Heating Help Forumshttp://www.heatinghelp.com/Forumen-ushttp://blogs.law.harvard.edu/tech/rssActiva FrameworkRE: Gas: SWEI: Balance mattershttp://www.heatinghelp.com/forum-thread/151099/Oversizing-hot-water-baseboard-for-efficiency#p1340010I can't re-emphasize enough what was just posted above.  When we get it right, we can tune the ODR curve to the point where there is almost no need for ...Tue, 29 Jul 2014 20:37:12 -0400RE: Strictly: vaporvac: My experience...http://www.heatinghelp.com/forum-thread/151085/Another-Steam-Boiler-Sizing-Concern#p1340009First off, I'm a home owner like yourself, but I spent over two years studying every iteration of boiler/burner combos before settling on my install. With the help of basically ...Tue, 29 Jul 2014 18:49:25 -0400RE: A-C: RobG: Copperhttp://www.heatinghelp.com/forum-thread/151098/Copper-fitting-friction-loss#p1340008I had to hook up an icemaker at my inlaws and went to the big orange store for some copper tubing. This stuff must have been type Z. I have ...Tue, 29 Jul 2014 17:02:05 -0400RE: A-C: Spence: AC Cyclehttp://www.heatinghelp.com/forum-thread/151091/increasing-length-of-AC-cycle#p1340007On the average, it takes 10-12 minutes for a properly sized air conditioner, components in good working order, to remove humidity and bring the space to the set temperature. The ...Tue, 29 Jul 2014 16:52:14 -0400RE: THE MAIN: RobG: Thermal Bypasshttp://www.heatinghelp.com/forum-thread/151100/Advice-on-adding-zones#p1340006You really need to install a bypass valve to protect you boiler from condensing. If your radiators are not getting hot, it probably means that the boiler is in condensing ...Tue, 29 Jul 2014 16:49:16 -0400RE: THE MAIN: Techman: Nitro.http://www.heatinghelp.com/forum-thread/151101/Brazing-without-nitrogen#p1340005For ACR that Nitro has to be "dry" or you will be adding wetness into the refrig system.Tue, 29 Jul 2014 16:29:05 -0400RE: THE MAIN: HoraceHeat: circulator flow rate?http://www.heatinghelp.com/forum-thread/151100/Advice-on-adding-zones#p1340004In terms of the heating load I think everything is well-sized currently. The boiler does not cycle too much and I like the fact that the radiators are always warm ...Tue, 29 Jul 2014 16:27:38 -0400RE: THE MAIN: RobG: I wasn'thttp://www.heatinghelp.com/forum-thread/151101/Brazing-without-nitrogen#p1340003I wasn't disagreeing with the nitrogen brazing issue (I don't do A/C except my own and only with the help of a friend who DOES do A/C). I do however ...Tue, 29 Jul 2014 16:26:06 -0400RE: A-C: Techman: Ice,ouch,http://www.heatinghelp.com/forum-thread/151098/Copper-fitting-friction-loss#p1340002you know how to hurt a guy. I use bending springs on/off all the time. They have a draw in my 4draw Solder/Braze tool box!!! Oh Man!  LOL!!!   For copper we ...Tue, 29 Jul 2014 16:16:44 -0400RE: Domestic: RobG: Agreehttp://www.heatinghelp.com/forum-thread/151093/r85-rannai-problem#p1340001I agree with everything that Jack said. The only thing that I would add is that allot of these units are sold as "instantaneous" water heaters. That is simply wrong. ...Tue, 29 Jul 2014 16:00:18 -0400RE: THE MAIN: ChrisJ: Costhttp://www.heatinghelp.com/forum-thread/151101/Brazing-without-nitrogen#p1340000I think it costs me $20 or $25 to have my 60cuft bottle filled. Seems fairly cheap to me.Tue, 29 Jul 2014 15:53:26 -0400RE: THE MAIN: Steamhead: Assuming those numbers are accuratehttp://www.heatinghelp.com/forum-thread/150969/I-can-not-get-my-head-around-the-over-sizing-of-boilers#p1339999even the smallest Buderus would be oversized. It has a Net rating of 74,000 BTU per hour: http://www.buderus.us/files/201111202222270.44499103-G115-Brochure-0711.pdf I found two better choices. These are 3-pass boilers like the Buderus: ...Tue, 29 Jul 2014 15:50:30 -0400RE: THE MAIN: Techman: Brazinghttp://www.heatinghelp.com/forum-thread/151101/Brazing-without-nitrogen#p1339998should be done using Nitrogen! You are right ChrisJ. Nitro is CHEAPER than FilterDriers, not using Nitro will eventually lead to a comp failure. Everywhere you see the oxidation marks ...Tue, 29 Jul 2014 15:45:00 -0400RE: THE MAIN: RobG: Costhttp://www.heatinghelp.com/forum-thread/151101/Brazing-without-nitrogen#p1339997Nitrogen costs more than O2. End of story. I guess that's why god invented filters. I have a friend who owns a bar and has a long draw beer tap ...Tue, 29 Jul 2014 15:05:24 -0400RE: Radiant: hot rod: I really likehttp://www.heatinghelp.com/forum-thread/151052/thread-sealant#p1339996this 3- Wrap tape from Mill Rose. You really do not need to add any dope with it. Great for rough threads, and comes off the roll better, to the ...Tue, 29 Jul 2014 14:57:52 -0400RE: THE MAIN: hot rod: how much?http://www.heatinghelp.com/forum-thread/151100/Advice-on-adding-zones#p1339995flow will you be trying to move. Assume you boiler runs 80% efficient, you have around 125,000 BTU available to move. A heat load calc would determine what the home ...Tue, 29 Jul 2014 14:48:18 -0400RE: Strictly: steamyjoe: Since it's incorrecthttp://www.heatinghelp.com/forum-thread/151097/Near-boiler-piping-issue#p1339994Could you tell me if I'm right on how it should be?Tue, 29 Jul 2014 14:41:09 -0400RE: Oil: RobG: It seemshttp://www.heatinghelp.com/forum-thread/151072/Time-for-a-new-oil-boiler#p1339993It seems like there are just too many ways for the water to go. You can't trust water, it will allways flow to the last place you want it to. I would ...Tue, 29 Jul 2014 14:39:14 -0400RE: THE MAIN: ChrisJ: Interestinghttp://www.heatinghelp.com/forum-thread/151101/Brazing-without-nitrogen#p1339992Bob, Thanks for responding. This is the kind of feedback I'm interested in hearing because I only do this for a hobby so I don't know what goes on in ...Tue, 29 Jul 2014 14:34:44 -0400RE: THE MAIN: bob: N2http://www.heatinghelp.com/forum-thread/151101/Brazing-without-nitrogen#p1339991Chris, from my 40 years experience working for a number of contractors I would say N2 is the exception rather than the rule . If you question the boss they ...Tue, 29 Jul 2014 14:29:32 -0400