piping size question

Tim_18

to hotrod, thank you for the quick reponse. the btu output of the Tarm boiler I purchased is 140,000 btu's. If I understand the plans for this setup, the water will heat my radiant floor first, is returned through the heat storage tank, back to the boiler. When the floor reaches the desired temperature, a valve shuts down the floor, then all heat is then stored in the tank. After the fire is out, the floor will then take its heat from the storage tank. They claim this is really not that complicated, but when it is not your line of work, it looks like rocket science when I read the owners manual. thanks burlman.

Tim_18

piping size question

I'm soon taking delivery of a new Tarm wood gasification boiler. It will be outdoors in a seperate building and I have to pipe the heat in 130feet to the house. It will go to the heat storage tank in the basement. All the fittings are 1'1/4 inches. I assume that the piping should be the same. My plumber says I can get away with using 1 inch pipe. It must feed 2 sets of 3/4 inch heat coils in the storage tank. I need to know for sure, we are ready to dig the trench for the pipe, and I must order the pipe. any help would be appreciated. See boiler etc. at "woodboilers.com"

hr

what' s the BTU output?

size the piping according to the amount of heat you will need to move. Wide delta T's help decrease pipe size also.

hot rod

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hr

That's the concept!

The multi temperature piping, along with buffer tank and boiler protection does get a bit involved. You may need a pro for this portion of the job. Here is a printout from the Hydronics Design Studio, showing 20 and 30 delta T.

Using copper pipe, with water, and a average temperature of 160F, 1-1/4 would be suggested. I'd be tempted to go with 1" as the FPS is not to awful far from comfort, for me.

Or check with Tarm about running a 30 degree delta t. Then you are safely in 1".

If you use pex, or antifreeze mix, things change! You may need 1-1/2"

Try www.hydronicpros.com There is a free demo there, of the Design Studio, and you can run some pipe size examples.m

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Einsiedler

antifreeze.

I'd recommend glycol ANYTIME lines are being trenched.

risk too great.

EIN