Specifications

SCF-050 Manual

ure 14

the Furnace is put back in service, (Defective Room Fan, dirty Room Fan, dirty

Return Air Filter, defective Fan Limit Control or possibly a bad Control Board)

2. Proof of Fire switch also called the P.O.F. This senses the temperature rise in the

exhaust system. The switch is “Normally Open” and closes the circuit at 110

degrees. The Furnace will shut down if temperatures above 110 degrees F are not

sensed during start up or if the temperature drops below 110 degrees during

normal operation.

3. Vacuum switch also called the Negative pressure switch. When the Furnace is

turned on the Exhaust fan will create a negative pressure in the firebox. The

control board continually checks to see if Negative Pressure (vacuum) is present

during operation of the Furnace. If the exhaust venting system becomes clogged

or obstructed, the firebox door or ash pan door are left open or the exhaust fan

quits working the control board will go into “Safety shutdown”. There is a 60

second window to allow for cleaning the glass and removing the clinker before

then Furnace shuts down. This is sufficient for the Daily Maintenance

The SCF-050 has been Safety Tested by an accredited, independent laboratory.

Combustion Air Damper

Do not neglect to

adjust the

Combustion Air damper during the

break in period of your new Furnace

(See Figure 14 to the left). Your

Furnace is equipped with an air inlet

damper. The purpose of this damper

is to adjust combustion airflow to

match the characteristic of each

specific air inlet and chimney

configuration. The damper is preset

at the factory with a setscrew. The

damper will most likely only need a

small adjustment during the break in

period. To know if the damper needs

to be adjusted you should learn to

recognize how Corn, wheat or rye or

Pellets burn in this furnace system.