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INSTALLATION
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#ABY R.2 October 2020
Recommended Location
• Above peak
Marginal Location
• Below peak
Recommended Location
• Above peak
• Inside heated space
Marginal Location
• Wind loading possible
Location NOT Recommended
• Too close to tree
• Below adjacent structure
• Lower roof line
• Avoid outside wall
Recommended
• Insulated exterior chase
Location NOT Recommended
• Not the highest point of the roof
• Wind loading possible
WIND DIRECTION
Figure 6.3, Wind Conditions and Chimney Location
6.4.1 Importance of Draft and Chimney Location
What is draft? Draft is the ability of the vent system to draw air
through the air intake pipe, through the appliance, and up the
exhaust vent pipe. A functioning exhaust system will pull the exhaust
and smoke up the vent pipe and out the termination cap. Inadequate
draft may result in excess smoke coming into the house.
A typical household will have appliances such as exhaust fans,
forced air furnaces, and clothing dryers that can create negative
pressure inside the house. When a household has negative pressure
and the fireplace door is opened, the negative pressure will pull the
combustion by-products (gas and smoke) into the house. An easy
way to alleviate negative pressure is to open up a window in the
room containing the fireplace.
The most common factors that cause a poor draft are air supply,
environmental conditions, cold chimney temperatures, poor chimney
installation and maintenance, and atmospheric pressure.
There can be environmental conditions that cause poor drafting, such
as trees, or other structures, around the house. Having a house in a
low-lying location (such as a valley), and with windy conditions, can
also cause poor drafting. Refer to Figure 6.3 below.
Excessively cold chimneys can cause poor draft. Starting a quick, hot
initial fire is important.
See Section 9.0 Fireplace Operation on page
36 for additional information.
Poor insulation in an exterior chase
can also cause excessively cold chimneys.
