LP for gas stove

Corrugated pipe is generally intended only to be used as the last connection to an appliance, in a living space where it not vulnerable to banging or jostling (usually behind or in a space at the bottom of an appliance), but where it can be seen and accessed if work is being done. It is not intended to be buried in a wall, where it could be pierced by a random fastener driven blindly.

It is also only used where an appliance needs to be moved to connect or disconnect it to the supply line. In all other cases and places, solid black pipe should be used, not corrugated. Solid should be run to the connection right before the stove, a cutoff valve should be installed at that point before attaching a short length of corrugated between the stove and the valve.

Having said all this, I join in the various suggestions that you engage a professional plumber (pipefitter). I know how to do it, I have done it in the past, and I would NOT do it again. The risks are very high, and a simple oversight (common to many a DIYer) is disastrous. The pros avoid those oversights because of long practice.

Please stay safe.

I just did the same thing. I installed an Empire vent free log set in my wood burning fireplace that I plan to use mostly in a vented manner. I ran black pipe from the outside on my open air back porch into the fireplace which attached to the gas log burner controls.

For the outside, I simply attached a standard BBQ replacement propane hose with regulator to a 20lb tank. It works just fine. My log set is around 32000 btu so I can expect around 10.5-11 hours on a 20lb tank. I plan to get a 40lb tank.

One issue for you might be if your logs don't have the proper flame, it may be due to the hose used to connect to the tank being 1/4". Try to find a hose/regulator that is 3/8" which should provide a bit more gas to the logs.

Be aware that local code might require you to have a gas shutoff installed inside the house. Mine does, so I installed one.

One caution. Be sure to get a gas log set that does NOT have a continuous pilot light. A pilot light running 24/7 will use about 8 gallons of propane a month. That's 2 20lb tanks worth of propane.