Sorry, couple more things:
Do I need an accumulator (red pressure tank) for the Navien? Currently mine is on the cold water inlet between the fill valve and the boiler so the pipes to it get quite warm, and is charged at 12psi and has a working pressure of up to 70psi. the fill valve is set...
First off, I am a multi certified trades-person in Canada (4 Red Seal) designations. Plumbing is NOT one of them, hence I am here to ask a couple questions to the knowledgeable plumbers on here.
I am removing my HW tank and Mini Super Hot boiler and replacing with a Navien CH240. I have 2...