I am working on a project which is considering pursuing CI 2009 EAc3 Option B. I am wondering if continuous metering is required for this path or if spot metering would be acceptable. I know that continuous metering has been removed in the redline version of CI but I was of the opinion that spot metering would be more applicable to the calibrated simulation option (Option D).
Another point, on this project major changes are being made to the building's central plant (basically everything to do with the central cooling plant is being replaced), lighting and space layouts. Essentially everything is changing completely excep the building envelope. Is option B even applicable in this case? The design team is pushing for option B because they want to reduce costs and avoid doing a full calibrated model but it is my opinion that given the number of changes the "retrofit isolation" option isn't applicable.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
April 7, 2014 - 9:15 am
No metering of any kind is required under Option B or D of the IPMVP. Both submeters and spot measurements could be used under either option.
Sounds to me like Option B does not apply since you will be implementing energy saving strategies that have interactive effects. Under CI you are required to show some lighting savings so this end use alone can't be isolated as it impacts heat, cooling, fans, etc.