Plumbing Questions? Ask a Plumbing Expert.
Hello. Give me just a minute to look up you heater.
Actually that unit came stock with a 180193-4
Anyways, yes you can, you can even go with a unitrol that has adjustable pilot. But to answer your question. Yes, it will be fine.
The A measurement is the shaft length, so 2.5 to 2 5/8 is fine
so the 'A' dimension being 1/8" longer and the reg setting of 4" rather than 3.5" is OK?
Yeah, the burner tray might sit 1/16 of an inch out, but you also have to understand, that length also depends on how tight the valve is scrweed in too.
The pilot tube and therocouple are soft tube
1/16 of an inch from where it previously was is what im meant to say
We are a warranty station for A.O Smith and have never had an issue replacing old gas valves with new ones
does that make sense regarding it being the problem. that is, pilot stays on until temp setting is set to high?
Yes, if its not turing off at the set temp, the therostat has failed.
What the part is called is a combination gas valve ( its the valve and t-stat) in one unit.
or are you saying that when you turn up the temp instead of heating the pilot just goes out.
when installing, can i use teflon tape or do i need plumber's paste?
teflon tape is fine, i believe they come with teflon tape already on them. I would also replace the thermocouple while you have it apart.
No, when i set the temp to high, the pilot and burner stays on but once the water reaches temp, then when burner shuts down, so does pilot. Pilot works fine when i lower temp to about med high.
Yeah, sounds like the t-stat is failing. When the heater is set to high the water temp should be absolutely scalding hot. 150+ deg. after a while they can go out of range.
Soundslike its thinking its too hot and turning off
i am using a valve from a friends relatively new water heater that had a tank problem leak. should i worry that the tank failed because the valve let the water get too hot/pressurized?
is the gas line flexible tube, like copper (supply connected to heater) or hard pipe. ? I wouldnt worry, if that water gets to hot, the T&P should open.
On your friends heater,
Generally, a bad gas valve wont cause a tank to fail
ok, then you will be fine, the reason i asked is the new gas valve isnt as wide as the old one so the gas connection is about a 1/2" away from where the old one was, with flexible tube, thats nothing, but with hard pipe it can be a pain
Oops, yah it is a hard pipe. Just measured, probably less than 1/4" difference.OK, thanks. XXXXX can get a few more years out of my unit. Can't afford new one now.
Good luck, you should be just fine
If you are satisfied with my answer, please hit accept. :)