Simple Plumbing question

Posted by crhras on September 28, 2006, 11:04 am

Here's a real simple one...

New construction building where water supply to the entire house was shut
off at the main valve in the basement where water service enters the
building. Is there a need to turn off the gas, hot water tanks also ? The
tanks were full of water at the time water service was shut off.

Thanks,
Curt

Posted by AndyS on September 28, 2006, 6:04 pm

crhras wrote:

> Here's a real simple one...
> New construction building where water supply to the entire house was shut
> off at the main valve in the basement where water service enters the
> building. Is there a need to turn off the gas, hot water tanks also ? The
> tanks were full of water at the time water service was shut off.
> Thanks,
> Curt

Andy comments:
I think it is a bad idea to have any active energy source going to
a hot water heater , gas or electric, when the water supply is shut
off.

The most obvious is that leaks may occur and the water will be lost,
and the tank element, or heat channel, will burn up since there is no
coolant.

You can probably get away without energy shut-off, especially if it
is
only for a few minutes or a couple hours, but need to be aware of
the possibilities...

Andy

Posted by PPS on September 28, 2006, 6:06 pm

I feel the gas should be shut off. As there is no water to be used, there's
no need to continuously heat the water (that no one is going to use.)

> Here's a real simple one...
> New construction building where water supply to the entire house was shut
> off at the main valve in the basement where water service enters the
> building. Is there a need to turn off the gas, hot water tanks also ?
> The tanks were full of water at the time water service was shut off.
> Thanks,
> Curt
>

Posted by tbasc@bellsouth.net on September 28, 2006, 6:52 pm

crhras wrote:

Cutting off the gas seems a good safety measure if the water is to be
off for more than a few hours.
TB

Posted by Glenn on September 28, 2006, 7:49 pm

I always move the water heater down to pilot. That's after I once
heard one going "kerromp kerromp" sounding like it was boiling at
the top.

> crhras wrote:

> > Here's a real simple one...
> > New construction building where water supply to the
> > entire house was shut off at the main valve in the
> > basement where water service enters the building. Is
> > there a need to turn off the gas, hot water tanks also
> > ? The tanks were full of water at the time water
> > service was shut off.
> > Thanks,
> > Curt

> Cutting off the gas seems a good safety measure if the
> water is to be off for more than a few hours.
> TB

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