Proper installation of a Rinnai condensing tankless water heater.

In this video I show a couple of very important install procedures that will make the installation and the unit trouble free.
The unit we installed is a Rinnai RUR98I natural gas unit with a dedicated 3/4" circulation loop already installed by the contractor when the house was built.
The bypass valve is important if there is no return loop in the house and must be installed. The factory installed plug must be removed and the supplied filter installed in it place.
If you have any questions please e mail me at [e-mail]
If you would like to help out my channel with future video's please visit my Pateron page at,
www.patreon.com...
Thanks Mike

[@nealstoughton4025]

Mike is a very helpful person. I had a question about my anticipated tankless install and he generously offered to speak to me by phone and patiently answered all my questions and gave his valuable perspective. This kind of information is invaluable because it is given honestly and without personal benefit. Thank you, Mike!

[@TheBuddylab]

neal stoughton can’t youse copper here it doesn’t last. We now do all our institutions with Uponor

[@CougarZeke]

Mike- thanks for all the videos! My son and I installed a RUR199iN yesterday and couldn't have done it without you! Thanks so much!!!!!!

[@jord0220]

Thank you Mike for taking the time to come to my house in St. John’s Florida and going over the pros and cons of a conventional water tank system and a tankless system. Your knowledge and experience assisted me in making my decision to go with a Rinnai tankless system. Looking forward to having you install the system in a couple of weeks.

[@michaelcuttic7281]

Mike, your videos are very informative and really made my DIY install (RUR199e) a breeze. I had a gas company run my gas line and I ran the electrical for an outlet and plumbed in the water lines (yes, I pulled permits and had a code inspection!). A key point is to bleed the gas line and water lines BEFORE powering on the unit. I did that, very well, I thought; but, I got a code 63 on the first run. I shut down the unit, burped the pressure relief and it fired right up on the second go. All of your instructions are logical and well-thought-out. Thank you for making the videos!!!

[@JonathanCastro-rc2xl]

This was an exact replacement for the old one that lasted about 10 years. kzbin.infoUgkx7yWIKcrbA9KMHkGSfcgxW2lsjHT6B8Sh The top of my mitigation tube by my roofline was just a 90 elbow which allowed too much debris to fall down into the fan, eventually ruining it. Without this issue, I bet it would have kept running another 10 years. When I replaced this fan, I added an extra elbow joint so the top tube now it does a 180, which should solve that problem. The radon guys around here wanted to charge me a $300 diagnostic fee, then parts/labor (probably close to $600 total). I installed this all by myself in about an hour for the cost of the fan; it would probably be even easier/faster with two people. FYI the manufacturer's warranty greatly differs depending on whether you install it yourself (1 yr warranty) or have a licensed installer do it (10 yrs).

[@cusnator]

This video from Mike is the most comprehensive one out there on KZbin. I reviewed prior to installing my system and went back to it recently to troubleshoot

[@cbaykal001]

Mike thank you very much for everything you have been doing with these videos, you are a great teacher and generously sharing your knowledge with the community. Also greatly appreciate the support you provided for my upcoming tankless install. I appreciate you taking the time to answer my questions and helping me with the details. I truly appreciate your product recommendation, will certainly do the RUR Rinnai.

[@waldoalvarez6166]

After watching Mikes'videos I have learned a lot about rinnai tankless water heaters. It turns out after completing my installation of my water heater. model. RUCS75i I was getting a 25 code because I missed drain pipe so my water was hot for a few minutes or less then cold, I emailed Mike and almost instantly he replied with the correct answer to solve the problem, so I did it and now I can enjoy constant hot water in the entire house. I thank Mike for all his assistance to me, I really recommend this expert, I can ssure you never will be disappointed.

[@imdeplorable2241]

After watching three of his videos, I would hire this man in a second. Both knowledgeable and honest. Very hard to find both qualities in a businessman.

