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Heating coil as a preheat in DOAS with VRV

CS-v4 EAp2: Minimum Energy Performance
posted by Przemysław Rejczak on Mar 4, 2020, 12:00 pm

Dear Everyone

I am quite confused because I got a review comment recently where Reviewer suggests to exclude preheat coils from Baseline System 7. 

It is a project located in Poland...

Last reply: Tyler Thumma, Mar 25, 2020, 1:30 pm

LCA for a renovated building?

NC-v4 MRc1: Building life-cycle impact reduction
posted by Agata Mozer on Feb 14, 2020, 6:02 am

Can Option 4 LCA be selected for a project of an existing building which is being renovated and with substantial demolition works? Is it still allowed to use Option 4 if a bit more than 25% of...

Light reflection from the facade

NC-v4 SSc6: Light Pollution Reduction
posted by Agata Mozer on Feb 13, 2020, 5:16 am

Ligting engineer asked me if he should include light reflection from the facade in the ligthing simulation for Light trespass Option 2. Could anyone confirm this? Our project is in LZ2 and is a...

Last reply: Bill Swanson, Feb 13, 2020, 8:35 am

roof under ventilation ducts and glass overhang

NC-v4 SSc5: Heat Island Reduction
posted by Agata Mozer on Dec 12, 2019, 5:34 am

I have two questions regarding heat island reduction credit:

1. I would like to confirm if in LEEDv4...

Last reply: emily reese moody, Feb 13, 2020, 1:15 am

CO2 Monitoring- sensor level

NC-v4 EQp1: Minimum indoor air quality performance
posted by Przemysław Rejczak on Jan 31, 2020, 8:17 am

Dear Everyone,

I have a question regarding to Monitor carbon dioxide (CO2) concentrations within each thermal zone...

Last reply: David Hubka, Feb 1, 2020, 1:05 pm

Stairwell Lighting zone

NC-v4 EAp2: Minimum Energy Performance
posted by Agata Mozer on Jan 28, 2020, 8:21 am

According to ASHRAE 90.1, section „g. Stairwell Lighting – Lighting in stairwells shall have one or more control devices to automaticcly reduce lighting power in any one controlled zone...

Last reply: Waleed AlGhamdi, Jan 29, 2020, 8:14 pm

planters on terraces

NC-v4 WEp1: Outdoor water use reduction
posted by Agata Mozer on Dec 12, 2019, 12:40 pm

Can anyone confirm if planters located on the terraces should be included in the calculations for this credit?

Last reply: Allen Cornett, Jan 16, 2020, 4:43 pm

MR BPD&O Calculator v4.1

NC-v4.1 MRc2: Building product disclosure and optimization - environmental product declarations
posted by Agata Mozer on Apr 15, 2019, 7:50 am


I would like to replace the v4 credit with v4.1 equivalent and track the credit status via appropriate calculator. Could you tell me where can I find the right editable document?...

Last reply: Cynthia Kaplan, Jan 15, 2020, 3:02 pm

Extrapolate daylight results for similar floors

NC-v4 EQc7: Daylight
posted by Agnieszka Kaczmarek on Jan 2, 2020, 4:41 am

Illuminance simulations should be perform for all the regularly occupied spaces. What if I have 20-storeys building with same geometry and same layout? Simulating each floor seems pointless,...

Last reply: Hariharan P, Jan 3, 2020, 11:12 pm

Option 2 A Exterrior contamination prevention- software

CS-v4 EQc1: Enhanced indoor air quality strategies
posted by Przemysław Rejczak on Nov 13, 2019, 8:35 am

Dear everyone,

Could you please inform which is the most reasonable software to prepare CFD analysis to show Exterrior Contamination Prevention compliance?

There are no strict...

Last reply: Mohammad H Abbasi, Nov 22, 2019, 10:03 pm