2008 Nonresidential Energy Plan Review Checklist Guide: For Alterations (Prescriptive Approach)

Transcription

1 2008 Nonresidential Energy Plan Review Checklist Guide: For Alterations (Prescriptive Approach) CALIFORNIA ENERGY COMMISSION NOTE: This Guide will only discuss the Plan Review process for alterations to Nonresidential buildings and the applicable Prescriptive Approach requirements. If you have questions regarding alterations to residential buildings and the Performance Approach, please contact the Energy Standards Hotline: Energy Standards Hotline at: Fax: The Plans Examiner only needs to verify compliance for the altered building component(s). DEFINITIONS: Alteration 101(b) An alteration is any change to a building s water heating system, space-conditioning system, indoor lighting system, outdoor lighting system, sign, or envelope that is not an addition. Some examples of an alteration include: Adding or replacing skylights or windows; Adding or replacing HVAC equipment and/or ducting; Adding or replacing water heater equipment and/or piping; Adding or replacing hardwired lighting; and A reroof. Repair 101(b) A repair is the reconstruction or renewal of any part of an existing building for the purpose of its maintenance. Repairs to Nonresidential buildings shall not increase the preexisting energy consumption of the repaired component, system, or equipment; otherwise it is considered to be an alteration. For example, if a broken pane of glass in a double pane window is replaced, the new window pane shall have the same or better U-factor and SHGC values of the existing window; if not, the window pane would have to meet the window efficiency requirements for alterations. 1 Copyright 2009 California Energy Commission, All Rights Reserved

2 GENERAL INFORMATION: Before verifying compliance for the altered building component, the Plans Examiner shall verify that the following general information on the applicable Certificate(s) of Compliance (the 1C Forms): 1. DATE: The Plans Examiner shall verify the date on the 1C form(s). If the plans were revised after the date, it is likely that the energy compliance documentation will need to be re-submitted to reflect the altered design. The Plans Examiner will determine whether or not the revisions to the plans would require re-submittal of the energy compliance documentation. 2. BUILDING FLOOR AREA (CONDITIONED AND UNCONDITIONED): For Indoor Lighting alterations, the Plans Examiner shall verify that the building floor areas (in square feet) of both conditioned and unconditioned space on the Certificate of Compliance match the building floor area values specified on the plans. 3. CLIMATE ZONE: The Plans Examiner shall verify the Climate Zone listed on the Certificate of Compliance is correct. To verify Climate Zone by zip code or city go to the Energy Commission's website at: or call the Energy Standards Hotline at The energy compliance documentation shall be re-submitted to determine compliance with the appropriate Climate Zone if the Climate Zone is incorrect or not listed on the Certificate of Compliance. 4. BUILDING TYPE: The Plans Examiner shall verify that all applicable building types on the Certificate of Compliance match the building type(s) specified on the plans: Nonresidential, High-rise Residential, and Hotel/Motel. The requirements for indoor lighting and the envelope are different for each building type. 5. PHASE OF CONSTRUCTION: The Plans Examiner shall verify that the ALTERATION box is checked for any tenant improvement and/or alteration that is not an addition. 2 Copyright 2009 California Energy Commission, All Rights Reserved

3 6. FRONT ORIENTATION OF THE BUILDING: For Envelope alterations where fenestration will be added, the Plans Examiner shall verify that the front orientation listed on the Certificate of Compliance accurately reflects how the existing building is situated on the lot, according to the plans. The Front Orientation is listed in degrees from North clockwise to East, and this should be checked against the North azimuth symbol on the plans. FIELD INSPECTION ENERGY CHECKLIST: New for the 2008 Certificates of Compliance is the Field Inspection Energy Checklist (Energy Checklist). The Documentation Author is responsible for completing the Field Inspection Energy Checklist. Only the energy efficiency values and features of the altered building component shall be identified on the Energy Checklist. This Energy Checklist will then be used by the Field Inspector during each applicable stage of inspection to verify compliance with the Energy Standards. ENVELOPE Alterations Is the ENV-1C signed by both the Designer and the Documentation Author? (a)1 Principle Designer s Declaration Statement For alterations, the individual who applies for the permit shall sign as the Principal Designer; the General Contractor or Architect. The Principal Designer is also responsible for the accuracy of the energy compliance documentation, even if the actual work is delegated to someone else (i.e. the Documentation Author described below). The Business and Professions Code governs who is qualified to accept responsibility for the building design and who can sign this statement. The person s telephone number is provided to facilitate response to any questions that may arise. Documentation Author s Declaration Statement The Documentation Author is the person who prepared the energy compliance documentation and shall sign this Declaration Statement. The Documentation Author s signature declares that the energy compliance documentation is accurate and complete. The person s telephone number is provided to facilitate response to any questions that may arise. A Documentation Author may have additional 3 Copyright 2009 California Energy Commission, All Rights Reserved

4 certifications, such as an Energy Analyst or a Certified Energy Plans Examiner, and shall enter their certification number in the EA# or CEPE# box. Both the Principal Designer (General Contractor or Architect) and Documentation Author shall sign the ENV-1C. If the ENV-1C is not signed by both the Principal Designer and the Documentation Author, the Plans Examiner shall request that both signatures be provided on the form prior to approval for a building permit. Are all appropriate Acceptance Tests identified on the ENV-1C? (a)2A When fenestration (windows or skylights) will be added or replaced and site-built fenestration will be installed, the Plans Examiner shall verify that all newly installed site-built fenestration products and applicable Acceptance Test are identified on Page 3 of the ENV-1C: ENV-2A: Fenestration Acceptance Applies to added or replaced site-built fenestration products If all site-built fenestration products are not specified on the ENV-1C, the Plans Examiner shall request that the Documentation Author or Designer resubmit the ENV-1C before issuing a Building Permit. The Plans Examiner should also make a special note (highlight, circle in red pen, use a stamp, include a note block, etc.) on the ENV-1C or building plans to inform the Inspector that the ENV-2A Form shall be collected while conducting the Final Inspection. Were all applicable forms submitted? (a)2C ENV-1C: All submittals ENV-2C: Submit when the Envelope Component Approach is used ENV-3C: Submit when the Overall Envelope TDV Approach is used ENV-4C: Submit when skylights are required [Spaces with lighting systems installed for the first time in Climate Zones 2 through 15 that meet the criteria of Section 143(c)]. 4 Copyright 2009 California Energy Commission, All Rights Reserved

5 To simplify enforcement, the Energy Commission recommends that all applicable compliance forms (ENV- 2C, ENV-3C, etc.) be printed on the plans (electronically incorporated onto the plans) along with the Certificate of Compliance. Having all of the energy forms on the plans simplifies the Plan Review process and helps the Inspector identify the energy features of the altered building component(s) that must be verified in the field. The Plans Examiner shall verify that all applicable forms have been submitted along with the structure/architecture plans before issuing a building permit. Is the Mandatory Measures note block on the plans? (a)2B The Envelope mandatory measures are minimum energy efficiency requirements that apply to all envelope alterations. These mandatory measures ensure a minimum level of energy performance for all alterations to obtain energy efficiency. This helps the Builder, Plans Examiner, and Inspector identify the minimum mandatory measure that need to be met. The Plans Examiner shall verify that the Envelope mandatory measures are specified on the plans. The Documentation Author may use whatever format is most appropriate for specifying the mandatory measures in the plan set. In general, this will take the form of a note block located on the structure/architecture plans or next to the Envelope compliance forms, possibly with cross-references to other locations in the plans where measures are specified. Does the Energy Compliance Documentation match the plans? (a)2B Section of the Administrative Regulations (Title 24, Part 1) mandates that the building characteristics modeled to demonstrate compliance with the Energy Standards shall be specified on the plans. The Plans Examiner shall verify that the efficiency values and features of the altered envelope component(s) from the Envelope forms are specified on the appropriate sections of the structure/architecture plans. The Plans Examiner shall also verify that the efficiency values and features of the altered envelope component(s) on the Envelope forms meet the prescriptive Envelope Component Approach and mandatory requirements detailed in this section of the Guide; the Overall Envelope TDV Energy Approach will not be discussed in this Guide. For more information regarding the Overall Envelope TDV Energy Approach, please reference Chapter 3 of the 2008 Nonresidential Compliance Manual at: 5 Copyright 2009 California Energy Commission, All Rights Reserved