[@ThatTanklessGuy]

thank you very much for such a great comment. buy the way I love your KZbin name 🇺🇸🇺🇸🇺🇸🇺🇸

[@imdeplorable2241]

@@ThatTanklessGuy A. You earned it.👍 B. Pelosi gave it to me.😆🤣

[@bobcolorado3491]

I have a smaller Rinnai, been operating perfectly for over 12 years. Excellent video. Thank You

[@TheBuddylab]

Bob Colorado thanks for the comment they are great units. You should get another 12 years out of it. Mike

[@wongchong-bm3vk]

Mike, Thanks to you I did a professional installation of RINNAI tankless water heater. I really appreciate that you took time out of your busy schedule to give me some hints and corrections by phone now my heater is installed and waiting for the remote to come on the mail to finalized. I will text you the final product of installation. Thank You, Mike you are the best.

[@howieorama9067]

WoW! Mike the video on youtube was awesome I installed a R94i Rinnai unit . This weekend and hooked up the gas line and away I went. On Demand . Thanks Mike.

[@rudyhabbu9264]

This video is the best as I plumber went step by step to install the piping. Especially important ones are the spring loaded check valves (you need 2 of them by the way). Thanks again Mike. Appreciate your knowledge dissemination.

[@stlaww77]

Hey Mike ....I’ve Had the RuR199 Unit sitting around ...I’ve ran the Propane lines and Mounted it to the wall but Not Installed.....After watching ur Videos I’m almost certain I’m Ready to Do this Install💪💪.....THANK YOU‼️💯

[@rjk2539]

Hi Mike. Thank you for taking the time tonight to talk with me about several questions I had about my newly installed Rinnai RUR199. I can honestly say your videos and depth of knowledge on the tankless Rinnai pushed me to get the unit I did. Thank you!

[@kevin.797]

Mike is a huge help, definitely knows his stuff. He helped me over the phone finding out why the circulation feature on my unit wasn't working. Thank you!

[@donaldmalsch4102]

Hi Mike, Great videos they help so much for me to understand the Rinnai product....

[@TheBuddylab]

I’m glad it can help you. Mike

[@scind2585]

I like your CPVC water lines. My forever PEX lines are failing after 13 years. PEX is bad!! Love your video.

[@h4hir1]

This is great video for any DIY guy. Covered 100% information with technical information. Mike please keep doing this kind of great video. I bet you one day you will be so popular on KZbin and in DIY'ers. You don't know how much people praise for your help. God bless you. Great work.HIREN

[@TheBuddylab]

Hiren Patel thank you very much there’s more to come. Mike

[@h4hir1]

Mike after doing so much research I had decided to buy TAKAGI brand tank less heater. Then I came across that TAKAGI got sold to the A O SMITH. After TAKAGI got sold , their tech support is not doing well to support their products. So after that I started to do research for the RINNAI and realized that RINNAI has the best tech support and product support with great warranty. Also they are industry leading since long time. Also this is Japanese company so I would prefer better quality with best service and warranty. So I finally bought Rinnai RUC98IN. I tried to educate myself from all videos and article from youtube and internet , Yours is one of the best informative video to the current plumbing ,gas and construction code. You have shown every single small detail very nicely. I am requesting that when you do next time any installation video, please use close body cam like "GO PRO" kind. And also please upload full video so the all details can be seen. I am little advance DIY so I can quickly grasp lots of information while you fast forwarding the video, but still detail video will be great information for newbies.Keep doing great work.Good Luck. -Thank you, Hiren Patel-NJ

[@TheBuddylab]

Hiren Patel they are the best. I’ve installed all the major brands and Rinnai stands out the best. Mike

[@dekonfrost7]

Hiren Patel buy navian. Top quality

[@dangda-ww7de]

navian is junk, i would of buy norilitz. @@dekonfrost7

[@dekonfrost7]

First you are a beta male. Second a gossip 3rd not a plumber. Sonplease fucknoff. Navien best warrenty best equipment for a tankless.

