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Posted by LarryC on November 8, 2007, 11:50 am
wrote:
> Freons right,
> The BTU's saved by not heating will show up on your bills.
> The power saved by reducing flow to the zone is nominal at best.
> Your circulator is a fraction of a HP to start with, unless you own one of
> the real big homes, in which case you'd be rich enough to not care...
> The shut off zone will reduce flow & add head pressure, the pump will ride
> the curve up & will work just as hard.
> The difference in power consumption will be minute...
>
> I'd take a good long look at the "won't freeze" idea &
> maybe put a freeze alarm in there, to avoid rupturing a pipe...
> (My attached garage w/2 warm walls gets well below freezing in the winter)
>
> goodluck
> geothermaljones
> stpaulmn
>
>
>
>
>
> > Ok, I've asked two of the local HVAC companies
> > in the area I'm moving into and gotten two
> > conflicting answers... So please be gentle
> > with me.
>
> > I'm moving into a house in Michigan which has
> > a natural gas fired baseboard hot water heating system.
>
> > It was built without much in the way of thought
> > regarding energy conservation. To put it mildly.
>
> > There are separate piping loops for various sections,
> > with levered shut-off valves on them. All are
> > currently open.
>
> > Anyway, I asked the HVAC folk if I could, say, shut
> > off the valves to the garage area and what this would
> > do in regards to the circulating pump.
>
> > (There's enough heat leakage that I don't have
> > to worry about the pipes freezing. At least
> > until I do a lot more retro-insulating).
>
> > One said it would make the pump work harder
> > and wear it out sooner; the other said it
> > would be ok and might even save a bit
> > of electrcity.
>
> > (In the long run I'll have them do proper
> > zoning and controls, and get a new higher
> > efficiency furnace, etc., etc., but all
> > that's got to wait until I find out the
> > truth behidn the Kennedy assasination.)
>
> > Seriously, for now I'm mostly concerned
> > about the pump issue, and given that I
> > got two different answers, I'm appealing
> > to the experts.
>
> > Thanks
>
> > --
> > _____________________________________________________
> > Knowledge may be power, but communications is the key
> > dan...@panix.com
> > [to foil spammers, my address has been double rot-13 encoded]- Hide quoted
text -
>
> - Show quoted text -
I agree with the last post; turning off a zone with a manual valve or
electric zone valve should impact the life of the pump in any
appreciable way. I'm thinking of the TACO pump in my mother's house;
it's worked flawlessly for almost 50 years, and I don't think they are
super expensive either way.
The guy who founded Taco, John Haven White, was a dedicated student of
pumps and fluids, and his company builds excellent products. He was
also a political activist, and his son, John Jr., continues the
tradition. http://www.lookoutri.com/pages/bio_new01.htm
The Taco (pronounced Tay-co) learning center provides excellent
details on pump system design -
http://www.taco-hvac.com/en/products/Design%20Tools/products.html?current_category=27
Good luck and get some insulation!
LC
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