Every time Mike says: -so, next week,... I cringe expecting to hear there will be an exam... lol. But seriously, the generosity that Mike shows giving out all the knowledge and experience he has accumulated through years of hard work, says it all about his kind, selfless heart. Thank you and may God bless you Mike!

@user-hy3ds7hk8q

8 ай бұрын

Omg right? That's hilarious. But ur right I feel like I'm in class and there's a test next week. Yikes lol

Mike, I can’t thank you enough for all the great videos. I learned something from each one I watch definitely a lifesaver keep up the good. Less d plumbers like myself truly appreciate your expertise and the devotion you give to the trade.

This is a man with the heart of a teacher. Thanks Mike! I appreciate the guidance.

Thanks a lot Mike, your videos are really helping me out with my 2 condensing units … I’m new to these RUR units & couldn’t do it without you!

Mike is unbelievable and full of detailed knowledge. He went out of his way to answer my email and spoke to me directly to help resolve issues with my recirculating line for my tankless RUR199iN. He is like the jedi master for Rinnai! Thank you Mike for your awesome videos!! Ally

Mike, You are truly a awesome teacher and tradesman. I teach pastime at a local trade school and I know you would be great at it.

Best KZread video I have come across! Thanks Mike! You are the best!

Excellent video Mike.

Thanks Mike - another great video. Saved me a lot of research!

Mike thank you so much for making this video, it's exactly what I needed👍 Really thorough and easy to follow along

@ThatTanklessGuy

2 жыл бұрын

Glad it helped

Just installed a RUC98i, although I feel like I should thank you for doing a quick, clean install! Thank you so much for these videos.

@TheBuddylab

3 жыл бұрын

Snakes Hits glad I could help

This was super helpful, you the man mike.

Extremely helpful and enlightening.

@TheBuddylab

3 жыл бұрын

Roger Todd thank you very much

awesome Mike straight to the point

Thanks. That was a great presentation.

I had a plumber come in and put in a dedicated return line from my kitchen faucet to the tankless. So the hot line goes from the tankless to the faucet. There's a loop maybe 20 feet from the tankless with a check valve in it and the arrow points to the tankless. The loop goes back to the tankless and into the cold water. There's a check valve about a foot from where the loop enters the cold water to prevent it from going back up that pipe. The loop goes into the tankless cold water inlet. The problem is that sometimes the water will just be lukewarm. I can touch the hot pipe coming from the tankless and it's hot. But it's like it keeps recirculating cold water into the pipe or something and never stopping. I'm pretty sure the tankless setting is 4B. I don't know if setting 5 is set to comfort or economy. The plumber who initially installed the tankless said it's a cold water sandwich. He is not the plumber who installed the loop. What's causing this issue?

Thanks! Appreciate the great information.

I learned alot, not sure if my plumber knows all about recirculation water heaters, so I will set up bypass ,filter and marked pages in instruction book for setup parameters

A born teacher

@ThatTanklessGuy

2 жыл бұрын

Why thank you

Thank you for explaining this. I’ve had my Rinnai RUR98i for the last six years. My dedicated return line never work that great I thought it was something just wrong with it. My installing plumber did not put in a spring-loaded (he used a swing) check valve, nor a drain valve. So I’ve been getting code 63 on and off for the past year and I realized with your video I can't bleed the air from the return line. Thank you for explaining this to me. At least now I can talk to Rinnai guys with some level of intelligence. These plumbers in California just don’t know what’s going with these Rinnai systems or how to install them properly. Why don't they just explain from Rinnai so we laypeople can hold these plumbers accountable, it's really not rocket science.

@ThatTanklessGuy

3 жыл бұрын

that’s so true if the installer just read the manual some of these problems should not happen

Thanks this was very helpful

great tutorial, thank you.

Great video.

great stuff, ty so much!

I just installed a 75i and your videos help me in the biggest way. Especially where u said not to leave the white part of the pipe exposed to uv.. thank u. Also wanting to know why it's recommended to use a 2 stage system with the rinnai. Can u explain.

