[Extract from the Punjab Govt. Gaz., dated the 1st July, 2016] GOVERNMENT OF PUNJAB DEPARTMENT OF NEW & RENEWABLE ENERGY (Approved vide Cabinet order No. 2167 dated 25.05.2016) NOTIFICATION The 24th June, 2016 No. 18/4/16-6711/1856.— In exercise of the powers conferred under Section 18 of The Energy Conservation Act-2001 (Act No. 52 of 2001), the Governor of Punjab is pleased to issue the following directions for the mandatory use of "Punjab Energy Conservation Building Code” for the energy efficiency and its conservation in the buildings or building complexes in the State of Punjab.
1. Purpose The purpose of this code is to provide minimum requirements for the energy-efficient design and construction of buildings in the state of Punjab.
1.1. This code shall be called Punjab Energy Conservation Building Code (Punjab-ECBC).
2. Scope The Punjab Energy Conservation Building Code (Punjab-ECBC) gives directives for the requirements for design or retrofit of buildings/ building complexes.
The code is applicable to buildings or building complexes that have connected load of 100 kW or greater or a contract demand of 120 kVA or greater or having conditioned area of 500 m? or more.
Punjab-ECBC pertains to all buildings / building complexes such as offices, hotels, shopping complexes, group housing complexes, hospitals and others that are not primarily for industrial i.e. manufacturing use.
2.1. Applicable Building systems The provisions of Punjab-ECBC apply to:
a) Building envelopes, except for unconditioned storage spaces or warehouses;
b) Mechanical systems and equipment, including heating ventilating, and air conditioning;
c) Service hot water heating;
d) Interior and exterior lighting; and e) Electrical power and motors.
2.2. Exemptions The provisions of Punjab-ECBC do not apply to:
a) Buildings that do not use either electricity or fossil fuel; and b) | Equipment and portions of building systems that use energy primarily for manufacturing process
2.3. Safety, Health and Environmental Codes Take Precedence Where this code is found to conflict with safety, health, or environmental codes, the safety, health, or environmental codes shall take precedence.
2.4. Reference Standards The Energy Conservation Building Code 2007 and the National Building Code 2005 are the reference document/ standards for lighting levels, HVAC, comfort levels, natural ventilation, pump and motor efficiencies, transformer efficiencies and any other building materials and system performance criteria. In addition, a field survey was conducted with practicing architects and the common man to ascertain their requirements.
3. Administration and Enforcement
3.1 Compliance Requirements
3.1.1 Mandatory Requirements a) Compliance with the requirements of Punjab-ECBC shall be mandatory for all applicable buildings discussed in clause 2.
b) ~All Government notifications related to energy conservation or mandatory use of any product/process or equipment shall be complied with.
c) Inbuildings specified in clause 2, preferably locally manufactured/ available material should be used.
3.1.2 New Buildings New buildings shall comply with either the provisions of clause 4 through clause 8 of Punjab-ECBC or the whole building performance method of Appendix B clause 10.
Incase, the project is to be built in phases, then Punjab-ECBC shall be applicable on the whole building load in total and not the individual buildings designed later on in phases.
3.1.3 Additions to Existing Buildings Where the addition plus the existing building exceeds the conditioned floor area threshold of clause 2, additions shall comply with the provisions of clause 4 through clause 8. Compliance may be demonstrated in the following ways:
a) The addition alone shall comply with the applicable requirements, or b) The addition, together with the entire existing building, shall comply with the requirements of this code that would apply to the entire building, as if it were a new building.
Exception to clause 3.1.3: When space conditioning is provided by existing systems and equipment, the existing systems and equipment need not comply with this code. However, any new equipment installed must comply with specific requirements applicable to that equipment.
3.1.4 Alterations to Existing buildings Where the existing building exceeds the conditioned floor area threshold in clause 2, portions of a building and its systems that are being altered shall meet the provisions of clause 4 through clause 8. The specific requirements for alterations are described in the following subsections 3.1.4.1 to 3.1.4.6.
Exception to clause 3.1.4: When the entire building complies with all of the provisions of clause 4 through clause 8 as if it were a new building.
3.1.4.1 Building Envelope Alterations to the building envelope shall comply with the requirements of clause 4 for fenestration, insulation, and air leakage applicable to the portions of the buildings and its systems being changed.