6 Insulation for walls, ceilings, and floors (from Reference Joint Appendix JA4) 149(b)1A, 143(a) When the exterior envelope (wall, ceiling, or floor) will be altered, the Plans Examiner shall verify that the insulation values identified on Page 2 of the ENV-2C meet or exceed the following requirements: When a wall, ceiling, or floor will be replaced, the altered assembly shall meet the prescriptive insulation requirements of 143(a): a. Nonresidential Buildings (including Relocatable Schools) Standards Table 143-A. b. High-Rise Residential and guest rooms of Hotel/Motel Buildings Standards Table 143-B. c. Relocatable Schools certified in all Climate Zones Standards Table 143-C. Alterations that involve opening the framed cavity a wall, ceiling, or floor are considered to be repairs, and shall not increase the preexisting energy consumption of the existing assembly: a. When the opened cavity of an assembly is not insulated, the cavity is not required to be insulated (the Energy Commission recommends installing insulation to obtain greater energy efficiency). b. When the opened cavity is insulated and that insulation is removed for construction, the cavity shall be insulated with an R-value equal to or greater than the removed insulation. NOTE: Alterations to low-sloped roofs that will open the framed cavity and expose the roof deck or recover boards shall meet the requirements for Low-Sloped Roof Alterations detailed below. Low-Sloped Roof Alterations 149(b)1Biv When the roof deck or recover boards will be exposed in a low-sloped roof, the Plans Examiner shall verify that the insulation values or assembly U-factor (of the exposed roofing area only) identified on page 2 of the ENV-2C meets either: The minimum continuous insulation R-value requirements* in Standards Table 149-A on the next page; or The maximum assembly U-factor requirements in Standards Table 149-A on the next page. If the assembly U-factor of the exposed roofing area is not equal to or less than the maximum U-factor allowed in Standards Table 149-A, then continuous insulation shall be installed with an R-value equal to or greater than the minimum R-value required in Standards Table 149-A. * Roofing areas with R-7 insulation or greater are exempt from this requirement. Additional exceptions are listed on the next page. 6 Copyright 2009 California Energy Commission, All Rights Reserved

7 Standards Table 149-A Climate Zone Continuous Insulation R-value Nonresidential U-factor High-rise Residential and Guest Rooms of Hotel/Motel Buildings Continuous Insulation R-value U-factor 1 R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R Exceptions: Alterations where the roof deck or recover boards will be exposed in a low-sloped roof are exempt from the requirements in Standards Table 149-A if one of the following criteria is met: No additional insulation is required if the roof is already insulated to a minimum level of R-7. If mechanical equipment is located on the roof and it will not be disconnected and lifted as part of the roof replacement, insulation added may be limited to the maximum insulation thickness that will allow a height of 8 inches (20 cm) from the roof membrane surface to the top of the base flashing. If adding the required insulation will reduce the base flashing height to less than 8 inches (20 cm) at penthouse or parapet walls, the insulation added may be limited to the maximum insulation thickness that will allow a height of 8 inches (20 cm) from the roof membrane surface to the top of the base flashing, provided that the following criteria has been met: 7 Copyright 2009 California Energy Commission, All Rights Reserved

8 a. The penthouse or parapet walls are finished with an exterior cladding material other than the roofing covering membrane material; and b. The penthouse or parapet walls have exterior cladding material that must be removed to install the new roof covering membrane to maintain a base flashing height of 8 inches (203 mm); and c. For nonresidential buildings, the ratio of the replaced roof area to the linear dimension of affected penthouse or parapet walls shall be less than 25 square feet per linear foot for climate zones 2 and 10 through 16, and less than 100 square feet per linear foot for climate zones 1 and 3 through 9; and d. For high-rise residential buildings, hotels or motels, the ratio of the replaced roof area to the linear dimension of affected penthouse or parapet walls shall be less than 25 square feet per linear foot for all climate zones. Tapered insulation may be used which has a thermal resistance less than that prescribed in Standards Table 149-A at the drains and other low points, provided that the insulation thickness is increased at high points, so that the average thermal resistance equals or exceeds the level specified in Standards Table 149-A. Number of windows, window area and their orientation 149(b)1A, 143(a) Increasing Fenestration Area When windows and/or skylights (fenestration) will be added, the Plans Examiner shall verify that the window areas identified on the Window/Skylight Area Calculations on Page 3 or Page 4 of the ENV-2C meet the following prescriptive Envelope requirements: Windows shall: a. Have a west-facing area no greater than 40% of the gross west-facing exterior wall area, or 6 feet times the west-facing display perimeter, whichever is greater; and Verification: The Plans Examiner shall verify that Row D is the same value (ft 2 ) or less than Row C on Page 3 of the ENV-2C. b. Have a total area no greater than 40% of the gross exterior wall area, or 6 feet times the display perimeter, whichever is greater. Verification: The Plans Examiner shall verify that Row H is the same value (ft 2 ) or less than Row G on Page 3 of the ENV-2C. NOTE: Windows in demising walls are not included in calculating the west-facing and total window areas, and demising walls are not included in calculating the gross exterior wall area or display perimeter. Skylights shall: a. Have an area no greater than 5% of the gross exterior roof area. Verification: The Plans Examiner shall verify that Row D is the same value (%) or less than Row A on Page 4 of the ENV-2C. 8 Copyright 2009 California Energy Commission, All Rights Reserved

9 EXCEPTION: Atria over 55 feet high shall have a skylight area no greater than 10% of the gross exterior roof area. Verification: The Plans Examiner shall verify that Row D is the same value (%) or less than Row B on Page 4 of the ENV-2C. NOTE: Alterations that only replace windows or skylights are exempt from the prescriptive fenestration area requirements detailed above. Exceptions: The following alterations are exempt from the fenestration area requirements in high-rise residential and hotel/motel buildings: When 150 ft 2 of window area or less is added, the west-facing and total area requirements do not apply. When 50 ft 2 or less of skylights is added, the skylight area requirements do not apply. NOTE: When meeting the above exception(s), the newly added fenestration shall also meet the following requirements: a. Added windows shall meet the RSHG (SHGC) requirements in Standards Table 143-B for the 30-40% Window to Wall Ratio (WWR); and b. Added skylights shall meet the SHGC requirements in Standards Table 143-B for the 2.1 to 5% skylight area. U-Factor and SHGC values for Fenestration 149(b)1A, 143(a) When fenestration will be added or replaced, the Plans Examiner shall verify that the U-factor and Solar Heat Gain Coefficient (SHGC) values of the altered windows or skylights identified on page 3 of the ENV- 2C meet the prescriptive U-factor and SHGC requirements in Standards Table 143-A through 143-B: a. Standards Table 143-A shall be used for Nonresidential buildings (including relocatable schools). b. Standards Table 143-B shall be used for High-Rise Residential buildings and guest rooms of Hotel/Motel buildings. c. Standards Table 143-C shall be used for Relocatable Schools certified in all climate zones. 9 Copyright 2009 California Energy Commission, All Rights Reserved

10 The Plans Examiner shall verify that the window efficiency values identified in the Fenestration Proposed column under Window Details on Page 3 of the ENV-2C are equal to or less than the window efficiency values identified in the Fenestration Allowed column from Standards Table 143-A, B, or C. NOTE: Alterations that only replace windows or skylights are considered to be a repair and are exempt from the prescriptive fenestration efficiency requirements detailed above. Replaced windows or skylights shall have efficiency values (U-factor and SHGC) equal to or less than the existing fenestration that was replaced. Exceptions: The following alterations are exempt from the prescriptive Solar Heat Gain Coefficient (SHGC) requirements: When less than 150 ft 2 of an entire building s fenestration is replaced; or When 50 ft 2 of less of fenestration area is added. Overhangs 149(b)1A, 143(a)5C When a reduced SHGC value for newly installed windows is calculated with overhangs, the Plans Examiners shall verify that the following dimensions identified on Page 3 of the ENV-2C are specified in a window schedule or in the floor plan on the structural/architecture plans: Length distance overhang extends out from the window. Height distance from the top of the window to the overhang. Left Extension distance the overhang extends past the left side of the window. Right Extension distance the overhang extends past the right side of the window. NOTE: Skylights cannot use overhangs to calculate a reduced SHGC value.. Cool Roof Values (Solar Reflectance and Thermal Emittance) 149(b)1B When more than 50% of the exterior surface of the roof or more than 2,000 ft 2 of roof will be replaced, whichever is less, the altered exterior surface area shall meet the following requirements: For alterations to steep-sloped roofs (rise to run greater than 2:12): i. Nonresidential buildings in climate zones 2 through 16 with a roofing density less than 5 pounds per square foot shall have a minimum 3-year aged solar reflectance of 0.20 and a minimum thermal emittance of 0.75, or a minimum SRI of Copyright 2009 California Energy Commission, All Rights Reserved

