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Re: Piping okay?
Looks good, similar to the way many of us would do it. But which model Burnham is it?
Re: Since I am good at starting heated discussions
In my neck of the woods most wholesalers will sell to anyone. The only difference is that contractors get a discount and homeowners pay list. What allot of people don't understand is that by the time they research the problem, buy the tools, order the parts and live with an angry wife and kids for two or three days they could have called a quality contractor who keeps the parts and tools on his truck and actually saved money and aggravation.
Have you all noticed that the ones who don't **** about the bill are the blue collar workers who go into hock to pay it. It's the doctor and lawyers who get upset about what you charge.
Have you all noticed that the ones who don't **** about the bill are the blue collar workers who go into hock to pay it. It's the doctor and lawyers who get upset about what you charge.
RobG
5
Re: Does anyone actually pay?
Then get the supervisor on the line and give them both barrels. Threaten them with civil and criminal legal action. That's what it took to get them to stop calling us.
Re: Does anyone actually pay?
The BBB is the model for Angie's List, Service Magic, SuperMedia, Google , Yelp and others of their ilk with their dubious claims to bring you more business if you just pay 'em their Dane Geld.
"We never pay anyone Dane Geld.
No matter how trifling the cost.
For the end of that game,
Is bankruptcy and shame.
And the business that plays it is lost!"
"We never pay anyone Dane Geld.
No matter how trifling the cost.
For the end of that game,
Is bankruptcy and shame.
And the business that plays it is lost!"
6
Re: Does anyone actually pay?
I get at least one call of day from New Jersey from "Google" about keeping my business listing. I finally answered one and they wanted like $180 or so, so I declined. Where I live, no one is going to use Google to find me. Anyway, I still get the calls and I still have a Google listing. Never have paid it. Also,last year I answered about four different ones from around the country and got four different prices. Seems like a scam to me.
Rick
Rick
Re: Does anyone actually pay?
Angie's List is just as bad. Tell them you will take legal action unless they stop, including pressing telephone misuse charges.
Then if they don't shut up, DO IT!
Then if they don't shut up, DO IT!
Re: Properly Sizing Primary/Secondary Piping
http://www.tabbcertified.org/site/public/download/index/Documents/formulas/HydronicFormulas.pdf
https://us.v-cdn.net/5021738/uploads/FileUpload/33/1bff6e16d99b9b4523b58024eec077.jpg
https://us.v-cdn.net/5021738/uploads/FileUpload/33/1bff6e16d99b9b4523b58024eec077.jpg
Gordy
5
Re: Properly Sizing Primary/Secondary Piping
D T is the difference of output temperature versus return (input) temperatures. And no Gordy, it is not dependent on BTU but actual flow rates. 15000 BTU ar 20 DT is 1.5 GPM and 40K is 4 GPM. So I like to design my boilers to have a 25 DT. So 225,000 BTU is 18.5 GPM and 1 1/4 could do the job on the near boiler piping. 1 1/2 would be better on long runs as there is only .5 ft / 100 difference in head.Henry,
How can you dictate a delta with out even knowing the boiler being used, or emitters being used?
I was giving a simple answer to the OP for starters. No idea of his knowledge. And I did include that those btu carrying capacities are in the 2-4 FPS flow rate. this all works together last I knew based on the universal hydronic formula.
To the OP get to know the universal hydronic formula well. once you understand it this all comes together.
Gordy
5
Re: Properly Sizing Primary/Secondary Piping
With primary/secondary systems, you can usually work with temperature differences that are much greater than the standard 20 degrees. That can save you a lot of money on pipe- valve-, fittings- and circulator sizes. I wrote a book that explains all of this.
Re: Properly Sizing Primary/Secondary Piping
The proper way to size piping is by flow rate and not BTU. Get a Bell & Goddett System Syzer (it is free).
Here are a few sizes:
Iron pipe sizes
1/2 .8 to 2 GPM
3/4 2.7 to 4 GPM
1 3.3 to 8 GPM
1 1/4 7 to 17 GPM
1 1/2 11 to 26 GPM
2 20 to 50 GPM
2.5 32 to 80 PM
3 58 to 140 GPM
Never ever use the boiler connection size as the piping size! Don't use 35 or 40 F Delta T! The boilers that have Genonni type heat exchangers have very small passages like flat plate heat exchangers. The heat exchangers will block and fail. The past 3 years, we have replaced a number of installs by others that had insufficient pump and small piping.
Here are a few sizes:
Iron pipe sizes
1/2 .8 to 2 GPM
3/4 2.7 to 4 GPM
1 3.3 to 8 GPM
1 1/4 7 to 17 GPM
1 1/2 11 to 26 GPM
2 20 to 50 GPM
2.5 32 to 80 PM
3 58 to 140 GPM
Never ever use the boiler connection size as the piping size! Don't use 35 or 40 F Delta T! The boilers that have Genonni type heat exchangers have very small passages like flat plate heat exchangers. The heat exchangers will block and fail. The past 3 years, we have replaced a number of installs by others that had insufficient pump and small piping.
6