Exception to clause 3.1.4.1: The following alterations need not comply with these requirements provided such changes do not increase the energy usage of the building:
a) Replacement of glass in an existing sash and frame, provided the U-factor and SHGC of the replacement glazing are equal to or lower than the existing glazing b) Modifications to roof/ceiling wall, or floor cavities which are insulated to full depth with insulation c) Modifications to walls and floors without cavities and where no new cavities are created.
3.1.4.2 Heating, Ventilation and Air Conditioning Alterations to building heating, ventilating, and air-conditioning, equipment or systems shall comply with the requirements of clause 5 applicable to the portions of the building and its systems being altered. Any new equipment or control devices installed in conjunction with the alteration shall comply with the specific requirements applicable to that equipment or control device.
3.1.4.3 Service Water Heating Alterations to building service water heating equipment or systems shall comply with the requirements of clause 3 6 applicable to the portions of the building and its systems being altered. Any new equipment or control devices installed in conjunction with the alteration shall comply with the specific requirements applicable to that equipment or control device.
3.1.4.4 Lighting Alterations to building lighting equipment or systems shall comply with the requirements of clause 7 applicable to the portions of the building and its systems being altered. New lighting systems, including controls, installed in an existing building and any change of building area type as listed in Table 7.1 shall be considered an alteration. Any new equipment or control devices installed in conjunction with the alteration shall comply with the specific requirements applicable to that equipment or control device.
Exception to clause 3.1.4.4: Alterations that replace less than 50% of the luminaries in a space need not comply with these requirements provided such alterations do not increase the connected lighting load.
3.1.4.5 Electric Power and Motors Alterations to building electric power systems and motor shall comply with the requirements of clause 8 applicable to the portions of the building and its systems being altered. Any new equipment or control devices installed in conjunction with the alteration shall comply with the specific requirements applicable to that equipment or control device.
3.1.4.6 Star Labelling and Minimum Star Rating All equipments and materials of type and specification coming under the purview of the star labeling program as notified by BEE shall have minimum three star rating or above or as notified by the State Government.
3.2. Compliance Approaches The building shall comply with the mandatory provisions (clause 4.2, clause 5.2, clause 6.2, clause 7.2 and clause 8.2) and either of the following:
a) Prescriptive Method (clause 4.3, clause 5.3, clause 6.3 ) Exception to clause 3.2 (a): The envelope trade-off option of clause 4.4 may be used in place of the prescriptive criteria of clause 4.3 b) Whole Building Performance Method (Appendix B clause 10)
3.3 Administrative Requirements Administrative requirements relating to permit requirements, enforcement, interpretations, claims of exemption, approved calculation methods, and rights of appeal are specified by the authority having jurisdiction.
3.3.1 Authority having Jurisdiction For the administration and enforcement of the Punjab-ECBC, the State Designated Agency shall act as the “Authority having Jurisdiction” who shall be responsible for specifying permit requirements, code interpretations, approval calculation methods, worksheets and formats, compliance forms, manufacturing literature, rights of appeal and any other data to demonstrate compliance.
3.4 Compliance Documents
3.4.1 General Plans and specifications shall show all pertinent data and features of the building, equipment, and systems in sufficient detail to permit the authority having jurisdiction to verify that the building complies with the requirements of Punjab-ECBC. Detail shall include, but are not limited to:
a) Building Envelope: Insulation materials and their R-values, fenestration U-factors, solar heat gain coefficients (SHGOC), visible light transmittance (if the trade-off procedure is used), and air leakage;
overhangs and sidefins, building envelope sealing details.
4 b) Heating, Ventilation, and Air-Conditioning: system and equipment types, sizes, efficiencies, and controls; economizers; variable speed drives; piping insulation; duct sealing insulation and location;
requirement for balance report c) Service Hot Water and Pumping: solar water heating system d) Lighting: lighting schedule showing type, number, and wattage of lamps and ballasts; automatic lighting shutoff, occupancy sensors, and other lighting controls; lamp efficacy for exterior lamps e) Electrical Power: Electric schedule showing transformer losses, motor efficiencies, and power factor correction devices, electric check metering and monitoring system.
3.4.2 Supplemental Information The authority having jurisdiction may require supplemental information necessary to verify compliance with this code, such as calculations, worksheets, compliance forms, manufacturer's literature, or other data.
4. Envelope
4.1 General The building envelope shall comply with the mandatory provisions of clause 4.2 and either the prescriptive criteria of clause 4.3 or the trade-off option of clause 4.4.
