How to Flush Navien Tankless Water Heater

[Music] hey everybody troy and cole champion plumbing out of egan we're gonna show you how to flush a tankless water heater obviously we'll do it for you but if you want to save some money it's not that hard of a a task we've got our navient it's been installed up in the shop navi and tankless water heater this time we're going to use it's called haymaker there are so many different kinds you can also just use white vinegar and flush it through so what coal is doing is getting set up on the valves they have the washing machine hookup on them the hoses hook up so he just turned off both the hot and the coal going into it so now it's completely isolated um he hooked the line in up to this the line out up to this got a little pump in the bucket this stuff always read the directions if you're getting stuff if you're using vinegar i'd go what two gallons of vinegar probably yeah it's not as it's more diluted than the actual descaling so we're gonna mix up the solution this is a one-to-one solution you put this in with a gallon of water and it's gonna be easy how often should they flush their tankless coal i recommend once a year okay regardless of the status of oh i have great water or mine's marginal water just do it once a year it's the maintenance part this is your heat exchanger that heats up and heats your water when we flush it it's going to cruise through all of that those fins and back down and just clean all that out so that burner stays good um in maintenance for warranty purposes if this never gets maintenance 10 years down the road it needs a new heat exchanger they could potentially say we're not going to warranty it because you didn't do the maintenance call on it yeah that's a great call we we warranty if if we put a new softener in like that brass master we did with this one we will absorb the 15-year labor warranty with the manufacturer warranty so they have a 15-year manufacturer warranty on the heat exchanger if we install water softener with the install of a tankless we will warranty that tank was parts and labor for 15 years so you have nothing to worry about bumper to bumper so he's got the solution mixed up one gallon of water one one jug of that he's got both his hoses we're gonna make sure we unplug the machine or turn it off and open up those valves did you get it turned off already yep the power power is not plugged to the tankless so we don't heat up our solution there we go so just pull the cord out quick he's got both things on and just dumping it right into the same bucket pumping it through into the heat exchanger it's dumping it back out into the bucket and how long do we need to do this for uh 30 to 45 minutes i mean if you really see a lot of crud coming out and discoloring i'd probably go a little longer but if you're gonna do your maintenance once a year that's how long you really need to do it all right well i'm gonna chime off now and then we'll get back on when we turn the pump off because this literally you just let it run let it run for 30 45 minutes and we'll show you how to shut it back down and fire it back up all right so we're back on been flushing her out now he's gonna turn the pump off by unplugging it you can see the solution there's some crud in there not too bad though we don't we don't use this for showering or anything it's just for training so what's the next step i usually like to take the hoses off turn the cold and hot on run the faucet without the tankless on for about five minutes just so if there's any residual in here we can kick it out of here oh so you're kind of flushing out the solution yeah you you could to leave this one on open the cold up and then let it shoot out of the hot side for a little bit if you wanted to same difference if you just leave your faucet run you know leave don't go around open up all your faucets just go to your main one we always like to use a laundry tub faucet if you ever have one um because it doesn't have flow restrictors and stuff like that less less of a problem so you can see he's closed the valve there [Music] got that valve closed both hoses are being disconnected so you're not going to flush that through now i'll just go through the faucet you know if you don't have a drain or something by you you just gotta let it run a little longer notice he still hasn't plugged the machine in you wanna you wanna give it a good flush before we turn it back on so pop this filter out quick too yeah this is important this is a once a year gig with with the navien it was just a quick pin you saw him pull there's any debris it will get caught in there there's nothing in there right now let's show them that clip that was just a simple pull and popped out so here i'll put it away you put it back in you got to be careful you don't get that o-ring off because it will start to drip a little bit on you so just going straight and smooth yeah you kind of might have to turn it a little bit okay and you can see the two little holes put the pin back in that's the filter so you wanna make sure you clean that every time you're doing the the flush of the tankless water heater and we got one more that's uh our incoming filter right here this is any cold water coming into the unit this is the screen filter for anything coming in so explain what the other one was i thought this was the other one this is where the heat exchanger any debris in here it'll fall down and collect into here okay this one is your cold water coming in the screen so it protects any debris going into your unit got it and that one we can just do a backwards flush in the sink yep you can just take it off rinse it out this one looks pretty clean obviously this is a training purpose tankless so it doesn't get used like a home and that was just hand tight no wrenches there's just the o-ring in there so you just get it snug and done so this entire process takes the only tool is the pump and two garden hoses two small garden hoses turn the cold and hot on keep it unplugged still come over to the again the laundry tub is our favorite use obviously open up the hot side just let it run for a few minutes all right so flushing a tankless water heater less than three minutes to do the steps 30 to 30 or 45 30 to 45 minutes to complete the flush how long should they flush this through now i'd probably go like five minutes just a quick five minutes because then you know you're getting all that fresh water in the system and kick back out of it through the lines down on here then you can shut it off plug it back in there we go so once you plug it in it will fire up all by itself if you have a tankless water heater you need it flushed you can obviously follow the steps on this video or give us a call 651-365-1340 look us up on the web www.championplumbing.net and as always please click the like and the subscribe button anything else thanks for watching thanks for watching [Music] you

Channel: Champion Plumbing

Views: 45,464

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Id: JbETESziSVI

Length: 8min 23sec (503 seconds)

Published: Fri Apr 15 2022