2016 Department of Energy National Energy Codes Conference



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2016 Department of Energy National Energy Codes Conference

  • 2016 Department of Energy National Energy Codes Conference

  • Building Energy Codes Program

  • AIA Provider #: I014

  • AIA Course #: EC16-M02

  • March 21, 2016




Basics of using the COMcheck software, reviewing generated compliance reports, and the latest and greatest new features.

  • Basics of using the COMcheck software, reviewing generated compliance reports, and the latest and greatest new features.







Can exchange files between desktop and web

  • Can exchange files between desktop and web

    • Log in to web
    • My Projects


Red

  • Red







Comments

  • Comments

  • Orientation (code dependent)

    • Projection Factor
  • Visible Transmittance

  • Exemptions/Allowances





ASHRAE 90.1 (Pre-2013) Normative Appendix C Methodology for Building Envelope Trade-Off Option

  • ASHRAE 90.1 (Pre-2013) Normative Appendix C Methodology for Building Envelope Trade-Off Option

    • 90.1-2007/2010
    • 2009/2012 IECC
  • ASHRAE 90.1-2013 Appendix C has limited performance method (EnergyPlus)

  • 2015 IECC Component Performance Alternative (Total UA)



New Construction:

  • New Construction:

    • Trade-off compliance method
    • Prescriptive – Oregon only
  • Addition

    • Trade-off compliance method
    • Prescriptive – Oregon only
  • Alteration

    • Prescriptive compliance


Mandatory requirements

  • Mandatory requirements

  • Interior/Exterior lighting power requirements

    • Complies if total connected power <= lighting power allowance




Basic information about the builder and project

  • Basic information about the builder and project

  • Area take-offs for exterior walls, fenestration, roof/ceiling, basement walls, floors, etc.

  • Insulation R-values, fenestration U-factors, etc.

  • Lighting fixture details

  • Heating and cooling system details

  • Service water heating details





Appropriate Code

  • Appropriate Code



New Construction

  • New Construction

  • Addition

  • Alteration



Projects involve changes to or replacement of

  • Projects involve changes to or replacement of

    • Existing building components that are part of building envelope
    • Lighting, heating, ventilating, air conditioning, and water-heating equipment
  • Specify only those envelope components, lighting fixtures, or mechanical systems/equipment that will exist upon completion of the project

  • Alteration detail dialogs

    • Specify exemptions if applicable
    • Additional qualifications may be required (e.g., Window/wall ratio)
  • Compliance shown as Pass/Fail for Envelope and Lighting



Efficiency Options

  • Efficiency Options

    • High performance power (2012/2015)
    • Reduced lighting power (2012/2015)
    • On-site renewable energy (2012/2015)
    • High performance SWH (2015)
    • Enhanced interior lighting controls (2015)
    • Dedicated outdoor air system (2015)


Optional

  • Optional

  • Sections

    • Title/Site/Permit
    • Owner/Agent
    • Designer/Contractor
  • Included on report



Primarily impacts envelope compliance

  • Primarily impacts envelope compliance

  • Whole building types that describe the envelope (separating conditioned and unconditioned spaces)

  • Space conditioning type

    • Nonresidential
    • Residential
    • Semiheated (no mechanical cooling) – 90.1 only


Method determines lighting power density and allowances

  • Method determines lighting power density and allowances

  • Area category allows for more detailed space representation



Selected method determines lighting power densities in interior lighting and exterior lighting screens

  • Selected method determines lighting power densities in interior lighting and exterior lighting screens

    • based on code, method, and applications selected on the Project screen


Zone and area type determine:

  • Zone and area type determine:

    • Lighting power density
    • Units
    • Tradability


Common applications where ‘unused’ allowable power can be traded where needed (e.g., driveways and entry ways)

  • Common applications where ‘unused’ allowable power can be traded where needed (e.g., driveways and entry ways)

  • Based on length or area of application then summed



Less common applications that cannot be traded, “use it or lose it” (e.g., building façade lighting, ATM stations)

    • Less common applications that cannot be traded, “use it or lose it” (e.g., building façade lighting, ATM stations)


Don’t have to use every assembly type

  • Don’t have to use every assembly type

  • Can group “like” components

  • Gross area (except slab-on-grade)

  • Use “Other” assembly as needed



NFRC site-built certified product

  • NFRC site-built certified product

  • Performance evaluated (per NFRC guidelines)

