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LEED FOR SCHOOLS RECOMMENDATIONS

Green schools are healthy for students, teachers and the environment. Built right, green schools are productive learning environments with ample natural light, high-quality acoustics and air that is safe to breathe. Trane is helping schools LEED the way. Below are Trane's recommendations and strategies to earn points towards LEED for Schools Certification using Packaged DX Large Rooftops Systems.

Section Title Credit # Intent of Credit # of Points Overall Credit Explanation/Strategy Trane Recommendations

28 HVAC Related Points

PACKAGED DX LARGE ROOFTOPS SYSTEMS

Water Efficiency Credit 1.2 Water Efficient Landscaping, No Potable Use or No Irrigation 1 Perform a soil/climate analysis to determine appropriate landscape types and design the landscape with indigenous plants to reduce or eliminate irrigation requirements. · Collect condensate water · Use TRACETM building energy and economic analysis software to estimate condensate volume and cooling tower make-up water requirement · Track water usage/cost with Tracer building management system and/or Tracer Energy Services software · Many Trane controllers are factory mounted & commissioned · Tracer building management system can collect data and help generate commissioning reports

Energy and Atmosphere

Prereq 1

Fundamental Commissioning of the Building Energy Systems Minimum Energy Performance

Required

In order to meet this prerequisite, owners are required to use qualified individuals to lead the commissioning process. Owners are encouraged to consider including water-using systems, building envelope systems and other systems in the scope of the commissioning plan, as appropriate. Design the building envelope, HVAC, lighting and other systems to maximize energy performance. The ASHRAE 90.1-2004 User's Manual contains worksheets that can be used to document compliance with this prerequisite. When reusing existing HVAC systems, inventory all equipment that uses CFC refrigerants and provide a replacement schedule for these refrigerants. For new buildings, specify new HVAC equipment that uses no CFC refrigerants. Design the building envelope and systems to maximize energy performance. Use a computer simulation model to assess the energy performance and identify the most cost-effective energy efficiency measures. Quantify energy performance as compared to a baseline building.

Energy and Atmosphere

Prereq 2

Required

· Most Trane products meet/exceed ASHRAE 90.1-2004 · Trane TRACE software can help model the building energy cost according to ASHRAE 90.1-2004

Energy and Atmosphere

Prereq 3

Fundamental Refrigerant Management

Required

· All Trane products meet this requirement

Energy and Atmosphere

Credit 1

Optimize Energy Performance (2 pt minimum)

2 to 10

· Use Trane TRACE software to model building energy cost and generate compliance report · Select high-efficiency equipment options · Use optimized control sequences (supply-air temp reset, ventilation optimization) and airside economizing · Use energy recovery · Use evaporative condensing · Many Trane controllers are factory mounted & commissioned · Tracer building management system can collect data and help generate commissioning reports · Tracer Energy Services software can monitor and store the actual energy use over time · HVAC system commissioning is part of Trane's comprehensive solutions offering · Tracer building management system includes an automatic, periodic commissioning feature for VAV terminals · Many Trane products can meet the requirements of this credit. To aid in performing the calculations, a spreadsheet is available at www.trane.com/green

Energy and Atmosphere

Credit 3

Enhanced Commissioning

1

Although it is preferable that the Commissioning Authority be contracted by the Owner, for the enhanced commissioning credit, the Commissioning Authority may also be contracted through the design firms or construction management firms not holding construction contracts. Design and operate the school without mechanical cooling and refrigeration equipment. Where mechanical cooling is used, utilize base building HVAC and refrigeration systems for the refrigeration cycle that minimizes direct impact on ozone depletion and global warming. Develop an M&V Plan to evaluate building and/or energy system performance. Characterize the building and/or energy systems through energy simulation or engineering analysis. Install the necessary metering equipment to measure energy use. Design ventilation systems to meet or exceed the minimum outdoor air ventilation rates as described in the ASHRAE standard. Balance the impacts of ventilation rates on energy use and indoor air quality to optimize for energy efficiency and occupant health. Prohibit smoking in schools.

Energy and Atmosphere

Credit 4

Enhanced Refrigerant Management

1

Energy and Atmosphere

Credit 5

Measurement & Verification

1

· Tracer building management system can log data and view performance trends over time · Tracer Energy Services software can monitor and store the actual energy use over time

Indoor Environmental Quality

Prereq 1

Minimum IAQ Performance

Required

· TRACE software can calculate required ventilation airflow according to ASHRAE 62.1-2004, Ventilation Rate Procedure (VRP) · Use VAV or hot gas reheat to keep space below 65% RH · Most Trane airside products meet the requirements of ASHRAE 62.1-2004 · Use Trane TraqTM dampers to accurately measure and control outdoor airflow for VAV systems · Use Tracer building management system to control to specific pressure differential requirement between spaces. · Use trending or Tracer Energy Services software to verify pressure differential between spaces and the exhaust airflow rates.

