Monessen Hearth DBX24C* User Manual

31 

1. 

STOP! Read the safety information .

2. 

Make sure the manual shutoff valve is fully open.

3. 

This heater is equipped with an ignition device (piezo) which automatically lights the pilot.

4. 

See Figure 44, page 29 for the location of the piezo ignitor and control knob. Turn control knob clockwise 

to the OFF position.

5. 

Wait 5 minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! 
Follow safety instructions under What To do if You Smell Gas, page 29. If you do not smell gas, go to the 
next step.

6. 

Turn the gas control knob counterclockwise 

 to the IGN position. See Figure 40. Push in and hold 

control knob for 5 seconds.

7. 

With the control knob pushed in and held, push and release the piezo ignitor button to light the ODS pilot. 
The pilot is located on the right side of the heater, behind the front log and in front of the burner. If piezo 
ignitor does not light the pilot, see Match Lighting Instructions, page 32.

8. 

Hold the control knob in for an additional 10 seconds to prevent the ODS pilot from shutting off the gas 
while the thermocouple is warming up.

9. 

Release the control knob. 

 

•   If the knob does not pop out when released, stop and immediately call your service technician or gas 

supplier.

 

•   If the ODS pilot will not stay lit after several tries, push and turn the control knob clockwise 

to OFF. Release and wait 15 seconds. Repeat steps 6 through 9.

10.  Turn control knob to any position between LOW and HIGH. The knob position controls the thermostat tem-

perature. See Figure 48.

11.  The heater is now in proper operation. The following procedure should be used to achieve thermostatic control 

of the desired room temperature.

a.   Operate unit at higher setting until desired room temperature is 

achieved.

b.   At the desired temperature, slowly turn the knob clockwise and 

stop rotating  when flame disappears.

c.   Thermostat is now set to maintain the current room tempera-

ture.

d.   As the room temperature decreases, the thermostat valve will 

open to ignite the front and rear  burner.

e.   When the temperature reaches its set point (knob position), the 

thermostat valve will again shut off the burner.

f.   This is the normal cycle of the heater.

Rotate

  1.  Turn control knob clockwise

 to OFF position to completely shut off the heater.

  2.  If applicable: Turn off all electric power to the heater.