11 ii. Nonresidential buildings in ALL climate zones (1 through 16) with a roofing density of 5 pounds per square foot or more shall have a 3-year aged solar reflectance of 0.15 and a minimum thermal emittance of 0.75, or a minimum SRI of 10. For alterations to low-sloped roofs (rise to run of 2:12 or less): i. Nonresidential buildings in climate zones 2 through 15 shall have a minimum 3-year aged solar reflectance of 0.55 and a minimum thermal emittance of 0.75, or a minimum SRI of 64. ii. High-rise residential buildings and Hotels and Motels in climate zones 10, 11, and 13 through 15 shall have a minimum 3-year aged solar reflectance of 0.55 and a minimum thermal emittance of 0.75, or a minimum SRI of 64. When a roof alteration requires a cool roof, the Plans Examiner shall verify that the solar reflectance and thermal emittance values or Solar Reflectance Index (SRI) value identified on Page 1 of the ENV-2C meets or exceeds the prescriptive requirements described above. Exceptions: Exception 1 to 149(b)1B: Roof recoverings are not required to meet the prescriptive cool roof requirements when all of the following criteria are met: The existing roof has a rock or gravel surface; and The new roof has a rock or gravel surface; and There is no removal of existing layers of roof coverings of more than 50% of the roof or more than 2,000 ft 2 of roof, whichever is less; and There is no recoating with a liquid applied coating; and There is no installation of a recover board, rigid insulation or other rigid, smooth substrate to separate and protect the new roof recovering from the existing roof. Exception 2 to 149(b)1B: The Overall Envelope TDV Energy Approach may be used when the new/altered roofing product does not meet the prescriptive cool roof requirements (detailed on previous page). The standard building values shall be based on the higher roof/ceiling insulation value of the following: For low-sloped roofs, the insulation values specified in Standards Table 149-A; or For steep-sloped roofs, the insulation values specified in Section 143(a); or The existing installed insulation value. For additional information regarding the Overall Envelope TDV Energy Approach, please refer to Section 3.7 of the 2008 Nonresidential Compliance Manual at: 11 Copyright 2009 California Energy Commission, All Rights Reserved

12 Solar Reflectance and Thermal Emittance 118(i) The mandatory measures require that all roofing products installed to meet the cool roof requirements for alterations shall be certified to the Cool Roof Rating Council (CRRC). Roofing products that are not certified to the CRRC cannot be installed to meet the cool roof requirements. Certified roofing products can be found on the CRRC website at: The Mandatory Measures also mandate how the applicant shall determine the solar reflectance and thermal emittance values of the roofing product to meet the cool roof requirements. Under the 2008 Standards, the prescriptive approach requires that the roofing product meet a 3-year aged solar reflectance value; not an initial solar reflectance value. The efficiency values of the roofing product shall be determined by one of the following methods: The roofing product is certified to the CRRC with a 3-year aged solar reflectance and thermal emittance values. The roofing product is certified to the CRRC with an initial solar reflectance (not a 3-year aged value) and thermal emittance values. The applicant shall input the initial solar reflectance into the equation R aged below to calculate the aged solar reflectance: R aged = (initial solar reflectance 0.2) Here is an example of how to calculate the aged solar reflectance for a CRRC certified roofing product with an initial solar reflectance of 0.77: R aged = ( ) R aged = (0.57) R aged = R aged = 0.60 The roofing product is certified to the CRRC with a 3-year aged solar reflectance and thermal emittance values, but these values do not meet the prescriptive requirements. As an 12 Copyright 2009 California Energy Commission, All Rights Reserved

13 alternative, the applicant may input the 3-year aged solar reflectance and thermal emittance values into the Solar Reflectance Index (SRI) calculator to meet the SRI requirement. The SRI calculator can be downloaded from the Energy Commission website at: MECHANICAL Alterations Is the MECH-1C signed by both the Designer and the Documentation Author? (a)1 Principle Designer s Declaration Statement For alterations, the individual who applies for the permit shall sign as the Principal Designer; the General Contractor or Mechanical Engineer. The Principal Designer is also responsible for the accuracy of the energy compliance documentation, even if the actual work is delegated to someone else (i.e. the Documentation Author described below). The Business and Professions Code governs who is qualified to accept responsibility for the building design and who can sign this statement. The person s telephone number is provided to facilitate response to any questions that may arise. Documentation Author s Declaration Statement The Documentation Author is the person who prepared the energy compliance documentation and shall sign this Declaration Statement. The Documentation Author s signature declares that the energy compliance documentation is accurate and complete. The person s telephone number is provided to facilitate response to any questions that may arise. A Documentation Author may have additional certifications, such as an Energy Analyst or a Certified Energy Plans Examiner, and shall enter their certification number in the EA# or CEPE# box. Both the Principal Designer (General Contractor or Mechanical Engineer) and Documentation Author shall sign the MECH-1C. If the MECH-1C is not signed by both the Principal Designer and the 13 Copyright 2009 California Energy Commission, All Rights Reserved

14 Documentation Author, the Plans Examiner shall request that both signatures be provided on the form prior to approval for a building permit. Are all appropriate Acceptance Tests identified on the MECH-1C? (a)2A When HVAC equipment or ducting will be added or replaced, the Plans Examiner shall verify that ALL applicable Acceptance Tests are identified on the MECH-1C: MECH-2A: MECH-3A: MECH-4A: MECH-5A: MECH-6A: MECH-7A: MECH-8A: MECH-9A: Ventilation Systems Constant-Volume, Single-Zone, Unitary Air Conditioner and Heat Pumps Air Distribution Systems Air Economizer Controls Demand Control Ventilation (DVC) Supply Fan Variable Flow Controls (VFC) Valve Leakage Test Supply Water Temperature Reset Applies to new or replaced spaceconditioning systems (HVAC equipment and ducting) Applies to new or replaced constant volume, single-zone, and unitary units with direct expansion (DX) cooling Applies ONLY to new or replaced single zone units serving 5,000 ft 2 of space or less and where 25% or more of the duct surface area is in unconditioned space (see HERS Verification) Applies to new or replaced equipment with air economizer controls (Does not apply to factory installed economizers) Applies to new or replaced DCV controls installed with HVAC systems Applies to new or replaced VAV fan volume controls installed with HVAC systems Applies to new or replaced chilled and hot water equipment that is designed for variable flow, or when there is more than one boiler or chiller in the plant and the primary pumps are connected to a common header Applies to new or replaced chilled or hot water equipment that has a supply temperature reset control strategy 14 Copyright 2009 California Energy Commission, All Rights Reserved

15 MECH-10A: MECH-11A: MECH-12A: MECH-13A: MECH-14A: MECH-15A: Hydronic System Variable Flow Control Automatic Demand Shed Control Fault Detection Shed Control for DX Units Automatic Fault Detection & Diagnostics for Air Handling & Zone Terminal Units Distributed Energy Storage DX AC Systems Thermal Energy Storage (TES) Systems programmed into the building automation system Applies to new or replaced water heating equipment that has been designed for variable flow, where the pumps are controlled by variable frequency drives (i.e. chilled and hot water systems; water-loop heat pump and air-conditioning systems) Applies to new or replaced Direct Digital Controls (DDC) to the zone level installed with HVAC system Applies to new or replaced Fault Detection and Diagnostics (FDD) controls for packaged Direct Expansion (DX) units. Applies to new or replaced Fault Detection and Diagnostics (FDD) controls for air handler and zone terminal units Applies to new or replaced constant and variable Direct Expansion (DX) equipment with Distributed Energy Storage (DES/DXAC) Applies to new or replaced thermal energy storage equipment installed in conjunction with chilled water air conditioning systems The Plans Examiner shall verify that all applicable Acceptance Tests and all equipment and controls that require field verification and/or testing are identified on the MECH-1C. If all applicable Acceptance Tests are not specified on the MECH-1C, the Plans Examiner shall request that the Documentation Author or Designer resubmit the form before issuing a building permit. The Plans Examiner should also make a special note (highlight, circle in red pen, use a stamp, include a note block, etc.) on the MECH-1C or building plans to inform the Inspector of which MECH-A forms shall be collected while conducting the Final Inspection. 15 Copyright 2009 California Energy Commission, All Rights Reserved

