Keystoker 90/105 Chimney Owners Cold Air Return

A Coal stoker furnace or stove controls most operations including automatically feeding the coal. They are quite similar to any conventional oil and gas units and easily operated for extended periods of time. They commonly use rice coal but may use larger sizes like buckwheat. They can be used as primary heat, supplementary heat or have a dual set up with your existing oil/gas furnace.
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Posts: 930
Joined: Tue. Jul. 22, 2008 11:52 am
Stove/Furnace Make: Keystoker Koker
Stove/Furnace Model: Koker 160
Location: Near Coal Country, PA

Post Wed. Jul. 30, 2008 12:58 pm

I want to connect my new keystoker 105 to my duckwork as well as to my furnaces cold air return. I am told I would need to build something to connect it to the keystoker intake. Has anyone done this? Can you please post a few photos of how you have connected to the cold air intake, specifically right at the stove itself?

I want to start building this so I am ready for the unit. Thank you!

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Posts: 5
Joined: Wed. Jul. 30, 2008 8:40 pm
Stove/Furnace Make: keystoker
Stove/Furnace Model: 105000 BTU

Post Thu. Jul. 31, 2008 4:31 pm

I got a 105000 BTU unit and it came with a small filter apparatus to hook up to the intake of the blower fan. What I did was go to a heating and supply place in town here and matched up a 6X8 inch take off which would normally go into the box on my supply line to start a register run. I used the small frame that holds the filter and secured it to the side of the blower intake. Then I hooked up the elbow to the frame. I used some scrap metal and zip screws to fasten it all together than I ran 8 inch pipe to the filter box that I also made from scrap leftovers. On the other side I hooked it into my 12 inch return line. The intake on my blower fan was only 7 1/2 inches so the 8 inch feed line is more than enough. I wanted to use a full size filter and the home made box works pretty well for that and it is easy to replace the filter. The only thing you may find different is that I bought a unti with a 800 cfm blower fan so you'll have to adapt the size accordingly. I also used black tape for a temp fix to any sharp edges I left. I plan on replacing it with metal tape as soon as I pick some up.

furnace intake 2.JPG

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Posts: 5849
Joined: Mon. Nov. 14, 2005 8:40 am
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon
Location: Cuba, NY

Post Thu. Jul. 31, 2008 6:30 pm

I just used a piece of pipe about the size of the intake, cut some tabs, bent them out, and attached it to the screws on the housing...

Cold Air Return From Existing Run
- Dave
Hyfire I & Keystoker 90K heating an 1890 Victorian
- Amsoil Authorized T1 Certified Dealer

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