[@dangda-ww7de]

idiot. @@dekonfrost7

[@baldwindesigns1269]

Mike you are the man! thank you so so so much for all of your help! I was able to get help from mike on the phone with my install! he is very knowledgeable and made my install so much smoother!!! Please keep up the amazing videos. It seems that there isn't to much info out there when it comes to actually installing and venting them!

[@benben-rv4rs]

Mike thank you so much for taken time out your day to call me. The info you past along about installing the Rinnai RUC98iN with schedule 40 PVC pipe was priceless ( right on point) : >.

[@larrywilliams4311]

Mike, Could you talk a little about how to go about installing a dedicated return line system. Does it need to run to the furtherest hot water faucet in the house, even if we rarely use the sink in that part of the house or can it run to the furtherest facet that you want hot water to be available? Would PEX be a good choice for the dedicated return line? How about check valves? Do you use more than one and if so where? Thank you.

[@shawnwright7120]

Excellent video. Very thorough. Thanks for sharing!

[@armandoramos5724]

Mike, thanks for taking time from your busy schedule to address my questions. Your videos are very detailed and you are very knowledgeable. Keep posting your videos. Take care...

[@ezmirza]

Honestly there’s not that many people know how to fix or troubleshoot Tankless Water Heater I have a Jacuzzi brand which is Renni Engine. I’ve learn a lot watching Mike video. I wish I could contact him via phone for advise the error code 11 I had done almost everything it goes away then come back. At his point maybe it time to replace.

[@ThatTanklessGuy]

Call me at 19042385349 today around 6pm eastern time and I will go over it with you and you don’t have to switch lol Mike

[@ezmirza]

@@ThatTanklessGuy Mike thank you I’ll call you at 6pm I’m on Easter time zone.

[@charlieking8785]

thanks so much for this video. we are about to have this type of unit installed soon. nice to know how and it is doing. thanks again enjoy your videos be safe.

[@TheBuddylab]

Charlie King very glad it helped.

[@sodapopkid12]

I totally don’t understand what he’s talking about 😆😆 but i would totally trust this dude he looks like he doesn’t want to waste your time or his 😆😆 his son is lucky to have a knowledgeable father.

[@carsonrush4]

good video, from a rinnai pro installer up in Canada. very informative and interesting the differences from Florida to here.

[@carsonrush4]

We are awaiting the new units for a bunch of projects hopefully in stock this month. Rinnai is by far the best product in North America

[@lanabraaten-allan4296]

Love your detailed videos...wished the yoyo's in Canada would watch and learn instead of wanting to replace with a tank. Love my tankless....

[@donaldmalsch4102]

Mike I`ve been watching your videos on the Rannia product very helpful stuff. Quetstion ... How can I recirculate water if I have a Baffle that has a shut off for each hot and cold for every ficture ?

[@TheBuddylab]

If your talking about the Viga mana block system you cans do it correctly. Sorry Mike

[@donaldmalsch4102]

@@TheBuddylab Hi Mike thanks for replying. Are you saying it can be done or can not be done ? I`m not using a Viega Mana system but I have 3 sepeerate manafolds. It is the same concept. Thanks Don

[@Ali-nt2lj]

Hello Mike, Thank you for very informative videos and generosity with you knowledge and expertise, I have installed a Rinnai CU199iN in a house, does this unit compatible with a recirculating pump? I have installed a Grundfos circulating pump and the crossover valve but I don't get any recirculation, any insight would be greatly appreciated, Thank you

[@josevilca6493]

Hi, Mike, thanks for you show you knowledge that is very helpful.

[@user-kq5qp6dh8l]

We call them combi boilers in England. We also run the central heating off it. So you have, gas in... Cold in, hot out, flow and return... A fill loop from cold to return, with a magnetic cleaner before boiler intake, a condenser pipe out.

