Mike thanks you for your years of service in the FD and also thank you for continuing to assist others. We would also like to thank you for reaching out to us after we had emailed you in regards to our water heater issues., especially taking time out of your day to explain in detail what we need to do to make our system work properly. You saved us a few hundred dollars by explaining how to do it ourselves. Very detailed information. Thank you sir.
I wish my installers would’ve seen this video. They install the RSC199in gas water heater and I start complaining about not getting hot water in the furthest portion of the house and after about a week they get back to me and tell me that the installer decided not to install that piece And it was still on his truck. Big difference with the thermal bypass valve installed at the furthest point of the house although we do have our kitchen faucet for some reason still takes over a minute to get hot water to it. They are working on it but Your videos have helped me ask the right questions. Scary thing is we went from a 40 gallon electric hot water heater and we never had a problem at the kitchen faucet which is roughly 30 feet away from the tankless. They tell me they are working on it. Two weeks.
I just received my new RE140IP heater. I got ABSOLUTELY NONE of the extras that were promised to be included for the instal.I didn't even get the bracket to put it on the wall! Im livid! Ive been without hot water for weeks do to massive snow and no delivery possible. who do I alert of this? I purchased my unit from Home Depot. purchasing all these extras will debilitate my budget. Thanks so much. You are a Mench- I adore you!
Hello Mike, I’m really enjoying your info on the tankless water heaters very informative.. The question I have is I just installed a Rinnai v75i that he purchased on line through Lowes I believe but I would like to know what I can do with a material list for a recirculating line on this unit. Thanks, Greg
Hello everyone. I did not install this bypass valve under any sink in my home, but here is what I found out! None of the websites nor Rinnai explains how this thermal by pass valve actually works. If, I assume I install this valve under the sink, the hot water eventually will pass the valve through the cold line and it just make the cold line get warm a little bit. There is no way the hot water will push through the cold line period! The only way the hot water will circulate on the cold water line if the line has a circulated pump from the output of the hot water tank. Here is another thing! You may have hot water all the time on both line cold and hot, and you may need to install a timer on that pump to shut it off in a certain time, or you will end up to pay more for the gas or electricity (depend on the heater runs on gas or electricity). I think I rather pay for water than the gas because the water is still cheaper. Putting that bypass valve on will take you guys to modify with the whole process! Don't do it dude! Be safe!
I have an RSC199IN unit and installed this thermal bypass valve. I had an issue where every time I turned on the cold water, then the cold water off the fan inside the rinnai unit would kick on. I isolated the problem by turning off the sink valves the thermal bypass valve was connected to and the problem no longer happened. I found that throttling down the sink valves (not all the way open) solved the problem. I also had the following on cold water line: water hammer arrestor, spring check valve, and an expansion tank primed to my city PSI. If you are seeing a similar issue with your unit, try this
I have this problem. Still haven't been able to fix it. Even if I turn off the valve connecting the thermal bypass, I still get the fan coming on when turning off the cold water.
Great video Mike. I have the Rinnai i60 combi boiler. (Great boiler) The manual has a schematic showing the use of the bypass valve using an external circ pump and a timer. Obviously I would have to use a stainless steel pump. My question is what do you think happens if the bypass closes before the timer shuts the circ down ? Once again thanks for your time in posting helpful videos.
I really like the way you explain so details. But I have some questions for you. I don't see any thermal bypass under any sinks in the house. Should I install one and should I install one for every sink in the house? Is there any modification on the pipe before installing a thermal bypass valve? Thank you very much!
Mike thanks for great video. Furthest fixture away is a guest bathroom rarely used. Does it make more sense to put it in a more often used bathroom which is still fairly far from the RUR 199 but not the furthest? thx in advance!!
Hi Mike, thanks for all the videos you produce on the Rinnai tankless heaters. It's been a big help for me and the family. My question, I don't have the wifi panel on this unit. I have it in the garage and have easy access to make any changes on the heater. But it sounds like the bypass valve will continue to circulate when the temperature drops below 105? If that's the case, I'll probably just order the wifi panel and program different times to keep the unit from continually running.
