Keystoker – Schuylkill Haven, PA 17972
Koker, Koker Lite & Econo 90 Stoker Coal Stoves
© June 2019 REV 4
- 9 -
Diagram 2 – Intermittent Heating
Depicts what fire size should look like when thermostat has not called for heat for
extended periods:
A.
Unburned fresh coal supply from hopper.
B.
Burning coal (about 1-1 ½” to 2”) (low flames).
C.
Ash on end of grate
A.
UNBURNED
COAL
B.
FIRE
C.
ASH
DIAGRAM 2