16 HERS Verification The following alterations will require duct testing by a HERS Rater: Newly installed or replaced space-conditioning systems shall have a duct leakage less than 6%. Newly installed or replaced ducts that form an entirely new duct system shall have a duct leakage less than 6%. When HVAC equipment will be added or replaced (including the air handler, outdoor condensing unit of a split system A/C or heat pump, cooling or heating coil, or the furnace heat exchanger), the existing system shall have a duct leakage less than 15% (or meet another duct leakage requirement in 149(b)1D). When any length of ducting will be added or replaced, the existing system shall have a duct leakage less than 15% (or meet another duct leakage requirement in 149(b)1D). NOTE: Duct leakage testing is required for the alterations listed above ONLY when the altered system is a single zone system serving 5,000 ft 2 of space or less, and 25% or more of the duct surface area is in unconditioned space Were all applicable forms submitted? (a)2C MECH-1C: All submittals MECH-2C: All submittals Can be included on plans as mandatory measures note block MECH-3C: Submit when replacing the air handler or installing a new HVAC system MECH-4C: Submit when the fan power limitation, electric resistance heating, heat rejection systems, and/or air cooled chiller limitation requirements apply ( 144) To simplify enforcement, the Energy Commission recommends that all applicable compliance forms (MECH-2C, MECH-3C, etc.) be printed on the plans (electronically incorporated on the plans) along with the Certificate of Compliance. Having all of the energy forms on the plans simplifies the Plan Review process and helps the Inspector identify the energy components that must be verified in the field. The Plans Examiner shall verify that all applicable forms have been submitted along with the building plans before issuing a building permit. 16 Copyright 2009 California Energy Commission, All Rights Reserved

17 Is the Mandatory Measures note block on the plans? (a)2B The Mechanical mandatory measures are minimum energy efficiency requirements that apply to all mechanical alterations. These mandatory measures ensure a minimum level of energy performance for all mechanical alterations to obtain energy efficiency. A mandatory measures note block that identifies the Mechanical mandatory measures shall be included on the plans. This helps the Builder, Plans Examiner, and Inspector identify the minimum mandatory measures that need to be met. The Plans Examiner shall verify that all applicable Mechanical mandatory measures are specified on the plans. The Documentation Author may include the MECH-2C Form on the plans to identify the Mechanical mandatory measures, or use whatever format is most appropriate for specifying the mandatory measures in the plan set. In general, this will take the form of a note block located on the mechanical plans or next to the mechanical compliance forms, possibly with cross-references to other locations in the plans where measures are specified. Does the Energy Compliance Documentation match the plans? (a)2B Section of the Administrative Regulations (Title 24, Part 1) mandates that the building characteristics modeled to demonstrate compliance with the Energy Standards shall be specified on the plans. The Plans Examiner shall verify that the efficiency values and features of the altered mechanical component(s) from the Mechanical forms are specified on the appropriate sections of the mechanical plans. The Plans Examiner shall also verify that the efficiency values and features of the altered mechanical component(s) on the Mechanical forms meet the prescriptive and mandatory requirements detailed in this section of the Guide. Efficiencies and capacities of HVAC equipment 149(b)1C, 144(a), 112(a) HVAC Equipment Efficiencies When HVAC equipment will be added or replaced, the Plans Examiner shall verify that the HVAC equipment efficiencies identified or referenced on Page 1 (air side) or Page 2 (water side) of the MECH-2C meet the minimum HVAC efficiency requirements listed in Standards Table 112-A through Table 112-M: Table 112-A: Electrically Operated Unitary Air Conditioners and Condensing Units Table 112-B: Unitary and Applied Heat Pumps Table 112-C: Air-Cooled Gas-Engine Heat Pumps 17 Copyright 2009 California Energy Commission, All Rights Reserved

18 Table 112-D: Water Chilling Packages Table 112-E: Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps Table 112-F: Heat Rejection Equipment (Performance Requirements) Table 112-H: Non-Standard Centrifugal Chillers < 150 Tons (COP) Table 112-I: Non-Standard Centrifugal Chillers 150 Tons and < 300 Tons (COP) Table 112-J: Non-Standard Centrifugal Chillers 300 Tons (COP) Table 112-K: Non-Standard Centrifugal Chillers < 150 Tons (IPLV/NPLV) Table 112-L: Non-Standard Centrifugal Chillers 150 Tons and < 300 Tons (IPLV/NPLV) Table 112-M: Non-Standard Centrifugal Chillers 300 Tons (IPLV/NPLV) For HVAC equipment that is not listed in Standards Table 112-A through 112-M, the minimum efficiency requirements may be found in the 2009 Appliance Efficiency Regulations at: HVAC Equipment Capacities When HVAC equipment will be added or replaced, the Plans Examiner shall also verify that the heating and cooling loads for each unit is identified or referenced on Page 1 (air side) or Page 2 (water side) of the MECH-2C. Both the mechanical heating and cooling equipment shall be the smallest size, within the available options of the desired equipment lines, necessary to meet the design heating and cooling loads as calculated according to 144(b). HVAC Equipment Type When HVAC equipment will be added or replaced, the Plans Examiner shall verify that electricresistance heating is not used for space heating. Electric-resistance heating is allowed only when one of the following exceptions applies: Where an electric-resistance heating system supplements a heating system in which at least 60 percent of the annual energy requirement is supplied by site-solar or recovered energy; or Where an electric-resistance heating system supplements a heat pump heating system, and the heating capacity of the heat pump is more than 75 percent of the design heating load calculated in accordance with Section 144(a) at the design outdoor temperature specified in Section 144(b)4; or Where the total capacity of all electric-resistance heating systems serving the entire building is less than 10 percent of the total design output capacity of all heating equipment serving the entire building; or Where the total capacity of all electric-resistance heating systems serving the entire building, excluding those allowed under Exception 2, is no more than 3 kw; or Where an electric resistance heating system serves an entire building that is not a high-rise residential or hotel/motel building; and has a conditioned floor area no greater than 5, Copyright 2009 California Energy Commission, All Rights Reserved

19 square feet; and has no mechanical cooling; and is in an area where natural gas is not currently available and an extension of a natural gas system is impractical, as determined by the natural gas utility. Thermostat and Controls 149(b)1E, 122 Thermostat The Plans Examiner shall verify that the type of thermostat identified or referenced on Page 1 of the MECH-2C is a setback thermostat for the following alterations: When existing HVAC equipment will be replaced (including the air handler, outdoor condensing unit of a split system A/C or heat pump, cooling or heating coil, or the furnace heat exchanger), all existing non-setback thermostats shall be replaced with setback thermostats for the altered system. All newly installed space conditioning systems (HVAC equipment and ducting) requiring a thermostat shall be equipped with a setback thermostat. Controls The Plans Examiner shall also verify that the following HVAC controls are identified on Page 1 of the MECH-2C for the listed HVAC alterations: Control Heat Pump Thermostat Furnace Controls Time Controls Setback and Setup Controls Outdoor Damper Controls Application to Alteration Applies to all new or replaced heat pumps with supplementary electric resistance heaters. 112(b) and 122(d) Applies to all new or replaced natural gas fantype central furnaces. 115 Applies to new or replaced space-conditioning systems (HVAC equipment and ducting). 122(e) Applies to new or replaced space-conditioning systems (HVAC equipment and ducting). 122(e) Applies to replaced air handling units and new or replaced space-conditioning systems (HVAC 19 Copyright 2009 California Energy Commission, All Rights Reserved

20 equipment and ducting). 122(f) Isolation Zones Applies to new or replaced space-conditioning systems (HVAC equipment and ducting) serving an area greater than 25,000 ft (g) Ventilation and Ventilation Rates (cfm) 149(b)1, 121(b) When a space-conditioning system (HVAC equipment and ducting) will be installed or replaced, the Plans Examiner shall verify that the ventilation type (natural or mechanical) identified or referenced on Page 1 of the MECH-2C, and minimum ventilation rates (cfm) identified on the MECH-3C for each altered space-conditioning system meet the ventilation requirements of 121(b) detailed below. Natural Ventilation 121(b)1 Natural outdoor ventilation may be provided for spaces where all normally occupied areas of the space are within a specific distance from an operable wall or roof opening through which outdoor air can flow. This distance is 20 feet for most spaces and 25 feet for hotel/motel guestrooms and highrise residential spaces. The sum of the operable open areas must total at least 5% of the floor area of each space that is naturally ventilated. The openings must also be readily accessible to the occupants of the space at all times. Airflow through the openings must come directly from the outdoors; air may not flow through any intermediate spaces, such as other occupied spaces, unconditioned spaces, corridors, or atriums. High windows or operable skylights need to have a control mechanism accessible from the floor. Minimum Ventilation (Mechanical) 121(b)2 Mechanical outdoor ventilation must be provided for all spaces normally occupied that are not naturally ventilated. The Standards require that a space conditioning system provide outdoor air equal to or greater than the ventilation rates required for each of the spaces that it serves. For every space, the required ventilated air can be provided either directly through supply air, or indirectly through transfer of air from the plenum or an adjacent space, which is calculated on the MECH-3C. For each space requiring mechanical ventilation, the ventilation rates must be no less than the larger of: 20 Copyright 2009 California Energy Commission, All Rights Reserved

