carpet to come in contact with any part of the Crossfire insert. Maintain clearances to combustibles as specified in TABLE 1, page 24 of this manual.

OUTSIDE AIR COMBUSTION

It is imperative that the installer and homeowner ensures that a minimum of at least eight square inches (fifty square centimeters) of outside air be admitted to the hearth room or directly to the Crossfire. If installation allows, the Crossfire fresh air intake should be connected through an exterior wall.

Provision for outside combustion air may be necessary to ensure that fuel-burning appliances do not discharge byproducts of combustion into the house. Guidelines to determine the need for additional combustion air may not be adequate for every situation. If in doubt, it is advisable to provide outside air.

Outside combustion air may be required if:

1.The Crossfire does not draw steadily, smoke rollout occurs, fuel burns poorly, or back-drafts occur whether or not combustion is present.

2.Existing fuel-fired equipment in the house, such as fireplaces or other heating appliances smell, do not operate properly, suffer smoke rollout when opened, or back-draft occurs whether or not combustion is present.

3.The home is equipped with a well-sealed vapor barrier and tight fitting windows or has any powered devices that exhaust house air.

4.There is excessive condensation on home windows in the winter.

5.A ventilation system is installed in the house.

If any of these or other indicators suggests that infiltration air is inadequate, additional combustion air should be provided from the outdoors to the Crossfire appliance. Outside combustion air can be provided to the appliance by the following means:

1.Direct connection: appliances can only use direct connection of outside combustion air if they are certified for this type installation. Follow the Crossfire instructions for direct connection of outside combustion air.

2.Indirect connection: for appliances not certified for direct connection of outside combustion air, outside air can be ducted to within twelve inches of the appliance.

3.Mechanical ventilation: if the house has a ventilation system (air change or heat recovery):

a.The ventilation system may be able to provide sufficient combustion make-up air for the Crossfire appliance.

b.The homeowner should be informed that the ventilation system might need to be re- balanced by a ventilation technician after installation of the Crossfire stove.

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