Proper venting of a Rinnai RUR series unit.
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- Опубликовано: 30 сен 2020
- This is the last part on the series for the Rinnai RUR unites. This is the three different ways to properly vent this type condensing unites.
You have the three different sizes of concentric horizontal venting the 8' the 11.5" and there is also a 21" one
You can also vertical vent the unit with concentric venting but that's going to be a totally separate video.
The 2" PVC venting is the other option. (PLEASE REMEMBER THE PIPE NEEDS TO BE SCHEDUAL 40 PVC RED LETTER THATS FOR PRESSUER)
remember to install the two screens supplied with the tankless to secure the screens into the fittings.
a slight pitch outside is always good to get any condensate to run out of the pipe.
65' of total vent run and you need to minus 6 feet per elbow and 3 feet per 45*
Please follow the installation manual for all the distances need for proper installation of the venting and fresh air intake from windows, doors ect.
If you have a questions please e-mail me at economyplmbg@aol.com
I hope you enjoy this video and series.
Please hire a licensed plumber certified in level 3 Rinnai training and to follow all state and local codes. Please file a permit with your local building dept.
Thanks,
Mike
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Хобби
Mike- thanks to you, I'm a expert at tankless water heaters lol. Keep up the great work and just know that many people like myself couldn't do this without ya! I hope your son continues the legacy!
Thank you very much for such a great comment👍👍and yes my son is continuing with the business. Mike
Wow super impressed with all the info in a one take non edited video. Mike knows his stuff! Thanks so much!
Mike thank you. I just bought a Rinnai and the instructions are horrible. Because of your video it’s quite possible I’ll be able to make my wife happy for a few days you’re the best. Thank you.
There's medication for that.
Mike,
Thanks so much for walking me through all the necessary details of the proper venting as well as proper installion in your videos. But most of all I really, really appreciate you taking the time to speak with me personally and walking me through my specific needs. You are not only TOTALLY THE RINNAI GUY! You are a good and genuine man. It is quite refreshing to find people in this day and time, especially busy people, that are willing to take time out of their lives to help others. Especially dumb carpenters who are out of their realm of expertise. You are a champion! Thanks again buddy. I'll see about getting some cigars shipped asap.
Most sincerely,
Big B
South Carolina Carpenter
MIKE THANK YOU SO MUCH , once again, great video from a great teacher again. This message is for Rinnai, RINNAI team , consider hiring Mike so he can be one of the official trainers for your company and product, he will be great asset for your company thanks , John, Tampa, FL.
I just got to say, your videos are amazing. I'm installing an RSC199iN, and your videos are priceless. Probably couldn't do it without ya.
Mike, thanks for taking the time to walk me through the troubleshooting for my Rinnai RV53i. I was pleasantly surprised to receive your phone call this late in the evening. Rinnai should be grateful that you are representing their product. I will let you know how things come out.
This whole video was worth it just to get the information on how much run of PVC you could do. Thanks Mike!
No problem glad I could help
Thanks from Michigan, Mike.
Hi Mike this Tim your videos on You Tube are so helpful and great Thank you
Thank you for sharing your expertise!!
Loved the video, well explained. Thanks.
Great explanation 👌
Thank you , what a great video. Great job camera man too.
Love this. So many tips, so much knowledge. Thank you. Raphael nyc
Awesome thanks Mike 😊
Yay you answered my question i looked at a house today that has a Rhinnai and they had the intake coming from the inside of the garage and the exhaust going like two stories through the roof and I was like is that gonna work properly with the intake and exhaust in two different atmospheres, but I guess it works.
question answered towards end of video
I will be reaching out to get some parts
Another masterpiece! Thank you! If there is an existing exhaust vent for the furnace, how far should the concentric vent of the tankless be located from it to avoid contamination? I realize codes change between states. I have very few band joists left for new penetrations to vent the tankless.
Hi Mike. Thanks for the informative video. What do you recommend to use when the Ubbink concentric vent exits an exterior wall with vinyl siding? It seems that all the vinyl siding mounting blocks are either to small for the escutcheon or aesthetically too large (15" x 16").
Thanks for the informative videos, Mike. I do have a question.
Is there any performance differences between using the concentric venting vs the 2" separate intake/exhaust?
Thanks.
Thanks mike. My wife has this guy coming out next week who only does Rinnai installs but im sure she will cancel once i mansplaine why you can't just replace a tank system with tankless without running new venting and cutting new holes in the roof. She wont like that. Think we will just get a new hot water tank.
