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Keystoker – Schuylkill Haven, PA 17972
Koker, Koker Lite & Econo 90 Stoker Coal Stoves
© June 2019 REV 4
- 14 -
THERMOSTAT: Top pointer is to be set at warmth
desired in home. Bottom pointer is the present
temperature in room. When room temperature
(bottom pointer) falls below desired room
temperature, (top pointer), this will send a signal to
the Relay control to activate gear motor to push fresh
coal onto grate
FAN LIMIT SWITCH:
1. HIGH LIMIT POINTER-is a safety switch that
stops gear motor from pushing coal onto
grate at 200 degrees (If stove gets too hot,
this switch will turn off gear motor).
2. CENTER POINTER-turns convection blower
on when internal air temperature reaches this
setting (normally set around 160 degrees, but
is adjustable).
3. LOW POINTER-turns convection blower off
when internal air temperature falls to this
setting (normally set around 120 degrees, but
is adjustable).
4. Whatever number on silver dial is directly
above this point is temperature of internal air.
5. WHITE BUTTON-pull out for automatic
operation of convection blower. Push in for
constant running of convection blower.
6. On this application, the JUMPER PIN is left
intact
RELAY: Receives signal from 24V thermostat to turn on or turn off gear motor.
CONVECTION BLOWER: When running, it will take cool air from room, and force it
through heated air chamber inside stove, and return heated air into room. Blower can
only be activated by Fan Limit Switch.
Load
Fan
Line
Load
Fan
Line
Load
Limit
Line
Break Off
Jumper for
Low Voltage
4
5
1
2
3
FIGURE 8
FIGURE 9