@Javier, this might have been a one and a thousand chance that it happened to you while using the facility services. I speak as the tech who was hired by Mr Gill recently to have all 4 Rinnai RUC98's tankless cleaned, flushed and serviced. I can personally tell you theirs no issue when it comes to hot water. @Laura, it was my pleasure servicing your establishment.
My night shift accidentally turned off the water heaters last night. They are on now. We have 4 tankless hot water heaters set at 120F.
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