DH... you need to open hot water side of two handle faucet if you have one that is two handles on first floor (I remembered that other bath is fed by other water heater.;) ) and then drain water off at the drain on the water heater. Drain off 10 gallons or so... do not empty heater... no reason too. If no two handle faucets let me know.
And again, be sure power to heater is shut off at breaker. Keep us updated exactly as you are doing... :)
Kiss...you said it! I mentioned the stamped in letters in jacket. Hopefully they have it from here... *crossing fingers*
AND DH...did you confirm warm /hot water coming out of the cold side of your faucets before you began repiping heater..?? You really needed to confirm that before proceeding.
.