Good video one question how long can I run the 2 inch vent up through the roof thank you
Mike, I love your videos! Keep 'em coming. A fellow NYer here and I have a question? I moved to SE Virginia 7 years ago and for some odd reason they install their gas 50 gallon hot water heaters in the attic! WTF! I want to replace my hot water tank with a Rannai RUR199 in the attic and would love it if you could do a video on the proper set up and roof venting for an attic installation. Thanks, Anthony
I will be showing some things that will help with an attic installation. Call me at 19042385349 today after 6pm and I will go over it with you Mike
Hello super helpful video! Thank you for making it. I think my manual says it can be set up for room air intake. You mentioned not to do that ? Is it bad to use finished basement air for intake ?
Hi Mike, Great videos - thanks! I have a tankless Rinnai similar to your video and have descaled but when it is recently running, it vibrates and hums. I have looked into the exhaust from outside and clean. So, now trying to understand why the humming and vibrating. Any suggestions?
Thanks in advance.
What is the diameter of the hole needed in the wall to fit this pipe is it 8 inch?
6”
Question about properly seating the PVC at the Rinnai unit: there is a rubber seal in both vent openings. Does the PVC simply set on there or does it need to slip through the rubber seal?
HI MIKE, I just viewed your video and would like to consider changing to a tankless system. I have two Bradford White 75 gal in my home. One of the present units in not working and these units are now 17 years old. The other reason we would like to switch to tankless is the wall mount. We will need to have some work done to the Basement floor as we have a chronic flooding issue and have had and will need to be moved off the floor at some point. So now that I have given some of the back story, I would like to get your thoughts on which model of Rinnai (ruci98in) 11GPM? (to help maintain water pressure in the house) and the 15 year warranty. Do you prefer the non condensing models that have the same size Exhaust Venting pipe we currently use and have 16 in walls brick exterior. We have a drain area system to accommodate the line for the floor drain. Thanks.
How about if you going horizontal like in an attic? Doesn't it have to be 1/4-inch pitch?
Where do you find the Long sweep 90 sch 40 like in your video? All I can find like that are the drain pipe '90s
All I can find is schedule 40 is the short '90s
Thanks for your help!
If my plumber used 2x4 concentric venting, instead of 3x5 for our Rinnai RSC199IP and they want to use an adapter to connect the Rinnai to it. Is this ok?
Hey mike Thanks for all you do
Im not a professional but pretty handy. I havev a newer model RSC199Ip My question is about venting. Arecwecstill allowed the 2" sch 40 pvc? Can I use the inside of the ( one car) garage as my fresh air intake? And if I go out the back with the exhaust, what are the restrictions.
Close by is an AC Unit, and the soffit.
Thank You AGAIN Mike....Very informative....I sent you an e-mail....I look forward to hearing back so I can get to work on this project.
Hey Mike, I love your videos! Thank you so much for sharing your knowledge and experience with us. This is just great!
Question: For a roof venting, using two separate 2" sched 40 pvc, one for inlet and one for outlet, and placed 2 feet apart, could I create a lower profile vent? Meaning, does it have to stand 2 feet over the roof surface? could I just make a short rain hood, that only stands a few inches over the roof? And how hot does the exhaust get? I'm guessing less than 400degF or it would cause the pvc to loose its rigidity. Thank you so much for all you do. Mike
thank you very much
my house has a tanked water heater in the basement. i'd like to go tankless-gas what unit can i get that allows me to vent it into a masonry chimney? otherwise i'd have to drill through a 130 yr old stone foundation which i'd rather not do. thank you
Hey Mike, What is the width of the large concentric vent? I need to put a sleeve in my ICF house and need to make sure I leave enough room for it. Thanks!
Thank you sir
The rinnai RUCS75IN states 3 inch pipes if using the two pipe system. I dont have room for two 3 inch pipes can I use 2 inch instead?
Which model in Rinnai can be used for outdoor spa.. also can we use the same heater for the spa and few indoor shower if the load allows?
Mike - thanks for all these wonderful videos. I'm hoping you can help me.
We had an Eternal tankless for a number of years. We just replaced it with a Rinnai RU 199IN. The unit works fine but we have one problem I'd love some help with.
Whenever we run a cold tap anywhere in the house, we hear something turning on in the Rinnai. The "In Use" light does not turn on but something is running - I assume it's the flow turbine.
