Intake or combustion air can be supplied to the fireplace in one of two ways. Consult your local building code
or CAN/CSA-B365, Installation Code for Solid-Fuel-Burning Appliances and Equipment before proceeding.
1. Outside Air Supply: WARNING:
This must get its air from the outdoors and be finished with an approved
vent cap. The use of outside combustion air for residential installations requires that the fireplace be secured
to the structure to prevent dislodging of the air duct. Check local building codes for instructions on sealing the
vent cap at the penetration point of the building. The combustion air inlet ducts can not terminate in an attic
space or garage.
Installation:
Outside air may be drawn through either side or back of the unit by connecting 4"(102mm) rigid or flex pipe
onto the outside air adapter opening provided on the either side of the combustion air box. The fireplace
comes with the outside air adapter factory installed on the right side. You are able to switch this with the
cover plate on the left side if required (Figure 13). We recomend insulated flex when being installed in cold
climates.
Use an approved 4"(102mm) inlet vent cap. Cut or drill a corresponding hole in the closest exterior wall or
in the floor anywhere inside the chase. Cover the hole and install a 20GA wire mesh minimum, rodent screen
and staple/nail in place. Provide water protection as required by building code. Attach 4"(102mm) venting (not
supplied) between the units adapter and the inlet vent. A typical outside air connection is shown in Figure 14.
2. Room Air Supply -
The fireplace can draw its air from the room through a space between the surround
panels or through air inlet ducts placed near the floor in the chase.
CAUTION:
The living space around the heater must be well ventilated with good air circulation. Anything that
may cause a negative pressure can cause gases or fumes to be pulled into the living area. During extremely
cold weather, and especially when burning at very slow rates, the upper parts of the exposed chimney may
ice up, partially blocking the flue gases. If blockage occurs, flue gases may enter living space.
WARNING:
This unit is not designed to be operated with the firing door open. In addition to the obvious
hazard of sparks landing on combustibles, an open fire door will cause the heater to draw excess air from the
living space and possibly cause suffocation.
WARNING: THE COMBUSTION AIR INLET MUST BE AT LEAST 5ft (1.5m) BELOW CHIMNEY OUTLET
AND MUST NEVER TERMINATE IN ATTIC SPACES.
Combustion Air
Air Intake from
side or rear
OUTSIDE AIR ADAPTER
left or right mounting
Figure 13: FP25LE Air intake - rear view.
Figure 14: Typical outside air installation.
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FP25 LE 040523-36
100003890