SCOTTY SS DB-202A, Owner'S Manual

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SCOTTY SS – INSTRUCTION MANUAL
Scotty SS Nov-05 27
L4064R – Wood Furnace Fan/Limit Control – Fig. S202-2, 202-5
The L4064R fan and limit control is mounted in the plenum over the wood fired furnace.
It controls the operation of the oil furnace blower and shuts down the fire damper if the
circulating air temperature rises above a fixed upper limit. See Fig. S202-2 for location.
Adjustable Set Points
1.
“ON” is usually set to 140
?
F (60°C). It turns on the circulating blower when the
circulating air temperature reaches this temperature.
2.
“OFF” is usually set to 100°F (38°C). It turns off the circulating blower when the
circulating air temperature drops to this temperature.
3.
“Hi limit” is preset to 280°F (138°C). Will over ride room thermostat to both close
fire damper door and prevent oil furnace from starting if furnace overheats.
M847 – Damper Motor, See Fig. S202-2, S202-5
The damper motor should be located as shown in Fig. S202-2. The damper door lever
should be attached to the damper motor wheel with the included chain. Be sure that the
damper door is fully closed when the damper motor is “off” or not powered. Connect the
chain to the damper door lever and to the bottom hole in the damper motor wheel. As a
final adjustment bend the top chain link slightly to vary the damper position.
T822 – Room Thermostat – Wood Furnace – Fig. S202-5
This is located at or near the center of the house on the main floor or near an existing
thermostat. The thermostat operates the damper motor control to open and close the
damper door thus allowing more or less air into the wood furnace combustion area to
control the fire.
ALL ELECTRICAL WIRING MUST CONFORM TO NATIONAL AND LOCAL CODES.