So I have sort of an odd problem. This house I was working on doesn't get hot water in the kitchen. The tankless is a Noritz N069-M. Every other fixture in the house, when the hot water draws, fires the heater. Yet the kitchen does not. I didn't install the heater, or any of the piping, I was just asked to take a look at the problem. I'm at a loss. The kitchen is about 40' from the heater, and the bathrooms are within 5'-10'.