No, 90% of all lamps types in the entire must be included. Tenant spaces may not be excluded. Achieving this credit in this situation can be challenging.
Yes, all mercury-free lamps can be excluded from the purchasing plan. However, it might be a good idea to include a narrative explaining why all outdoor light fixtures have been excluded, so that the reviewer knows that you didn’t ignore or forget outdoor fixtures.
Mercury-free lamps (such as LEDs) do not need to be included in purchasing plan, and can only be included if they are more efficient than their mercury-containing counterparts If you would like to include mercury-free lamps in the purchasing plan, you must provide documentation confirming that those lamps are in fact more efficient than their mercury-containing counterparts. Therefore, if you are unable to obtain that documentation, it is best to not include mercury-free lamps in the purchasing plan.
Yes, lamps for task lighting should be included in the purchasing plan - unless they account for less than 10% of the total lamp building lamp inventory, then you can exclude them. Screw-based CFLs that meet NEMA guidelines may be excluded as well.
Yes, you still need to provide a purchasing plan to confirm that you have developed a plan for future lamp purchases that meet the credit requirements. If the project building’s currently installed lamps are already below 90 picograms per lumen-hour, you can just copy over the lamp inventory into the purchasing plan table in the credit form. You can adjust the purchasing plan further to get an even lower average mercury-content if desired.
It is not necessary to inventory every lamp installed in the project building. However in order to accurately determine which types and how many lamps should be listed in the purchasing plan, it is necessary to take inventory of at least 90% of the fixture types in the building (including hard-wired, portable, and task lighting). You will also need to inventory the number of lamps associated with each fixture type. Taking an inventory of fixtures will be less time-consuming than an inventory of every installed lamp.
It is rare for a building to have absolutely no mercury-containing lamps installed. However, if this is the case, submit a lamp inventory and manufacturer documentation confirming your claim. Don’t be surprised if your reviewer asks questions.
If a single AHU is supplying outside air to multiple zones through VAV boxes, outside air measurements need to be tested at the AHU level but not a the VAV boxes.
Outside air measurements need to be tested at the system level and so measurements would need to be taken at each AHU, not just the single supply fan.
If the systems do not meet the required outside air during the initial testing the following actions should be taken: