Tankless Heater GPM?
Depends on the tankless heater. Check itís specification for its range of flow rates necessary for proper functioning. 4.8 gpm is maximum rate for some rated minimum water temperature.
Lower flow rates are normal, but there is a minimum flow to get it to heating water.
I have a PrecisionTemp 500 series. The directions say turn on hot water to max, then add in cold water to adjust temperature. See what your user/install manual says about flow rates.
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.