Following a suggestion from Rinnai's tech support, we installed a check valve on the cold inlet and also added a 2 gallon expansion tank. I got conflicting info on what pressure to set the expansion tank to - our static water pressure is about 67 PSI. I was told to set it to 12-15 lbs below that so I pumped it to 55 PSI. Neither of these changes have helped.
The problem seems to stem from the fact that we have 2 "on-demand" recirc pumps in the house. These are the under-sink pumps where you push a button when you want to get hot water. A pump drives the hot water back down the cold water line until the water is hot, which saves wasting all that water. If I shut off the valves to *both* of these units, the problem goes away. If I leave the valves to either of them open, the problem happens. One is a more powerful "Taco Genie" unit; the other is a residential "Chili Pepper" unit. Just to clarify - we do NOT have the RUR continuous recirc model.
- Would changing the pressure on the expansion tank to match our static water pressure help?
- Any other suggestions?
Thanks so much for any help.
When installing with the 2 inch PVC for the vent, how short can the riser pipe pieces be off the top of the tankless unit? Does it matter?
I did a job where I had barely enough room to 90 degree out from the top of the unit with like a close piece of PVC pipe then an elbow fitting looking straight to outside exterior wall. Is there some rule with the Rinnai venting that states that it had to be atleast 6 inches or something coming out the top of the unit before you can 90 degree out ? Also why can't you use a 2" PVC DWV 90 degree fitting looking down coming through the exterior wall outside with the screen in it?
Would an external rinnai be ok by a patio area under an awning or is the air too toxic even for that?
Mike, thanks for the info. I am learning alot. I need to ask you some questions about a model RUC98 that is in a house we just purchased but I don't see your email.
Mike - a bit off topic and I dropped you an email as well. Trying to set up a Recirculation pump for our R94LSi. Can I use the Rinnai kit? RWMKT01P? Will the Control-R help me with this and provide any features related to recirculation? We do not have a dedicated return and would need to use a bridge valve. Thank you so much!
Im replacing a traditional tank water heater, so could I use the existing hole in the roof, and use the ubbink venting and not make another hole in the roof for the intake?
Is the water heater less efficient using the 2-2" pipes vs the concentric pipe?
So,... why can't we push a 2" PVC vent through an existing 3 or 4 inch vent? It sure would make things easier on flat roofs. I could see using a reducer as a skirt to keep weather out of the double walled vent. Thanks.
Mike, do you have an idea about clearance below soffit that you can bring out these vents? What is the minimum distance allowed from bottom of soffit to exhaust vent? Also, what is the minimum garage size to use garage air for the intake?
you need to have it 36" below the soffit. it need to be a two-car garage or bigger.
Perfect
Mike can you let me know if you recommend using a pasco 22152 vertical vent with a rur 199
Hi Mike. Question about sharing combustion air. I'm having an RUR199 installed and installer is saying he will be sharing the 2" intake vent with my high efficiency furnace. I'm questioning if this OK? There will a separate exhaust vent but shared intake.
Mike, had a question about running the vent pipe up the old vent for tanked. After the old inner pipe is removed and the new pipe is ran, how is its weight supported? At a max length of 65 feet seems like it would be significant weight resting on the unit vent connection. I want to install this unit on my two story home (well under 65 feet) with an intake in three car garage and exhaust at roof via the old tank vent run.
Mike, just seen you have another older video covering exactly the topic I was looking for, thanks👍
What about using protective paint on any exposed PVC pipe? As is done on swimming pool piping.
Can you use the fresh air from your attic, for the intake air
Awesome video! When venting through the wall using pvc, Are the 45s used outside mandatory or can I use 90s?
My Rinnai R94LS is making a loud foghorn noise when I first use hot water in the morning. A plumber said the external gas pressure is good. I read on the internet that I might need to recalibrate the internal gas pressure. How do you do that on a R94LS? Thank you.
First did the plumber check the fan and the exhaust? Did he check the gas pressure at the tap on the fitting directly on the gas inlet. It has a red and white piece of tape on it. As far as checking the high/ low gas settings this would have to be preformed by a qualified Rinnai Tec.
If you would like call me at +19042385349 today at 4pm eastern time and I will go over it with. Mike
My plumber installed our unit with the separate intake and exhaust (as discussed starting about 7:50) on our brick house. He didn’t put escutcheons on the outside, but he filled the space around the pipes with concrete, so it’s sealed nicely. Are the escutcheons necessary, then, or do they just serve to provide a finished look?
