17
Coal Burning
Do not burn coal on the wood grate. An optional coal grate kit
is available for the Oval (#1500) and the SweetHeart (#4500) to
burn coal. An installation and operating manual is packed with
every Oval and Sweetheart Coal Kit. Extra copies may be
obtained from your dealer or by contacting Heartland Appliances
Inc. Below is a brief description of the coal kit installation
Sweetheart Coal Grate Installation
To install the optional coal grates, remove the lift handle, the
key plate and lids. Lift the wood grate out through the top of the
firebox and replace it with the coal grate. Remove small front
brick in firebox by unscrewing bolt & nut that holds brick in
place. (Please note that older models require front fire brick to
be installed with the groove facing away from the firebox and
towards the front of the stove).Replace with large brick in coal
kit. Gently tap the coal grate down until it fits snugly into the
steel track. Replace the key plate, lift handle and lids. Then
proceed with firedoor damper installation.
Oval Coal Grate Installation
To install the optional coal grate package, remove the wood
grate through the ash pan door and replace with the coal grate.
Remove the key plate over the firebox and slide the coal liners
#1470 in the front and #1475 in the back of the firebox.Replace
the key plate, lift handle and lids. Then proceed with firedoor
damper installation.
Oval and Sweetheart Firedoor Damper
(Coal burning only, see illustration on next column)
The firedoor damper comes with each coal kit and must be
installed. Remove the nickel firedoor frame from the firedoor.
Loosen the three screws that hold the cover plate over the
damper holes. Replace the cover plate with the coal damper,
lettered side out. Tighten screws just enough to hold the
damper plate on but also allow it to slide freely back and forth.
Lock screws in position with a nut on each screw thread.
A wood “break in” fire should be done before attempting
to burn coal (see page 13).
C
O
Illustration
showing Oval
firedoor damper
installation
Starting Up a Coal Fire
A chimney 6" in diameters is imperative for the Coal Burning
process. On chimney larger than 6" in diameters will cause
poor ignition of the coal due to inadequate draft.
It is possible to burn coal with a large diameter chimney , but
banking a new bed of coals will require a greater mix of wood
to create and maintain an adequate draft.
The minimum draft required to maintain an oven temperature
of 350 ºf is around .04" on a water column. For drafts under .04"
on a water column, closing the oven draft damper more than
half way, will cause back puffing.
During the recharge phase of a new bank, a draft of .08" should
be maintained for at least 10-15 minutes or until a substantial
bed of red embers is built up.
We recommend burning anthracite coal, which is relatively
clean to handle, burns evenly with a low flame, has a low
sulphur content and produces relatively little smoke.
Use a “chess nut” or “nut” size of coal, which is 1 3/16 to 1 5/
8 in diameter. However, other coal, such as bitumious, can be
burned, but is inferior to anthracite.
To Start a Coal Fire:
1. Use paper and dry wood kindling to start the fire.
2. Add small, compact pieces of hardwood when the kindling
is burning hot. Keep the primary damper controls fully
open to establish a hot fire quickly.