4.2 Mandatory Requirements
4.2.1 Fenestration
4.2.1.1 U-Factors U-factors shall be determined for the overall fenestration product (including the sash and frame) in accordance with ISO-15099, as specified in Appendix C clause 11, by an accredited independent laboratory, and labeled and certified by the manufacturer or other responsible party. U-factors for sloped glazing and skylights shall be determined at a slope of 20 degrees above the horizontal. For unrated products, use the default table in Appendix C clause 11.
4.2.1.2 Solar Heat Gain Coefficient (SHGC) SHGC shall be determined for the overall fenestration product (including the sash and frame) in accordance with ISO-15099, as specified in Appendix C clause 11, by an accredited independent laboratory, and labeled and certified by the manufacturer or other responsible party.
Exceptions to clause 4.2.1.2:
a) Shading coefficient (SC) of the centre glass alone multiplied by 0.86 is an acceptable alternate for compliance with the SHGC requirements for the overall fenestration area.
b) Solar heat gain coefficient (SHGC) of the glass alone is an acceptable alternate for compliance with the SHGC requirements for the overall fenestration product.
4.2.1.3 Air Leakage Air leakage for glazed swinging entrance doors and revolving doors shall not exceed 5.0 I/s-m?. Air leakage for other fenestration and doors shall not exceed 2.0 I/s-m’.
4.2.2 Opaque Construction U-factors shall be determined from the default tables in Appendix C clause 11 or determined from data or procedures contained in the ASHRAE Fundamentals, 2005
4.2.3 Building Envelope Sealing The following areas of the enclosed building envelope shall be sealed, caulked, gasketed, or weather-stripped to minimize air leakage:
a) Joints around fenestration and door frames;
b) Openings between walls and foundations and between walls and roof and wall panels;
c) Openings at penetrations of utility services through, roofs, walls, and floors;
d) — Site-built fenestration and doors;
e) Building assemblies used as ducts or plenums; and f) All other openings in the building envelope
4.3 Prescriptive Requirements
4.3.1 Roofs Roofs shall comply with either the maximum assembly U-factor or the minimum insulation R-value in Table 4.1.
R- Value is for the insulation alone and does not include building materials or air films. The roof insulation shall not be located on a suspended ceiling with removable ceiling panels.
Table 4.1: Roof assembly U-factor and Insulation R-value Requirements Climate Zone 24-Hour use buildings Daytime use buildings Hospitals, Hotels, Other Building Types Call Centers, etc.
Maximum U-factor of Minimum R-value of Maximum U-factor of Minimum R-Value of the overall assembly insulation alone the overall assembly insulation alone (W/ m?-°C) (m-°C/W) (W/ m-°C) (m-°C/W) Composite U-0.261 R35 U-0.409 R21 Note: Punjab is covered by Composite climate zone only. For information on other climate zones, please refer relevant tables of ECBC-2007
4.3.1.1 Cool Roofs Roofs with slops less than 20 degrees shall have an initial solar reflectance of no less than 0.70 and an initial emittance of no less than 0.75. Solar reflectance shall be determined in accordance with ASTM E903-96 and emittance shall be determined in accordance with ASTM E408-71 (RA 1996)
4.3.2 Opaque Walls Opaque walls shall comply with either the maximum assembly U-factor or the minimum insulation R-value in Table 4.2. R-value is for the insulation alone and does not include building materials or air films.
Table 4.2: Opaque Wall Assembly U-factor and Insulation R-value Requirements Climate Zone Hospitals, Hotels, Call Centres Other Building Types (Daytime) (24 Hour) Maximum U-factorof MinimumR-value of | Maximum U-factorof Minimum R-Value the overall assembly insulation alone the overall assembly of insulation alone (W/ m2-°C) (m?-°C/W) (W/ m2-°C) (m?-°C/W) Composite U-0.440 R-2.10 U-0.440 R-2.10 Note: Punjab is covered by Composite climate zone only. For information on other climate zones, please refer relevant tables of ECBC 2007
4.3.3 Vertical Fenestration Vertical fenestration shall comply with the maximum area weighted U-factor and maximum area weighted SHGC requirements of Table 4.3. Vertical fenestration area is limited to a maximum of 60% of the gross wall area for the prescriptive requirement.
