through the central furnace instead of going through the duct work. Split the hot air supply for the Fire Chief Furnace by using a “Y” and install one branch into each of the hot air ducts. Be sure both are pointing downstream. See diagram.
EXISTING DOWNDRAFT FURNACE
8" BACK DRAFT DAMPER
8 INCH DIAMETER, MINIMUM
10" TO 8" Y-TEE
HOT AIR DUCT FROM OUTDOOR FURNACE
8 INCH DIAMETER, MINIMUM
8 " BACK DRAFT DAMPER
NO DUCT WORK INSTALLATION CONNECTION: A qualified professional should do the installation. Cold air return must be installed in all cases, even those without ductwork. When there is no duct system to connect to the hot air flex duct, keep in mind: • You must separate the hot air duct from the cold air return. Ideally, locate each at opposite ends of the home. If you don’t, the air will not flow evenly throughout the home. This method will work well on homes built on concrete slabs and help create a good airflow. • In homes with a basement, you may run the hot air duct into the basement and pull the cold air return from the main floor, this will create a perfect air flow, since hot air rises. The cold air return must be connected, even if the home does not have ductwork. If you don’t connect the cold air return, the furnace will not be able to heat the home. See diagram.
HOT AIR
COLD AIR
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