Hearth and Home Technologies C-40 - Manual (Page 45)

November 11, 2008 Heatilator • Constitution EPA Fireplace • 480-1091C Page 45
C. Outside Air
A source of air (oxygen) is required in order for combustion
to take place. Whatever air is consumed by the fire must be
replaced through cracks around windows, under doors, etc.
Most newly constructed houses or existing homes fitted with
tightly sealed doors and windows are relatively air tight. In
this case, an outside air source must be made available to
feed combustion air from outside the home.
The Constitution Fireplace comes equipped with an outside
air intake to feed combustion air from outside the home,
along with an outside air termination cap. The 6 in. (152 mm)
solid/flex pipe is not supplied.
Outside air is required to minimize the effects of negative
pressure within the structure. It is recommended to utilize
the shortest duct run to optimize the performance of the Out-
side Air flex tubing. The outside air inlet thimble should be
positioned above the ground level, and must remain clear
of leaves, debris, ice and/or snow. If you live in an area that
experiences deep snow levels, this must be taken into con-
sideration when determining the height placement above
ground level. It must be unrestricted while unit is in use to
prevent room air starvation which can cause smoke spillage
and an inability to maintain a fire. Smoke spillage can also
set off smoke alarms.
This fireplace will operate correctly only if adequate
ventilation is provided to allow proper draft to the fire-
place system. Hearth & Home Technologies assumes
no responsibility for the improper performance of the
fireplace system caused by inadequate draft due to
environmental conditions, down drafts, tight sealing
construction of the structure, or mechanical exhaust-
ing devices which create a negative air pressure
within the structure where the fireplace is located.
NOTE: OUTSIDE AIR IS REQUIRED.
An outside air control handle allows you control of the out-
side air inlet. This may be closed only when the fireplace is
not in use to prevent cold air infiltration. Use of outside air
for combustion is required to conserve heated air within the
structure and to provide make up air to keep the fireplace
venting properly.
See Figure 45.1, for location and operation.
CAUTION
Outside air control handle may be warm. Adjust before
lighting fire.
Figure 45.1 General Operating Parts
Outside Air Control
Handle
Automatic Combustion
Control Handle
Keep open during use.