Using an Outdoor Wood Burning Furnace
to heat a home with several different forced-air furnaces
OR using different types of heating systems together
You can use an outdoor wood burning furnace in a home, the has
several different furnaces on different levels or different areas. For
example, you might have a furnace in the attic to heat your top floor;
another in the basement the heat the bottom floor and even a different
one to heat in addition.
You can simply put heat exchanger in the plenum of each furnace. You
would run the piping for the heat exchangers in series.
In this scenario, you would likely run the outdoor furnace at 180°F
The first heat exchanger would yet 180°F water, while the second one
would like to be approximately 20° less, or 160°F, while a third one
would be approximately 140°F; plenty hot enough to heat up on.
In fact, all of our heat exchangers are rated at 140°F or better.
Doing it this way saves a lot of piping and running extra pumps,
which is unnecessary. You would normally run the first pipe from the
outdoor furnace to the area needing the most heat (in other words, the
largest square footage that you are heating). The last one in the run is
likely going to be for the smallest area or a place like a basement,
where you don't need much heat to begin with because it is already 55°
or better, being belowground.
You can do the same thing when you are using different types of
heating systems. a lot of people utilize a forced air furnace in
conjunction with a radiant system, for various reasons. Sometimes one or
the other has been added at a later point in time.
You would normally run the first line to the heat exchanger and a
plenum because that is where you will need the most heat. Normally a
radiant type of system in a floor will be 140° or less, so it is quite
fine for that be at the end of the line. a water to water heat
exchanger (sometimes also called a plate exchanger) is used between the
outdoor furnace and your radiant system is normally uses some type of
boiler. You will always need a tempering valve control the water
temperature going in the floor, so that the flooring material isn't
the same goes true when using at heat exchanger in a Plenum and a
SideArm heat exchanger on a hot water heater. We normally don't
recommend doing that because our built-in heat exchanger for your
domestic hot water works so much better.
This scenario the plumbing would first go to your heat exchanger in a
Plenum and then to your hot water heater (SideArm) because that only
needs 150°F at the most.