At least you could quickly determine where all of the working circuits go, which may narrow it down some. Sometimes, a good visual inspection is all...
There is absolutely NO WAY I would even attempt to read through the above stuff, but my question is always, "How big is your 'first page' if EVERYONE...
FWIW, the tempering valve only adds cold to the outlet of the WH IF it is above what's left in the tank...IOW, if say the WH was set to 140, it would...
The first time someone (it's usually the young or old who have the thinnest skin and get the worst of it) comes out with second degree burns because...
Where I live, regardless of how hot you set your WH tank to, you are required to install a tempering valve. Now, they come preset to 120-(maybe 119)...
MACPLUMB 777
E-MAIL JERRYMAC@TROJANWORLDWIDE.COM
35 YEAR MASTER PLUMBER, HEATING, ELECTRIC, DRAINS, FIRE SPRINKLERS, WATER HEATER AND BOILERS SINCE JAN, 1989
281-706-1631 7 DYS A WEEK SALES AND TECH. SUPPORT
here's how i handle this...if a customer opts to buy any fixture or equipment through me, faucet, sink, toilet, water heater, etc., then I will handle any warranty issues and no charge for service if required on said item for 1 year. If they supply it themselves then I don't give them the same "service warranty". That is my gaurantee that I will stand behind "my products", always bought through plumbing wholesalers.