  • Energy code defaults



Menu View->Glazing Requirements

  • Menu View->Glazing Requirements



Cavity R-value – used for insulation placed between structural members

  • Cavity R-value – used for insulation placed between structural members

  • Continuous R-value – used for insulation that is continuous across the structure (e.g., rigid insulation)

  • After you’ve entered building components, look at compliance result

    • Look for fields with red text
    • If TBD, look for missing data




Select space then Add Fixture button or Fixture Library

  • Select space then Add Fixture button or Fixture Library

  • Fixture library preserves frequently used fixtures for future use

  • Allowed/Proposed wattage balance maintained



Linear fluorescent

  • Linear fluorescent

  • Compact fluorescent

  • HID

  • Incandescent

  • Halogen

  • Track lighting

  • LED

  • Induction



Fixture wattage (helpful hint)

  • Fixture wattage (helpful hint)

    • In desktop, you can right click in fixture wattage to insert a default wattage value (not available for every fixture, however)
  • Fixture ID is optional

    • Can associate fixture with lighting fixture schedule
  • Fixture Description is optional

    • Can help keep track of fixtures in the list, avoid errors and oversights, and facilitate plan review and inspections


Options menu

  • Options menu

  • Exemptions

    • Power for exempt fixtures is omitted from the proposed wattage
  • Allowances

    • Allowed wattage for building increased by allowable amount


Include ALL fixtures (both exempt and non-exempt) in the project

  • Include ALL fixtures (both exempt and non-exempt) in the project

    • Helps clarify where exemptions have been taken and can streamline plan review and inspection


Based on code selected

  • Based on code selected

  • Mandatory requirements

  • Exemptions



Lighting applications entered similar to interior lighting

  • Lighting applications entered similar to interior lighting

  • Pay attention to tradable versus non-tradable criteria.



Limited means to determine compliance

  • Limited means to determine compliance

  • Enter characteristics of

    • HVAC system
    • Plant
    • Water heating
  • Characteristics you select determine which requirements apply



Example of a typical duct furnace and split system

  • Example of a typical duct furnace and split system



If multiple different HVAC systems and/or Plant components are used within a single building

  • If multiple different HVAC systems and/or Plant components are used within a single building

    • Select HVAC System or Plant button multiple times to enter more than one system
  • If multiple identical systems are used within a single building

    • Describe them once and use the quantity fields to indicate # present


Selection of checkboxes determines which water heating requirements apply to your building

  • Selection of checkboxes determines which water heating requirements apply to your building

  • If multiple different water heating systems are present

    • Select Water Heating button multiple times to enter more than one component
  • If multiple identical (or nearly identical) systems are present

    • Describe them once and use the quantity fields to indicate # present


Water heater type

  • Water heater type

    • Storage water heaters
      • heat and store water within the water heater for delivery on demand and
      • have input rating < 4,000 Btu/hour per gallon of stored water
    • Instantaneous water heaters
      • have an input rating ≥ 4,000 Btu/hour per gallon of stored water
      • can be electric, gas, or oil


Assists with fan power system limitations requirement

  • Assists with fan power system limitations requirement

  • Used to define and determine compliance of each fan system

  • Once defined on Fan Systems screen, you assign them to applicable mechanical system on Mechanical screen

  • Motor nameplate HP and brake HP





Ensure user is aware of applicable mandatory requirements and addresses each in the software

  • Ensure user is aware of applicable mandatory requirements and addresses each in the software

  • Provide better documentation for code officials



For each requirement, the user

  • For each requirement, the user

    • Certifies that a code requirement is
      • Met
      • Exempt
      • or does not apply
    • Notes how compliance for applicable requirements are documented
  • This information is shown on the report in the “Comments/ Assumptions” column of the Inspection Checklist



File View / Print Report

  • File View / Print Report

  • Choices, choose any or all

    • Envelope Compliance Certificate
    • Interior Lighting Compliance Certificate
    • Exterior Lighting Compliance Certificate
    • Mechanical Compliance Certificate
  • First pages are the Compliance Certificate

  • Follow-on pages are the Inspection Checklists by phase of inspection

    • Plan Review
    • Footing/Foundation
    • Rough-in
    • Final


















Compliance software

  • Compliance software

  • Compliance checklists

  • Technical support

  • Code notes

  • Publications

  • Resource guides

  • Training materials www.energycodes.gov













































Pam Cole

  • Pam Cole

  • pam.cole@pnnl.gov

  • Bob Schultz

  • robert.schultz@pnnl.gov

  • Building Energy Codes Program

  • www.energycodes.gov

  • BECP help desk

  • http://www.energycodes.gov/resource-center/help-desk




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