IECC 2012 High Performance HVAC
IECC 2012 High Performance HVAC
(OP)
I'm posting my question here because I have no idea where else to post it.
We're looking at the IECC 2012 requirements for mechanical equipment and have stumbled upon something interesting. In achieving the High Performance HVAC requirement, a 90% AFUE burner is required. This isn't a problem for residential, but I didn't think this type of high efficiency burner was available in a packaged rooftop unit.
My question is, are there any packaged rooftop units out there that do reach the 90% rating?
This seems strange to me, and looking at some big names (York, Trane, Carrier) don't have literature for a 90% efficient heater.
We're looking at the IECC 2012 requirements for mechanical equipment and have stumbled upon something interesting. In achieving the High Performance HVAC requirement, a 90% AFUE burner is required. This isn't a problem for residential, but I didn't think this type of high efficiency burner was available in a packaged rooftop unit.
My question is, are there any packaged rooftop units out there that do reach the 90% rating?
This seems strange to me, and looking at some big names (York, Trane, Carrier) don't have literature for a 90% efficient heater.





RE: IECC 2012 High Performance HVAC
RE: IECC 2012 High Performance HVAC
Table C406.2(4) is where you will find the 90% for heating. This is in IECC 2012. The standard table 403.2.3(4) of IECC 2012 shows the efficiency of 80%, which is what you would expect.
This is a glaring point when you are working with COMCheck. Very easy to see what is required when the Advanced HVAC option is selected.
RE: IECC 2012 High Performance HVAC