6 Table 4.3: Vertical Fenestration U-factor and SHGC requirements (U-factor in W/ m?-°C) WWRX40% 40%<WWRS60% Climate Maximum U-factor Maximum SHGC Maximum SHGC Composite 3.30 0.25 0.20 See Appendix C clause 11.2.1 for Default values of Unrated Fenestration Note: Punjab is covered by Composite climate zone only. For information on other climate zones, please refer relevant tables of ECBC 2007 Exception to clause 4.3.3: Overhangs and/or side fins may be applied in determining the SHGC for the proposed design. An adjusted SHGC, accounting for overhangs and/or sidefins, is calculated by multiplying the SHGC of the unshaded fenestration product times a multiplication (M) factor. If this exception is applied, a separate M Factor shall be determined for each orientation and unique shading condition by Equation 12-2 and the overhang and side fins coefficients are available in Table 12.6 clause 12.
Table 4.4: SHGC “M” Factor Adjustments for Overhangs and Fins Overhang “M” Factors for 4 Projection Vertical Fin “M” Factors for Overhang+Fin"M” Factors Factors 4 Projection Factors for 4 Projection Factors Project Orientation 0.25- 050- 075- 100 025- OS0- 075- 100 025- 050 075- 100 Location 049 (074 09 + 049 074 09 + 049 (074 099 + North latitude N 8 8 4 2B A ff SS 32 & SI 393 15° or greater HW NH 6 6 DOD 89% RB 6§ OH OH 3D 4 16 S DH Fh 2 8B DPD © HM 46 OO 3 10 Less than 15° N 8B A 8 6 BRB 6 ST OD 9 HM 32 2 NorthLatitude HW 8 7 SD 3 89 RW 8 38 OL Al 2 16 s B ££ 5S 0 74 6 SS DOD 3 30 12 Exception to SHGC Requirements in clause 4.3.3: Vertical fenestration areas located more than 2.2 m (7 ft) above the level of the floor are exempt from the SHGC requirement in Table 4.3 if the following conditions are complied with:
a) ‘Total Effective Aperture: The total Effective Aperture for the elevation is less than 0.25, including all fenestration areas greater than 1.0m (3 ft) above the floor level; and, b) An interior light shelf is provided at the bottom of this fenestration area, with an interior projection factor not less than:
1. 1.0 for E-W, SE, SW, NE, and NW orientations ii. 0.5 for S orientation, and ti. 0.35 for N orientation when latitude is < 23 degrees.
4.3.3.1 Minimum Visible Transmission of glazing for vertical fenestration Vertical fenestration product shall have the minimum Visual Light Transmittance (VLT), defined as function of Window Wall Ratio (WWR), where Effective Aperture > 0.1, equal to or greater than the Minimum VLT requirements of Table 4.5.
Table 4.5: Minimum VLT Requirements Window Wall Ratio Minimum VLT 0-0.3 0.27
0.31-0.4 0.20
0.41-0.5 0.16
0.51-0.6 0.13
4.3.4 Skylights Skylights shall comply with the maximum U-factor and maximum SHGC requirements of Table 4.6. Skylight area is limited to a maximum of 5% of the gross roof area for the prescriptive requirement.
Table 4.6: Skylight U-factor and SHGC Requirements (U-factor in W/ m2-°C) Maximum U-Factor Maximum SHGC Climate With Curb w/o Curb 0-2% SRR 2.1-5% SRR Composite 11.24 771 0.40 0.25 SRR= Skylight roof ratio which is the ratio of the total skylight area of the roof, measured to the outside of the frame, to the gross exterior roof.
See clause 11.2.2 for typical complying skylight constructions.
4.4 Building envelope Trade Off Option The building envelope complies with the code if the building envelope performance factor (EPF) of the proposed design is less than the standard design, where the standard design exactly complies with the criteria in clause 4.3.
The envelope trade-off equation is found in Appendix D clause12.
5. Heating, Ventilation and Air Conditioning
5.1 General a) Allheating, ventilation and air conditioning equipments and systems shall comply with the mandatory provisions of clause 5.2 and the prescriptive criteria of clause 5.3.
b) The evaporative systems when used for cooling shall not use any potable water but their water requirement should be met from either the on site collected rainwater or the treated waste water.
Exception to clause 5.1(b): The evaporative cooling system using on site treated water or any other passive cooling systems such as Earth Air Tunnel (EAT) shall be used to pre cool the fresh air supplied to the building by at least 10°C under peak summer temperature.
5.2 Mandatory Requirements
5.2.1 Natural ventilation Natural ventilation shall comply with the design guidelines provided for natural verification in the National Building Code of India 2005 Part 8, Section 1, 5.4.3 and 5.7.1.
