Ashby-MF Insert
38
WARNING: The Insert has been Safety Tested by an accredited, independent laboratory.
These safety features are designed to protect life and property. Bypassing these features
voids all warranties and the safety listing of the Furnace.
“Power Reset”
- If the board becomes unresponsive for a long period of time, you must unplug
the Insert, wait 10 seconds and plug the unit back in to reset the board.
Safety Features
1.
”High Limit” switch”,
an overheat safety switch will shut off the fuel feed if the Insert
reaches temperatures above normal operating temperature. This is a “Normally Closed”
switch. If the High limit switch trips several times, the problem in the Insert
must
be
diagnosed before the unit is put back into service, (Defective Room Fan, dirty Room Fan,
defective High Limit switch or possibly a bad Control Board)
2.
Vacuum switch
also called the
Negative pressure switch
. When the Insert 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
Insert. If the exhaust venting system becomes clogged or obstructed, the firebox door is
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 before then unit
shuts down. This is sufficient for the Daily Maintenance
3.
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 Insert 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.
4.
Hopper Lid Switch.
The hopper lid switch will shut off the auger motor when the hopper lid is
open. Be sure the lid closes completely when refilling the hopper or the unit will shut down
