full as possible. Your not cooking a steak your running a freight train My oil burner doesn't boil the back 1/2 of my pan. As the rig gets hotter the fuel burns hotter and quicker did you give it enough time. Remember the syrup pans will boil different when the sugar content gets up to syrup.
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Old February 2nd, 2012, 10:08 PM
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Ideally you want to blow the air in the back of the fire box under the grates to force the heat/flame forward. If the blower is in the front blowing towards the stack you are just pushing the heat out of the stack.
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Old February 2nd, 2012, 10:11 PM
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Also give us a description of your arch. Such as insulated, block arch etc. What is the size is the space between your grates and syrup pan. How deep is the sap in your pans. Yeah I know we are asking alot of questions but we can better help you the more we know.
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