Example: 30XW-V/30XWHV and LEED® certiﬁcation
The LEED® (Leadership in Energy and Environmental Design) green building certiﬁcation programme is a preeminent programme to rate the design, construction and operation of green buildings with points assigned in seven credit categories: - Sustainable Sites (SS) - Water Efﬁciency (WE) - Energy & Atmosphere (EA) - Materials & Resources (MR) - Indoor Environmental Quality (IEQ) - Innovation in Design (ID) - Regional Priority (RP) There are a number of different LEED® products. Whilst the strategies and categories assessed remain the same, the point distribution varies to address different building types and application needs, for example according to New Construction, Schools, Core & Shell, Retail and Healthcare. All programmes now use the same point scale.
Overview of LEED for new construction and major renovations
Water efﬁciency (10 points) Regional priority (4 points) Sustainable site (25 points) Energy & atmosphere (35 points) HVAC contribution 26 of 35 points
Innovation & design process (6 points) Indoor environmental quality (15 points) HVAC contribution 6 of 15 points
Material & Resources (14 points)
110 possible LEED points
80-110 points Platinum 60-79 points Gold 50-59 points Silver 40-49 points Certiﬁed
The new 30XWHV units from Carrier can assist building owners to earn LEED® points in the Energy & Atmosphere (EA) credit category and help address the following prerequisites and credit requirements: EA prerequisite 3: Fundamental Refrigerant Management The 30XWHV does not use chloroﬂuorocarbon (CFC) refrigerants satisfying the prerequisite statement EA credit 1: Optimise energy performance (1 to 19 points) One component for this credit requires the energy cost reduction of the proposed building compared to ASHRAE 90.1-2007 minimum tables and beyond the performance level required to meet EA prerequisite 2. The 30XWHV is designed for efﬁcient part-load performance and therefore satisﬁes this LEED® credit. In addition, the Carrier HAP (Hourly Analysis Program) can be used in the energy analysis component of this credit. The HAP program can run analysis programs that comply with the modeling requirements for this credit and produce reports that are easily transferable to LEED® templates. EA credit 4: Enhanced refrigerant management (2 points) With this credit, LEED® awards systems that minimise the Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) of the system. The 30XWHV uses a reduced R134a charge and therefore contributes toward satisfying this credit under LEED®. Note: This section describes the prerequisites and credit requirements in LEED® for New Construction and is directly related to the 30XWHV. Other prerequisites and credit requirements are not directly and purely related to the air-conditioning unit itself, but more to the control of the complete HVAC system. i-Vu®, Carrier’s open control system, has features that can be valuable for: - EA prerequisite 1: Fundamental commissioning of energy management systems - EA credit 3: Enhanced commissioning (2 points) - EA credit 5: Measurements and veriﬁcation (3 points) Note: Products are not reviewed or certiﬁed under LEED®. LEED® credit requirements cover the performance of materials in aggregate, not the performance of individual products or brands. For more information on LEED®, visit: www.usgbc.org.
The majority of credits in LEED® rating systems are performance-based and achieving them is dependent on the impacts to the overall building. The contribution any product or system may make to the points achieved depends on how it impacts the entire building and its operations. Whilst the LEED® green building certiﬁcation programme does not certify products or services, the selection of products or service programmes is critical to obtaining LEED® certiﬁcation for a registered project because the right products or service programmes can help meet the goals of green construction and ongoing operation and maintenance. The choice of heating, v