[@user-kq5qp6dh8l]

@@beachplumb yeh, mskes sense. He is in Florida right. No need for CH.

[@user-kq5qp6dh8l]

@@beachplumb yep, we have hot water heaters too. Cold in off mains hot out. Mostly electric these days. Still a few old ones.... Gas.... Vent... Out there, but becoming obsolete.

[@DaksheshPatel-ko7vf]

Hey Mike - great video. Quick question. How do you connect to condensation pump so that if you have a malfunction at the condensation pump, the water heater shuts off or times out? I have two RSC-199in units and I’m not sure where to connect the two wires on the pump. The TSB from renanai says to connect it to white and green wire by condensation discharge pipes but we can’t find those wires.

[@SF-rl7hl]

Excellent very informative, I would suggest you could teach a class in plumbing at some tech HS or community college! Great job! Thank you.

[@jogog9204]

great informative video thank you. the grumpus/bypass cost ??

[@TheBuddylab]

Jogo g that comes with the Rinnai unit. I figure it would cost around $ 20.00 Thanks for the comment Mike

[@richardwoodcock849]

I have an RUR98i. A thermal bypass valve is not installed at any of the fixtures, but the screen is installed. I have the plug. Did they make a mistake when they installed my unit? I have a dedicated return line but the FILTER is installed. Is it bad that I do not have the PLUG installed? What problems can I run into?

[@jeffbarnes9543]

Trying to find a video showing the proper connection for a recirculating pump to a RU 199 IN. Does the provided pig tail provide 120v to the pump?

[@user-kq5qp6dh8l]

Is the vent not to close to the window. In England we have a minimum distance from vent centre outside to nearest window frame.... Carbon monoxide safety regs.

[@lrc87290]

I have a RUC80IN read whole manual. I don't think it has a pump. but it can control a pump. I do not plan to use one. Thanks for the video.

[@Gazellemm11]

I just bought a rur98ip and all of my fixtures are under 25 feet, first floor only, going through a auqasasa unit for well water with a UV attachment..... and I want to use a pex manifold as my distribution unit for water to the house because I feel it would be easier to do and change/add in the future.... am I right to think I can’t build a recirculating line into this setup or would I someone how be able to do so? Furthermore, is there a benefit to the recirculation line versus the internal recirculation in regards to the life of the unit?

[@TheBuddylab]

Call me at [phone] and I will go over it with you Mike

[@epifaniomarroquin8211]

Es usted un gran maestro

[@peterszagala8463]

Mike, Can you vent a condensing rur unit into the garage? my house is a 4 story townhouse with nieghbors attached on both sides and the unit will be placed in a furnace room that is right next to the garage as you walk into the house from the garage. please advise

[@TheBuddylab]

It depends on how big the garage is? I don’t recommend doing that but sometimes it’s necessary.

[@peterszagala8463]

Mike’s Wood Shop garage is 15’ by 30’

[@scind2585]

I am considering a recirculating Rinnai. But I see that the warranty is good for only 3 years instead of 10 years for the recirc units. This has me some concerned.

[@peteaparicio2856]

Hello Mike I have a Question is galvanized pipe ok to use were U R...? In California requirements for gas line supposed to be iron pipe or black pipe, thank you for the instructional video

[@ltsgarage7780]

Mike is supposedly a good factory trained tech. He should know what he is doing. I like the fact that it comes with the bypass valve. I've always used Navien tankless heaters. Navien does have all stainless steel heat exchangers. Which I like better than any other. Stainless steel doesn't corrode out like the Copper heat exchangers. Nice install job. Did he do it? I dont care for 2 things. 1. The gas line coming down the wall is really croocked. I would have used rigid steel pipe coming down the wall. I never expose flex gas lines. 2. At the bottom of this gas line. Is where I would have put my drip leg. He has one over under the tankless. I just think it would catch more under the line coming down the wall.

