On Oct 29, 10:13*am, Doug Freyburger wrote:
wrote:
Susan wrote:

... And will
leave the hot water dripping starting tomorrow in the downstairs
bathroom so I don't lose hot water by keeping the hw heater running
without shutting off, same as Irene.

What significant advantage is there to wasting hot water
going down the drain? * *A tank type hot water heater is
going to keep the water hot, close to it's target temp,
regardless of whether you draw water or not. * That idea
is like opening windows in winter so the furnace will run
to keep the house warm..... * *If you want to do something
to increase the amount of hot water that you'd have
available after the power goes off, then turn up the temp
on the water heater. * Also, if it's a basic gas water heater,
they run without power. * The power vented types or electric
ones obviously need power.

If the water heater has electric ignition, then a power failure can
switch it to pilot light mode.

Every appliance I have ever seen that has electronic ignition
did not have a pilot light. It would seem the whole point of
having electronic ignition is to avoid a pilot light. So, I can't
begin to imagine how the above could work.


*It depends on the exact technology in
the heater whether it depends on wall power.

For a tank type water heater the distinguishing factor
in all the units I've seen is whether they are a power
vent type or use a traditional flue. The power vent
ones need AC because they are power vented. The
ones that vent via flue rely on a pilot light, at least the
one's I've seen. I suppose there could be tank type
that are not power vented that have electronic ignition,
but I've never seen one.




The new one we had installed 5-6 years ago had a thermocouple to
power their thermostat and pizeroelectric effect to ignite so they
click. *That made the heater immune to power losses.

Of course it sat next to the sump that had an electric pump. *;^)- Hide quoted text -

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