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Cold water return for a hot water line Bob 07-20-2005
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Posted by Tekkie® on July 23, 2005, 8:24 pm


Bob posted for all of us...
I don't top post - see either inline or at bottom.

> This is my first visit to this group, so the question may be
> a repeat.
>
It is: so google it groups.google.com

You are welcome!
--

Tekkie


Electric Radiant Heat 468x60
Posted by C & M on July 26, 2005, 3:10 pm


Probably a dead thread, as fast as this group moves on, but nevertheless
I'll drop this one, Bob. A couple of years ago we were into a two year
drought and water restrictions were in effect, though you wouldn't know it
by the number of 'boobs' who washed their precious car on a weekly basis.
We placed a basin in our kitchen sink and a 5 gal bucket in the corner. The
pr-hot water was caught and ladled out for various light duty rinsings or
just washing our hands. After it was contaminated it was put into the 5 gal
bucket and used to flush. You have to use your head, of course and not have
a bunch of food and grease laying about becoming rancid and potentially
poisoning someone due to cross contamination. We cut our monthly useage
nearly in half. Of course, most of this was probably the miserly use of the
shower. We got ourselves wet, turned it off, scrubbed down and then rinsed
quickly. No more lazy, luxurious showers. Then the rains came and we were
back to our normally wasteful ways!

> This is my first visit to this group, so the question may be
> a repeat.
> I am thinking about installing a return pipe on my hot water
> feed to the kitchen to reduce the amount of cold water that
> is wasted before the hot water has reached the sink.
> Where is the best place to make the connection close to the
> hot water tank? It takes nearly four litres of cold water to
> run through the pipes before the hot water arrives. I have
> lots of pipe and connections left over from different
> projects and I might as well use them for this. My ceiling
> is easy to access. My problem is knowing where to connect
> near the tank.
> I have also read that some people have installed a "U" near
> the tank to reduce the loss of heat when hot water is not
> being drawn for use. Anyone have any details about this idea?
> Many thanks for your ideas.
>
> Bob




Posted by Rick on August 4, 2005, 2:19 pm


> > This is my first visit to this group, so the question may be
> > a repeat.
> > I am thinking about installing a return pipe on my hot water
> > feed to the kitchen to reduce the amount of cold water that
> > is wasted before the hot water has reached the sink.
> > Where is the best place to make the connection close to the
> > hot water tank? It takes nearly four litres of cold water to
> > run through the pipes before the hot water arrives. I have
> > lots of pipe and connections left over from different
> > projects and I might as well use them for this. My ceiling
> > is easy to access. My problem is knowing where to connect
> > near the tank.
> > I have also read that some people have installed a "U" near
> > the tank to reduce the loss of heat when hot water is not
> > being drawn for use. Anyone have any details about this idea?
> > Many thanks for your ideas.
> >
> > Bob

Grundfos (www.grundfos.com) has recently introduced a retrofit that
doesn't need a return line, but it's $$$. Essentially a small pump on
a timer at the hot water heater and a thermostatic valve installed
across the fixture supply lines...




Posted by on August 7, 2005, 11:15 am


Hot Water Savings

The key to hot water savings... eliminate the waiting.

Every second a person spends waiting for hot water at their faucet /
shower, your water heater is taking in "cold" city water. In addition
to the lighting energy used while the person stands there waiting. A
family of four waiting 1 minute for hot water spends around 97.3 hours
every year "waiting". (Four people waiting 4 times per day, 365 days
in a year, divided by 60 for total hrs) Include a lifestyle fudge
factor and reduce it to 72 hours of "very cold" city water filling up
your water heater needlessly. Let's pause for a moment and imagine
having to stand and watch a faucet waste water down the drain for 72
hrs. . . . Or consider a home which waits only 30 seconds.... that's
still 36 hours of watching water run down the drain.

Install a RedyTemp Hot Water Recirculator, no dedicated return line
required, idiot proof 10 minute "self-install".

Behind the timer is a standard 3-prong wall outlet. Simply replace
the timer with "The Clapper" set the clapper to the "away" mode. Now
when the clapper hear's someone in the bathroom it will auto start the
circulation process.

Or consider using the RedyTemp in the On-Demand mode using a wireless
push-button. Simply replace the timer with a "wireless outlet
control" similar to those used by the elderly when they don't want to
get up to turn on/off lamps. Press the wireless remote control from
anywhere in your house (range 100-150ft) for no-wait hot water
throughout your home.

Return on investment estimated at two years for a family of four which
waits an average of one minute for hot water.

Install a tankless water heater for "endless" hot water and a RedyTemp
for "no-wait" hot water.


>> > This is my first visit to this group, so the question may be
>> > a repeat.
>> > I am thinking about installing a return pipe on my hot water
>> > feed to the kitchen to reduce the amount of cold water that
>> > is wasted before the hot water has reached the sink.
>> > Where is the best place to make the connection close to the
>> > hot water tank? It takes nearly four litres of cold water to
>> > run through the pipes before the hot water arrives. I have
>> > lots of pipe and connections left over from different
>> > projects and I might as well use them for this. My ceiling
>> > is easy to access. My problem is knowing where to connect
>> > near the tank.
>> > I have also read that some people have installed a "U" near
>> > the tank to reduce the loss of heat when hot water is not
>> > being drawn for use. Anyone have any details about this idea?
>> > Many thanks for your ideas.
>> >
>> > Bob
>
>Grundfos (www.grundfos.com) has recently introduced a retrofit that
>doesn't need a return line, but it's $$$. Essentially a small pump on
>a timer at the hot water heater and a thermostatic valve installed
>across the fixture supply lines...
>



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