Hello, I am new to this forum and was looking for some advice/input. I have included the reference info I am using from the product PDF.
This hot water recirc. pump has an internal and an external temp sensor for the auto adapt and temperature readings. I have a 1/2″ return line from the furthest fixture that sends that hot water back to the tank via this pump.
I plan to use the temperature control option because my usage changes day to day. From reading this it seems to only use the internal temp sensor as it makes no mention of the other. I assume this from reading this in the PDF. It gives little info on how it computes or calculates Ton or Toff but just says the following. t doesn’t make mention of utilizing the second sensor like the auto adapt below does as you will see below.
After this I did try the auto adapt option which I feel will not work for me but it also didn’t keep that return pipe warm and it probably never would even if it had 14 days of data since hot water usage for us is VERY random
My understanding for using the auto adapt option, is that it uses the external temp sensor (Which they say should be mounted 8-20″ from the output of the water heater) to measure the outlet temp and when the pump temp sensor detects a certain difference it turns on the pump. I do not plan to use this as our usage is all over the place so any calendar would be useless for us. I tried this but it did not keep the return pipe warm. For some reason it will stay in standby mode when the sensor is located where they state it and the water obviously gets cool in that return line which allows the hot water at the fixtures to cool down. The first time I power it on it runs and circulates water until it gets up to temp and goes to standby. At this point my understanding is when the temp at the pump gets to this “Ton” threshold it would activate the pump until the temp at the pump was within a certain threshold vs. the sensor at the WH outlet. I get this info from their PDF which leads me to believe that is how this should work.
Any opinions?
Thanks
Dave