I run hot PBW (20 min @ 120*F+) then cool water (5 min) through the pump to clean the CFC, MLT & BK. Without disassembling the pump. No problems in over 5 years.
So you're planning on a PID for your HLT. You're going to use this to set your strike temp, right?
And you're going to use the DSPR1 for your BK.
Review the manual for the device here: http://auberins.com/images/Manual/DSPR1%20manual_V1.pdf
A DSPR does not require a temperature probe, so the...
The amount of energy required for a given size volume of water does not change regardless of you using 1 240v element or 2 120v elements.
Using 2 120v elements is possible and folks do that reliably and safely. You need to ensure you are pulling from 2 different circuits (i.e. breakers) though...
How big are your batches and how much time are you willing to spend waiting for water and wort to come to temp?
Do a google search for "electricheat.xls". It's an Excel spreadsheet that will give you the time to temp for a given volume of water and heating element. It has several calculating...
I'm not an electrician, but I can read a schematic and have built 5 RIMS systems so I know how to use an SSR and PiDs. And I might have missed something, but regardless of how it's labeled or colored, the wire coming out of the label NEU on the SSR is wired as a neutral. It's a part of the lamp...
What you are proposing is simple enough to do. I switched from propane to electric for the same reason. Propane is expensive and I really did not like the amount of heat loss associated with using it. I use a RIMS and may convert to HERMS at some time in the future.
Your current rig looks...