This is how to light a natural gas powered indoor fireplace.

Step 1: Turn on the Gas Supply to the Fireplace

Step 2: Turn on the Fireplace

The switch on the side is a basic toggle switch. If it's off, the thermostat controls the fireplace. If it's on, the fireplace burner will just be "on" and there will be fire.

Step 3: Ignite the Pilot Light

This pilot has a piezoelectric starter, so you don't need to hold a flame next to the pilot to light it.

Turn the Off/Pilot/On knob to the Pilot position
Press and Hold the knob in
Click the piezoelectric igniter a few times until the pilot lights. You should hear a "whoosh" noise as it lights, and you should be able to see a little blue flame in the burner.
Hold the knob in for at least 30 seconds. The pilot needs to warm up or it'll die out right away.
Release the knob. If you release and the pilot dies, you released too soon. Start over and wait longer next time.

Step 4: Switch the Knob From "Pilot" to "On" Position

Go back to the knob for the Pilot light ignition. Turn the knob to the "On" position. When you do so, gas starts to flow through the main burner assembly. The pilot will light the gas and then the entire fireplace will be operational. Congratulations! Cozy gas fire achieved!

Step 5: Adjustments and Calibration

Burner Level: This controls the size of the fire. Use the "Hi-Lo" knob to increase/decrease the size of the fire. This adjustment is mostly cosmetic and doesn't change much except the amount of heat being generated by the fireplace.
Fan Blower: There is an electric fan blower knob control to the left of the gas valve. Turn it all the way to the right and you'll hear a fan whizz to life when the fireplace warms up, forcing warm air through the vents into the room.
Pilot Light: The fireplace gas valve with all the control knobs has a built-in safety mechanism. It measures heat from the pilot flame on the thermocouple, and if anything is even slightly off, the valve will snap closed and shut off the fire. There are two easy pilot adjustments that can be made.
- One is a tiny screw on the gas value; you can see it in the photo kind of next to the "Hi-Lo" flame adjustment knob. That little screw is the pilot Flame size.
- The other is physically taking off the glass and re-seating the pilot so that the flame is bathing the thermocouple as expected, and is not being blown out by drafts from the main burner