17
FORGE OUTDOOR COAL FURNACE • OWNER'S MANUAL
3. Grasp the shaker grate handle and quickly shake the grates three to four
times to sift out some of the ash while not losing the hot coals through the
grates.
4. Using a shovel, add a single layer of anthracite over the glowing coals.
Make sure the layer of anthracite covers the entire grate area.
5. Close the firebox door. Wait long enough to allow the layer of anthracite
to catch fire.
6. Using the Firebox Door Opening procedure as needed, repeat steps 4
and 5 until there is approximately 2-3 inches of anthracite burning and
starting to glow (2 to 3 layers).
7. Add additional anthracite until the desired depth is achieved making sure
not to load higher than the bottom of the door sill frame.
8. Close and latch the firebox door.
9. After the water temperature is above 150˚F (66˚C), proceed to Adding
Heat Load.
NOTE: When burning anthracite, an even layer of coal must be maintained over the entire
coal bed or the fire will quickly die down.
NOTE: During initial start-up, a considerable amount of moisture from condensation will
collect inside the firebox and may drip out. This is normal and the moisture will evaporate
after the first couple of fuel loads.
NOTE: During initial start-up, it is normal for large amounts of smoke to be emitted from
the chimney as the water heats up. This is normal and smoke will be reduced once the
water around the firebox water jacket heats up.
NOTE: For regular reloading procedures, refer to the Loading Anthracite section.
Bituminous - Initial Loading
1. Rake the wood coals to even them out, covering the entire grate.
NOTE: For bituminous, it is not essential that the entire grate is covered in wood coals, but
is does help the combustion process.
2. Grasp the shaker grate handle and quickly shake the grates to drop ash
and allow for better airflow through the wood coals.
3. Add a few shovel scoops of nut-sized bituminous coal over the wood coals
in single layer. Add only enough bituminous to cover approximately half
of the wood coals.
NOTE: Although the outdoor furnace is designed to burn run of mine coal up to a certain
size, it is best to use nut-size bituminous when starting the initial fire to prevent smaller
pieces from slipping through the grate into the ash collection chamber.
