10
H
OW DOES IT WORK
?
The fire chamber is completely immersed in a jacket of water (except for the front of the
furnace at the fill door and ash door). When a fire is built it heats the water and a pump takes
the hot water to the house. Inside the house you have some kind of heat transfer appliance;
this can be a heat exchanger that fits into your duct work, baseboard style heaters, or a
radiant floor heating system. The water can then be returned to the furnace for reheating.
The hot water from the furnace can also be sent to a special heat exchanger to heat your
domestic hot water or copper coils of some type may have been installed in your furnace
depending on what options you had ordered with your furnace.
I
NSTALLATION
It is important that you have the furnace installed by a qualified installer. Earth
Outdoor Wood Furnaces will not be held responsible for complications due to improper
installation and in some cases the warranty may be voided due to improper installation
and start up.
There can be many variations in proper installation. Here are some general guidelines to
follow.
Setting the Furnace
Depending on your application and site conditions, you may choose a pre-poured pad or you
may choose to pour a concrete pad. Pad size will depend on customer preference. It should
be no smaller than 4 foot by 5 foot. You may choose to pour a larger one based on your own
situation and preference.
Underground Line
When digging the trench, it is best to dig below the frost line. You will normally need two 1”
lines for the supply and return of the furnace water, one 1/2” line for the furnace fill line, and
an electrical line to power the furnace. Some installations may require more lines check with
a qualified installer or ask our customer service department to help.
Setting up the system
It is best if this system is set up in a continuous loop going from one appliance to another.
Parallel systems with tees will rarely work or will be inefficient in their movement of water.
There are a number of options and ideas on the set up of the whole furnace system. Consult
some one with experience to design a system that will work for you.
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