monoflo tee system

bryan_10

Can I remove all the cast iron convectors on a system and install copper fin-tube? Do I size fin-tube for load or do I need to worry about piping resistance? My plan is to supply and return the BB with the tees that are in place. Will it work?

Uni R

Why?

Why would you want to do this?

DIY Homeowner

?s

Cast iron tubular radiators, or cast iron baseboards?

You would be ill-advised to swap cast iron baseboards for fin-tube.

But if you are look to get rid of cast iron baseboards, I know where you can get rid of them, cheap. ;-)

bryan_10

someone

turned the thermostat off in the house and it was not check for over a week. Outside temps were -10 to -15. Froze and cracked all 16 A/S Sunrad convectors. I'm doing it because I have to, not because I want to. Will the BB work?

Mike Reavis_2

Is this a rental property?

bryan_10

unoccupied

Catholic Rectory. No full time priest, obviously no one checked on it through the holidays.

Steamhead

It will work if sized correctly

and if the Monoflo tees will divert enough water to feed the baseboards. You may run into trouble here because the usual fin-tube baseboard needs higher flow rates than cast-iron radiators do.

Several companies make cast-iron baseboard- this might be the way to go.

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bryan_10

in Midwest

finding new cast iron BB maybe tough to do. Thank you for the suggestion, I was not sure if we could get water through the BB or not. Do you know if there is a way to tell what the pressure drop through the tee or the rad needs to be? Will try to track down Cast BB in the Morning.

Steamhead

Maybe not so hard

Any Burnham, Slant/Fin or Weil-McLain dealer should be able to get it for you.

Get a copy of Dan's book "E.D.R.". It has rating charts for many old radiators and I believe your Sunrads are in it. Then you'll know how much heat each radiator is supposed to get. If the building has had insulation, storm windows etc. added, do a heat-loss on each room and size your new units from this. You might be able to use smaller units, or run with a lower water temperature.

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bryan_10

ratings

I have an American Standard ratings book that gives me the ratings for each section/radiator. I just replaced the boiler this fall with a Munchkin. Low temps are a good thing, but am concerned with water flow.

Wethead7

But no low temp with fin-tube. Fin-tibe likes higher temps than Cast iron. You may end up with losts more baseboard. Than old Rads.

Where in the mid-west are you.

Mike