Yet Another Duct Coil Plumbing Question

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
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Stove/Furnace Make: EFM
Stove/Furnace Model: 520
Location: western ny

Post Wed. Sep. 05, 2007 11:26 pm

Does the supply pipe from the boiler go into the top of the duct coil or the bottom? It's a 3 row coil. The forced air blower fan will blow air upwards through the coil. I have seen it recommended both ways (and both ways were stated as the only way!) from the outdoor wood boiler websites. hmm.

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Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea
Location: Guilford, Connecticut

Post Thu. Sep. 06, 2007 7:44 am

Normally when running heat exchangers the two flows oppose each other. If your cool air is coming up from the bottom, your hot water would come down from the top.
However with the 3 tube coil you have laying down, it shouldn't make much difference.

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