The F2450 Wood Medium Stove is a residential wood-burning appliance designed for heating. It is capable of producing up to 75,000 BTUs from cordwood and has an EPA-certified emissions rate of 2.3 grams/hr. Its efficiency is rated at 73.3% (EPA HHV) and 78.4% (EPA LHV), making it eligible for the US Biomass Tax Rebate if the HHV value is greater than or equal to 75%. The stove uses a 6" (152mm) flue and can accommodate logs up to 18" (457mm) in length within its 2.3 cu.ft. firebox.
Unit Dimensions:
The stove has a width of 24" (610mm) and a depth of 21-1/4" (540mm) for the main body. The overall height from the floor to the top of the flue collar is approximately 27-1/8" (690mm), with the flue collar itself being 6-7/16" (163mm) high. The distance from the fuel door opening to the rear is 23-1/8" (587mm). The outside air connection measures 6-13/16" (173mm) in diameter and is located 4-9/16" (115mm) from the rear.
Clearances to Combustible Materials:
Minimum clearances to combustible materials are crucial for safe operation and vary depending on whether an airmate or rear heat deflector is installed.
- Residential Installation "C" Vent (Single Wall):
- With Airmate: 16" (406mm) from the side wall, 9.5" (241mm) from the rear, 8" (203mm) from the corner, 28" (711mm) from the flue center-line to the side, 16" (406mm) from the flue center-line to the rear, and 20" (508mm) from the flue center-line to the corner.
- With Rear Deflector: 16" (406mm) from the side wall, 11.5" (292mm) from the rear, 8" (203mm) from the corner, 28" (711mm) from the flue center-line to the side, 18" (457mm) from the flue center-line to the rear, and 20" (508mm) from the flue center-line to the corner.
- Residential Close Clearance (with required pipe components): This installation requires a listed double wall connector from the stove collar to the ceiling level.
- With Airmate: 15" (381mm) from the side wall, 8" (203mm) from the rear, 6" (152mm) from the corner, 27" (686mm) from the flue center-line to the side, 14.5" (368mm) from the flue center-line to the rear, and 18" (457mm) from the flue center-line to the corner.
- With Rear Deflector: 15" (381mm) from the side wall, 10" (254mm) from the rear, 6" (152mm) from the corner, 27" (686mm) from the flue center-line to the side, 16.5" (419mm) from the flue center-line to the rear, and 18" (457mm) from the flue center-line to the corner.
- Mobile Home Close Clearance (with required pipe components): "C" Vent single wall pipe is not approved for Mobile Home installations. Clearances are identical to Residential Close Clearance.
The minimum ceiling height for all installations is 83" (2108mm). Clearances can only be reduced by means approved by the regulatory authority.
Minimum Alcove Clearance:
The F2450 is approved for alcove installations with a minimum ceiling height of 83" and a maximum alcove depth of 48".
- Alcove Clearances (From Unit):
- With Airmate: 15" (381mm) from the side wall (G), 8" (203mm) from the rear (H).
- With Rear Deflector: 15" (381mm) from the side wall (G), 10" (254mm) from the rear (H).
- Alcove Clearances (From Flue Center-Line):
- With Airmate: 27" (686mm) to the side (I), 14.5" (368mm) to the rear (J).
- With Rear Deflector: 27" (686mm) to the side (I), 16.5" (419mm) to the rear (J).
- Alcove Clearances (From Wall): 54" (1372mm) (K) for both configurations.
Floor Protection (Ember Protection Only Required):
A non-combustible material (e.g., tile, concrete board, or UL-1618 Type 1 certified) is required for floor protection.
- Canada: The floor protector must extend at least 18" (457mm) on the fuel loading side and 8" (203mm) on the sides and back.
- USA: The floor protector must extend at least 16" (406mm) beyond the fuel loading side and ash removal opening, 8" (203mm) on the sides and back, and 2" (51mm) beyond each side under the chimney connector for horizontal applications.
- Minimum Overall Depth (Y) of Floor Protector:
- Canada: 49" (1245mm) from the fuel door opening to the edge of the hearth (A), 18" (457mm) hearth depth (B), 33-11/16" (856mm) hearth width (C), and 8" (203mm) from the fuel door opening (both sides) (D).
- USA: 47" (1194mm) from the fuel door opening to the edge of the hearth (A), 16" (406mm) hearth depth (B), 33-11/16" (856mm) hearth width (C), and 8" (203mm) from the fuel door opening (both sides) (D).
- Floor Protection for Corner Installation:
- A non-combustible floor protector is required, extending a minimum of 8" (203mm) from each side, 16" (406mm) from the front face of the stove, and 6" (152mm) from the rear (or the rear clearance to combustibles, whichever is smaller). In Canada, front protection must extend 18" (450mm) and rear 8" (203mm).
