11
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.
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
HOT AIR DUCT FROM
OUTDOOR FURNACE
EXISTING DOWNDRAFT
FURNACE
8 INCH DIAMETER,
MINIMUM
8 INCH DIAMETER,
MINIMUM
8 " BACK DRAFT DAMPER
8" BACK DRAFT DAMPER
10" TO 8"
Y-TEE