Any plumbers out there? Floor heat questions.

[calvinater]

Looking to put a 50,000 btu propane boiler in the shop.
5 300 ft loops
One zone
Closed loop , no continuos water supply

Planning a 50/50 water glycol mix.

Questions:
Where can one find a schematic of the piping and wiring for such a system?

What would be your choice for a heating plant?

Which type/ brand of antifreeze?

Taco circ pump?

Thanks for any advice or links.
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[calvinater]

Bump


Anyone?
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[Abscate]

Read but way out of my expertise area.

Do you need a clock accurate to within one second of the life of the universe?
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[oprn]

First off, I am not a plumber. I have asked several plumbers these same questions and have yet to get any satisfactory answers. It seems there are very few people these days that understand that style of heating. I am heating both the house and the garage (separate buildings) this way with one 80,000 BTU high efficiency boiler. I was told the boiler would be adequate but it is not. My previous low efficiency boiler was 120,000 BTUs and it handled it fine. Now anything below about -25*C outside the boiler runs flat out and struggles to maintain 18*C in the house and 5*C in the garage. My saving grace is that I have a wood and coal stove in the basement.

There are so many variables in the equation that makes an answer to your question difficult. Building area, insulation quantity and quality, window and door quality, normal winter temperatures, expected winter storm extremes are some of them.

I am running an NTI boiler which has a circulating pump built in. I put another pump in the garage to assist that one due to the 75 foot underground lines between the buildings but to my surprise it was not needed.

Yes I am running 50/50 glycol mix. I don't know what brand name or chemical composition but it is considered "food safe" whatever that means...

Oh! And I might add that the boiler handles the domestic hot water too as did the old one.

Standard double car garage package and 900 sq/ft 1945 era home.

Hope that is of some help.
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