Just got a Kent 3 stage DI unit to add to my existing RO and was wondering where inline this should go. Inline before the incoming water supply to the RO or inline after the output of the RO or?
I believe it goes after the RO membrane. That is the way mine is set up, it goes through the sediment filter then through the carbon then through the membrane then through the DI and water comes out of the DI. HTH