21 1. The conditioned floor area of the space multiplied by the applicable minimum ventilation rate from Standards Table 121-A (below); or cfm per person multiplied by the expected number of occupants. For spaces with fixed seating (such as a theater or auditorium) the expected number of occupants is the number of fixed seats. For spaces without fixed seating, the expected number of occupants is assumed to be no less than one-half of the maximum occupant load assumed for egress purposes in Table 4-2 of the 2008 Nonresidential Compliance Manual. Standards Table 121-A Minimum Ventilation Rates TYPE OF USE CFM PER SQUARE FOOT OF CONDITIONED FLOOR AREA Auto repair workshops 1.50 Barber shops 0.40 Bars, cocktail lounges, and casinos 0.20 Beauty shops 0.40 Coin-operated dry cleaning 0.30 Commercial dry cleaning 0.45 High-rise residential Hotel guest rooms (less than 500 ft 2 ) Ventilation Rates Specified by the CBC 30 cfm/guest room Hotel guest rooms (500 ft 2 or greater) 0.15 Retail stores 0.20 All others 0.15 The actual supply air to any given space may be any combination of recirculated air, outdoor air, or air transferred directly from other spaces, provided: a. The total amount of outdoor air delivered by the space-conditioning system(s) to all spaces is at least as large as the sum of the space design quantities; and b. Each space always receives a supply airflow, including recirculated air and/or transfer air, no less than the calculated outdoor ventilation rate; and c. When using transfer air, none of the spaces from which air is transferred has any unusual sources of contaminants. Air may be transferred using any method that ensures a positive airflow. Examples include dedicated transfer fans, exhaust fans and fan-powered VAV boxes. A system having a ducted return may be balanced so that air naturally transfers into the space. Exhaust fans serving the space may discharge directly outdoors, or into a return plenum. Transfer systems should be designed to minimize 21 Copyright 2009 California Energy Commission, All Rights Reserved

22 recirculation of transfer air back into the space; duct work should be arranged to separate the transfer air intake and return points. VAV Minimum Position Control & Demand Control Ventilation 121(c)3, 121(c)4 When a space-conditioning system (HVAC equipment and ducting) will be installed or replaced, the Plans Examiner shall verify that Demand Control Ventilation (DCV) controls meeting the requirements of 121(c)4 are identified or referenced on Part 1 of the MECH-2C for each altered space-conditioning system that meets the following criteria: They are either single zone units with any controls or multiple zone systems with Direct Digital Controls (DDC) to the zone level; and They serve a space with a design occupant density of 40 ft 2 /person or smaller. For areas without fixed seating, DCV systems are required when the design density for egress purposes in Table 4-2 of the 2008 Nonresidential Compliance Manual is 40 ft 2 /person or smaller; and Has an air economizer. Exceptions: 1. Classrooms, call centers, office spaces served by multiple zone systems that are continuously occupied during normal business hours with an occupant density greater than 25 people per 1,000 ft 2 per 121(b)2B (Tables 4-1 and 4-2 in the 2008 Nonresidential Compliance Manual), healthcare facilities and medical buildings, and public areas of social services buildings. 2. Where the space exhaust is greater than the required ventilation rate from 121(b)2B minus 0.2 cfm/ft 2 of conditioned area. 3. Spaces with an area of less than 150 ft 2 or a design occupancy of less than 10 people per 121(b)2B (Tables 4-1 and 4-2 in the 2008 Nonresidential Compliance Manual). 4. Spaces that have processes or operations that generate dusts, fumes, mists, vapors, or gases and are not provided with local exhaust ventilation, such as indoor operation of internal combustion engines or areas designated for unvented food service preparation, or beauty salons shall not install DCV. Duct Insulation 149(b)1D, 124 Verification: When ducting will be added or replaced, the Plans Examiner shall verify that the duct insulation values identified or referenced on Part 1 of the MECH-2C meet the following requirements of 124: a. Portions of the supply and return ducts located in any of the following places shall be insulated to a minimum level of R-8: Outdoors; or 22 Copyright 2009 California Energy Commission, All Rights Reserved

23 In a space between the roof and an insulated ceiling; or In a space directly under a roof with fixed vents or openings to the outside or unconditioned spaces; or In an unconditioned crawlspace; or In other unconditioned spaces. b. Additionally, portions of the supply duct that is not located in any of the above listed spaces, including ducts buried in concrete slabs, shall be insulated to a minimum installed level of R- 4.2 (or any higher level required by CMC section 605) or be enclosed in directly conditioned space. Pipe Insulation 149(b)1, 123 When piping will be added or replaced for space-conditioning systems or service water heating systems, the Plans Examiner shall verify that the pipe insulation values identified or referenced on Page 1 of the MECH-2C for space conditioning systems, or on Page 3 of the MECH-2C for service water heating systems meet the mandatory requirements of 123: The required thickness of piping insulation can be found in Standards Table 123-A (on next page). Pipe insulation thickness will depend on the temperature of the fluid passing through the pipe, the pipe diameter, the function of the pipe within the system, and the pipe insulation s thermal conductivity. The conductivity ranges in Standards Table 123-A are typical for fiberglass or foam pipe insulation. In Table 123-A, runouts are defined as being less than two inches in diameter, less than 12 feet long, and connected to fixtures or individual terminal units. Piping within fan coil units and within other heating or cooling equipment may be considered runouts for the purposes of determining the required pipe insulation. When insulating materials are used that have a conductivity value outside of the conductivity ranges listed in Standards Table 123-A for the applicable fluid range, such as calcium silicate, Standards Equation 123-A (below) may be used to calculate the required pipe insulation thickness. Standards Equation 123-A Insulation Thickness Equation K t k T PR 1 1 PR WHERE: T = Minimum insulation thickness for material with conductivity K, inches. PR = Pipe actual outside radius, inches. t = Insulation thickness from Table 123-A, inches. 23 Copyright 2009 California Energy Commission, All Rights Reserved

24 K = Conductivity of alternate material at the mean rating temperature indicated in Table 123-A for the applicable fluid temperature range, in Btu-inch per hour per square foot per F. k = The lower value of the conductivity range listed in Table 123-A for the applicable fluid temperature range, Btu-inch per hour per square foot per F. Standards Table 123-A FLUID TEMPERATURE RANGE ( F) CONDUCTIVITY RANGE (in Btu-inch per hour per square foot per F) INSULATION MEAN RATING TEMPERATURE ( F) Runouts up to 2 Space heating systems (steam, steam condensate and hot water) NOMINAL PIPE DIAMETER (in inches) 1 and less and larger INSULATION THICKNESS REQUIRED (in inches) Above Service water-heating systems (recirculating sections, all piping in electric trace tape systems, and the first 8 feet of piping from the storage tank for nonrecirculating systems) Above Space cooling systems (chilled water, refrigerant and brine) Below Exceptions: Factory installed piping within space-conditioning equipment certified under 111 or 112. Nationally recognized certification programs that are accepted by the Energy Commission for certifying efficiencies of appliances and equipment are considered to meet the requirements for this exception. Piping that conveys fluid with a design operating temperature range between 60 F and 105 F, such as cooling tower piping or piping in water loop heat pump systems. Piping that serves process loads, gas piping, cold domestic water piping, condensate drains, roof drains, vents or waste piping. 24 Copyright 2009 California Energy Commission, All Rights Reserved