5.2.2 Minimum equipment Efficiencies Cooling equipment shall meet or exceed the minimum efficiency requirements presented in Table 5.1. Heating and cooling equipment not listed here shall comply with ASHRAE 90. 1-2004 clause 6.4.1. All cooling equipments shall comply with the provisions of clause 3.1.4.6.
Unitary Air Conditioner shall meet IS 1391 (Part 1), Split air conditioner shall meet IS 1391 (Part 2), Packaged air conditioner shall meet IS 8148 and Boilers shall meet IS 13980 with above 75% thermal efficiency.
Table 5.1: Chillers Equipment class Minimum Minimum Test Standard COP IPLV Air Cooled Chiller <530 KW (<150 tons) 2.90 3.16 ARI 550/590-1998 Air Cooled Chiller 2 530 KW (2150 tons) 3.05 8.32 ARI 550/590-1998 *Centrifugal water cooled Chiller <530 KW (<150 tons) 5.80 6.09 ART 550/590-1998 *Centrifugal Water Cooled Chiller 2530 and <1050 KW 5.80 6.17 ARI 550/590-1998 (2150 and <300 tons) *Centrifugal Water Cooled Chiller 21050 KW (2300 tons) 6.30 6.61 ARI 550/590-1998 Reciprocating Compressor, Water Cooled Chiller all sizes 4.20 5.05 ARTI550/590-1998 Rotary Screw and Scroll Compressor, Water Cooled 4.70 5.49 ARI 550/590-1998 Chiller <530KW (<150 tons) Rotary Screw and Scroll Compressor, Water Cooled 5.40 6.17 ARI 550/590-1998 Chiller >530KW and <1050 KW (2150 and <300 tons) Rotary Screw and Scroll Compressor, Water Cooled 519 6.43 ARI 550/590-1998 Chiller >1050KW (2300 tons) *These are aspirational values. For mandatory values refer to ASHRAE 90.1-2004
5.2.3 Ceiling Fans Efficiencies All fans including ceiling fans, wall mounted fans, pedestal fans and exhaust fans shall comply with the provisions of clause 3.1.4.6.
5.2.4 Controls
5.2.4.1 All mechanical cooling and heating systems shall be controlled by a time clock that:
a) Can start and stop the system under different schedules for three different day-types per week;
b) Is capable of retaining programming and time setting during loss of power for a period of at least 10 hours; and c) Includes an accessible manual override that allows temporary operation of the system for up to 2 hours.
Exceptions to clause 5.2.4.1:
a) Cooling systems < 28 kW (8 tons) b) Heating Systems < 7 kW (2 tons)
5.2.4.2 All heating and cooling equipment shall be temperature controlled. Where a unit provides both heating and cooling, controls shall be capable of providing a temperature dead band of 3°C (S°F) within which the supply of heating and cooling energy to the zone is shut off or reduced to a minimum. Where separate heating and cooling equipment serve the same temperature zone, thermostats shall be interlocked to prevent simultaneous heating and cooling.
5.2.4.3 All cooling towers and closed circuit fluid coolers shall have either two speed motors, pony motors, or variable speed drives controlling the fans.
5.2.4.4 The automatic door closure and door gaps sealing arrangement should be provided in all air conditioned rooms.
5.2.4.5 Each air conditioned space shall have a digital temperature indicator to indicate the operating temperature of the area.
5.2.4.6 Each air conditioned space shall be provided with ceiling fans/ wall mounted fans/air circulators so that effective cooling is maintained in the space.
5.2.4.7 Each room air conditioner shall be provided with at least one control device for display and regulation of temperature. The thermostat temperature of rooms/spaces can be preferably set at 24°C when air conditioning is used for comfort cooling.
5.2.4.8 Zone Control: The supply of cooling energy to each zone shall be controlled by individual thermostatic controls responding to temperature within the zone. Zone controls should be set no lower than indoor design conditions (24°C). Temperature sensors shall be located in the zone or return air path.
5.2.5 Piping and Ductwork
5.2.5.1 Piping for heating systems with a design operating temperature of 60°C (140°F) or greater shall at least R-0.70 (R-4) insulation. Piping for heating systems with a design operating temperature less than 60°C (140°F) but greater than 40°C- (104°P), piping for cooling systems with a design operating temperature less than 15°C (59°F), and refrigerant suction piping on split systems shall have at least R-0.35 (R-2) insulation exposed to weather shall be protected by aluminum sheet metal, painted canvas, or plastic cover. Cellular foam insulation shall be protected as above, or be painted with water retardant paint.
