Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Can this heater work on propane as well as natural gas?
Document: I'll update this in a couple month when I have a better idea of any propane consumption savings. Unfortunately, I've been told these units can not be converted to natural gas, so, if and when we ever get natural gas here, we will have to buy another heater.
I was really tired of my 3 year old 50 gallon electric tank not making through 1 and a half showers - we'd run out, especially in the colder months. Not to mention huge electric bills.In my effort to replace electric appliances with propane, the Rinnai was a natural choice. It wasn't tough to install (I have a background in the trades).
Easy to install with some knowledge of plumbing. Gas Company checked connections...all were fine. Good hot water heater. Amazon has so much variety, searching for a particular item is easy.
Our old water heater went after 17 years and we converted to this product. We had to upgrade our water pump and storage tank to insure sufficient flow (we have a shallow well). We had our handyman install it who happened to have a plumber working with him. The Amazon order suggestion was to buy valves but do not buy them, there are valves supplied with the heater,  I will have to return them.
I installed this unit to replace a 17 year old electric water heater a week ago and have been happy with it so far. The unit was pretty well packaged and delivered on time with all parts intact. It seems to be well-made and works as expected. I bought a bigger unit than I currently need, so it easily delivers plenty of hot water -- even with the cold incoming water I get from my well in Ohio in January.
Replaced our old 50 gal tank style heater last July when it it developed a tank leak. I wanted another tank style but couldn't find a tank model that would work with our horizontal wall exhaust vent. Boy, am I glad now. This tankless water heater installed easily using the same hole in the wall. We have a 2 bath house and the Rinnai provides pleanty of hot water for both showers and the dishwasher running at the same time. A DIY'r could install this heater.
As of this time still does not work expert looked at it still will not produce hot water. Thinking about putting old unit back in.
A coaxial pipe carries both exhaust and fresh air in a single unit. This prevents the unit from using air from inside the house to burn and cool down the exhaust gas. Most powered vent water heaters waste air from inside the house.
Took a gamble to buy this instead of a hot water tank.So far,It works well. I adjusted the inside switch in order to raise the water temperature from the factory set 120 degrees to 135 degrees. Only criticism is that it take some water flow before the heated water reaches the faucet. Some delay is due to location of faucet versus the Rinnai but part is due to the heat up time.Overall I am pleased and we will see how the unit holds up over time.
Installed propane unit in lake house, removed 40 gal. electric hwh. No problem with installation, endless hot water. SO far so god.
Answer: yes