Setting up Stack Pipes

My plumber installed an oil burner so I now have two heat sources. Last year I didn't have a working oil burner so the only heat I had was the coal furnance. What my plumber didn't do was hook up the stack for the coal furnace. I have attached a diagram of the way it is now and what I believe I need to do. Please look over my design and let me know if I am in the ballpark.

The solid fuel flue should always vent under the oil flue, using the same chimney. This prevents the blockage of the conventional appliance flue by ash build up and venting CO into the house.

I assume your plumber/heat guy would not hook it up because it is against code? Don't advertise your location for the ins. company or code enforcement officials. Or are things different in PA.?

Kevin

Doug,
Not sure what you mean by vent under the oil flue.

Klook,
With all the trouble I had with the coal furnace he feels I should forget about it.

I think Doug means that the fly ash will drop when it gets to the chimney flue and could enter the oil appliance flue and block it, causing poor draft for that unit. I think your drawing shows the pipes for both units connected and then going into the chimney. You have to keep close track of ash buildup if this is done. And the CO detectors are a must.

Kevin

I thought all states now had codes against putting 2 appliances on one flue. I have done it myself but it is against code here.
Or I should say it used to be done that way in my house, I have made it right.

I was of the impression that if I stalled one-way dampers that there would be no CO problem and the ash would go out the chimney.

Burnham Boiler's recommendations.

Is the Dealer's Venting Advice Correct?

Thanks coaledsweat

coaledsweat

In my drawing the chimney is directly behind the coal furnace. So there is no way for me to have the piping on and angle from the coal furnace. I can however have the piping from the oil burner on an angle. Is this ok?

Here is a write up from "Wood Heat Safety, by Jay W. Shelton, Copyright 1979. This may help clear things up for you.

KLook wrote:I assume your plumber/heat guy would not hook it up because it is against code? Don't advertise your location for the ins. company or code enforcement officials. Or are things different in PA.?

Kevin

That's correct! Use to be acceptable to have the two appliances (solid fuel/oil)in the same chimney flue. That has changed. Solid fuel appliance now has to have dedicated flue.

slabadie wrote:coaledsweat

In my drawing the chimney is directly behind the coal furnace. So there is no way for me to have the piping on and angle from the coal furnace. I can however have the piping from the oil burner on an angle. Is this ok?

I'm not sure what you are describing here. Can you install a separate thimble and install as DOUG suggested? I would not use the dampers you describe on a solid fuel device.