the best way to piping baseboard water heating
You don't need more than one thermostatic valve per room.
You can actually put this anywhere in the room (where the pipes if more than one converge and then re-diverge) you choose provided there is just one heating feed pipe entering the room and one return pipe leaving the room.
Note: If the return pipe leaving one room becomes the feed pipe for the next room, etc. then there should be no more than one thermostatic valve in the entire loop.
There are a few systems where the feed pipe splits into a "passing lane" with no finned pipes to the next room and a "travel lane" that feeds the finned pipes in the baseboards. The two pipes reconverge just before entering the next room. Here each room can have a thermostatic valve in the "travel lane".
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Last edited by AllanJ; 01-31-2010 at 09:11 AM.