Great video and the mock up in the garage was priceless!!

@ThatTanklessGuy

3 жыл бұрын

Glad you enjoyed it

What size should the dedicated return line be or is recommended? My house uses 3/4" main trunk with short 1/2" to the fixtures. I have about 40 feet from the tankless to the last sink. BTW, I watched all your RUR videos since I got a RUR199in and can't say THANK YOU enough!! It helped me prepare and slowly but surely install my tankless. I have it set up on No Recirculation currently because my old tank heater finally rusted out while I happen to be standing next to it lol so I simply just connected to the existing lines but will be putting in the dedicated return line shortly since I have access to basically all the piping. THANKS AGAIN MIKE!!

Excellet teaching video

This video was very helpful but I would like to know if you can install or add a recirculation valve on a Rinnai RL94E "REU-VC2837WD Tankless water heater?

Hi Mike I have a RUC98i just installed. The hot water works great and no issues but the circ system won’t continue to run. Piping is exactly like you show in the video. I have it on a timer and when it turns on, the pump will start and in little red light will display , but after a couple of minutes it will hot heat anymore Using a grunfoss 1/2” bronze circular, any thoughts? What’s a good gym for the pump? How long can I have the circ pump ( I know 24 hours is not good ) also does the circ work better at 120 rather than 130? Thanks in advance. Kerry

😢Mike, great video. I have a RL75i, can I install a thermal valve only, or do I need to install a recirc pump in the unit first?

Aren't you creating a closed loop system with the dedicated recirculation line? In practice, I think you need to add an expansion tank. Otherwise, the expanding hot water is going to cause over pressure.

Hello Mike, I have been following your exceptional video series on the Rennai installation. I do have for know a quick question. For the hot and water piping, is there a required type of pipe that must be used? I am in Dallas Texas and the unit is a condensing model that I am installing in the attic space. Could I use red and ble 3/4" PEX piping? I look forward to your reply. And a gain, Thank you so much for your great videos! Lionel,

Would this thermal bypass valve work with the older r85 units? or would you have to add a circulator to the mix? (No dedicated line involved) PS Friggin' great set up yo got!

I have a remote bathroom that is branched off of the main loop (it has no return line) and located about 20 feet away from the loop. Can you use both the return line from the loop and the thermal bypass valve in the remote bathroom at the same time?

Hi, Thanks for the videos and instructions. My question is, Can I run a return line for part of my house and a Thermal bypass valve for another part? In other words, can I combine the two systems? I'm not able ro reach the odd bathroom with the return line Thanks

Hi Mike, I have had two firms quote me Rinnai RU199IN. I do not have a dedicated return line.One quoted the RU unit and will not install an RUR stating they are problem units.The other was pushing the RUR stating it will provide instant hot water and will not waste water. He also said that the cold water would not be affected. The amazon ratings on the RU seemed much better than the RUR.Which will produce hot water with the least problems and is the best choice for me. I would appreciate a rapid response since I must make a quick decision.Thank you for your help. -- Murray Bob

@gracetemplechristiancenter1237

3 жыл бұрын

So what did you get, I just ordered a RU199ip, I didn't get installed yet, but I wanted to have a circulation pump put in, if I can't do it with the RU, I will return for the RUR.

@Zharsergey

2 жыл бұрын

@@gracetemplechristiancenter1237 Did you end up using the RU or upgraded to RUR?

Does the thermal bypass valve make the cold water not be as cold? At least for a little bit?

Hi Mike, what module do I purchase to convert an RU199iN to add a recirculating pump?

You should check out Navien! They are far superior units in my opinion. I actually came across your video bc I have a customer wanting rannai over my recommendation. (Customers are more familiar with rannai and they stick to what they know) You can also get a decent deal if you have a good distributor vs the rannai is pretty steep.