How do I remove the bridge valve assembly? Turn off the main to the house, bleed all the lines, and can you make a video on how to uninstall it and hook up the sink regular again?
the hot water heater in my house is in the middle of the basement with a T in the line sending hot water in two different directions. Where should I place the crossover valve in this situation? Will it only recirculate on the side with the crossover valve?
Hello Sir. I just bought a new house with a V65E mounted outside on the extreme left side of the house (garage). The kitchen is on the extreme right side of the house and takes forever to get hot water. The master bath is not an issue currently as it is near the left side of the house. What is the best recirc setup?
Sir I wish I watched you before I let the "PROFESSIONAL" install my tankless. Apparently, throughout the plug I need to have to properly install the Thermal ByPass Valve...
Hi Mike, im in a dilemma and looking for one help. I currently have the RU199iN installed in my house. I do not have a dedicated recirculation line and getting one installed is cost prohibitive. What are my options for having any kind of recirculation in the house? i'm very confused with my options at this point.
How does this effect - Iced makers in refrig if you always hot luke warm or hot water be recirc in the cold line ? My simple brain says that now there is always luke warm water in this system am i worng ?
Good info. I am a new condo owner that has a Rinnai Rucs65i tankless water heater. Just clarify this bypass valve would not work with my model? If not do you recommend something that would work with my model in getting hot water faster to the master bath shower? The water heater is in the garage and the condo living area is upstairs with the master bath towards the back of the condo. Thanks for any advice, Jeff
This type of valve easily gets gunked up by hard water scale, and it is not repairable. The NaviCirc valve can be cleaned and reused. Both have the same purchasing cost.
Hi Mike and thanks for the great work! I understand that the RU models will not work with the external pump and bypass valve. The problem for many of us, there's no cost effective way to add a return line. Will the RU work with the pump/valve combo (like Aquamotion AMH3K-RN) that installs under the sink without a return line, since the pump will shut off when the valve closes and not create back pressure? It seems that's why a traditional bypass valve will not work.. is that right?
Hi Mike.. What if my farthest (most problematic) sink has an RO system installed to it? In other words, can I have this installed in the same sink where there is an RO system? Or that is a no no
Does it have to be screwed to a wall in a perfect horizontal and vertical position? Does the position affect anything or is it all thermally activated and position doesn’t matter as along as hot and cold are correct
Update: They came back and said they actually could install it, but they installed the valve vertically, instead of horizontally like in your video. Does it matter? My installers just told me they can't install my thermal bypass valve because my hose is directly connected to my faucet 😭😭😭
Do you have any suggestions for when this valve starts making a ticking sound in the middle of the night with nothing running? Ours works well and has been installed for about a year but suddenly, it is making noise sometimes. It isn't all the time but it happens and since it is in the master bath, we hear it at night!
Well, mine is making ticking noises in the night as well plus the other thing I noticed is that the water pressure drops when I have recirculation on, so I turned it off after couple of years and its been off since then, but this valve still keeps on making noises which kind of annoying now! That is why I started watching these videos to learn what its doing so that I can fix it.
Mike, you say that using a thermal bypass will "confuse" an "RU" unit. Well, what about this scenario (with an RU180i): Suppose that I'm never using any auto-recirculation mode (as in "economy" or "comfort"), but instead I'm just doing "on demand" (with the Control-R app, or a button). It seems like that might avoid *confusing* the tankless unit. Would that work? (Thanks in advance!)
Well, I've tried it and it works. Here's a summary: The key is to use the Schedule (in the App, in conjunction with the Control-R module), setting it for, say, a 15 minute period first thing in the morning. (Or whenever, and for however long - but the shorter, the better.) The point is that by setting the Schedule, this restricts the functionality of Comfort Mode (or Economy, whatever you've got set) to just that 15 minute period: in my example, this effectively means that the Rinnai will auto-start the Grundfos pump exactly once, first thing in the morning (at 6:00 am), but never again for the rest of the day. Thereafter, we simply use our push-buttons for on-demand recirculation. We thereby avoid *confusing* the Rinnai's Circ-Logic. And thus far, this has been working like a charm. (Not to mention that is using recirculation only in on-demand mode, we're saving energy.) I hope this works for others, too.