[@MightyBrutus]

Mike - I hope you are doing well as I love your videos. I had a RUR98i installed 6 1/2 years ago. When I watched this video @ 9.52 you make the comment "a nice screen to prevent bugs from getting in". I suspect a nice screen was not installed on my venting as I have seen spiders under the air intake cap on the left. Do you have a video that can point to me on how to install that screen? Thank you

[@phil3304]

I installed a RUR98i N with drain valve, check valve, and ball valve on the dedicated return "Hot water line". I also have a check vale on the cold supply line. My question is ...... Is it necessary to install a "thermal expansion tank ????????

[@TheBuddylab]

Phil you can if you want to, but it’s not necessary. Thanks for the comment Mike

[@bobbysmith7101]

My thermal bypass never got installed ( I have it in hand ) but the screen in installed. I cannot find the plug anywhere. I think they made a mistake when they installed my unit. I have a dedicated line but the FILTER is installed. Is it bad that I do not have the PLUG installed? What problems can I run into?

[@MrAtomBee]

Great videos love them. Much thanks . Have to say you sound just like Peter Griffin.

[@ThatTanklessGuy]

Lol never heard of that but thank you very much

[@Irnotslowable]

Hi Mike, I have a RUR199eP and I have a question about the "terminals for control" or "Additional Controller" terminals. Can these terminals be use to connect the unit to a Building management system? As in a set of dry relay contacts that would OPEN for ON and CLOSE for OFF? I have considered using 1 leg of a mechnical style water heater time to turn of my unit during non-peak time ex. 9 pm - 6 am. What are you thoughts?

[@stanleychappell3709]

Where does the remote controller hook up on the rinnai outside unit rl75e

[@kj8779]

Hello the outlet in the vid didn't look like a GFI version is that needed since it so closet o a water source.

[@TheBuddylab]

Here in Florida all those outlets in the garage are protected by a GFI I would recommend you put a separate circuit either protected by a GFI outlet or breaker. Mike

[@edwardryu7926]

Mike, thank you for all posting. I am trying to install tankless heater and I see other videos and they used copper pipe for water line, but you used PVC(I am guessing)? what is benefit to use PVC and which is better option to use? If PVC is better, what kind of PVC pipe should I use specifically? Thank you,

[@peterleahey9866]

Mike, 2 weeks ago I installed the rinnai v94i unit. On 2 occasions while taking a shower the water went ice cold. I had to turn the faucet off, then back on to get hot water again. What causes this and how do I fix it?

[@adampajcz8719]

Why are you using galvanized pipe for the gas supply?

[@hermanbruns7526]

My builder plans to put in two of these unit in my new construction home. How do they work in tandem? Is it a primary and secondary and they are wired together somehow? Thanks

[@vaspar9871]

If using the cold water as a return does this cause the cold water pipe to have warm water in it? So when you turn on cold water would you get warm water at first.

[@ThatTanklessGuy]

no the bypass valve had a thermal activated piece in it that shuts it off when 110 degree water hits it.

[@vaspar9871]

@@ThatTanklessGuy Thanks so much for the info. found out that my Rinnai RU160IP does not have the return pump in it. But I can put one on it. So for now I'm just going to use it as is. Great video's, I have been an Electrician for over 30 years, I should make some video's to help people out too.

[@jm100368]

Is there a reason these might not be putting out very hot water? Mine is set to 140 and even the the closest fixture doesn’t get very hot

[@stanwerner7484]

Rinnai or AO Smith --which do you prefer or recommend for a "Tank less" application?

[@883chas]

does the rinnai condensing unit need an expansion tank ? thanks so much

[@terryredmon1073]

Will this supply a shower that produces 6 gpm of flow give a water temp. rise of 65 degrees? According to Rinnai, that degree rise will put out about 5-6gpm. But some of that water I assume will be supplied from the cold water side.