@TheBuddylab

Жыл бұрын

I did and that’s all I install

Hi Mike, thanks for the great video. I just had a RUR 199in installed and planned to use the bypass valve, but I did not have the bypass filter installed. I want to do it now, is it safe to remove the bypass plug and install the filter? Do I need to drain the heater first? or just power off is enough, I am not sure if hot water will come through where the bypass plug is if I unplug it. Thank you

@ThatTanklessGuy

3 жыл бұрын

yes you will have to drain down the tankless. When you done installing the filter you will have to bleed the system. make sure you follow the correct parameter settings on page 50 of the instruction manual. mike

@yanwang2018

3 жыл бұрын

@@ThatTanklessGuy Thank you, Mike!

The cold water with the spring check valve. That water is coming from the street Correct

This video is very helpful, but I have a question around the thermal bypass. Does the thermal bypass need to be installed on every faucet I want hot water instantly or just the farthest one and somehow it will work for the rest?

@TheBuddylab

3 жыл бұрын

Only one can be installed in the farthest fixture. Mike

Love your videos, very helpful! I have an RINRU160IN unit and want to add a recurc pump. Is rage Grunfos #595916 compatible?

thanks for the video, since 3/4 inch pex. fittings are 4-5mm smaller in I.D. than copper or cpvc, do u know from your experience if using copper or cpvc for supply lines is better for max. flow even if the water pressure for the install is up to spec.

@TheBuddylab

3 жыл бұрын

Pex. Is better even with the smaller I.D. And type A pex is the best.

@scotlindaman6648

3 жыл бұрын

@@TheBuddylab thank u

Hello, Mike. Would you mind providing the specific model number of the Conbraco check valve you typically use (or a link to one)? Thank you, sir!

Why is it important to have a spring-loaded check? As opposed to a clapper check. I'm experiencing noise with the check valve in my unit.

I did not purchase a renai tankless water heater but I do have a question about the concept of a tankless water heater and using the bypass valve. How does this affect your cold water pressure and am I understanding you correctly when you say the unit senses the the back pressure and shuts off the pump?

Hello Mike, I run in your video looking for help un the dip switch settings in a Rinnai RB 30/36 sanitary+heating gas unit. I connected a remote ambient thermostat to both of my Rinnai units, but I only selected one of them thru the heating button. My problem is that when the remote thermostat activates, both boilers start running in heating, regardless that only one of them had the heating option turned on. My plan B is to install two lamp-type switches on each remote signal but I want to avoid going so basic and messy on the installation. Thank you in advance.

If I have a dedicated circ line, can I also add the thermal valves at sinks that are still far off of the recirc line?

MIke, Can you have two thermal bypass vaves? Say your system sends hot water in both directions down the house... I'd think once one reaches temp and closes, the flow might slow down a bit in the re-circ system, and the other would keep open till it hits temp as well.. Or am I completely wrong.

Hi I have a bypass system with the filter plug installed in a rur199. I'm converting to a dedicated return line. Do I need to change the filter plug to the non filter plug.? why ? isn't it better with the filter plug ? thanks Ray

Your state code must be UPC, that cross connection (bypass) doesn't fly with our code in Illinois.

Hello! Will a recirculation pump work on my Rinnai RU199IN tankless hot water heater? I don’t believe it has a built in pump and I also do not have a dedicated return line so would need the thermal bypass. Would a Watts pump from Home Depot work?

Anyone in AZ that knows how to set this up? I need mine to be reorganized correctly base off this video.

Whats the reason for the spring check instead of swing? I installed swing on mine and it's horizontal so i didn't think it would matter? After watching your video I see i need to add a drain valve. Thanks in advance!

I have the RSC199e, and it doesn’t have the “plug” on the hot water line (in the out put area near the valve). I have it setup for recirculation with the crossover (thermal bypass) valve. It seems to be working correctly. Should I be looking for the “plug” internally?

Mike, do i need a return line in order to install a recirculation pump on a tankless water heater?

