During the Performance Period

In the ASHRAE 62MZcalc spreadsheet, be sure to override the default occupancy with actual building occupancy.

Perform VRP calculations for all air handling units and applicable floor areas. Make sure that the floor area covered by VRP calculations matches up with the total

Compare measured flow with required levels of outdoor air for each ventilation zone. Calculate the required outdoor air levels by completing ventilation rate procedure (VRP) calculations using the provided ASHRAE 62MZCalcs spreadsheet for each air handling unit.

If your building automation system does not continuously measure outdoor airflow, you should still be able to measure airflow accurately by performing a duct traverse with a pitot tube. If the system’s configuration does not allow for a duct traverse (such as with curved ductwork or limited access), anemometer measures can be taken at each air handling unit.

Conduct airflow monitoring using manual instrumentation or a building automation system to document outdoor airflow rates. Gather data or take measurements for each air handling unit or ventilation zone; sampling is not permitted.

Conduct a visual inspection of outside air vents, dampers, and louvers and remove any obstructions that restrict outdoor air flow.

For All Options

Ongoing data collection and preventative maintenance will be no- or low-cost initiatives.

Implement a preventative maintenance program to maintain the operational efficiency of the irrigation system.

Where submetered irrigation water use data is required, note that the regional growing season, including the month of July, must be included in the data set.