[@TheSkyPod]

Can an outdoor model such as Rinnai RU199eN be mounted in attached garage when you vent it like a indoor model ?

[@TheBuddylab]

No it can not

[@TheSkyPod]

​@@TheBuddylab Ok , I see that there is no exhaust or intake on top of this model. Thanks.

[@retiredperson4054]

With a concentric vent doesn't the Exhaust "C0" come back into the vent since the fresh air inlet and exhaust outlet are so close together? Seems like it would just circulate back into the fresh air part of the concentric vent ? What am I not understanding here?

[@ThatTanklessGuy]

No it doesn’t the way the vent end is designed and the power of the fan it keeps both apart from each other

[@retiredperson4054]

@@ThatTanklessGuy Thanks for your reply. It just made no sense as when the two 2 inch PVC pipes are used for that they must be kept 12 inches apart?

[@rosscarmichael78]

I love the videos Mike! I’m about to install a Rannai V94IN. My question is, I have the normal cold and hot copper lines that went into my water tank heater. I also have a red line that comes from the hot water spigot at the bottom of the tank, to a recirculation pump then goes into the wall. What do I with this red line and do I need to reuse the recirculating pump. Lastly, do I really need the large expansion tank? Thanks Ross

[@robertbrewer9915]

Why do I need a regular? My gas supply is 7 inches of water column for my interior install of a RSC160iN.

[@TheBuddylab]

You only need a regulator if it’s 2 pounds natural gas or 10 pounds propane. If you have 7” you don’t need one. Mike

[@iharar]

Hi mike I install rinnia Rc98i and I used concentric vent system when I cover the vent on the left I get error code 10' when I open the cover it works fine am I doing some thing wrong on the venting ? Thank you for your feed back

[@TheBuddylab]

Dayan Ahmed e mail me your phone number and some pictures of the install and I will call you tomorrow night. [e-mail] Mike

[@Adi-S]

Hi Mike, first thanks for all your videos. I have a RU199I heater that I want to use with an external re-circulation pump. Does this tank-less heater have the Circ-Logic built in or not. I am quite confused already with all those options.

[@TheBuddylab]

Adi Satzinger call me at [phone] after 6pm tonight and I will go over it with you

[@dclausing]

Mike, do you have to install a check valve on the dedicated recirc line to make sure the cold doesn’t back flow into the hot?

[@bdt10101971]

I have a question for you, I have a R94XiN can it be converted to propane?

[@jersey07042]

What is the code that I might encounter if the condensation line fills? Also if I don’t have a “T” should I add one?

[@TheBuddylab]

Code 25 and yes install a T

[@jersey07042]

@@TheBuddylab Thank you so much. I didn’t know what that line was used for, all I knew it had metal fittings and they used plex. It was leaking and when I installed it as you suggested with the new material. You were 100% correct the old metal fitting were corroded out inside the plex pipe. There was nothing there except a little slither of thread left. Is there a way to get more pressure throughout my home. I only have 1 tankless, but I have a 2 story home? Thank you for what you do!!

[@cbrixyo6533]

Is that galvanized pipe you used to connect the gas? Also why use cpvc instead of pex

[@MjrSlakr]

Greetings and thanks for the helpful videos. I have the rur98i everything installed as you described using a dedicated return line. pump Circ pump turns on and seconds later error code 63. I've checked through the code troubleshooting guide with no luck, Code 63 over and over. any suggestions?

[@TheBuddylab]

MjrSlakr call me at [phone] after 6 pm tonight and I will go over it t

[@MjrSlakr]

thank you will do

[@MjrSlakr]

Mike we talked a month ago regarding code 63 and the draining procedure necessary to cure the code. I need to review with you again. I also left you a text message on your phone. I know your very busy and your time is appreciated thank you @@TheBuddylab

[@stlaww77]

Mikes wood shop Hi mike .....I’m Up here in the state Of CT where I’m Supplied by well water and About To DIY An RuR199.....any tips u can Share?