You say this will not work with a RU-199. This is not correct, even according to Rinnai. I have a RU-199 with the proper HE pump series kit. It works with the thermal bypass valve.
It would be great if you could contact me because I have a system that's all screwed up and I would make it worth your while if you could talk to me for a few minutes
Really wish the HEpump kit came with the 1/2”x3/8” comp adaptors for under a kitchen sink. Built in braided lines with all these kitchen faucets
Mike thanks you for your years of service in the FD and also thank you for continuing to assist others. We would also like to thank you for reaching out to us after we had emailed you in regards to our water heater issues., especially taking time out of your day to explain in detail what we need to do to make our system work properly. You saved us a few hundred dollars by explaining how to do it ourselves. Very detailed information. Thank you sir.
I wish my installers would’ve seen this video. They install the RSC199in gas water heater and I start complaining about not getting hot water in the furthest portion of the house and after about a week they get back to me and tell me that the installer decided not to install that piece And it was still on his truck. Big difference with the thermal bypass valve installed at the furthest point of the house although we do have our kitchen faucet for some reason still takes over a minute to get hot water to it. They are working on it but Your videos have helped me ask the right questions. Scary thing is we went from a 40 gallon electric hot water heater and we never had a problem at the kitchen faucet which is roughly 30 feet away from the tankless. They tell me they are working on it. Two weeks.
Very, very helpful! Thanks so much for your content!!
Thanks so much for this video…super informative!
I just received my new RE140IP heater. I got ABSOLUTELY NONE of the extras that were promised to be included for the instal.I didn't even get the bracket to put it on the wall! Im livid! Ive been without hot water for weeks do to massive snow and no delivery possible. who do I alert of this? I purchased my unit from Home Depot. purchasing all these extras will debilitate my budget. Thanks so much. You are a Mench- I adore you!
Love this guy
Hello Mike, I’m really enjoying your info on the tankless water heaters very informative.. The question I have is I just installed a Rinnai v75i that he purchased on line through Lowes I believe but I would like to know what I can do with a material list for a recirculating line on this unit. Thanks, Greg
Hello everyone. I did not install this bypass valve under any sink in my home, but here is what I found out!
None of the websites nor Rinnai explains how this thermal by pass valve actually works. If, I assume I install this valve under the sink, the hot water eventually will pass the valve through the cold line and it just make the cold line get warm a little bit. There is no way the hot water will push through the cold line period!
The only way the hot water will circulate on the cold water line if the line has a circulated pump from the output of the hot water tank. Here is another thing! You may have hot water all the time on both line cold and hot, and you may need to install a timer on that pump to shut it off in a certain time, or you will end up to pay more for the gas or electricity (depend on the heater runs on gas or electricity). I think I rather pay for water than the gas because the water is still cheaper. Putting that bypass valve on will take you guys to modify with the whole process!
Don't do it dude! Be safe!
Does anyone here listen to what is being spoken or just ask questions that have been answered in the video? 🤔
Asking for a friend. 😮
I have an RSC199IN unit and installed this thermal bypass valve. I had an issue where every time I turned on the cold water, then the cold water off the fan inside the rinnai unit would kick on. I isolated the problem by turning off the sink valves the thermal bypass valve was connected to and the problem no longer happened. I found that throttling down the sink valves (not all the way open) solved the problem. I also had the following on cold water line: water hammer arrestor, spring check valve, and an expansion tank primed to my city PSI. If you are seeing a similar issue with your unit, try this
I have this problem. Still haven't been able to fix it. Even if I turn off the valve connecting the thermal bypass, I still get the fan coming on when turning off the cold water.
damn without the video who will know this thing. Probably only the rinnai service guy
Great video Mike. I have the Rinnai i60 combi boiler. (Great boiler) The manual has a schematic showing the use of the bypass valve using an external circ pump and a timer. Obviously I would have to use a stainless steel pump. My question is what do you think happens if the bypass closes before the timer shuts the circ down ?
Once again thanks for your time in posting helpful videos.
I really like the way you explain so details. But I have some questions for you.
I don't see any thermal bypass under any sinks in the house. Should I install one and should I install one for every sink in the house? Is there any modification on the pipe before installing a thermal bypass valve? Thank you very much!
Mike thanks for great video. Furthest fixture away is a guest bathroom rarely used. Does it make more sense to put it in a more often used bathroom which is still fairly far from the RUR 199 but not the furthest? thx in advance!!
Yes that would be correct. We don’t always put it at the farthest fixture. Mike
This guy is cool
Hi Mike, thanks for all the videos you produce on the Rinnai tankless heaters. It's been a big help for me and the family. My question, I don't have the wifi panel on this unit. I have it in the garage and have easy access to make any changes on the heater. But it sounds like the bypass valve will continue to circulate when the temperature drops below 105? If that's the case, I'll probably just order the wifi panel and program different times to keep the unit from continually running.
Mike, how will having multiple bypass valves confuse the unit? Do you think it would confuse the unit if I only use the wifi button (no schedule)?
Hi Mike! Any issue using a thermal expansion tank with the RUR199eN when it’s using thermal bypass valve/crossover mode? Pro’s/Con’s?
Is it possible to install this on a Delta Lahara faucet with the “Y” spout adapter?
How do I remove the bridge valve assembly? Turn off the main to the house, bleed all the lines, and can you make a video on how to uninstall it and hook up the sink regular again?
If I install this bypass valve do I need a check valve installed on the main cold line coming in?
Hi - the furthest faucet is in my kitchen and I have an RO installed, does this make a difference?
the hot water heater in my house is in the middle of the basement with a T in the line sending hot water in two different directions. Where should I place the crossover valve in this situation? Will it only recirculate on the side with the crossover valve?
So when you use cold water, will it draw water from the hot water side at the vanity where this valve is installed?
Hello! Back again. Can you make a video on how to remove the bridge valve and put everything under the sink back to normal?
I have two videos with a two sided prop showing exactly how to do it.
Hi Mike, thanks for your videos. Do you know where can I get a 3 way valve for a RINNAI tankless water heater model RB 25/32 ? Thanks, Javier
so what happen if you have two sink in the master bathroom and having to take long in two sink for hot water
Hello Sir. I just bought a new house with a V65E mounted outside on the extreme left side of the house (garage). The kitchen is on the extreme right side of the house and takes forever to get hot water. The master bath is not an issue currently as it is near the left side of the house. What is the best recirc setup?
Hi. The problem I'm having it at shower faucet. If I install it in bathroom sink would it fix the problem on shower faucet? Thanks.
Does the REP199i have that filter part he switched out in the beginning?
Sir I wish I watched you before I let the "PROFESSIONAL" install my tankless. Apparently, throughout the plug I need to have to properly install the Thermal ByPass Valve...
Do I need teflon to prevent leaking? Mine leaks even with some teflon
Hi Mike, i don't have tankless heater. i have whathe heater, can i used this. thanks
Hi Mike,
im in a dilemma and looking for one help. I currently have the RU199iN installed in my house. I do not have a dedicated recirculation line and getting one installed is cost prohibitive. What are my options for having any kind of recirculation in the house? i'm very confused with my options at this point.
How does this effect - Iced makers in refrig if you always hot luke warm or hot water be recirc in the cold line ? My simple brain says that now there is always luke warm water in this system am i worng ?
Good info. I am a new condo owner that has a Rinnai Rucs65i tankless water heater. Just clarify this bypass valve would not work with my model? If not do you recommend something that would work with my model in getting hot water faster to the master bath shower? The water heater is in the garage and the condo living area is upstairs with the master bath towards the back of the condo.
Thanks for any advice,
Jeff
I like this circulation valve design better than the Navien valve. Any reason this valve wouldn’t work with a NPE240-A2 heater?
This type of valve easily gets gunked up by hard water scale, and it is not repairable. The NaviCirc valve can be cleaned and reused. Both have the same purchasing cost.