25 Piping that penetrates framing members shall not be required to have pipe insulation for the distance of the framing penetration. Metal piping that penetrates metal framing shall use grommets, plugs, wrapping or other insulating materials to assure that no contact is made with the metal framing. Service Hot Water Equipment 149(b)1L, 145, 113 Water Heater Efficiency When water heating equipment will be added or replaced, the Plans Examiner shall verify that efficiency values identified or referenced on Page 3 of the MECH-2C meet the applicable minimum efficiency requirements in the following tables from the 2009 Appliance Efficiency Regulations (on the next pages): Table F-3 Standards for Large Water Heaters Appliance Input to Volume Ratio Size (Volume) Minimum Thermal Efficiency (%) Maximum Standby Loss¹, ² Gas storage water heaters Gas instantaneous water heaters Gas hot water supply boilers Oil storage water heaters Oil instantaneous water heaters Oil hot water supply boilers Electric storage water heaters < 4,000 Btu/hr/gal 4,000 Btu/hr/gal 4,000 Btu/hr/gal < 4,000 Btu/hr/gal 4,000 Btu/hr/gal 4,000 Btu/hr/gal < 4,000 Btu/hr/gal any 80 Q/ (V r ) 1/2 Btu/hr < 10 gal gal 80 Q/ (V r ) 1/2 Btu/hr < 10 gal gal 80 Q/ (V r ) 1/2 Btu/hr any 78 Q/ (V r ) 1/2 Btu/hr < 10 gal gal 78 Q/ (V r ) 1/2 Btu/hr < 10 gal gal 78 Q/ (V r ) 1/2 Btu/hr any /V m %/hr 25 Copyright 2009 California Energy Commission, All Rights Reserved

26 ¹ Standby loss is based on a 70 F temperature difference between stored water and ambient requirements. In the standby loss equations, V r is the rated volume in gallons, V m is the measured volume in gallons, and Q is the nameplate input rate in Btu/hr. ² Water heaters and hot water supply boilers having more than 140 gallons of storage capacity are not required to meet the standby loss requirement if the tank surface is thermally insulated to R-12.5, if a standing pilot light is not installed, and for gas- or oil-fired storage water heaters, there is a flue damper or fan-assisted combustion. Table F-4 Standards for Small Federally-Regulated Water Heaters Minimum Energy Factor Appliance Effective April 15, 1991 Effective January 20, 2004 Gas-fired storage-type water heaters Oil-fired water heaters (storage and instantaneous) 0.62 (.0019 x V) 0.67 (.0019 x V) 0.59 (.0019 x V) 0.59 (.0019 x V) Electric storage water heaters (excluding 0.93 ( x V) 0.97 ( x V) tabletop water heaters) Electric tabletop water heaters 0.93 ( x V) 0.93 ( x V) Gas-fired instantaneous water heaters 0.62 (.0019 x V) 0.62 (.0019 x V) Electric instantaneous water heaters (excluding tabletop water heaters) Heat pump water heaters V = rated volume in gallons ( x V) 0.93 ( x V) 0.93 ( x V) 0.97 ( x V) Table F-5 Standards for Small Water Heaters that are no Federally-Regulated 26 Copyright 2009 California Energy Commission, All Rights Reserved

27 Appliance Energy Source Input Rating Rated Storage Volume (gallons) Minimum Energy Factor¹ Storage water heaters Gas 75,000 Btu/hr < (.0019 x V) Storage water heaters Gas 75,000 Btu/hr > (.0019 x V) Storage water heaters Oil 105,000 Btu/hr > (.0019 x V) Storage water heaters Electricity 12 kw > ( x V) Instantaneous Water Heaters Instantaneous Water Heaters Instantaneous Water Heaters Gas 50,000 Btu/hr Any 0.62 (.0019 x V) Gas 200,000 Btu/hr (.0019 x V) Oil 210,000 Btu/hr Any 0.59 (.0019 x V) Instantaneous Water Heaters Electricity 12 kw Any 0.93 ( x V) ¹ Volume (V) = rated storage volume in gallons. Table E-5 Standards for Boilers Standards Appliance Output (Btu/hr) Minimum AFUE % Minimum Combustion Efficiency % * Maximum Standby Loss (watts) Gas steam boilers with 3-phase electrical supply All other boilers with 3-phase electrical < 300, < 300, Copyright 2009 California Energy Commission, All Rights Reserved

28 supply Natural gas, nonpackaged boilers LPG Non-packaged boilers Oil, non-packaged boilers 300, , , *At both maximum and minimum rated capacity, as provided and allowed by the controls. NOTE: Definitions of small water heaters, large water heaters, boilers, etc. may be found in the 2009 Appliance Efficiency Regulations at: Storage Tank Insulation Unfired water heater storage tanks and backup tanks for solar water heating systems shall have: 1. External insulation with an R-value of at least R-12; or 2. Internal and external insulation with a combined R-value of at least R-16; or 3. The heat loss of the tank based on an 80 F water-air temperature difference shall be less than 6.5 Btu per hour per ft 2. This corresponds to an effective resistance of R Pipe Insulation See Pipe Insulation above. Pool and Spa Equipment Verification: When pool or spa equipment will be added or replaced, the Plans Examiner shall verify that the efficiency values and installation criteria identified or referenced on Page 3 of the MECH-2C meet the mandatory requirements of 114 (listed on next page): 28 Copyright 2009 California Energy Commission, All Rights Reserved

29 Overview: Pool and Spa Efficiency and Control All pool and spa heating systems and equipment must be certified by the manufacturer and listed by the Energy Commission as having: 1. An efficiency that complies with the Appliance Efficiency Regulations; and 2. An on-off switch mounted on the outside of the heater in a readily accessible location that allows the heater to be shut off without adjusting the thermostat setting; and 3. A permanent, easily readable, and weatherproof plate or card that gives instructions for the energy efficient operation of the pool or spa heater, and for the proper care of the pool or spa water when a cover is used; and 4. No electric resistance heating. The only exceptions are: a) Listed packaged units with fully insulated enclosures and tight fitting covers that are insulated to at least R-6. Listed package units are defined in the National Electric Code and are typically sold as self-contained, UL Listed spas; or b) Pools or spas deriving at least 60 percent of the annual heating energy from site solar energy or recovered energy. Pool and Spa Installation All pool or spa systems and equipment shall have all of the following: 1. If a pool or spa heating system does not currently use solar heating collectors for heating of the water, piping must be installed to accommodate for future solar installation. Contractors can choose 3 options to allow for the future addition of solar heating equipment: Leave at least 36 in. of pipe between the filter and heater to allow for the future addition of solar heating equipment; or Plumb separate suction and return lines to the pool dedicated to future solar heating; or Install built-up or built-in connections for future piping to solar water heating. An example of a built-in connection could be a capped off tee fitting between the filter and heater. 2. Pool and spa heating systems with gas or electric heaters for outdoor use must use a pool cover. The pool cover must be fitted and installed during the final inspection. All pool systems shall also have: 1. Directional inlets must be provided for all pools that adequately mix the pool water; and 2. A time switch or similar control mechanism shall be provided for pools to control the operation of the circulation control system to allow the pump to be set or programmed to run in the off-peak demand period, and for the minimum time necessary to maintain the water in the condition required by applicable public health standards. 29 Copyright 2009 California Energy Commission, All Rights Reserved

30 Pilot Lights Pool and spa heaters may not have a continuously burning pilot light per 115. Additional HVAC Requirements Prescriptive Requirements Additional prescriptive requirements may apply when HVAC equipment will be added or replaced. The Plans Examiner shall verify compliance with all applicable prescriptive requirements for each altered HVAC system. For more information, please refer to the following pages in the 2008 Nonresidential Compliance Manual: Prescriptive requirements on page 1 of the MECH-2C: Heating/Cooling Loads (page 4-73) Fan Control (page 4-75) MECH-4C required DP Sensor Location (page 4-58) Supply Pressure Reset (DDC only) (page 4-58) Simultaneous Heat/Cool (page 4-57) Economizer (page 4-60) Heat and Cool Air Supply Reset (page 4-67) Electric Resistance Heating (page 4-82) Heat Rejection System (page 4-68) Air Cooled Chiller Limitation (page 4-84) Duct Leakage Sealing (page 4-42) Prescriptive requirements on page 2 of the MECH-2C: Cooling Tower Fan Controls (page 4-73) Cooling Tower Flow Controls (page 4-68) Variable Flow System Design (page 4-69) Chiller and Boiler Isolation (page 4-70) CHW and HHW Rest Controls (page 4-70) WLHP Isolation Valves (page 4-70) VSD on CHW, CW and WLHP Pumps > 5 HP (page 4-71) DP Sensor Location (page 4-71) INDOOR LIGHTING Alterations 30 Copyright 2009 California Energy Commission, All Rights Reserved

