now that you mention it, i didnt a purchase boiler yet, so i dont have a manual. i was thinking about a WM ultra and i havent installed any yet. a friend told me that it requires primary secondary piping. i just like to have a good diagram to go by . something general. i do like your quote cris, im a big believer in that. if only the homeowers around the world would realize that!!
Critical things if you want to avoid ANY potential issues in the future...
It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.