Where can I get the recirculating pump kit for a rannai tankless r94ls
Hi Mike and thanks for the great work! I understand that the RU models will not work with the external pump and bypass valve. The problem for many of us, there's no cost effective way to add a return line. Will the RU work with the pump/valve combo (like Aquamotion AMH3K-RN) that installs under the sink without a return line, since the pump will shut off when the valve closes and not create back pressure? It seems that's why a traditional bypass valve will not work.. is that right?
Yes it will work. He is mistaken.
What about a Noritz unit? Can they use a thermal bypass valve?
Hi Mike.. What if my farthest (most problematic) sink has an RO system installed to it? In other words, can I have this installed in the same sink where there is an RO system? Or that is a no no
Does it have to be screwed to a wall in a perfect horizontal and vertical position? Does the position affect anything or is it all thermally activated and position doesn’t matter as along as hot and cold are correct
Can i put a Recirculation thermal bypass valve on a RL75i
so if you install this bypass valve shown you do not need to install any other water line back to the rur199,it will do it automatically ?
What is the part number for the white plug
Update: They came back and said they actually could install it, but they installed the valve vertically, instead of horizontally like in your video. Does it matter?
My installers just told me they can't install my thermal bypass valve because my hose is directly connected to my faucet 😭😭😭
Why not install 2 or 3 if the system is heavily branched?
what about a RL94i
Hello Mike, I have a question can I put this thermal bypass on my Rinnai Tankless water heater. My model number is V94i REU-VC2837FFU. thank you.
Do you have any suggestions for when this valve starts making a ticking sound in the middle of the night with nothing running? Ours works well and has been installed for about a year but suddenly, it is making noise sometimes. It isn't all the time but it happens and since it is in the master bath, we hear it at night!
Well, mine is making ticking noises in the night as well plus the other thing I noticed is that the water pressure drops when I have recirculation on, so I turned it off after couple of years and its been off since then, but this valve still keeps on making noises which kind of annoying now! That is why I started watching these videos to learn what its doing so that I can fix it.
Just installed it and mines rattling for some reason. No idea how what I'm doing wrong. @@handymangamer238
Where does the cold water go. Doesn’t water only flow in one direction and it’s a closed system. I’m confused on where the water goes.
Me to! The cold water is under pressure where does it go??
Mike, you say that using a thermal bypass will "confuse" an "RU" unit. Well, what about this scenario (with an RU180i): Suppose that I'm never using any auto-recirculation mode (as in "economy" or "comfort"), but instead I'm just doing "on demand" (with the Control-R app, or a button). It seems like that might avoid *confusing* the tankless unit. Would that work? (Thanks in advance!)
Well, I've tried it and it works. Here's a summary: The key is to use the Schedule (in the App, in conjunction with the Control-R module), setting it for, say, a 15 minute period first thing in the morning. (Or whenever, and for however long - but the shorter, the better.) The point is that by setting the Schedule, this restricts the functionality of Comfort Mode (or Economy, whatever you've got set) to just that 15 minute period: in my example, this effectively means that the Rinnai will auto-start the Grundfos pump exactly once, first thing in the morning (at 6:00 am), but never again for the rest of the day. Thereafter, we simply use our push-buttons for on-demand recirculation. We thereby avoid *confusing* the Rinnai's Circ-Logic. And thus far, this has been working like a charm. (Not to mention that is using recirculation only in on-demand mode, we're saving energy.) I hope this works for others, too.
By the way, I'm using the Grundfos pump together with an AquaMotion ODR Valve (crossover).
Mike a little drunk today.
You say this will not work with a RU-199. This is not correct, even according to Rinnai. I have a RU-199 with the proper HE pump series kit. It works with the thermal bypass valve.
🐵💕🙏
Thanks
It would be great if you could contact me because I have a system that's all screwed up and I would make it worth your while if you could talk to me for a few minutes
Call me at 19042385349 today after 5pm eastern time and I will go over it with you
Mike does not give answers.
Dude.
Just stop
This guy don’t know what he’s talking about or he’s just outdated.
Just get to the point
Where can I get the recirculating pump kit for a rannai tankless r94ls