5.2.5.2 Ductwork shall be insulated in accordance with Table 5.2 Table 5.2: Ductwork Insulation (m? -°C/W) Required Insulation (a) Duct Location Supply Ducts Return Ducts Exterior R-1.4 R-0.6 Ventilated Attic R-14 R-0.6 Unventilated Attic without Roof insulation R-1.4 R-0.6 Unventilated Attic with Roof insulation R-0.6 No Requirement Unconditioned Space(b) R-0.6 No Requirement Indirectly Conditioned Space(c) No Requirement No Requirement Buried R-0.6 No Requirement “Insulation R-Value is measured on a horizontal plane in accordance with ASTM C518 at a mean temperature of 24°C (75°F) at the installed thickness.
) Includes crawlspaces, both ventilated and non-ventilated Includes return air plenums with or without exposed roofs above.
5.2.6 System Balancing
5.2.6.1 General Construction documents shall require that all HVAC systems be balanced in accordance with generally accepted engineering standards.
Construction documents shall require that a written balance report be provided to the owner or the designated representative of the building owner for HVAC systems serving zones with a total conditioned area exceeding 500m2(5,000ft2).
5.2.6.1.1 Air System Balancing Air systems shall be balanced in a manner to first minimize throttling losses. Then, for fans with fan system power greater than 0.75 kW (1.0 hp), fan speed shall be adjusted to meet design flow conditions.
5.2.6.1.2 Hydronic System Balancing Hydronic Systems shall be proportionately balanced in a manner to first minimize throttling losses, then the pump impeller shall be trimmed or pump speed be adjusted to meet design flow conditions.
Exceptions to Clause 5.2.6.1.2:
10 a) Impellers need not be trimmed nor pump speed adjusted for pumps with pump motors of 7.5 kW (10hp) or less;
b) Impellers need not be trimmed when throttling results in no greater than 5% of the name plate horsepower draw, or 2.2 kW (3 hp), whichever is greater.
5.2.7 Condensers
5.2.7.1 Condenser Locations Care shall be exercised in locating the condensers in such a manner that heat sink is free of interference from heat discharge by devices located in adjoining spaces and also does not interfere with such other systems installed nearby.
The condensers (outdoor units) especially of single unit room air conditioners shall be located in shaded and well ventilated area closest to the evaporator (indoor unit). In case of unavailability of shaded area, the condensers shall be provided with artificial shading to prevent direct heating of the unit during day time by the sunlight. The unitary air conditioners shall also be installed in suitable locations to avoid direct sunlight and shading may be provided for improved performance. The piping system connecting the outdoor and indoor units shall be installed as per clause 5.2.5.1 and the length of such pipes shall not exceed the length as specified by the manufacturer.
5.2.7.2 Treated water for condensers All high-rise buildings using centralized cooling water system shall use soft water for the condenser and chilled water system.
5.3. Prescriptive Requirements Compliance shall be demonstrated with the requirements in clause 5.3.1 through clause 5.3.2 for each HVAC system that meets the following criteria:
a) Serves a single zone b) Cooling (if any) is provided by a unitary packaged or split-system air conditioner or heat pump.
c) Heating (if any) is provided by a unitary packaged or split-system heat pump, fuel-fired furnace, electric resistance heater, or baseboards connected to a boiler.
d) Outside air quantity is less than 1,400 I/s (3,000 cfm) and less than 70% of supply air at design conditions.
Other HVAC systems shall comply with ASHRAE 90.1-2004, clause 6.5.
5.3.1 Economizers
5.3.1.1 Air Side Economizer Each individual cooling fan system that has a design supply capacity over 1,200 I/s (2,500 cfm) and a total mechanical cooling capacity over 22 kW (6.3 tons) shall include either:
a) Anaireconomizer capable of modulating outside-air and return-air dampers to supply 100 percent of the design supply air quantity as outside-air; or b) A water economizer capable of providing 100% of the expected system cooling load at outside air temperatures of 10°C (50°F) dry-bulb/7.2°C (45°F) wet-bulb and below.
Exception to clause 5.3.1.1: Individual ceiling mounted fan systems <3,200 1I/s (6,500 cfm) are exempt
5.3.1.2 Where required by clause 5.3.1.1 economizers shall be capable of providing partial cooling even when additional mechanical cooling is required to meet the cooling load.
