Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Can I use it with a hot water input coming from a solar tank ?
Document: I hate running out of hot water! If you have a room mate, family member or a several people in your house.. you will understand where I am coming from. I had a room mate that would take a 20 minute hot shower and I'd end up with about 2 minutes of hot water, if any.If you're upgrading to tankless, I recommend this unit.
Rinnai, please fix this and you'll be rockstars.There is a smidgen of longer latency when you turn on the hot tap until when you get hot water, but it's hardly noticeable.Energy Usage:During these periods I lived in a 2 person household with 4 bedrooms, and I switched from a large tank heater to a large tankless heater (this one).
I had this model Rinnai installed in February 2013, so I've been using it for 5 months now.Usage:Usage is *almost* like when I had a tank water heater. There have been some minor annoyances. The biggest annoyance, and most reproducible, is when I shave. When I shave, I turn the hot water on, run the razor underneath, and turn it off again. Shave a section, water on, rinse razor, water off. Repeat.
Installation was a breeze and the unit came well packed and protected. I was a little concerned about it being able to supply adequate hot water and pressure since I am on a well but it has no issues. Takes about 40 sec for the water to get hot in my second floor shower but that was no different than my old tank style hot water heater. The unit is very quiet. I cant hear the fan standing right next to it. Couple of things Id like to point out.
To properly correct problem, I would have to redo plumbing system to use PEX home-run configuration verses hub-and-branch.
I must admit that I had some extremely small leaks at the bottom where I attached the water vales. Make sure you use plenty of plumbers tape here - apparently the first time I did not. Note that contrary to another review this unit DOES NOT require stainless piping exhaust but instead the not so expensive exhaust venting made specifically for this unit. My exhaust was right out the side wall so I purchased a couple small pieces for around $60.Once installed I was ready to give it a test run.
They cut and thread your pipe for free. The only problem was there were several trips made to the store as I took on one section of the run at a time. As long as you use the best piping dope (mine was some blue monster) and get the pipe tight you should not run into any problems as far as leaks.
Let's just say I spent another $350 for the pipings and other materials I needed for the install. That's a total of of $1350. If I save $120 a year in gas and it lasts 20 years well you do the math. In any event savings or no savings we are very happy and would never go back to a tank water heater.
I replaced my Noritz tankless with this Rinnai tankless model after finding out the parts are no longer available less than 4 years from installing it new from the box. The Rinnai unit works great! It is so quiet and efficient, my first set of water and natural gas bills arrived and it is actually saving me an additional $8 per month. Compared to when had a 50gal water tank unit, that's a savings of nearly $30 per month!
To be fair, I had my tank water heater temperature set at 145F. If your house suffers from far bedroom plumbing issues, then tankless water heat will only make the problem worse. My guess it the combination of lower temperature and heater startup is contributing to longer wait times. I could increase the RU98i temperature by changing a few dip-switches, but I don&#8217;t want to mess with flow rate.To mitigate problem, I have majority of closed on-demand recirculation system installed.
Answer: yes