Indoor Environmental Quality

Prereq 2

Environmental Tobacco Smoke (ETS) Control

Required

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LEED FOR SCHOOLS RECOMMENDATIONS

Section Title Credit # Intent of Credit # of Points Overall Credit Explanation/Strategy Trane Recommendations

PACKAGED DX LARGE ROOFTOPS SYSTEMS

Indoor Environmental Quality Prereq 3 Minimum Acoustical Performance Required Design considerations include reducing noise from exterior to interior spaces, between spaces within the building, and within the classroom space. External to internal noise transmission can be reduced by orienting classrooms away from external noise sources and using thick and/or massive materials in walls and roofs. Also, windows should be well sealed and have adequate air gaps between sheets of glass. Install carbon dioxide and airflow measurement equipment and feed the information to the HVAC system and/ or Building Automation System (BAS) to trigger corrective action, if applicable. If such automatic controls are not feasible with the building systems, use the measurement equipment to trigger alarms that inform building operators or occupants of a possible deficiency in outdoor air delivery. For mechanically ventilated spaces: use heat recovery, where appropriate, to minimize the additional energy consumption associated with higher ventilation rates. · Use Trane Acoustics Program (TAP) to predict the sound pressure and provide improvement ideas to engineers · Most Trane products have tested sound data, in accordance with industry-defined standards

Indoor Environmental Quality

Credit 1

Outdoor Air Delivery Monitoring

1

· For the densely occupied spaces, use CO2 sensors for demand-controlled ventilation · For non-densely occupied spaces, use Trane Traq airflow-measuring dampers inthe dedicated OA unit to measure intake airflow

Indoor Environmental Quality

Credit 2

Increased Ventilation

1

· Use Tracer building management system to document ventilation performance over time · Use TRACE software to determine the impact of increased ventilation on equipment capacity and energy consumption · Consider using exhaust-air energy recovery to reduce impact of extra ventilation air · Use a MERV 8 filter at each return grille · Utilize Tracer building management system to help flush out building

Indoor Environmental Quality

Credit 3.1- 3.2

Construction IAQ 2 Management Plan, During Construction

Adopt an IAQ management plan to protect the HVAC system during construction, control pollutant sources and interrupt contamination pathways. Sequence the installation of materials to avoid contamination of absorptive materials such as insulation, carpeting, and ceiling tile and gypsum wallboard. Utilize MERV 13 filters as filtration media

Indoor Environmental Quality Indoor Environmental Quality Indoor Environmental Quality

Credit 5

Pollutant Source Control

1

· Utilize MERV 13 filters as filtration media

Credit 6.1 -6.2

Lighting and Thermal Comfort, Controllability Thermal Comfort, Design

2

Design the building and systems with comfort controls to allow adjustments to suit individual needs or those of groups in shared spaces.

· Use Trane products and the Tracer building management system to help provide comfort and lighting controls to the individual or multi-occupant spaces

Credit 7.1

1

Establish comfort criteria per ASHRAE Standard 55-2004 that support the desired quality and occupant satisfaction with building performance. In gymnasiums, if mechanical ventilation is not used, follow ASHRAE Standard 55-2004 requirements for naturally ventilated spaces. Design considerations include reducing noise from exterior to interior spaces between spaces within the building and within the classroom space. External to internal noise transmission can be reduced by orienting classrooms away from external noise sources and using thick and/or massive materials in walls and roofs. A complete guide to preventing mold and reducing the probability of it recurring can be found in the Humidity Control Design Guide for Commercial and Institutional Buildings, available from ASHRAE GREENGUARD. For exceptional performance above the requirement set by the LEED rating system, additional points can be gained here. Educate the project team members about green building design and construction and application of the LEED Rating System early in the life of the project. It is highly recommended that project teams coordinate closely with school administration and faculty where possible, to encourage ongoing relationships between high-performance features of the school and the students.

· Select dehumidification enhancements (such as VAV or hot-gas reheat) to lower space humidity and improve thermal comfort · Use Tracer building management system to provide morning warm-up and preoccupancy cool-down without comprising occupants comfort · Use Quiet Curb on IntelliPak and IntelliPak II · Use Trane Acoustics Program (TAP) to predict the sound pressure and provide improvement ideas to engineers · Most Trane products have tested sound data, in accordance with industry-defined standards

Indoor Environmental Quality

Credit 9

Enhanced Acoustical Performance

1 to 2

Indoor Environmental Quality

Credit 10

Mold Prevention

1

· Select dehumidification enhancements (such as VAV or hot-gas reheat) to lower space humidity levels

Innovation & Design

Credit 1

Innovation in Design LEED® Accredited Professional

1

· EarthWise design (low flow, low temperature, large delta T) in the water and air side will help reduce the amount of material required while reducing the energy consumption · Trane has the highest number of LEED APs in the HVAC industry

Credit 2 Innovation & Design Process

1

Credit 3 Innovation & Design Process

School as a Teaching Tool

1

· Utilize Tracer building management system to incorporate conditions monitoring with school curriculum. · Use 3D graphics to enrich the display of the contents and enhance learning

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