I use them as a sealing ring and it trims it out nicely. As long as he sealed it it will be fine. Mike
Model of that Milwaukee pipe cutter you used?
Mike, apologies if you already have an instructional video on this - but couldn't find it. I also thought the question pertinent, as you're a woodshop-guy as well. We have a Rinnai RL94 in our laundry room, it's an ugly install (especially the wood beams attaching it to the wall and pipes, and valves. Question; can I install a wood cabinet around the unit and pipes?
Jon Greenwood Jon, call me at 904-238-5349 tomorrow after 5pm eastern time and I will go over it with you. If you could send me pictures of the install and the area. Mike
Mike, what is the recommendation as far as performance and optimizing for longevity? Concentric or dual pipe? This would be for a Rinnai Condensing RU199IN in the garage.
Mike, this is awesome!
Do I need to add a condensation drain for the RUR model with 2in PVC venting straight to the roof?
Same roof venting installation you describe here at the end of the video.
Yes you do follow my video on piping the condensate drain. If it’s going into a sewer you need to add a neutralizer to it. Mike
@@ThatTanklessGuy Hi Mike, as far as the condensate drain piping, got it, thanks! So I will definitely plan to install the condensation drain 3/4 C-PVC piping below the unit, as per your video.
What I was actually asking about here is if there is a need to add another condensation hose at the top of the unit, where the schedule 40, 2in PVC connects to the unit. Does that apply and is that necessary for the RUR 199 interior unit, when vertical venting? I will probably have 25 ft of straight vertical pipe going from the first floor to the roof.
Thanks,
Peter
Oh, there it is.
Dude I went up through the roof and I used the beevent continued it all the way down to the water heater what do you think
Hi Mike I just got the Rinnai RU199iN Condensing Tankless Gas Hot Water Heater. I was wondering can I tie in the PVC to my venting for my furnace if I do pvc
No No No it needs to go out separately at least 14” fro each other or another vent. Mike
@Mike’s Wood Shop thank you, sir, for the reply. Sorry if these are dumb questions, but when I remove the hot water tank can I run the schedule 40 pvc up to the roof where the exhaust from the hot water tank went.
You can use it as a sleeve don’t attach the tankless vent to it
HI mike, Love your channel.. Can you use the 3x5 condensing vent (uubink) on the new RSC199IN?
Yes you can
Can I ask why or what's the advantage of using the Ubink concentric vent pipe. Aren't they way bigger than the 2" pvc. I haven't installed my venting yet, but wondering why people don't use the pvc. It seems easier to get the vent out? Curious
Hello,
What about using 1 pipe. So concentric venting. My water heater is inside my house in small closet room that will vent through the ceiling into the attic and up through the house roof.
What pieces do I need to purchase? 1 concentric pipe all the way through? I think I have probably over 20 feet up
Is it okay to have the pvc vent pipe touch the drywall?
Where can I get part numbers for that consentric vent?
Thanks Mike. When do we need an expansion tank setup with a Rinnai tankless water heater?
You can put one on it wouldn’t hurt. Use a
ST10 the small Thermax tank.
Mike’s Wood Shop thanks Mike. However I want to understand why is it used , and what’s the risk if I don’t install an expansion tank. My rinnai instruction manual doesn’t say anything about an expansion tank, that’s why want to hear from your experience
@@abhinavgaur13 In general, I feel you only need a expansion tank with a tankless if you are using a recirculation loop and end up with a heated closed loop. Follow manufacturer and local codes though. Most cold water supplies have a check valve or backflow preventer that creates the closed water loop in your house. If system is filled with cold water, then heated, the pressures will rise quickly as the water tries to expand but has nowhere to go - common with hydronic heating and domestic water tanks... with a tankless, it is only heating water while a tap is open so you don't get the pressure buildup. When you add in a recirculation line you are heating water with taps closed. These are my thoughts.
@@sbitschy Thanks Steve. That's helpful. In my case, I think I will not install one then, because I have a very small home. The furthest line from water heater is 20 ft I guess as the heater is in a utility room right in the middle of the home.
looks like the appliance elbow for the 3/5 concentric hor. venting is slightly angled to preform for the 1/4" per ft. slope, am i correct or seeing things?