I Jus Have one Instaled on my property In Massachusetts but for some reason it's not doing the recirculation

Hi Mike. I would like to know if can I use this kind of tankless in my home. But my heat system is with radiators. So, could I use it?

HI Mike, I asked a question about using a manafold each hot and cold has its own shut off,and wanting to use the RUR 199 to recirculate. You answered But I didn`t understand your answer as to can it be done or not ??... Thanks

@TheBuddylab

3 жыл бұрын

No a RUR can not be used on a water system like that.

@donaldmalsch4102

3 жыл бұрын

@@TheBuddylab Thanks Mike for your help.... Love your videos

I’m new to your Channel . I just installed a unit . For a couple of weeks it worked fine . But now it come on for a bit then shut itself down then it kick back on . Still trying to figure the flow rate in the setting. I don’t know if that the problem or something else . The bathroom is the back of the house if you turn the water on in the shower it only gets so hot but if you turn the sink on in the same bathroom it kick up to hot 120 . So I don’t know if I need a flow rate setting set right or a bypass . Any help will be appreciate it . Ps this is only a One bathroom . home .

I do not have a dedicated return hot water line. I have a recirculation valve and external pump. What do I need to do with the cold water filter?

If you have a regulator on the water service, it would be considered a closed system. Is the inlet check valve necessary on the cold water.

I want drawing showing complete connection of return line

Can you show a setup with a dedicated recirculation and the RU SE+ series? I understand it can control and external pump? Thanks

@ThatTanklessGuy

2 жыл бұрын

I have a video on that

I’m looking to purchase RSC199iN Tankless. Can I use the Rinnai DRV to accomplish this as well?

I installed one in my house but I’m having issues with temperature when shower and washer is running. What will be the best solution? Recruiting pump ?

Hello Mike, I’ve watched a lot of your videos trying to find an answer to a question. I’ve got an RUR199en - I have a dedicated return line coming back to the cold. It looks like it’s been plumbed correctly, 2 spring check valves, etc. I have the wireless controller with the app on my phone. The unit works properly when a hot water tap is turned on. The problem is, it’s just not recirculating by itself. The pump just doesn’t kick on. I’ve checked the setting codes per the manual (hold A button, select settings for dedicated line) I hit the recirculate button on my app, it says it’s recirculating, but nothing happens at the unit. Any tips for how to test the pump is working? Thank you!

@ThatTanklessGuy

2 жыл бұрын

It could be a bad controller, I really don’t like them unless you are connecting the push button to it. I use the MC195 controller on all my installs Mike

when recirculating pump is running, how does the cold intake know to pull from the dedicated recirc in and not the incoming cold water, or a mix of the two? (Will the hot water have higher pressure because of its temp?)

@goldtooth10

8 ай бұрын

I have the exact same question. Also does it matter if the Recirculation line is plumbed closer to the tankless water heater than the Cold water line or not? @ThatTanklessGuy

Would this work on a right-95 DVN would a thermal bypass valve work?

Where does the cold water go from the hot side of the bridge to the cold water side? How does it get to the tank? I'm lost.

Is there something special that I have to do to access the parameters menu of a rinnai rl75i

@TheBuddylab

3 жыл бұрын

No there is nothing on that model just turn it on and after you bleed out all your hot water faucets plug it in and it will work. Mike

How to connect the bypass line

We recently had a Navien NPE-210S2 installed to replace a tank system with had a recirculating line in order to reach the far master bath on the opposite end of the house. I've been thru three plumbers that all gave up on trying to understand the connection points on both ends of the recirculating lines. Could you please tell me where each end of the recirculating line should be connected to. I'm at my witts end and out $3500 do far with not consistent hot water to the far end of the house. Please help

@TheBuddylab

Жыл бұрын

One end the farthest is connected to the hot water pipe somewhere behind a faucet. The other end near the tankless gets connected to the recirculating pipe on the Navien.

@WileysShenanigans

Жыл бұрын

@@TheBuddylab thank you Mike....that did the trick! I really appreciate your help!

