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scooby333

02:15PM | 02/14/07
Member Since: 02/13/07
3 lifetime posts
Bvplumbing
I bought my house a few years ago and remodeled the third floor. I installed new baseboard heat on the third floor. I tapped into the pipe running to the second floor that comes out in my bathroom. The way I ran the piping was the pipe came out of the wall, went thru the baseboard heat, then went up to the third floor, thru another heater, then back down and continue thru the second floor then back down to the furnace. Well after I did all this I didn't receive heat on the second or third floor. So I removed the 3rd floor heat and hooked everything back the way it was. The problem is my pipes on the second floor are luke warm. It goes thru 1 bathroom and 3 bedrooms. By the time it gets to the 3rd bedroom, it's barely warm. The line returns back to the basement and the furnace. I have great heat on the first floor. The main pipe comes out of the furnace, runs about 10 feet then splits. The pipe going to the 1st floor has no problem staying hot, but about 5 feet after the split the pipe turns and goes to the second floor. It's hot to that point, but when it starts going to the second floor I can feel the pipe get luke warm. ANY ideas!!!!

Sylvan

07:31AM | 02/16/07
Member Since: 01/24/06
1331 lifetime posts
Me_office1
Same as before on post numbered 666

Depending on the type of heating you have cast iron radiators or CI base board or cheap copper fin type has a lot to do with the heating comfort and quality of the system

Copper fin and CI should never be mixed from the same piping zone as each gives off heat differently. Cast Iron holds the heat a lot longer then copper

There is only a certain amount of BTU's a pipe can deliver and on a loop system there is a lot of heat loss as the piping gives off heat because the ambient temperature starts taking heat from the piping as soon as it starts passing from room to room.

Boilers are sized by the amount of square footage to be heated and heat loss is taken into consideration, one can not just arbitrarily add a few more feet of radiation without serve consequences.

I install only two pipe (hydronic) systems as a loop is erratic when it comes to heating long runs.

There is another consideration one should take into account it is called the DELTA which is the temperature difference of the supply and return water.

If the return is to cold it can thermo shock the boiler and cause a premature failure as the cast iron sections can crack.

FYI if you have hot water or steam it is not a furnance


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