keystoker boiler installation instructions

hello everybody i am new here and i was hoping somebody could me some advice on istalling a keystoker coal boiler. i have a 1200 square foot house in new hampshire and i am interested in installing a coal boiler in series with my excisting oil burner. right now i have a failly new pensotti boiler with a reillo burner. the unit has 3 heat zones and one zone for hot water which runs my boilermate. what i want to do is hook up the keystoker boiler in series with my oil burner so i can use all my excisting circulators and have it set up that if i do run out of coal the oil burner will take over. if somebody has done this set up and could shed some light on it for me that would be great. also some installation instuctions for a keystoker boil would be great too. if i had the instuctions i could probally figue ot the wiring but anny help would we greatly appricated

That is a simple install with perhaps no need to wire between boilers for automatic functions. There are a few ways to plumb it, give this thread a day or two and we can get some info posted for you.

Your going to love it.

Hello 1975, welcome to the forum.

Take a look at this thread: http://nepacrossroads.com/viewtopic.php?t=1952

It discusses several options for hooking up a boiler into an exsisting system. As I stated in the thread, I'd go with a series hookup, tie into the cold water return manifold, route this through the coal boiler. then from the hot outlet of the coal boiler into the original cold water return in the oil boiler.

This way the coal heats the return water, keeps the oil boiler above it's set point [you would want to lower the oil temp setpoint]. If the coal fire laggs behind in very cold weather or the coal fire goes out, then the oil burner kicks in to add heat to the system.

There may be some standby losses of heat from heating the oil boiler and piping, but if the boiler is in your basement this just adds heat to the house.

Hope this helps, Greg L

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If you want I can send you an older Keystoker boiler manual scanned to pdf. PM me if interested. They do not give any info as far as hookup with another boiler, only the old fashioned stand alone way circa 1950. Wiring is quite simple and the diagram is just a hand drawn schematic. Because I have an old boiler manual it does not include the newer second blower for the stoker but that is wired to be always on, not to hard to figure that out.

Good luck, let me know if you want a copy.