Mike. Do we need a check valve on water inlet even when we don’t have a recirc line ?

@ThatTanklessGuy

2 жыл бұрын

No you don’t

Do I need a check valve going to the unit if I'm using the thermal bypass valve and no recirc line?

@TheBuddylab

3 жыл бұрын

No you do not there is no need for any check valves when using the thermal bypass valve. I hope this helped. Mike

@anthonybartolomeo4791

3 жыл бұрын

Thanks Mike. It helped tremendously.

@kennorthunder2428

3 жыл бұрын

I seen elsewhere that you do ONLY if you have a water softener. (Prevents damage to the softener)

@11tbrock

2 жыл бұрын

Thanks Mikes Wood Shop for clarification. Mike mentioned in the video he was using the check valve in the mock up only b/c he didn’t have enough CPVC. I was getting ready to email him, but this just confirmed what I heard in the video. Thank you Mike for taking the time to do all of these videos!!

Can I replace the mother mode it is there any way to repair the thankless got shorts circuit some where

@ThatTanklessGuy

2 жыл бұрын

Yes you can the model number for the mother board is on the paper located on the inside front cover of the unit.

@JOSUECISNEROSHR

2 жыл бұрын

@@ThatTanklessGuy thank you brother

@JOSUECISNEROSHR

2 жыл бұрын

@@ThatTanklessGuy my is a reem thankless do you think is the same than rinnai

Another big question to you Mike . This is part of the email from NIKOR gas company "If your equipment requires less than 6.5”WC and you currently have standard ¼ PSI delivery pressure your equipment should work efficiently without a pressure upgrade. If your new equipment requires more than 6.5” WC or you are requesting pounds delivery, please let me know at your earliest convenience and I will need to send you a different form to fill out." My question is - do i still need to use the recommended by you 2psi regulator ??. They mention about 1/4 psi gar pressure . i just worry is this is enough for RSC199in. thanks

@TheBuddylab

Жыл бұрын

It depends on how far the meter is from the unit and what pipe size you have.

Did he say, “Bob’s your uncle” ?

Will the pressure go up when the thermal bypass valve closes?

@TheBuddylab

Жыл бұрын

It should stay the same if you have a pressure drop you need to check the by pass valve for debris

@jon4231748

Жыл бұрын

@@TheBuddylab it has to raise the pressure to open the check valve

Spirovent.

Damn these valves are $61 now.

@ThatTanklessGuy

2 жыл бұрын

Tell me about it there has been at least 4 price increases

Hello Mike . can i have two dedicated return lines ? my kitchen runs on separate line and this is how my plumbing was build . thanks

@TheBuddylab

Жыл бұрын

Yes you can as long as they run back to one pipe

@przemyslawfras5622

Жыл бұрын

@@TheBuddylab so the circulating pump will handle that ? two loops one long to my bathrooms and one short to my kitchen . i use 3/4 tubing .

@TheBuddylab

Жыл бұрын

I have done three sides of a house. Tankless was in the second floor loop from left, right and downstairs

@przemyslawfras5622

Жыл бұрын

@@TheBuddylab so the length don't need to be equal ? my kitchen line is 3 times shorter then rest of the house. i just wonder if the long loop will get enough hot water before the circulating pump shot off because the short loop get warmer much faster . thank you

@TheBuddylab

Жыл бұрын

You will have to install ball valves or balancing valves to slow down the shorter loop for the big loop to catch up.

The problem is when you want the cold water!!!

I have the RU199i. not the RUR. can I use a thermal bypass valve to assist in circulating the water to my furthest faucet? I'm reading that the RU can not have a recirculation pump added. is that also correct?

@TheBuddylab

3 жыл бұрын

No you can’t the bypass valve will only work on a RUR Unit

@tjhoward8412

2 жыл бұрын

@@TheBuddylab Doesn't the RUC98i have circ logic so you can install an external pump and let the heater control it?