See all forum discussions about NC-2009 EAp2

Subscribe to new posts about NC-2009 EAp2 Post a new question aboutNC-2009 EAp2

See LEEDuser’s guidance on NC-2009 EAp2»

FAQs about EAp2 :

Can the Passive House Planning Package (PHPP) be used to energy model for LEED?

Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

Our project has a diesel backup generator. Should we include it in our energy model?

Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

Can SHGC be higher in the proposed than in the baseline model?

Our process load is higher than 25%. Do we have to justify that?

Do I need to justify the electrical and fuel rates I am using in my model?

Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements?

The project is built on a site with existing exterior lighting installed. How should this be accounted for?

Can mezzanines open to floors below be excluded from the energy model?

How do I provide a zip code for an international location?

For a project outside the U.S., how do I determine the climate zone?

For a project outside the U.S., how do I determine the Target Finder score?

Do hotel rooms need automatic light shut-off control?

How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?

View answers »

Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Level of detail (cfm) with Trane Trace for LEED -S & L buildings

Maria Spastri

Sustainability Consultant

AECOM

LEEDuser Basic Member

0 thumbs up

Project location :

March 23, 2017

Hi all, For the people who have submitted for LEED (v3) using Trane Trace: To what level of detail do you model the heating and cooling cfm and exhaust cfm on room/zone level for large buildings? Ex. when you have a building with 50 rooms vs. a building with 1700 rooms, do you set the airflows set 'to be calculated', or do you input all the cfm/ach/other per design in all rooms, indifferent of the size of the building? (system capacities, room setpoints, VAV % set per design). Let me know if you'd need more information. Thank you, Maria

Post a reply

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Fri, 03/24/2017 - 13:18

I can't speak for the Trace modelers but for LEED you simply follow the guidance in Table G3.1-7 when creating your thermal blocks. The proposed system should not be auto-sized as they are required to be based on the design G3.1-1 Proposed (a).

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.