On 5 Jun 2006 18:54:27 -0700, "
wrote:


Steve B wrote:
"A. Pismo Clam" wrote in message
...
Hello All,

We've just moved in and I would like to drain the water heater. It was
installed in 2000, but the owner never drained it.

What is the safest way to do this without damaging the heater? Water on or
off? Pilot light on or off? Etc, etc...

Many thanks for taking the time to respond!

Alain

I would open up the popoff valve. It lets air in, thus letting the water go
out with more force, carrying more crud. I would turn the water on and off
SEVERAL times to flush as much stuff out as you can
Steve

WARNING WARNING!!!

Most drain valves are junk, espically the plastic ones, once opened it
may NEVER close You can buy a cap that fits with a washer to close
the drain when your done. be prepared to replaace the valve, like start
early AM of day off not end of day


Turn burner off leave pilot on.

messing with the T&P valve may cause it to leak.

your better off opening valves anywhere above the height of the tank to
assist draining by allowing airr to enter

I completely agree about the plastic valves. I'd buy a brass one in
advance. You can always return it. They are usually 3/4" pipe
thread. I think they should outlaw those plastic valves.

Mark