2
OPERATING INSTRUCTIONS
How It Works
Your Bryan Furnace is an airtight, natural draft furnace located inside an insulat-
ed metal shelter. The blower, located on top of the furnace, pulls cold (return) air from the
building, passes it through the shelter where it picks up heat from the combustion cham-
ber, and forces the air back into the building through the hot (supply) air duct.
Combustion air for the fire is pulled through the damper box on the door into the com-
bustion chamber and exhaust gases leave through the flue on the top of the furnace. The
two air systems are sealed from each other and combustion gases will not normally be
released into the building (See Trouble Shooting).
Operation
Please keep in mind when operating any solid fuel heater that unlike a gas, oil, or
electric heater, the fire cannot simply be turned on or off to control building temperature.
Once a solid fuel fire is established, it must be allowed to burn to conclusion.
Firewood
The Bryan Furnace will burn any type of wood up to 12” in diameter and 30” in
length. Wood can be burned either with or without grates. Store your fuel in a dry, cov-
ered area with good ventilation. Do not stack wood against the building as this invites an
insect infestation. Do not store fuel within the furnace installation clearances or within the
space required for charging and ash removal.
Firewood varies greatly in quality due to species and moisture content. Wood that
is seasoned and dry greatly improves the efficiency of the furnace. Wood of over 20%
moisture will not burn well. Pine and some other softwoods burn very quickly with high cre-
osote production and very few coals. If pine must be burned, it should be burned with an
open damper in very small quantities. These woods are best used to start hardwood fires.
CHART ON AVAILABLE HEAT IN WOOD PER CORD
(Based on 20% Moisture In Wood)
TYPE
Hickory
Maple (Hard)
Beech
Oak (White)
Oak (Red)
Birch (Yellow)
Elm
Tamarack
Maple (Sot)
Cherry
Ash
Spruce
Hemlock
Pine(White)
Aspen
Basswood
AVERAGE WEIGHT PER CORD
3,595 Ibs.
3,075 Ibs.
3,240 Ibs.
3,750 Ibs.
3,240 Ibs.
3,000 Ibs.
2,750 Ibs.
2,500 Ibs.
2,500 Ibs.
2,550 Ibs.
2,950 Ibs.
2,100 Ibs.
2,100 Ibs.
1,800 Ibs.
1,900 Ibs.
1,900 Ibs.
APPROXIMATE BTU AVAILABLE
IN AN AIR-DRIED CORD OF WOOD
30,600,000
29,000,000
27,800,000
27,700,000
26,300,000
26,200,000
24,500,000
24,010,000
24,000,000
35,500,000
22,600,000
18,100,000
17,910,000
17,900,000
17,700,000
17,101,000
Summary of Contents for 300
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