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Large Diameter Pipes in Hydronic Heating System

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Large Diameter Pipes in Hydronic Heating System oldhouse99 01-05-2007
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Posted by oldhouse99 on January 5, 2007, 1:26 pm
I've got some large pipes in the basement that are about 4-6" in
diameter. I think they were left over from a previous steam system but
am not sure. I'm trying to do different things to make the heating
system more efficient. I'm going to insulate these pipes...but before
I do I wanted to make sure there wasn't justification to replace them.
With what a plumber costs per hour I'm almost sure the answer is no,
but they are rather long runs of piping and I'm basically heating up
a good deal of "extra" water each time. Anyone else have any
experience with this? Thanks.


Posted by on January 5, 2007, 1:43 pm
wrote:

>I've got some large pipes in the basement that are about 4-6" in
>diameter. I think they were left over from a previous steam system but
>am not sure. I'm trying to do different things to make the heating
>system more efficient. I'm going to insulate these pipes...but before
>I do I wanted to make sure there wasn't justification to replace them.
>With what a plumber costs per hour I'm almost sure the answer is no,
>but they are rather long runs of piping and I'm basically heating up
>a good deal of "extra" water each time. Anyone else have any
>experience with this? Thanks.

        I have lots of experience with 4 - 6 " diameter pipes ( and
much larger ones ). Some held steam, some held hot water, some held
cold water, some held freon. Some were new, some were old. Knowing
the size of the pipe tells us exatly nothing.

        With that size pipe, the system is probably very old, possibly
steam, possibly gravity hot water. What you need is a pro to come in
and evaluate the condition of it, the efficiency of it, and discuss it
with you.


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Posted by -zero on January 5, 2007, 1:49 pm

> I've got some large pipes in the basement that are about 4-6" in
> diameter. I think they were left over from a previous steam system but
> am not sure. I'm trying to do different things to make the heating
> system more efficient. I'm going to insulate these pipes...but before
> I do I wanted to make sure there wasn't justification to replace them.

None to win over an argument. Most likely, It's just old piping from
when it was a gravity system.

> With what a plumber costs per hour I'm almost sure the answer is no,
> but they are rather long runs of piping and I'm basically heating up
> a good deal of "extra" water each time.

Then insulate them very, very well. Insulate your home
very, very well,,, as well.

-zero






Posted by Bubba on January 5, 2007, 5:19 pm
wrote:

>I've got some large pipes in the basement that are about 4-6" in
>diameter. I think they were left over from a previous steam system but
>am not sure. I'm trying to do different things to make the heating
>system more efficient. I'm going to insulate these pipes...but before
>I do I wanted to make sure there wasn't justification to replace them.
>With what a plumber costs per hour I'm almost sure the answer is no,
>but they are rather long runs of piping and I'm basically heating up
>a good deal of "extra" water each time. Anyone else have any
>experience with this? Thanks.

I would remove them all and install 1/2" copper pipes. It will hold
less water/steam and with a Pipe@Booster you will move it very fast
and efficient.
Install a new digital programmable stat too with new low voltage
wiring.
Bubba

Posted by daytona° on January 5, 2007, 10:03 pm
ACTUALLY ... the system should be visually looked at but a pro. Then the
determination can be made if it needs any changes at all.
-zero....hit it right on the head......it is an old gravity system that used
larger diameter pipes, because there were no pumps way back then. You do not
need any larger pumps either ... what comes with a new boiler is good
enough. You just moving water. Of course... a new High efficient boiler
would help in the gas usage.
And keep the terminology correct...either you have steam or you have water!
Insulating helps, but keep in mind that the heat from the pipes radiate heat
to the area where the pipes are

Just my $72.50 worth...send cash



> I've got some large pipes in the basement that are about 4-6" in
> diameter. I think they were left over from a previous steam system but
> am not sure. I'm trying to do different things to make the heating
> system more efficient. I'm going to insulate these pipes...but before
> I do I wanted to make sure there wasn't justification to replace them.
> With what a plumber costs per hour I'm almost sure the answer is no,
> but they are rather long runs of piping and I'm basically heating up
> a good deal of "extra" water each time. Anyone else have any
> experience with this? Thanks.
>



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