Monessen Hearth BTU/Hr - Manual (Page 20)

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OPERATING INSTRUCTIONS
1. STOP! Read the safety information label.
2. Make sure the manual shutoff valve is fully open.
3. This gas log set is equipped with an ignition device (piezo) which automatically lights the pilot. If piezo
ignitor does not light the pilot, refer to instructions for “Match Lighting Instructions” , page 21.
4. Turn gas 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 the instructions under “What To Do if You Smell Gas,” page 17. If you don't smell gas, go to
next step.
6. From OFF position, turn the gas control knob counterclockwise to PILOT position. Push in control
knob for 5 seconds. See Figure 20. NOTE: If you are running the heater for the first time, it will be
necessary to press in the control knob for 30 seconds or longer to allow air to bleed out
of the gas piping.
7. With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached
to the front of burner. If needed, keep pressing ignitor button until pilot lights. Note: If pilot does not
stay lit, refer to “Troubleshooting,” pages 32 through 25. Also contact a qualified service
person or gas supplier for repairs. Until repairs are made, light pilot with match. To light
pilot with match, see “Match Lighting Instructions,” page 21.
8. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.
• If control knob does not pop up when released, contact a qualified service person or gas supplier for
repairs.
Note: If pilot goes out, repeat steps 4 through 8 . This heater has a safety interlock system. Wait
one (1) minute before lighting pilot again.
9. Turn control knob counterclockwise counterclockwise to desired heating level. The main
burner should light. Set control knob to any heat level between HI and LO. For thermostat operation, see
page 21.
LIGHTING INSTRUCTIONS
Do not try to adjust heating levels by
using the equipment shutoff valve.
W
ARNING
Figure 18 - Control Knob In The OFF Position
Figure 19 - Pilot
Thermocouple (LP only)
Pilot Burner
Ignitor Electrode
Control
Knob
Piezo
Ignitor
Thermocouple
(NG only)