Hot water radiator.


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Old 04-08-13, 04:31 PM
J
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Hot water radiator.

I am converting from steam to hot water. I am installing Slant Fin base board. There are two rooms that there is not enough room for base board. I am keeping two small radiators when purchased I was told they could be used for steam or hot water. All the diagrams I find on how to connect the hot water to it show the pipe going in the bottom and the return on the opposite side bottom. If I remember when I put them in (for steam) it was open from straight through. How will the hot water get to the top?
Thanks in advance.
 
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Old 04-08-13, 04:50 PM
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Heat rises. All my cast iron radiators are piped at the bottom only. You will need a valve like this at the top: Coin/Key Hot Water Air Valve-A957 at The Home Depot That will allow you to purge air from the radiator when you fill the system with water. If the radiator is full of air, it won't get hot.
 
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Old 04-08-13, 04:57 PM
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Heat rises.
Not really... technically speaking...

Heat RADIATES in every direction from hotter to cooler.

Hotter WATER will 'rise' to the top of a system because it is more buoyant and will 'float' up.

Heated AIR will also rise for much the same reason.

But HEAT does not rise.

Sorry for being so pedantic...
 
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Old 04-09-13, 04:28 PM
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Thanks for the reply's.
yes those are the type of valves I have throughout the system.
 
 

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