Can I install a Neorest on my existing plumbing? YES as long as you have a 12 Rough-in and your water supply is located approximately 11 off-center.
Does the Neorest work with a 10 or 14 rough-in? NO (not yet).
Do I need special plumbing/wiring to use the Neorest? NO the water supply connection is standard ½ inch, and the unit plugs into a standard 120 Volt AC (GFCI (fused)) outlet.
What is the required WATER PRESSURE? You need a MINIMUM of 20PSI. The MAXIMUM is 80PSI Use a minimum water supply pressure of 10PSI (0.07Mpa) flowing. (Warranty valid only if the water pressure is between 20 and 80 PSI).
I want to install a shelf above the toilet how much clearance should I have? Toto USA recommends at least 10 of clearance above the top of the Neorest. Note: that this may effect the remote controls placement in the bathroom.