[Equest-users] Multi-Family Corridor Baseline

Thu Jun 9 23:18:01 PDT 2016

If these associated residential spaces are heated only, then they let you
use system 9/10 (unit heater, they were called 10 and 11 I believed when
first introduced by addenda *dn* of ASHRAE 2007). For stairwells that's
often the case.

--
Julien Marrec, EBCP, BPI MFBA
Energy&Sustainability Engineer
T: +33 6 95 14 42 13

LinkedIn (en) : www.linkedin.com/in/julienmarrec
LinkedIn (fr) : www.linkedin.com/in/julienmarrec/fr
<http://www.linkedin.com/in/julienmarrec>

2016-06-10 5:17 GMT+02:00 Maria Karpman via Equest-users <
equest-users at lists.onebuilding.org>:

> The current version of EPA MFHR simulation guidelines is found at the link
> below, and requires modeling corridors, stairwells, etc. in multifamily
> buildings with baseline Systems 1/2 irrespective of their total area.
>
>
> https://www.energystar.gov/ia/partners/bldrs_lenders_raters/downloads/mfhr/ENERGY%20STAR%20MFHR%20Simulation%20Guidelines_Version_1%200_Rev03.pdf?ca60-bf37
> Here are some related abstracts.
>
>
>
> *DEFINITIONS *
>
>
>
> *common space**: *any spaces within a building that serves a function in
> support of the residential part of the building that is not part of a *dwelling
> unit*. This includes spaces used by residents, such as corridors, stairs,
> lobbies, laundry rooms, exercise rooms, residential recreation rooms,
> parking used exclusively by residents, building staff, and their guests.
> This also includes offices used by building management, administration or
> maintenance and all special use areas located in the building to serve and
> support the residents such as day-care facilities, gyms, dining halls, etc.
>
>
>
> *nonresidential**: *spaces in mixed-use buildings other than *residential
> *or *common space*, such as commercial space.
>
>
>
> *residential**: *spaces in buildings used primarily for living and
> sleeping. Residential spaces include, but are not limited to, *dwelling
> unit*s.
>
>
>
> *3. MODELING GUIDELINES*
>
>
>
> *…………………..*
>
>
>
> *3.8.2 *The Baseline and Proposed HVAC system shall be modeled as per
> Appendix G, and as clarified in the first note below Appendix G Table
> G3.1.1A, “…Residential building types include dormitory, hotel, motel, and
> multifamily.” Following this note, *common spaces *that are essential to
> the building’s residential function, including but not limited to corridors
> and stairwells, must be modeled with residential baseline HVAC system type
> (System 1 or 2 only) depending on the predominant fuel source in the
> building, except as allowed in 3.8.1.
>
> Appendix G exception G3.1.1(a) that allows the use of additional system
> types for non-predominant conditions if they total more than 20,000 ft2
> only applies to heating source, not space function. Baseline HVAC System
> Types 3-8 may not be used, except in appropriate *nonresidential *spaces
> that exceed 20,000 ft2.
>
>
>
> --
>
> *Maria Karpman *LEED AP, BEMP, CEM
>
> ________________
>
> Karpman Consulting
>
> www.karpmanconsulting.net
>
> Phone 860.430.1909
>
> 41C New London Turnpike
>
> Glastonbury, CT 06033
>
>
>
> *From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
> Behalf Of *Elizabeth Gillmor via Equest-users
> *Sent:* Thursday, June 09, 2016 9:25 PM
> *To:* Sunayana Jain
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Multi-Family Corridor Baseline
>
>
>
> In my experience LEED will accept a second baseline system type for the
> corridors, but then following appendix G, you would use a System type 7.  I
> would take the same interpretation for MFHR.
>
>
>
> You could probably make a case to do all residential systems, but with gas
> heating in the corridor, that would put you in a System Type 1 throughout,
> which would unnecessarily punish your dwelling units.
>
>
>
> Cheers,
>
> Elizabeth
>
>
>
>
> *Elizabeth Gillmor  **PE, BEMP, LC, LEED AP*
>
>
>
> *e n e r g e t i c s  **consulting engineers, llc*
>
> energetics-eng.com | 303.619.0091
>
>
>
> On Thu, Jun 9, 2016 at 1:41 PM, Sunayana Jain via Equest-users <
> equest-users at lists.onebuilding.org> wrote:
>
> I have 10 floors multi-family building. Units are served by packaged
> terminal heat pumps and corridors are pressurized and are served by RTUs
> (MAUs) with gas heat. Units are naturally ventilated. Total corridor area
> is greater than 20,000 SF.
>
>
>
> I wanted to know if residential systems (System 1 or System 2) should be
> applied for the corridors in the baseline as recommended by Multi-Family
> High Rise (MFHR) guideline? Would LEED also accept residential systems for
> corridors instead of non-residential systems?
>
>
>
> I have seen this discussion in the past but was curious to know the latest
> take on it.
>
>
>
> Thanks,
>
>
>
> Sunayana
>
>
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