- Minimum Overall Width (X) of Floor Protector: 33-11/16" (856mm).
- Minimum Overall Depth (Y) of Floor Protector: Canada - 49" (1245mm), USA - 47" (1194mm). Rear protection (Z) is 6" (152mm).
- From Edge of Fuel Door Opening (W): 8" (203mm).
Mobile Home Installation:
Special requirements apply for mobile home installations:
- The stove must be permanently bolted to the floor using provided screws.
- A permanent outside air source for combustion is mandatory.
- The stove must be electrically grounded to the steel chassis of the mobile home.
- A listed double-wall connector chimney system, roof thimble, spark arrestor, and roof flashing kit suitable for mobile homes must be used.
- If the chimney exits the mobile home at 7ft (2130mm) or less above ground level, a guard or enclosure for the chimney up to 7ft (2130mm) is required.
- The chimney must attach directly to the room heater and extend at least 3ft (914mm) above the roof, and at least 2ft (610mm) above the highest elevation within 10ft (3048mm) of the chimney.
- The chimney system must comply with local requirements.
- Openings in a chimney guard must not permit the entrance of a 3/4" (19mm) diameter rod.
- The structural integrity of the mobile home roof, floor, walls, and ceiling must be maintained.
- Local building codes may apply.
- WARNING: DO NOT INSTALL IN A SLEEPING ROOM OF A MOBILE HOME.
- Silicone must be used to create an effective vapor barrier where the chimney or other components penetrate the exterior.
The mobile home kit includes a bottom metal cover, flex, collar, mobile home box, square transition box, and screws. Installation involves securing the unit to the floor, installing the mobile home box between the firebox and pedestal, and connecting the outside air kit. The outside air damper should be fully opened when starting a fire to prevent smoke from entering the room.
Chimney and Connector Installation:
The stove can be connected to a lined masonry chimney or a listed factory-built chimney (ULC629 in Canada or UL-103HT in the USA). It is crucial not to connect it to a chimney serving another appliance. The chimney connector must be 6" diameter, 24 MSG Black/Blue steel, and should be as short and direct as possible. Aluminum or galvanized steel connectors are not suitable. Joints must be tight and fastened with sheet metal screws.
WARNING: The chimney connector is for use only within the room, between the stove and ceiling/wall. Never use a chimney connector to pass through an attic, roof space, closet, or similar concealed space, or a floor or ceiling. An effective vapor barrier must be maintained where the chimney or component penetrates the exterior. Minimum clearances to combustibles must always be maintained.
For residential close clearance and alcove installations, a listed double wall connector from the stove collar to the ceiling level is required. Increasing chimney height can improve draft.
Combustible Wall Chimney Connector Pass-Throughs:
Several methods are provided for passing the chimney connector through a combustible wall while maintaining required clearances:
- Method A (12" [304.8 mm] Clearance): Construct a wall pass-through using a minimum 3.5" (89 mm) thick brick and a 5/8" (15.9 mm) minimum wall thickness clay liner. Maintain 12" (304.8 mm) of brick masonry between the clay liner and wall combustibles.
- Method B (9" [228.6 mm] Clearance): Build a wall pass-through with a 9" (228.6 mm) air space between the outer wall of a listed, factory-built Solid-Pak chimney section (with 1" [25.4 mm] insulation) and wall combustibles. Use sheet metal supports.
- Method C (6" [152.4 mm] Clearance): Construct a wall pass-through using a minimum 24 gage metal chimney connector and a 24 gage ventilated wall thimble with two 1" (25.4 mm) air channels. Maintain a 6" (152.4 mm) separation area with fiberglass insulation from the outer surface of the wall thimble to wall combustibles.
- Method D (2" [50.8 mm] Clearance): Use a solid-pak listed factory-built chimney section (at least 12" [304 mm] long, with 1" [25.4 mm] insulation, and an inside diameter 6" [152.4 mm] larger than the chimney connector) as a pass-through for a minimum 24-gage single wall steel chimney connector. Maintain 1" (25.4 mm) spacing between the solid-pak section and the chimney connector using sheet metal support plates.
Recommended Heights for Woodstove Flue:
The minimum flue height at sea level is 12' straight. Additional vertical height is required to compensate for elbows and horizontal runs:
- 45 deg. elbow: +1 ft.
- 90 deg. elbow: +2 ft.
- "T": +3 ft.
- Each foot of horizontal run: +2 ft.
An additional 4% overall height is added for every 1000' above sea level.
WARNING: DO NOT INSTALL IN SLEEPING ROOM.
CAUTION: The structural integrity of the mobile home floor, wall and ceiling/roof must be maintained.
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