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Heater Too Hot During Vacation?? - Page 2

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Posted by DJ on June 7, 2006, 7:50 pm

Thomas Flannigan wrote:

Well, if water use isn't an issue, here's an easy way to do it:
Turn your hot water heater thermostat down as low as possible (just to
make sure).
Go to the local hardware store and pick up one of those automatic lawn
watering timers.
There's likely a hose fitting at the bottom of your hot water tank. Put
a hose on that, through your new timer, and stick the outlet hose into
a basement drain. Let it run for, say, twenty minutes a day, best time
would be around noon.
That'd probably do it!


Posted by Mary Fisher on June 7, 2006, 8:12 pm

You obviously don't have a water shortage - or a water meter! And I realise
that you did begin with the caveat about water not being an issue.

It wouldn't do in most parts of UK :-(


Posted by DJ on June 8, 2006, 12:11 am
Mary Fisher wrote:

You're right; I've got a spring fed lake in the front yard ;-).

Well, I was thinking that a 20 minute run would roughly equate to
NORMAL daily household use of hot water... couple of showers, dish
washing, toilet flushed a few times, misc use. Probably even a bit low,
actually if you think about it.

After all, that's the only water use in the entire house that day.


Posted by Mary Fisher on June 8, 2006, 8:00 am

We're being urged to cut down even 'normal' use.

The Fisher household already uses minimal water, we have a meter and use far
less than the average for our household, we also re-use 'grey' water and
harvest rainwater from house, shed and greenhouse roofs (we grow our own
vegetables and never use mains water for them). But some customers are
profligate, still hosing cars (as if it mattered), insisting on showering
every day (only mucky people have showers!), leaving taps running while
brushing teeth, throwing away perfectly usable water then watering gardens
with fresh potable tap water etc.

Because it's illegal to cut off the water supply a large number of people, I
heard yesterday, don't bother to pay their bills even when they can easily
afford it.

Since we have a solar water heater I'm interested in this thread - except
that it's unlikely to affect us, we don't go away for more than a weekend
and that rarely!


Posted by DJ on June 8, 2006, 11:56 am
Mary Fisher wrote:

Yep, I'm running into some roadblocks on that one here in Canada.
National Plumbing Code prohibits non-potable water to be used in any
appliance, even a toilet! There are obviously some exceptions, but it
can be tricky.
And then comes the storage issue with the grey water. Had one client
that desperately wanted to save and sand-filter her washing machine
effluent. A little research, though, determined that that's not a great
idea due to contamination. What grey water do you reuse?

Apparently that's the best kind of "grey water" to use. Storage issues
are minimal, and no filtering required.

Yep. I am pretty lucky to have a lake in my front yard, actually. It's
only the electricity needed to pump it into my home that is of issue,
but that's taken care of with solar and wind.

Over here, though, they "remember". Sure, they can't cut off you water
or electricity mid-winter, but they can "get" you other ways.
Automobile registration is one soft spot many use. Owe fines or
utilities? Sorry, no licence for you!

The general professional answer to this (I'm also a licenced plumbing
contractor) is to install a "dump loop", whereas the heat goes into a
loop buried in the ground or in a pond when the glycol temperature
reaches a certain unsafe level. Just a matter of a thermostat and a
solenoid... and some piping, and some labor ;-).


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