It's time for a new pool heater. Replacing my NG LAARS with a new NG fits my application the best.
I do plan to purchase the model with the cupro-nickel heat exchanger.
My understanding is the Pentair Mastertemp and Stay-Rite Max-E-Therm are the same heater except for the outer case.
Any advantages/disadvantages to the round black case vs. the rectangular beige case?
Perhaps one is insulated more than another??..... Maybe it doesn't matter.
Also, page 4 of the Max-E-Therm owners manual states something like, "running this heater continuously with water colder than 68 degrees may cause condensation which could damage the heater and void the warranty." I called Pentair and asked what this meant. They provided no additional meaningful information. Sounds like one of those ways to wiggle out of honoring a warranty. Anyone know what this means? Anyone experience "condensation damage?" The efficiency is only 84% so this should be a non-condensing vent with vent gases exiting the heater much hotter than 212 degrees F. Practically in the winter my pool water is 55-60 degrees. Occasionally during the winter I heat the pool for a long weekend. Guess we will have some condensation and have to deal with it. In reality condensation is more related to temperature, humidity, and due point, so their warning is very general at best. My problem with the statement, is its generality. I don't know what problem I am to avoid or how to monitor for said problem, etc.
As always, any help is appreciated.