Installation and Instructions
13
Hearth Extension
An optional hearth extension may be used, but is
not required for these fireboxes.
A raised hearth extension may be used as shown
in Figure 10.
Install Optional Outside Air Kit
The VAK1 Outside Air Kit can be installed to bring
combustion air to the heated room air. The air drawn
into the heated room air from outside the home or
unheated area helps relieve the pressure in the home.
The duct termination should be located so it is
exposed to an out-of-doors opening of at least 100
square inches. If the duct termination must be located
in a crawl space or basement, be sure the termination
area has 100 square inches of ventilation opening to
outside air.
The duct termination must be located so it does
not compete for air flow with exhaust fans, gas vent
hoods or other air consuming devices or appliances. It
must not be obstructed by rafters, insulation materials
or other obstructions. The less restrictive the air
supply, the better the outside air kits will perform.
It is good practice to protect your hands and
eyes during installation by wearing work gloves and
safety glasses.
Do not install termination into a garage
or other area that could contain flammable liquids
or fumes, into a confined attic space or non
ventilated soffit .
Combustible Platform
Combustibles Allowed
(no carpet or vinyl)
Surround
1/2”
Seal with Non-Combustible Material
Hearth Brick
Hearth
Extension
Fig. 10
