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

Input:
Question: Which lead free valve kit is needed for the NR50-OD-LP 5.0 outdoor unit?
Document: One-day Amazon Prime shipping was awesome - delivered as promised. We have a luxury B&B; at our Winery and our Bosch unit was becoming unreliable for our guests. The Noritz was immediately installed  after getting a larger (for our installation) LP gas flare fitting. Upon hook-up, the Noritz fired up and began working right away.
Bosch  #250SXO reviews on the Internet are typically three on a scale of five, recommend avoiding it. Contrasting the Bosch with the new Noritz unit, the Noritz seems to have what we believe is a more &#34;normal/reasonable&#34; amount of electronics in its design.Old-time gas appliances with a pilot light and a simple thermocouple/gas valve are reliable beyond belief, but by design are less efficient.
It was awesome when I opened it, but the first installation note said &#34;Do not Install at elevations above 2000 ft.&#34; My elevation is 2500 ft, and I knew I had a problem. I called Tech support to see If I could fudge it somehow. They said the unit would throw constant &#34;Error code 90s&#34; at my elevation.
The Noritz workmanship and design otherwise appeared excellent.Admittedly, we were unfamiliar with Noritz but a local tankless installer highly recommended them as his most reliable/popular brand. The Japanese-made Noritz tankless water heaters are highly regarded globally and the company has been in business in Japan since 1951.They adopted the Noritz name in 1968 so they have been around a long time. Tankless technology has been around Asia and Europe for several decades and only recently come to the USA.
Since I didn't want to dig a 500 ft hole to install it, I reluctantly had to return it.
Recommend giving Noritz a try.
Answer: no