If we specify a new air handler that uses steam and chilled water from existing systems, do these systems need to comply with the CPG efficiency requirements? We are looking to use Option 1.
The air handler is a 5 HP VAV unit so it would just need a variable frequency drive, correct?
Thank you,
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
November 27, 2013 - 3:47 pm
I don't think the existing systems would need to comply with the equipment efficiency requirements (2.9).
The 5 HP VAV has to meet the criteria in 3.10. It is not just having a VFD. It requires that the control will result in fan motor demand of no more than 30% of design wattage at 50% of design flow.