So here's the problem I'm trying to solve. The tankless water heater we had installed requires a certain amount of flow to turn on, I think about .5 gal/min. However, the stupid CA low flow faucet we installed doesn't flow enough water to kick on the water heater. So our new master bath shower and tub have hot water, but the sink does not. I'm trying to modify the water heater to turn on with slightly less flow, before replacing the faucet with a higher flow model. It seems to be a 3 wire hall effect water flow sensor and it must be powered by the two C batteries next to the controller in series (3V). I tried purchasing a different one on amazon to see if it would have any effect on how soon it turns on, but it seems to be about the same, and after searching a lot, it seems the common range for these sensors for a water heater is 1-30l or 2-60l. I purchased a 1-30l sensor and it looks very similar to the one in the water heater. The sensors that are in the .3-10l range I assume would spin faster with the flow in this situtaion and maybe have higher pulse frequency, but don't handle high enough pressure to be reliable for this situation. So I'm pretty new to this stuff, but not a total dummy, it seems like the controller for the water heater is looking for a certain pules frequency before it turns on, so I was thinking if I could wire in a simple frequency doubler, it would turn on with half as much flow. Does that make sense? Is that a simple thing to build that you guys could give me the info on how to build one, parts needed, etc. I can solder and wire in something if you tell me how to build the circuit.
let me know your thoughts, thanks for reading.
Jesse
let me know your thoughts, thanks for reading.
Jesse