As a follow-up to my reply-post yesterday, I wanted to check the actual water temp during different flow rates.
Outside Air Temp: -5*F
Tankless HW Heater Inlet Cold Water Temp: 55*F
Tankless HW Heater output temp 125*F
(For this test the taps are wide open on hot only, with temp measured at the farthest tap from the HW Heater)
1 Tap : 120*F
2 Taps: 120*F
4 Taps: 110*F
6 Taps: 100*F
That's 3 Bathroom Sinks, Kitchen Sink, Bath Tub, and Stand Up Shower all running at the same time, wide open (don't have a way of measuring GPM, but the flow from all taps was greatly reduced with all 6 open)
Here is a link to the Specs
Navien-CR210 Specs
JP