Forum Archive: Posts by: berlinesque

Following up on a question I posted a few days ago, about a standard gas (ProMax) water heater being used for both space (floor) heating and potable water supply to the bathroom in a small commercial space I rent…
I think I’ve convinced the owners that this set-up is not code-compliant (thanks to the helpful info I rec’d here!) and now they’re saying they may be willing to put a tankless unit in the bathroom, so the basement water heater would be used just for the floor heating system… Would this then be up to Code?

Is a tankless unit a good option for this scenario?… Small space only gets used a few hours a day, and only hot water use would be for washing hands and occasional cleaning.

MP, you seem to be the resident expert here on this topic — any thoughts/recommendations?

Thanks!!

I’ve read through old posts and I think this question has been addressed before, but I’m not sure if there’s a definitive answer to this particular question, so I’m asking again!
Is there any possible set-up that would make it legal in NYC to have a hydronic floor heating system and a bathroom sink for an office/medical space getting water from the same standard residential ProMax gas water heater?
All of the other units (residential) in my building are using boilers, but for my small office space on the ground floor they have a regular water heater hooked up instead. They’re telling me that to get the floor heating to work properly I need to keep the water temp around 140-150, but then it comes out scalding at the bathroom sink.
Beyond the potential safety/efficiency issues with this set-up, is it compliant with NYC codes?

Thanks for all input!