31 Is the LTG-1C signed by both the Designer and the Documentation Author? (a)1 Principle Designer s Declaration Statement For alterations, the individual who applies for the permit shall sign as the Principal Designer; the General Contractor or Electrical Engineer. The Principal Designer is also responsible for the accuracy of the energy compliance documentation, even if the actual work is delegated to someone else (i.e. the Documentation Author described below). The Business and Professions Code governs who is qualified to accept responsibility of the building design and who can sign this statement. The person s telephone number is provided to facilitate response to any questions that may arise. Documentation Author s Declaration Statement The Documentation Author is the person who prepared the energy compliance documentation and shall sign this Declaration Statement. The Documentation Author s signature declares that the energy compliance documentation is accurate and complete. The person s telephone number is provided to facilitate response to any questions that may arise. A Documentation Author may have additional certifications, such as an Energy Analyst or a Certified Energy Plans Examiner, and shall enter their certification number in the EA# or CEPE# box. Both the Principal Designer (General Contractor or Electrical Engineer) and Documentation Author shall sign the LTG-1C. If the LTG-1C is not signed by both the Principal Designer and the Documentation Author, the Plans Examiner shall request that both signatures be provided on the form prior to approval for a building permit. Are all appropriate Acceptance Tests identified on the (LTG-1C)? (a)2A For newly installed lighting systems (lighting installed for the first time), wiring alterations, and when lighting controls will be added or replaced, the Plans Examiner shall verify that ALL applicable Acceptance Tests are identified on the LTG-1C: LTG-2A: Lighting Controls Applies to new or replaced occupancy sensors, manual daylight controls, and automatic time switch controls 31 Copyright 2009 California Energy Commission, All Rights Reserved

32 The Plans Examiner shall verify that all applicable Acceptance Tests and lighting controls that require field verification and/or testing are identified on the LTG-1C. If all applicable Acceptance Tests are not specified on the LTG-1C, the Plans Examiner shall request that the Documentation Author or Designer resubmit the form before issuing the building permit. The Plans Examiner should also make a special note (highlight, circle in red pen, use a stamp, include a note block, etc.) on the LTG-1C or building plans to inform the Inspector that the LTG-2A Form shall be collected while conducting the Final Inspection. Were all applicable forms submitted? (a)2C LTG-1C: All submittals LTG-2C: Submit when control credits are taken LTG-3C: Indoor Lighting Power Allowances LTG-4C: Submit when the Tailored Method is used LTG-5C: Submit when line voltage track lighting will be installed To simplify enforcement, the Energy Commission recommends that all applicable compliance forms (LTG-2C, LTG-3C, etc.) be printed on the plans (electronically incorporated on the plans) along with the Certificate of Compliance. Having all of the energy forms on the plans simplifies the Plan Review process and helps the Inspector identify the energy components that must be verified in the field. The Plans Examiner shall verify that all applicable forms have been submitted along with the electrical/lighting plans. The following definitions will be used throughout this section of the Guide to help identify the type of lighting alteration and the applicable requirements. Newly Installed Lighting System For newly installed lighting systems (lighting installed for the first time), all applicable mandatory measures and prescriptive requirements discussed in this section of the Guide shall be met. The applicant shall comply using one of the approved indoor lighting calculation methods and submit the LTC-1C and the associated forms for the lighting calculation method used: 32 Copyright 2009 California Energy Commission, All Rights Reserved

33 Complete Building Method LTG-3C Area Category Method LTG-3C Tailored Method LTG-3C and LTG-4C Wiring Alterations For wiring alterations where new or moved wiring will be installed to serve added or moved luminaires; or where conductor wiring from the panel or from a light switch to the luminaire will be replaced; or where a lighting panel is installed or relocated, the altered enclosed space shall meet the following mandatory measures detailed in this section of the Guide: Area Controls Multi-Level Lighting Controls Daylight Area Controls Shut-off Controls Acceptance Testing The Plans Examiner shall collect the LTG-1-C Form and verify the inclusion of the mandatory measures note block on the plans. Lighting Alterations Alterations that increase the connected lighting load, or when more than 50% of the luminaires are replaced or removed and re-installed, the altered enclosed space shall meet the prescriptive requirements (LPDs watts per square foot) discussed in this section of the Guide. The applicant shall comply using one of the approved indoor lighting calculation methods and submit the LTC-1C and the associated forms for the lighting calculation method used: Complete Building Method LTG-3C Area Category Method LTG-3C Tailored Method LTG-3C and LTG-4C Is the Mandatory Measures note block on the plans? (a)2B The Indoor Lighting mandatory measures are minimum energy efficiency requirements that apply to wiring alterations and newly installed lighting systems. These mandatory measures ensure a minimum level of energy performance to obtain energy efficiency. A mandatory measures note block identifying the Indoor Lighting mandatory measures shall be included on the plans. This helps the Builder, Plans Examiner, and Inspector identify the minimum mandatory measures that need to be met. 33 Copyright 2009 California Energy Commission, All Rights Reserved

34 The Plans Examiner shall verify that all applicable Indoor Lighting mandatory measures are specified on the plans. The Documentation Author may use whatever format is most appropriate for specifying the mandatory measures in the plan set. In general, this will take the form of a note block in the electrical/lighting plans or next to the Indoor Lighting compliance forms, possibly with crossreferences to other locations in the plans where measures are specified. Does the Energy Compliance Documentation match the plans? (a)2B Section of the Administrative Regulations (Title 24, Part 1) mandates that the building characteristics modeled to demonstrate compliance with the Energy Standards shall be specified on the plans. The Plans Examiner shall verify that the efficiencies and lighting system components from the Indoor Lighting forms are specified in the appropriate sections of the electrical/lighting plans. LPDs (watts per square foot) 149(b)1I, 146 For lighting alterations (only the altered enclosed space) and newly installed lighting systems, the Plans Examiner shall verify that: 1. The Total Installed Watts specified on Page 2 of the LTG-1C is calculated correctly and equals the sum of all fixtures identified in the Luminaire Schedule. NOTE: The Total Installed Wattage for Conditioned and Unconditioned spaces shall be identified on separate LTG-1C Forms. 2. The Total Installed Watts do not exceed the Allowed Lighting Power (allowed watts) identified on Page 4 of the LTG-1C. The Allowed Lighting Power values listed on the LTG-1C shall match the Allowed Lighting Power values calculated on the LTG-3C, depending on the lighting method used (Complete Building, Area Category, or Tailored Method). NOTE: The Allowed Lighting Power for Conditioned and Unconditioned spaces shall be calculated separately. Once the Total Installed and Allowed Watts have been verified for compliance, the Plans Examiner shall verify that the lighting fixtures and proposed installed watts identified in the Luminaire Schedule (Page 2 of the LTG-1C) are specified in a lighting schedule or in a note block on the electrical Plans. Exceptions: 34 Copyright 2009 California Energy Commission, All Rights Reserved

35 The following lighting applications are exempt from the indoor luminaire power density (watts per square foot) requirements of 146: 1. In theme parks: Lighting for themes and special effects. 2. Studio lighting for film or photography provided that these lighting systems are separately switched from the general lighting system. 3. Lighting for dance floors, lighting for theatrical and other live performances, and theatrical lighting used for religious worship, provided that these lighting systems are in addition to a general lighting system and are separately controlled by a multiscene or theatrical cross-fade control station accessible only to authorized operators. 4. In civic facilities, transportation facilities, convention centers, and hotel function areas: Lighting for temporary exhibits, if the lighting is an addition to a general lighting system and is separately controlled from a panel accessible only to authorized operators. 5. Lighting installed by the manufacturer in refrigerated cases, walk-in freezers, vending machines, food preparation equipment, and scientific and industrial equipment. 6. In medical and clinical buildings: Examination and surgical lights, low-ambient night-lights, and lighting integral to medical equipment, provided that these lighting systems are in addition to and separately switched from a general lighting system. 7. Lighting for plant growth or maintenance, if it is controlled by a multi-level astronomical timeswitch control that complies with the applicable provisions of Lighting equipment that is for sale. 9. Lighting demonstration equipment in lighting education facilities. 10. Lighting that is required for exit signs subject to the CBC. Exit signs shall meet the requirements of the Appliance Efficiency Regulations. 11. Exitway or egress illumination that is normally off and that is subject to the CBC. 12. In hotel/motel buildings: Lighting in guestrooms. Lighting in hotel/motel guestrooms shall comply with 130(b). 13. In high-rise residential buildings: Lighting in dwelling units. Lighting in high-rise residential dwelling units shall comply with 130(b). 14. Temporary lighting systems. 15. Lighting in Occupancy Group U buildings less than 1,000 square feet. 16. Lighting in unconditioned agricultural buildings less than 2,500 square feet. 17. Lighting in parking garages for seven or less vehicles: Lighting in parking garages for seven or less vehicles shall comply with the applicable provisions of 150(k). 18. Lighting for signs: Signs shall comply with Lighting in a videoconferencing studio: Up to 2.5 watts per square foot of lighting in a videoconferencing studio, provided the videoconferencing lighting is in addition to and separately switched from a general lighting system, all of the lighting is controlled by a multiscene programmable control system, and the video conferencing studio has permanently installed videoconferencing cameras, audio equipment, and playback equipment. 20. Lighting for automatic teller machines that are located inside parking garages. Luminaire Power 35 Copyright 2009 California Energy Commission, All Rights Reserved