5.3.1.3 Air-side economizers shall be tested in the field following the requirements in Appendix F clause 14 to ensure 11 proper operation.
Exception to clause 5.3.1.3: Air economizers installed by the HVAC system equipment manufacturer and certified to the building department as being factory calibrated and tested per the procedures in Appendix F clause 14.
5.3.2 Variable Flow Hydronic Systems
5.3.2.1 Chilled or hot-water systems shall be designed for variable fluid flow and shall be capable of reducing pump flow rates to no more than the larger of:
a) 50% of the design flow rate, or b) The minimum flow required by the equipment manufacturer for proper operation of the chillers or boilers
5.3.2.2 Water cooled air-conditioning or heat pump units with a circulation pump motor greater than or equal to 3.7 kW (5 hp) shall have two-way automatic isolation valves on each water cooled air-conditioning or heat pump unit that are interlocked with the compressor to shutoff condenser water flow when the compressor is not operating.
5.3.2.3 Chilled water or condenser water systems that must comply with either clause 5.3.2.1 or clause 5.3.2.2 and that have pump motors greater than or equal to 3.7 kw (Shp) shall be controlled by variable speed drives.
6. Service Hot Water and Pumping
6.1 General All service water heating equipment and systems shall comply with the mandatory provisions of clause 6.2.
6.2 Mandatory Requirements
6.2.1 Solar Water Heating Residential facilities, hotels and hospitals with a centralized system shall have solar water heating for at least 1/5 of the design capacity.
Exception to clause 6.2.1: Systems that use heat recovery for at least 1/5 of the design capacity.
6.2.2 Equipment Efficiency Service water heating equipment shall meet or exceed the performance and minimum efficiency requirements presented in available Indian Standards.
a) Solar water heater shall meet the performance/minimum efficiency level mentioned in IS 13129 Part (1&2) b) Gas Instantaneous Water heaters shall meet the performance/minimum efficiency level mentioned in IS 15558 with above 80% thermal efficiency.
c) Electric water heater shall meet the performance/minimum efficiency level mentioned in IS 2082. All heating equipments shall comply with the provisions of clause 3.1.4.6.
6.2.3 Supplementary Water Heating System Supplementary heating system shall be designed to maximize the energy efficiency of the system and shall incorporate the following design features in cascade:
a) Maximum heat recovery from hot discharge system like condensers of air conditioning units b) Use of gas fired heaters wherever gas is available c) Electric heater as last resort
6.2.4 Piping Insulation Piping insulation shall comply with clause 5.2.4.1. The entire hot water system including the storage tanks, pipelines shall be insulated conforming to the relevant IS standards on material and applications.
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6.2.5 Heat Traps Vertical pipe risers serving storage water heaters and storage tanks not having integral heat traps and serving a non-recirculating system shall have heat traps on both the inlet and outlet piping as close as practical to the storage tank.
6.2.6 Swimming Pools Heated pools shall be provided with a vapor retardant pool cover on or at the water surface. Pools heated to more than 32° C (90°F) shall have a pool cover with a minimum insulation value of R-2.1 (R-12) Exception to clause 6.2.6: Pools deriving over 60% of their energy from site-recovered energy or solar energy source.
6.2.7 Compliance Documentation The application for approval shall furnish detailed calculation showing the design to ensure that at least 20% of the heating requirement shall be met from solar heat/heat recovery and not more than 80% of the heat shall be met from electrical heating. Wherever gas is available, not more than 20% of the heat shall be met from electrical heating.
7. Lighting
7.1 General Lighting systems and equipment shall comply with the mandatory provisions of clause 7.2 and the prescriptive criteria of clause 7.3 and clause 7.3.4. The lighting requirements in this section shall apply to:
a) Interior spaces of buildings b) Exterior building features, including facades, illuminated roofs, architectural features, entrances, exits, loading docks, and illuminated canopies.
c) Exterior building grounds lighting that is provided through the building's electrical service Exceptions to clause 7.1:
a) Emergency lighting that is automatically off during normal building operation and is powered by battery, generator, or other alternate power source b) Lighting in dwelling units
7.2 Mandatory Requirements
7.2.1 Lighting Control
7.2.1.1 Automatic Lighting Shutoff Interior lighting systems in buildings larger than 500m? (5,000 ft?) shall be equipped with an automatic control device. Within these buildings, all office areas less than 30 m?(300ft”) enclosed by walls or ceiling-height partitions, all meeting and conference rooms, all school classrooms, and all storage spaces shall be equipped with occupancy sensors. For other spaces, this automatic control device shall function on either:
a) Ascheduled basis at specific programmed times. An independent program schedule shall be provided for areas of no more than 2500 m? (25000 ft”) and not more than one floor; or, b) Occupancy sensors that shall turn the lighting off within 10 minutes of an occupant leaving the space.
