hausdok Posted October 22, 2011 Report Share Posted October 22, 2011 Trying to remember. Think I recall seeing a discussion where someone discussed the requirement for a minimum 1ft height from the collar before the exhaust vent on a furnace or water heater is permitted to turn. Anyone recall that discussion or know what the code cite, if any, was? ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
Marc Posted October 22, 2011 Report Share Posted October 22, 2011 2006 IRC: G2427.6.1 (503.6.1) Installation, general. Gas vents shall be installed in accordance with the terms of their listings and the manufacturer's instructions. From the Duravent Installation Manual, page 5 8. Connector Rise. plan a minimum of one foot vertical connector rise coming out of each appliance Marc Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 22, 2011 Report Share Posted October 22, 2011 All of the venting tables require a 12" rise at the appliance. I hardly ever call it out because I hardly ever see it cause a problem. Quote Link to comment Share on other sites More sharing options...
davidmcg Posted October 22, 2011 Report Share Posted October 22, 2011 I have never saw a problem either. But I always defer back to the manufacturer. Codecheck Complete page 168 in Fig. 50 shows 2 feet just for your FYI. Click to Enlarge 50.71 KB Quote Link to comment Share on other sites More sharing options...
John Kogel Posted October 23, 2011 Report Share Posted October 23, 2011 I called this one for repair. I thought it looked like there's been backdrafting. A gas guy said it was fine. Click to Enlarge 40.8?KB Click to Enlarge 37.55?KB Correction - It is flame rollout. Thanks, Rob and Tim. Gas guy said it's ok. Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted October 23, 2011 Report Share Posted October 23, 2011 The double barrel arrestors are cool though [] Quote Link to comment Share on other sites More sharing options...
Brandon Whitmore Posted October 24, 2011 Report Share Posted October 24, 2011 Mike-- this was the discussion: rise Quote Link to comment Share on other sites More sharing options...
JEuriech Posted October 24, 2011 Report Share Posted October 24, 2011 Everything that I have seen so far makes reference to a minimum one foot connector rise for two or more appliances. I have not see anything related to one appliance all by itself. See Table G2428.3 (1) or G2428.3(2) in the 2006 IRC. Even DuraVent makes reference to "plan a minimum of one foot vertical connector rise coming out of each appliance" This would indicate to me two or more appliances. However, I have never seen a problem in my area either way. Jeff Euriech Peoria Arizona Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 24, 2011 Report Share Posted October 24, 2011 Everything that I have seen so far makes reference to a minimum one foot connector rise for two or more appliances. I have not see anything related to one appliance all by itself. See Table G2428.3 (1) or G2428.3(2) in the 2006 IRC. Even DuraVent makes reference to "plan a minimum of one foot vertical connector rise coming out of each appliance" This would indicate to me two or more appliances. However, I have never seen a problem in my area either way. Jeff Euriech Peoria Arizona Those are good points. I'd like to hear Bob Harper's response. Quote Link to comment Share on other sites More sharing options...
Rob Amaral Posted October 24, 2011 Report Share Posted October 24, 2011 There seems to be no backdrafting at the draft-hood... that scorching at the burner compartment area could be a case of flame roll-out? (Burner-related problem?) Quote Link to comment Share on other sites More sharing options...
Tim Maxwell Posted October 24, 2011 Report Share Posted October 24, 2011 There seems to be no backdrafting at the draft-hood... that scorching at the burner compartment area could be a case of flame roll-out? (Burner-related problem?) Or the inside burner compartment shield not in place. I see that one often because some are kind of difficult to get in place so they just lean it up or leave it off..... Quote Link to comment Share on other sites More sharing options...
kurt Posted October 24, 2011 Report Share Posted October 24, 2011 I think it's a "standards typo". It could say "any appliance", or "all appliances". It's not entirely clear, but I always thought it was indicating individual appliances. Quote Link to comment Share on other sites More sharing options...
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