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Old 05-02-2012, 08:11 PM   #31
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Tankless Water Heater


ohm corsair what to say but feel the resistance
some get it and some don't

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Old 05-02-2012, 08:41 PM   #32
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hey thadsabb a.o.smith has a hybread that has both on demand with small water heater here is a link
http://www.hotwater.com/water-heater...xt-hybrid-gas/

and you guys still must not understand what the recurculating pump does for a on demand and if the you read the link and watched the video and still do not understand it i am not going to try here is another video for you

http://video.pbs.org/video/2195214406/

and the other thing the recurculater pump does is get rid of cold pockets and give you the instant hot water that most people think a tankless is
I'm not trying to be argumentative, but If you watched the video, you still have to WAIT for hot water.

It seems pretty simple to me that these videos are people who are trying to save water, because there is NO WAY that a recirculating pump can run 24/7 on a tankless water heater without a storage tank. NO WAY.
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Old 05-02-2012, 08:47 PM   #33
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I'm not trying to be argumentative, but If you watched the video, you still have to WAIT for hot water.

It seems pretty simple to me that these videos are people who are trying to save water, because there is NO WAY that a recirculating pump can run 24/7 on a tankless water heater without a storage tank. NO WAY.
Agreed..100%.. Without a storage tank there would be no hot water to recirculate, since there is no water actually RUNNING through the tankless coils.
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Old 05-02-2012, 08:52 PM   #34
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Agreed..100%.. Without a storage tank there would be no hot water to recirculate, since there is no water actually RUNNING through the tankless coils.
FURTHERMORE, if you hook it up this way without a demand switch and leave it running 24/7, guess what the flow sensor inside of your tankless water heater is going to tell the heating device to do?
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Old 05-02-2012, 08:54 PM   #35
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FURTHERMORE, if you hook it up this way without a demand switch and leave it running 24/7, guess what the flow sensor inside of your tankless water heater is going to tell the heating device to do?
Actually it should do nothing unless a tap is opened. But running it continuously would finally just circulate cold water.
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Old 05-02-2012, 08:57 PM   #36
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umm hello the pump is off untill you push button check this video out

http://video.pbs.org/video/2195214406/
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Old 05-02-2012, 09:03 PM   #37
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umm hello the pump is off untill you push button check this video out

http://video.pbs.org/video/2195214406/
Not sure what point you are making here. The recirculating pump won't do anything with a tankless water heater....no matter how long or short it runs.
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Old 05-02-2012, 09:03 PM   #38
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umm hello the pump is off untill you push button check this video out

http://video.pbs.org/video/2195214406/
That's what i'm saying. So you have to push a button. . . and wait for the cold water to purge out of the hot water line before you actually get hot.

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Old 05-02-2012, 09:05 PM   #39
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Actually it should do nothing unless a tap is opened. But running it continuously would finally just circulate cold water.


If you pipe it back into the cold supply like a normal water heater, and run a pump, the flow sensor will have the water heater on "heat mode" the entire time the pump is on, because there will always be water flowing through the heater.
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Old 05-02-2012, 09:21 PM   #40
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If you pipe it back into the cold supply like a normal water heater, and run a pump, the flow sensor will have the water heater on "heat mode" the entire time the pump is on, because there will always be water flowing through the heater.
Ahhh....got it
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Old 05-02-2012, 09:23 PM   #41
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I still have no idea why any residence would need or want a tankless water heater.
Why does anyone need a smart phone or iPad if you have a land line and a laptop
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Old 05-02-2012, 09:27 PM   #42
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Why does anyone need a smart phone or iPad if you have a land line and a laptop
Good question. Nobody NEEDS a smart phone or Ipad....not that that has anything to do with my question. Tankless water heaters are over rated.
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Old 05-02-2012, 09:30 PM   #43
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ok so what part of that does not make sense? and here is just one scenario
my bathroom is 80' of pipe away from tankless instead of turning on faucet and waiting a minute or so letting water run down drain until it gets hot. i walk into bath and motion sensor or manual switch turns on recirculating pump and creates flow switch on heater to turn on running hot water up to faucet and putting cold water back into cold supply "instead of down the drain" then when hot water hits faucet bypass sensor recirculating pump turns off. then i finish my paper work and like a good boy i wash my hands and what is this instant hot water wow no waiting over a minute that is amazing. so like a curios little guy i am i have to look under sink to see if they got one of those instant hot boxes that seem to only hold up a few years and make the meter spin so fast and nothing no little leaking box,but what do i see a little pump using under a watt of electric.

no saving the water umm not a big deal pennies down the drain,but instant hot water in a i want it now world priceless
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Old 05-02-2012, 09:32 PM   #44
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corsair in a month tell him how over rated they are by posting savings on gas and electric bill
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Old 05-02-2012, 09:36 PM   #45
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ok so what part of that does not make sense? and here is just one scenario
my bathroom is 80' of pipe away from tankless instead of turning on faucet and waiting a minute or so letting water run down drain until it gets hot. i walk into bath and motion sensor or manual switch turns on recirculating pump and creates flow switch on heater to turn on running hot water up to faucet and putting cold water back into cold supply "instead of down the drain" then when hot water hits faucet bypass sensor recirculating pump turns off. then i finish my paper work and like a good boy i wash my hands and what is this instant hot water wow no waiting over a minute that is amazing. so like a curios little guy i am i have to look under sink to see if they got one of those instant hot boxes that seem to only hold up a few years and make the meter spin so fast and nothing no little leaking box,but what do i see a little pump using under a watt of electric.

no saving the water umm not a big deal pennies down the drain,but instant hot water in a i want it now world priceless
...and you think that little pump is what is making the hot water?....and you think it's saving you money? When that little pump runs it tells the energy hog tankless to kick on, and that's much worse if it's electric rather than gas....and you still waited a minute for the water, just did something else while waiting.

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