| Author | Message | ||
| S Davidson (Sdh3)
Registered Member Username: Sdh3 Post Number: 7 Registered: 7-2006 Posted From: 66.82.9.73 Rating: N/A |
We have an exhaust pipe from our aqua hot, and another from our generator. We have them meeting up and running side by side up through the roof. At the roofline, to keep the exhaust from coming back, we had a plate cut to fit the pipes exactly and then large enough to cover the hole in the roof. From there, a 5" vertical exhaust pipe was welded to the plate. A flap was attached to that. Problem is, we have exhause smells in the bus. I suppose its possible it is coming through the plate holes, but it is a very tight fit. Is there a caulk or something that can withstand exhust heat that we could try there? We will take it in to see if someone can trace the leak, but thought there may be some ideas out there? I always appreciate the help. | ||
| Tom Caffrey (Pvcces)
Registered Member Username: Pvcces Post Number: 1015 Registered: 5-2001 Posted From: 65.74.65.54 Rating: N/A |
You ought to install a CO/propane detector if you don't already have one. The problem with smelling the exhaust is that you can't tell when the concentration is stong enough to endanger you. Be sure to get one that displays the concentration in PPM; it's the only way to get a handle on what you're dealing with. Good luck fixing your leak. Tom Caffrey PD4106-2576 Suncatcher Ketchikan, Alaska | ||
| Jack Conrad (Jackconrad)
Registered Member Username: Jackconrad Post Number: 500 Registered: 12-2000 Posted From: 207.30.189.28 Rating: N/A |
Check the temperature at the plate with a Laser Temperature Gun when the gewnerator and Aqua-Hot are both running. Then check with a store that sells fireplaces. As Tom mentioned, finding the source of the leak is absolutely neccesary. And make sure your CO detector is working. Jack | ||
| Paso One (Paso_1)
Registered Member Username: Paso_1 Post Number: 79 Registered: 11-2004 Posted From: 142.165.246.239 Rating: |
Is the flap you speak of similar to a rain cap ?? I don't think the aqua hot has enough push to open the cap. Is the smell only present when one is operating? Food for thought. | ||
| JJ Woden (Jj_woden)
Registered Member Username: Jj_woden Post Number: 4 Registered: 10-2006 Posted From: 65.19.246.49 Rating: N/A |
High Temp RTV silicone will withstand exhaust temperatures. Just do not use bathtub silicone. Get it from an auto parts store. The temperatures at the roof line will be much less than the working temperature of gasket silicone. And you can get it in a few different colors to suit your needs. | ||
| Tim Jones (Torquester)
Registered Member Username: Torquester Post Number: 96 Registered: 12-2000 Posted From: 205.169.164.69 Rating: N/A |
I'd suspect that a 5" exhaust flapper would create too much back pressure for your Aquahot system. It might be able to lift the flap but if those things have too much back pressure they will not burn the way that they should. Do you have an exhaust smell in the bay where the Aquahot is located too? Tq | ||
| S Davidson (Sdh3)
Registered Member Username: Sdh3 Post Number: 8 Registered: 7-2006 Posted From: 69.19.14.34 Rating: N/A |
Replies to above: We have a CO detector ordered and on the way. We are not living aboard, still converting, so we are just testing for now. Thanks for the sealant advice, I will check into that. The flap is acutally a 4" as the stack narrows, and it is like a tea-kettle flap. We were concerned about the agua hot exhaust also, and will check into suggestions further. It would be nice to eliminate the flap altogether,but dont want rain to get in. Any thoughts? The bay has a bit of a smell also. Thanks for the suggestions all | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 238 Registered: 11-2005 Posted From: 63.97.117.36 Rating: N/A |
Sd, You can remove some of the counterweight from the flap to make it open easier. I'm not sure how well a flap would work while the bus is underway. I would use a 90degree rear pointing elbow at the top of the exhaust or a "T" type cover which is probably the best of all. | ||
| christopher l cole sr. (Muziklvr)
Registered Member Username: Muziklvr Post Number: 57 Registered: 7-2006 Posted From: 68.119.227.51 Rating: N/A |
you can go to home depot,go to the hvac dept.look for red fire caulk.it is used as a fire barrier in both residential and commercial applications.you can apply with a standard caulk gun |
