This is a vent free natural gas fireplace manufactured by SFC. Model#VF5CMN Man. Date 00 11 9 Serial#003776. It has a remote switch on wall. I tried it with the burner on low & high. The odor on "high" is more noticeable.The smell does not start until the burner has been on for a minute or 2. I thought that maybe during construction that they may have put the wrong type of insulation next to the firebox back in the wall & that this might be causing the smell. I could find no owners manual online & there was not one with the other manuals that came with townhouse> I did not see any place on this thing to "adjust" burner

I did not see any place on this thing to "adjust" burner

You probably will not see anything to adjust the burner but a professional will.

I think they are out of business but here is some info


Published Date: Sept. 5, 1997Company Name: Superior Fireplace Co.Address: 4325 Artesia Ave. Fullerton, CA 92833Main Telephone Number: 800/854-0257Internet Home Page Address (URL): www.superiorfireplace.comChief Executive Officer: Mike BriggsChief Financial Officer: John GurrolaInvestor Relations Contact: Claude Hayes Business number: 800/854-0257 ext. 264Public Relations Contact: JoAnna Lloyd Business number: 800/854-0257 ext. 268Industry: Building Products -- Fireplace Manufacturer

Dear dc55 in replay to your comment you posted in my reputation section I would like to thank you for the compliment you left as posted below.

((Of course it's accurate. This guy probably writes the trouble shooting guides for the manufacterers. They have the same , or similar answers. Noone can fix this but a "factory trained tech" & this training was only given to the trouble shooters that))

You are correct I have written a few trouble shooting guides for various manufactures. There are guides for service people and there are user guides for homeowners. There is a large separation or difference between the user and service guides and that reason is necessary to prevent the homeowner from killing themselves and others by incorrectly adjusting various settings on appliances especially gas non vented fireplaces like you have.

You were given all the information that I felt necessary to give a homeowner since you have absolutely no experience in repairs or common sense with the issue of your gas nonvented fireplace. These types of fireplaces kill people every year as listed in the national statistics for such items under CO poisoning and I thought you would understand that calling a professional was the safest option for you. The user guide for those units repeats the warnings and tells you to call a professional whenever you need your unit serviced. Professionals have the special tools required to work on your equipment to insure its safe operation and the future of your health while using the appliance. Call a professional you will be glad you did.

Here is the manual I found.

http://www.lennoxhearthproducts.com/resources/manual/903302%20K-VF5-CM-VF6-CM%20(II).pdf