Earth Bear Cub 305-FA Series, Owner'S Manual

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10
H
OW DOES IT WORK
?
With a fire in the firebox, a simple inexpensive thermostat in your house connected to the fan
control center. When your house temperature drops below the temperature set, the in-house
thermostat activates the front door fan and damper system, blowing air into your fire and
“firing it up”. When the heated air in the heat chamber reaches a certain level, the snap-disc
thermostat located on your out-going duct work activates your air chamber fan, and begins to
push the hot/warm air into your home. Note: Should you fail to refill your furnace some day
and the firebox temp goes down, the snap disc thermostat will deactivate the air chamber fan
so cool air will not enter your home.
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.
1. Basic Installation Directly Through the Wall: (see Diagram A)
Duct your out-going heat duct straight into your home through a window or a wall, as near the
center of your home as possible, and into your largest room (family, living, dining, etc.). Put a
register where the duct comes into your home. Now connect your return duct system to the
bottom left back where the 460 cfm fan is (see diagram B). Important! Bring your return duct
only from the furthest ends of your house away from where your incoming heat duct comes in
(see diagram C). This “draws” the hot/warm air throughout your home toward the return ducts,
then drawing the air through the ducts, back to the furnaces making the cycle again.
2. Installation Incorporating Existing Duct System: (see Diagram B & C)
Connect your out-going heat duct to your existing duct work. Connect your return duct to the
lower left fan box on the back. You are pushing hot air out, through your duct system, and
then back to the furnace in a cycle. Important! You need/must have all duct work, (in & back)
insulated or you will lose massive amounts of heat, and will not get the performance you need.
(Important! Depending on distance of your duct system, you may need a booster fan to assist
in moving the air through and back; or you may order a larger cfm fan for the back of your
furnace, for which there will be the difference in cost you will pay.)
3. Connect/Incorporate with Your Heat Pump System