[@jmanifesto]

great video Mike... you have some amazing videos... keep up the good work!

[@TheRebuilt1]

Just curious if this unit doesnt need a pressure releif valve before the water inlet as i didnt see one.

[@WillNoble]

Mike, you are awesome. These videos are so well made and you do an excellent job explaining everything. You are inspiring me to attempt to do my own install of a RUR199eN. This brings me to my question, do you have a video of an outdoor installation? I am leaning towards going with an external unit (located in CA) because of the venting hassle and not wanting to put a (large) hole in my wall for venting. I'm also worried I mess up the roof connection given the multiple angles (slopped roof). Plus I wanted the extra room in my garage. Anyway initially, I was intimidated on powering an exterior unit, until I watched your video on outdoor power solutions. I have stucco exterior walls and will need to make holes for the gas, hot, and cold lines. What is the best way to do clean, air-tight connections through stucco for these lines? Also, are the exterior units loud? If so, I may revert back to mounting it indoors as in my garage it would be in a closet. Lastly, do you recommend vibration isolation pads when mounting the unit to lessen the noise? If so can you recommend something? Thank you again for all of these videos. I created a playlist of them and have gone through half of them in the last 48 hours.

[@allezvenga7617]

Thanks for your sharing

[@dfleming9665]

Mike, thanks for the info! Would you recommend the condensate neutralizer kit? I’m draining into a condensate pump which ejects outside.

[@madnessatgath-anactingproj784]

U MUST put the nuetralizer kit...the condensate is so acidic it will eat through your drain pipe

[@issamabdallah4734]

Great video, clear and quite informative. I would like to install a RUR98iN unit at my home through a certified rinnai plumber while I provide the necessary material. I have these two questions : 1- Is this the vent used in the video a "Rinnai 223176PP 12-Inch Condensing Horizontal Termination Kit"? (12 Inch is good enough for my case). If not can someone point me to the right name to search on Amazon for e.g. 2- Does the valve kit come with the RUR98iN unit? + Would this valve kit be better: "Webstone 44043PR 3/4-Inch IPS Isolator EXP E2 Tankless Water Heater Service Valve Kit with Clean Brass Construction"? Thank You.

[@TheBuddylab]

The vent is a Ubbink horizontal termination kit comes with a 12” pipe two coolers one elbow . The box must say for condensing appliances only. The valve kit that comes with the unit is very good.عصام Issam عبد الله AbdAllah

[@donsmith2254]

Mike, any info on how to install recirculating pump, Grundfos GTK15 or other brand, without a designated return line, I have the Rinnai RUC 98in which has Circ logic installed, but could go with another type pump under furthest sink, thanks

[@TheBuddylab]

don smith use the Taco demand system with the wireless remote.

[@dsmubz]

Where is that gas regulator at?

[@cathymacdonald1366]

Are there any technical settings to be made inside unit before use?new unit.

[@josevilca6493]

hI MIKE, may I ask please what can I do is the installation don't have return water I need to make return water or not is necessary, could you please can you give some ideal. thanks a lot for help me.

[@TheBuddylab]

E mail me at [e-mail] and I will send you my phone number so we can go over it. Mike

[@revadan]

Sir, looks like you have a softener next to the heater, do you have an instruction on how to install that type of softener with the rinnai?

[@shawnpolizzi3674]

Hey Mike, first off - great videos. You are super helpful and informative. I have a question about this install. My home is plumbed with CPVC throughout - but there is about 15-18 inches of copper at the current WH supply and return. Can I replace this with CPVC to remedy the corrosion? Can the whole unit be plumbed using CPVC? It looks like the install in this video uses CPVC? Any help is appreciated. Keep up the great work... Installing a RU199iN soon! :)

[@TheBuddylab]

Shawn Polizzi yes replace the copper with CPVC and you can pipe in the unit with it. Mike

[@larrywilliams4311]