36 The wattage of installed lighting shall be determined in accordance with 130(d) and 130(e). For more information on how to determine the wattage of installed lighting, please refer to the 2008 Nonresidential Energy Plan Review Guide for Newly Constructed Buildings at: Area Controls 149(b)1I, 131(a) For wiring alterations (only the altered enclosed space) and newly installed lighting systems, the Plans Examiner shall verify that each area enclosed by ceiling-height partitions is controlled by manual switching on the electrical plans, or that the area control devices identified on Page 3 of the LTG-1C Form are specified in a lighting schedule or in a note block on the electrical/lighting plans. Independent switching for an enclosed area will not be identified on the forms, but shall be specified on the electrical plans. On the LTG-1C, when a control device is used, the Documentation Author will identify the type of area control (i.e. an occupant sensor), the number of units, and the location in the building of the device used to control the lights. Overview: Each area enclosed by ceiling-height partitions (a partition that rises from the floor to the ceiling) shall be controlled by independent switching or a control device. This switching or control device shall be: Readily accessible; and Located so that a person using the device can see the lights or area controlled by that switch, or so that the area being lit is annunciated; and Manually operated or automatically controlled by an occupant sensor that meets the applicable requirements of 119. Other devices may be installed in conjunction with the switching or control device provided that they: Permit the switching or control device to manually turn the lights off in each area enclosed by ceiling-height partitions; and Reset the mode of any automatic system to normal operation without further action. Exception: Up to 0.3 watts per square foot of lighting in any area within a building that must be continuously illuminated for reasons of building security or emergency egress can be exempt from the area controls requirements if: 1. The area is designated as a security or emergency egress area on the plans and specifications submitted to the enforcement agency; and 36 Copyright 2009 California Energy Commission, All Rights Reserved

37 2. The security or egress lighting is controlled by switches accessible only to authorized personnel. Multi-level Lighting Controls 149(b)1I, 131(b) For wiring alterations (only the altered enclosed space) and newly installed lighting systems, the Plans Examiner shall verify manual multi-level switching on the electrical plans, or that the multi-level lighting control devices identified on Page 3 of the LTG-1C are specified in a lighting schedule or in a note block on the electrical/lighting plans for any enclosed space of 100 ft 2 or larger that has a connected lighting load exceeding 0.8 watts per square foot. Multi-level switching will not be identified on the forms, but shall be specified on the electrical plans. On the LTG-1C, when a multilevel control device is used, the Documentation Author will identify the type of multi-level lighting control (i.e. a dimmer), the number of units, and the location in the building of the device used. NOTE: Multi-level lighting controls are not required when the enclosed space is less than 100 ft 2, or when the connected lighting load is 0.8 watts per square foot or less. Overview: The general lighting of any enclosed space 100 ft 2 or larger that has a connected lighting load that exceeds 0.8 watts per square foot shall have multi-level lighting controls. Multi-level controls shall have at least one control step that is between 30% and 70% of design lighting power and allow the power of all lights to be manually turned off. A reasonably uniform level of illuminance shall be achieved by any of the following: Continuous or stepped dimming of all lamps or luminaires; or Switching alternate lamps in luminaires, alternate luminaires, or alternate rows of luminaires (below). Multi-Level Switching 37 Copyright 2009 California Energy Commission, All Rights Reserved

38 Exceptions: The following lighting applications are exempt from the multi-level lighting control requirements for indoor lighting: 1. Lights in corridors. 2. A space that has only one luminaire with no more than two lamps. Daylight Area Controls 149(b)1I, 131(c)2 For wiring alterations (only the altered enclosed space) and newly installed lighting systems, the Plans Examiner shall verify that the manual switching for the daylight areas on the electrical plans meets the area control requirements listed below, and/or that the area control devices identified on Page 3 of the LTG-1C are specified in a lighting schedule or in a note block on the electrical/lighting plans when the combined area of primary sidelit daylight area and skylit daylight area exceeds 250 ft 2. Daylight areas greater than 250 ft 2 shall have area controls for primary sidelit daylight areas and skylit daylight areas that meet the requirements of 131(c). Under Mandatory Lighting Controls on Page 3 of the LTG-1C, the Documentation Author will identify the type of area control (i.e. manual switching, occupancy sensor), the number of units, and location in the building of the device used. Overview: When the combined area of both primary sidelit daylight area and skylit daylight area exceed 250 ft 2 in a single room, luminaires providing general lighting that are in or partially in the skylit daylight area and/or the primary sidelit daylight area shall have at least one lighting control that: Controls at least 50 percent of the general lighting power in the primary sidelit and skylit daylight areas separately from other lighting in the enclosed space; and Controls luminaires in primary sidelit areas separately from skylit areas. NOTE: A luminaire is in or partially in a daylight area when at least 50% of the luminaire is located above a floor area that is classified as a daylight area. Primary Sidelit Daylight Area Primary sidelit daylight area is defined as the combined primary sidelit area in a single room without double counting overlapping areas. The floor area for each primary sidelit area is directly adjacent to vertical glazing below the ceiling with an area equal to the product of the sidelit width and the primary sidelit depth. 38 Copyright 2009 California Energy Commission, All Rights Reserved

39 The primary sidelit width is the width of the window plus, on each side, the smallest of: 2 feet; or The distance to any 5 feet or higher permanent vertical obstruction. The primary sidelit depth (illustrated on the next page) is the horizontal distance perpendicular to the glazing which is the smaller of: One window head height; or The distance to any 5 feet or higher permanent vertical obstruction. Primary Sidelit Depth Illustrated Skylit Daylight Area Skylit daylight area is defined as the combined daylight area under each skylight without double counting overlapping areas. The daylight area under each skylight is bounded by the rough opening of the skylight, plus horizontally in each direction the smallest of: 70% of the floor-to-ceiling height; or The distance to any primary sidelit area, or the daylight area under rooftop monitors; or The distance to any permanent partition or permanent rack which is farther away than 70% of the distance between the top of the permanent partition or permanent rack and the ceiling. Skylit Daylight Area Illustrated 39 Copyright 2009 California Energy Commission, All Rights Reserved

40 Automatic Daylighting Controls 149(b)1I, 131(c)2 For wiring alterations (only the altered enclosed space) and newly installed lighting systems, the Plans Examiner shall verify that the automatic daylighting controls for the daylight areas specified on the electrical plans meets the requirements listed below, and/or that the area control devices identified on page 3 of the LTG-1C are specified in a lighting schedule or in a note block on the electrical/lighting plans when the total primary sidelit daylight area in a single room exceeds 2,500 ft 2 or the total skylit daylight area in a single room exceeds 2,500 ft 2. Daylight areas greater than 2,500 ft 2 shall have automatic daylighting controls that meet the requirements of 131(c). Under Mandatory Lighting Controls on Page 3 of the LTG-1C, the Documentation Author will identify the type of automatic daylighting control (i.e. photocontrol, astronomical time switch, etc.), the number of units, and the location in the building of the device used. Overview: Primary Sidelit Daylight Area The primary sidelit daylight area(s) shall be shown on the plans, and the general lighting in the primary sidelit daylighting areas exceeding 2,500 ft 2 in any enclosed space shall be controlled independently by an automatic daylighting control device with multi-level lighting control, including continuous dimming, and have at least one control step that is between 50% to 70% of rated power of the controlled lighting. Exceptions: 40 Copyright 2009 California Energy Commission, All Rights Reserved