How to protect your Rinnai and Navien tankless heater during freezing temperatures.

[@The_Easy_Life]

Thank you. Your videos are so helpful. I live 100 miles from any major city with big box stores etc, so learning this for myself and knowledge thank you.

[@neckofthewoods24]

Speaking of protecting the unit but kind of an off topic question, do you think the micro filter on the cold side before water enters the unit, that filters needed? I have a 199k propane unit I’m using for radiant floor heat. It’s a sealed close loop setup and on my setup I do have a larger filter screen before water gets to the unit. I’m using a 50/50 radiant coolant and distilled water mix and several times a year that little screen gets plugged with green slime. Super easy to just shake it off the screen but when clogged the system doesn’t work. Not sure what the harm would be to remove that screen and let the unit burn that slime up or not let it collect at all! The larger screen doesn’t collect the slime. Not sure what micro ports or channels are inside the unit where that green slime could accumulate and that’s a place I can’t get to for cleaning if it happens. But I think the unit will run better with more free flowing fluid vs a very tiny choke point that gets worse by the day.

[@jonnysegway7866]

Mike, love your videos, these heaters aren't used much in the UK but I have one and thinking of another just for a shower - would you have any reccomendations for showers?

[@lockechip]

Do you need to open the condensate drain?

[@lockechip]

How does the freeze kit drain the pressure relief and condensate?

[@whotookmymojo]

Hi Mike, I took all the steps in your tutorials when having a code 12 on the water heater. I cleaned the ignitors, replaced the regulator, got a larger gas intake hose. flushed the tank and I still get a code 12. Bluestar propane will not service the tank because it is not fixed on a permanent structure. No other place will service it. Can I ship the Rinnai V53DeP Tankless Hot Water Heater to you for repair? I dont know what else to do and hate to spend the money on another tank since this one is only a few years old. Please help, thank you. PS, When I turn on the water just a trickle the burner stays on. If I turn the water just a little more up the burner shuts off.

[@07LUTE70]

I have a Noritz tankless water heater has a massive water leak that you can see that seems to. be behind the fan or the back middle of the machine.when I first put on the cold water. I googled this problem on line and the consensus was probably a leak in the cold water inlet I'm seeking from your expertise because I can't afford to call a plumber however I am pretty good with mechanical ability Praise Yah. I just want to know what you think. I picked up the heater that was repo-ed from a double wide mobile home in Florida where I live. The machine looks to be in pretty good shape It is a Noritz model NR66-OD.Lp gas . Any help is appreciated. Thanks for your time.

[@jilllong6564]

Desperately looking for a PCB replacement #U245-1200-G-HX02. Rinnai discontinued in 12/23. Any ideas?

[@GateKeeper97]

Mike, I sent email to your AOL account and tried on Facebook. If you can find a minute please look for an email about a screw in a rinnai heat exchanger.