Mike, I have a manifold type (home run) type plumbing system and recently installed a RUR199iP system which of course has the build-in circulation pump. . I do not have a dedicated return system so I installed the crossover kit that came with the RUR199ip at the farthest faucet to the system. I am not sure how much the circulation pump is actually helping to get hot water sooner and have been considering converting my plumbing system back to a trunk-and-branch type system. My question is what would be the effect if if I were to put crossover valves at each of my plumbing fixtures since as each are on their own plumbing circuits, instead of converting the plumbing system back to the traditional style of system. Thank you. Larry

[@larrywilliams4311]

Mike, I forgot to say thank you very much for all your informative videos. I watched them over and over as I was installing my first Rinnai tankless water heater!

[@rich13076]

what is you have a small house do you leave the plug in if not installing the bypass valve

[@masetna8911]

Hi Mike I'm a little confused on which vent kit to buy for my new RUR98IN.Im looking to make one hole through wall. Please advise

[@TheBuddylab]

masetna etna use the Unbink concentrinic vent system. The supplier will have it. Mike

[@masetna8911]

Thank you Mike

[@CatManHH]

When using the cross over valve, does the cold water run warm or does it stay cold? Thx

[@TheBuddylab]

Gregg Kennedy the cold water will get a little warm very slight. It it stays warm or gets hot you have a bad cross over valve. I hope this answered your question

[@GasMonkey2254]

Thank you!!

[@vbbartlett]

First thanks for the videos! Can you describe the conditions you would consider using the dual vents compared to the concentric venting?

[@TheBuddylab]

vbbartlett both will make the unit work very good. The double vent worked better on longer runs and it’s cheaper then the concentric vent pipe. ( you must use schedule 40 pipe) The concentric vent works better on the short runs like what you see in the video. I hope that was helpful. Thanks for the comment Mike

[@vbbartlett]

Yes thank you very much. Im having it installed in a basement and the length is 15+ ft so provides me a good idea on what I should expect.

[@TheBuddylab]

vbbartlett so 14 plus feet, how man elbows because every elbow is equivalent to 5 feet of pipe. It would be perfect if the vent could be as straight as possible. Mike

[@vbbartlett]

The run of pipe would go up and turn 90 deg at the ceiling and to 10ft directly out above the sill plate. At worst it would have on additional 45 deg to go out at a different location. (only because the furnace intakes might be too close to where I hoped it would exit.) I believe code says I have to be 5' from the two air vents for the util room.

[@TheBuddylab]

vbbartlett I’m glad it helped. Mike

[@markfed]

Great video, very informative.

[@TheBuddylab]

Mark Federowski thank you very much

[@ssoden78]

Florida doesn't make you vent at least 36" from a opening window or door? Clean install by the way, we do a lot of these in Colorado.

[@raulcruz1984]

Mike, I have a question the over pressure valve. Can it be just lowered to the ground like you have it or does it need to go some where outside?

[@TheBuddylab]

Raul Cruz the relief pipe can go to the ground about 4” off it.

[@willieb1632]

Is that a shark bite ball valve and 3/4 90? Lol that’s hilarious!! Proper installation?!?!? Guy uses shark bites lol!!

[@nvptx]

is that code violation electrical outlet right under right side of the tankless. hum..

[@TheBuddylab]

Nope electrical can be near the unit. Outlet is off of a GFI down the wall.

[@darnice1125]

Is there an expansion tank on the system? It's required.

[@SmitHVAC.]

Where are you from? An appliance over 100,000btu vented within 36" of an opening to a building is a no-go according to our code

[@crystalmetcalf2389]

I see you do a lot of videos on the condensing units. We installed the V94IP with vertical venting. Do we need to hook up the drain at the neck? And should be use the circulator at farthest point?

[@Mr.Caring]

Hi

[@Ben-xo3bj]

Love your videos, isn't the vent too close to the window? 4' minimum I thought