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Types of inst
Types of inst
Types of inst
Types of inst
Types of installa
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allation
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Central Duct Connections
:
Installation should be done by a qualified professional. Maximum run
40’ - a duct run in excess of 40’ will greatly restrict the air flow / heat output and is not recommended.
When connecting the OS2200 to a central duct system, avoid 90 degree elbows - as with any furnace,
the more turns and branches in the ducting the less air flow delivery.
Run the 10” insulated flex hot air duct from the outside furnace through a window or wall of the house.
Attach the insulated flexible hot air duct to the central duct system of the home with a 45° elbow or
connecting the duct at an angle so the hot air from the OS2200 is delivered down stream. This will
insure proper air flow into the duct system. Avoid delivering the hot air through the air conditioning
coil as this will cause an obstruction reducing the amount of heat output. Do not reduce the size of the
hot air duct. As with any furnace, the greater run, turns and branches in the ducting the less air flow and
heat output delivered. Use of 90° elbows is not recommended.
The 12” cold air return duct must run to the house to prevent pressurization of the home - failure to
connect the cold air return will cause the furnace not to operate. Never reduce the size of the return,
doing so will restrict the hot air flow and put excess pressure on the blower motor. You may terminate
the cold air return where you enter the house - this will provide adequate circulation within the home.
See diagram below.
HOT AIR
COLD RETURN AIR
Connect Hot Air at an angle,
going downstream to duct
THE FLEX DUCTS MUST BE ENCLOSED AND NOT
EXPOSED TO THE ELEMENTS OR OUTDOORS.