You are correct good eye
Can I vent intake in attic. Attic is vented both ends plus a attic fan.
I have a 1-storey house with a 2-car garage in Phoenix with a tile roof. The distance from the top of the Rinnai unit to the roof is about 15 feet. The Rinnai (RUR160in) will replace the old natural gas heated tank. The air in the garage will supply the intake air for combustion. There is an existing 3" B-Vent from the gas operated water tank that is being removed. I want to run the 2" Schedule 50 PVC up through the B-Vent. If there is need for stability, I could add a few screws along the way - it's not very far. The B-vent is already anchored to a stud. For example, I could add screws near the top at or just below the roof line and at the bottom at the garage ceiling where the B-Vent starts and maybe another in the middle. What is the argument against doing this? Thanks, Tom in Phoenix AZ
That would be perfect👍👍no screws just glue anchor the elbow before it goes up the B vent and use a 6”x2” fernco coupling to water seal between the old B vent roof flashing and the 2” PVC
@@ThatTanklessGuy I think I understand what you are saying. I sent you pictures at your aol email address if you want to see the old pipe, top to bottom. I should remove the old vent pipe on the roof, then insert the 6" x 2" fernco coupling on top of the old flashing. The diameter of the Type-B vent tube on the roof is 3.5". It's 3" coming off the top of the old water tank. Were you thinking the vent tube is 6"? Thank you very much for your help.
Hi Mike!
Thank you so much for all the info on the installation 👍
I just needed to ask you a specific question about the RU199i, the inside unit. When you run direct separate 2" lines, they should not be more than 65" in total length. I have 3 90s and 2 45s on the air intake pipe and 2 90s and 4 45s on the exhaust pipe. The total equivalent length is 46 ft for the air and 40 ft for the exhaust. I'm within the limit but do I have too many elbows, still?
Thank you very much!
Anyone to respond to this please.
Aren't we allowed the 65' total length of each pipe separately? So say 65' for fresh air and 65' for exhaust? Or am I incorrect
Yes, 65' each but I was asking about the total elbows allowed to install, if there is a limit, or you just add the equivalent length of them and just go up to 65' length?
Max vertical run would be ?
Can you use non direct for your intake air supply? My current unit, Eternal GU145S, is installed in a large attic space and uses my attic air supply for the intake. I would like to use my current 3" exhaust and just non direct my intake from the attic air supply. Can this setup be used for this Rinnai unit?
I should of watched the whole video before asking my question. Based on what you stated about using non direct intake air in a large garage space answers my question if a large attic space should be sufficient. Great video!!!
Hi Mike, for RUR199eN installed outdoors, how would I install venting?
No venting is needed for an outside unit
how much rise can I have while going up out a basement window?
Any plumbers out there who may be able to weigh in? I've got 1 plumber telling me a tankless won't provide enough volume to fill a bathtub, and another that says it'll have no trouble at all.
I'm in Wisconsin, USA ground temp about 40*F
Which unit would i need to get the highest gpm for residential? thanks!
Hey Mike, great video. One question, why can't I run my 2" PVC through my old metal exhaust pipe. You don't recommend to sleeve it, just wondered why. Thanks again.
I do say that I have other videos on it. As long as you sleeve it and hopefully it’s a straight run it would work.
Mike
@@ThatTanklessGuy Exactly, I hope it's a straight shot! I should probably put some type of support or clamp it to a rafter or something. Thought I might cut the pipe once I got into the attic and support or clamp it.
Take the vent out to the roof penetration and sleeves it through that
@@TheBuddylab Hate to sound dumb but what is the roof penetration?
Hey Mike, one more quick question... I have a 4" exhaust and intake for my furnace that runs right above where I will be putting my new water heater. Don't suppose I could put a T in those lines and hook into those???
Do the 2 inch escutcheon come with the heater
No they do not. Home DePot, Lowe’s or a plumbing supply will have them. You need them for 2” IPS. Mike
How can I talk to you about my installation
thank u! how much does the unit weigh?
80 lbs
👍
what pitch do i need from the 2 vents both pitch in ?
1/8 to 1/4 is good
Ty
So I'm guessing whenever you have horizontal run the 1/4 PITCH rule comes into place?
why not use basement air
What's code 21
@ 13:35 That's "big ass hole" not "big asshole". Just sayin'.
Omg I caught that as well 😂😂
Why are you yelling at me😭😭
Mike, how do I find your email address ?