See all forum discussions about NC-v4 EAp2
 Subscribe to new posts about NC-v4 EAp2 Post a new question aboutNC-v4 EAp2
See LEEDuser’s guidance on NC-v4 EAp2»
FAQs about EAp2 :

Do the required savings for this prerequisite (and credit) need to come only from building energy, or also process loads?

Our project doesn't have enough energy savings to earn the prerequisite. Can we get there by incorporating onsite renewables?

Our proposed design has insulation R-values that are below those prescribed by ASHRAE 90.1-2010. Can we still meet the prerequisite?

View answers »

Forum discussion

NC-v4 EAp2:Minimum energy performance

How to Model OA if the Outdoor unit selected is bigger than Min OA

Hi, 

 

WHat is the right way to model OA for LEED if Outdoor unit selected is bigger than what we sized for, for example for an RTU if the Min OA sized is 16,000 CFM but we selected Outdoor unit with 18000 CFM of OA, what is the right way to model it model it with 16,000 CFM or 18,000 CFM. We have 18,000 CFM on the Schedules.

 

TIA 

 

Rajat

1
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user cory.duggin
Cory Duggin
Senior Energy Wizard
TLC Engineering Solutions
LEEDuser Premium Member
44 thumbs up

Mon, 01/06/2025 - 16:32

Model it at the volume the units are scheduled to operate at based on the drawings.  I have had where units are sized larger like you describe, and we include a balance schedule to show one value is for sizing/capacity and the other for operation based on the design.  This covers units that are designed for future expansion also.

Fri, 01/10/2025 - 19:54

Thanks Cory

Add new comment

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