Looking for advice on what rheem on demand heater to use in a closed loop for collection recovery. Need about 18kw and found one with a dial with digital readout(for ease of adjusting temp) that i like but don’t want to run into the problem some have with hot water problem coming in the feed side of heater. Is all i need a heater, makeup water line, air separator, prv, valves and pump? If some one could include pic. of their setup it would be super helpful (have a few screen shots of some from this site but more is always helpful) Thanks guys i really appreciate it
Here is the one i was looking at
