Hearthlist Digest #299 - Saturday, May 8, 1999 Re:ODS by "Skip Jackson" <[email protected]> Re: ODS by "Bill Kline" <[email protected]> RE: ODS by "Craig Issod" <[email protected]> Patio Grill Tables by "Craig Issod" <[email protected]>
(back) Subject: Re:ODS From: Skip Jackson <[email protected]> Date: Fri, 7 May 1999 23:47:32 -0400 Dear Craig, Lack of oxygen causes the flame to lift (ignition starts at a greater distance from the end of the jet) allowing the ODS to cool and shut the valve. Take the Hearth Education Gas Training Course. Skip Jackson Fireside Engineering Cincinnati
(back) Subject: Re: ODS From: "Bill Kline" <[email protected]> Date: Fri, 7 May 1999 23:47:33 -0400 Craig wrote: > I know the pilot becomes unstable and lifts off the thermocouple, but > exactly how? > > I'm sure the bimetallic element along the pilot tube body has something to > do with closing the mixing air off to the pilot, but am not sure > why...exactly how does a drop in room oxygen make this happen? I'm not too technical, but my simple brain understands that as the oxygen level in the air decreases, the SIZE of the flame reduces, and allows the thermocouple to cool too much to generate sufficient millivoltage to keep the valve open. The adjustment is critical to assure that when the flame is the size 18% oxygen allows it to be, it is far enough from the thermocouple to accomplish this, but not so far away that it goes out prematurely Bill Kline Chim Cheree Chimney Sweep Greer, SC Chimney Safety Institute of America Certified #257 Now in our Twenty Second year
(back) Subject: RE: ODS From: Craig Issod <[email protected]> Date: Fri, 7 May 1999 23:47:33 -0400 RE: Replies above..this is how I always understood it, sort of like a candle flame changes as you put a cup over it..cutting off the air... BUT, someone in the industry told me it was not exactly like that..and that the bimetal thingy on the side had something to do with it... I'll await more replies... ------------------------------------------------------ Craig Issod HearthNet at http://www.hearth.com [email protected] Everything your Hearth Desires ------------------------------------------------------ ------------------------------------------------------
(back) Subject: Patio Grill Tables From: Craig Issod <[email protected]> Date: Sat, 8 May 1999 13:05:41 -0400 My trainer showed me an ad for a Master Grill, made in MO. It;s a terra-cotta and tile round table that sits on a deck with a wood-fired grill in the middle. The 800 number does not answer and the web site is also kaput. I assume they are out-of-business. Which other companies make similar products? He doesn't care if he has to cut into the deck to mount it... Thanks in advance ------------------------------------------------------ Craig Issod HearthNet at http://www.hearth.com [email protected] Everything your Hearth Desires ------------------------------------------------------ ------------------------------------------------------