Originally Posted by Flybob
This should have been covered under PDI, but you have come to the right place for answers when PDI doesn't cover it..
How do I fill the water heater?
With city water or water pump on ( not both) open bypass valve (Brass valve near top of water heater) until some water comes out.
How do I know it is filled? Water comes out
We have the Suburban SW12DE, that according to Suburban's manual runs on LP and 120V. How do I properly start using it?
Then turn on switch in lower left corner of your pic ( Circled) for 120V AC mode. For LP use switch inside RV
And where is the infamous anode and how do I replace, and with what part number?
Anode rod is just to the right of the black switch you have circled. Looks like a large NUT. 1 1/16" wrench required to remove. Available at almost any RV store
Can someone please explain what the 3 valves are (see pic) and the 2 switches and how they work in conjunction?
These are bypass valves for winterizing. The top and bottom one need to be parallel to the Pex tubing and the middle one needs to be perpendicular to the pex when in service mode. To winterize just move each one to the other position . The tank heater switch is for a pad that heats the water tank to prevent freezing. Nothing to do with water heater. Do not use water pump when on city water.
Sorry for all the questions, both CW walk-though "coordinator" and sales guy worthless...
PS I flushed the system, no water in fresh tank now, and hooked up to city. Propane is 3/4 and open, 30AMP connected...
Why is propane 3/4 open Should be open all the way or closed all the way.
FlyBob covers it pretty well. I run all hot water faucets to clear out all air. That avoids opening the pressure relief valve and getting water everywhere. Especially nice when it's cold out. Just GOT TO BE SURE THERE IS WATER IN THE WH, BEFORE YOU SWITCH ON THE 120 AC. IN AN EMPTY TANK THE ELECTRIC HEATING ELEMENT WILL FRY IN LESS THAN THE TIME IT TAKES TO REALIZE YOUR MISTAKE.
Also, I always keep water in the FW tank. At least some. It avoids any chance of running the pump dry. And always turns out to be handy.