Propane Gas Logs
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Propane Kit Includes: Prices, Quotes and Ordering Information
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Letter From Rett
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From: "Rett Rasmussen" To: "'Jim Buckley'" Subject: Propane Gas Logs Date: Mon, 15 Oct 2001 Dear Jim: Last Thursday I (finally!) did some testing with the Rumford burner on Propane. It works. In order to get a sufficiently tall flame, I need to size the orifice much larger than we use on a standard horizontal gas log set. This will produce more carbon than a natural gas set, but all vented propane sets produce more than natural gas sets. As long as the chimney is exhausting all of the products of combustion, there is not a problem. The easiest means of removing carbon (soot), should the consumer feel that it has become excessive, is to burn the logs for a few minutes to get them hot, then spray the sooty area with water from spray bottle. The soot dislodges and is carried up the chimney. A propane set differs from a natural gas set in the means in which we try to aerate the propane to make it burn cleaner and due to the nature of propane. Specifically: 1) Requires an air mixer to mix "primary air" with the propane prior to combustion. This results in a noisier sound (throaty air sound) than the non-primary-aerated natural gas sand burners, but a cleaner flame than a straight propane feed into the burner. 2) Requires volcanic ash as a pan filler instead of sand. The volcanic ash is looser packed than sand, which allows more "secondary air" to be drawn into the flame, resulting in a cleaner flame than if sand were used.
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3) Requires a safety pilot kit (SPK3-TNA-LP: List $135.00. Similar in
appearance to that shown on your website). The reasons why a propane
gas log installation needs a safety pilot kit lies in the nature of
propane versus natural gas. Natural gas is lighter than air. In its
raw state (such as occurs in a leak or flame-out), natural gas safely
vents up the chimney into the atmosphere. Propane, however, is heavier
than air. In its raw state, propane sinks and pools at the floor. It
will continue pooling until it reaches a spark or flame, such as your
water heater, furnace pilot light or static electricity. Once it
reaches this ignition source...BOOM!!! A safety pilot kit shuts off the flow of gas to the burner in the event the pilot light blows out or if there is a flame out of the burner. No certification body, code agency, trade organization or manufacturer permits the use of a propane set without a safety pilot control. Many areas even require them on natural gas sets, although it is kind of a "belt and suspenders" approach. Your price is the same for propane sets and natural gas sets. Please add a suffix of "LP" to your model numbers when you desire LP. Plus you also need to order the "SPK3-TNA-LP" for the LP sets. Please contact me with any questions. Sincerely,
Rett Rasmussen
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