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

Off-hours control, zone isolation

Default Avatar
Ricardo Sá
Director of Sustainability
Edifícios Saudáveis Consultores (503 910 767)
LEEDuser Basic Member
79 thumbs up

According to ASHRAE 90.1 (section 6.4.3.3.4), all HVAC systems serving zones that are intended to operate or be occupied non simultaneously, shall be divided into isolation areas and equipped with devices and controls to guarantee automatic isolation. Are hotel rooms considered zones that are intended to operate or be occupied non simultaneously? Is it necessary to foreseen automatic isolation devices to each room? Can you please clarify how does this requirement applies to hotels? Regards, Pedro

0
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 sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Tue, 05/12/2015 - 13:40

I don't think it does apply. Hotels usually have a system per room and there are not multiple zones on one system. This section is about installing isolation dampers for areas that operate differently than the other areas on a particular system.
Default Avatar
Ricardo Sá
Director of Sustainability
Edifícios Saudáveis Consultores (503 910 767)
LEEDuser Basic Member
79 thumbs up

Tue, 05/12/2015 - 15:03

Once again, thanks for your quick reply. Here in Europe, temperature control in typical hotel rooms is guaranteed by a fan-coil that can be isolated from the rest of the HVAC system (water valve) but ventilated by an AHU that serves several rooms (up to 100 or more). The question relates with ventilation: is it necessary to foreseen automatic isolation (air dampers) in each room or group of rooms?
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Tue, 05/12/2015 - 15:21

If they are connected then I think the answer is yes.

Add new comment

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