Light fixtures controlled by occupancy sensors shall have a wall-mounted, manual switch capable of turning off lights when the space is occupied.
Exception to clause 7.2.1.1: Lighting systems designed for 24 hour use.
7.2.1.2 Space Control Each space enclosed by ceiling-height partitions shall have at least one control device to independently control the general lighting within the space. Each control device shall be activated either manually by an occupant or 13 automatically by sensing an occupant. Each control device shall:
a) Control a maximum of 250m? (2,500 ft’) for a space less than or equal to 1,000 m? (10,000 ft?), and a maximum of 1,000 m? (10,000 ft”) for a space greater than 1000 m? (10000 ft”) b) Be capable of overriding the shutoff control required in clause 7.2.1.1 for no more than 2 hours.
c) Bereadily accessible and located so the occupant can see the control.
Exception to clause 7.2.1.2 (c): The required control device may be remotely installed if required for reasons of safety or security. A remotely located device shall have a pilot light indicator as part of or next to the control device and shall be clearly labeled to identify the controlled lighting.
7.2.1.3 Control in Day lighted areas Luminaries in day lighted areas greater than 25m? (250 ft?) shall be equipped with either a manual or automatic control device that:
a) Is capable of reducing the light output of the luminaries in the day lighted areas by at least 50%, and b) Controls only the luminaries located entirely within the day lighted area.
7.2.1.4 Exterior Lighting Control Lighting for all exterior applications not exempted in clause 7.3.4 shall be controlled by a photo sensor or astronomical time switch that is capable of automatically turning off the exterior lighting when daylight is available or the lighting is not required.
7.2.1.5 Additional control The following lighting applications shall be equipped with a control device to control such lighting independently of general lighting:
a) Display/Accent Lighting: Display or accent lighting greater than 300m? (3,000 ft’) area shall have a separate control device b) Case Lighting: Lighting in cases used for display purposes greater than 300m? (3,000 ft’) area shall be equipped with a separate control device.
c) Hotel and Motel Guest Room Lighting: Hotel and motel guest rooms and guest suites shall have a master control device at the main room entry that controls all permanently installed luminaries and switched receptacles.
d) Task Lighting: Supplemental task lighting including permanently installed under shelf or under cabinet lighting shall have a control device integral to the luminaries or be controlled by a wall-mounted control device provided the control device compiles with clause 7.2.1.2 (c) e) Non-visual Lighting: Lighting for non-visual applications, such as plant growth and food-warming, shall be equipped with a separate control device.
f) Demonstration Lighting: Lighting equipment that is for sale or for demonstrations in lighting education shall be equipped with a separate control device accessible only to authorized personnel.
7.2.2 Signage/ Advertising Signage Internally-illuminated exit signs shall not exceed 5W/ft2. The lighting power density in case of signage / advertisement signage should not exceed 5 W/ft for internally illuminated signage and 2.5 W/f for externally illuminated signage. They all shall use LEDs
7.2.3 Exterior Building Grounds Lighting Lighting for exterior building grounds luminaries which operate at greater than 1OOW shall contain lamps having a minimum efficacy of 60 lm/W, LED type unless the luminaries is controlled by a motion sensor or exempt under clause 7.1.
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7.3 Perspective Requirements
7.3.1 Interior Lighting Power The installed interior lighting power for a building separately metered or permitted portion of a building shall be calculated in accordance with clause 7.3.4 and shall not exceed the interior lighting power allowance determined in accordance with either clause 7.3.2 or clause 7.3.3. Tradeoffs of interior lighting power allowance among portions of the building for which a different method of calculation has been used are not permitted.
Exception to clause 7.3: The following lighting equipment and applications shall not be considered when determining the interior lighting power allowance, nor shall the wattage for such lighting be included in the installed interior lighting power. However, any such lighting shall not be exempt unless it is an addition to general lighting and is controlled by an independent control device.
a) Display or accent lighting that is an essential element for the function performed in galleries, muscums, and monuments b) Lighting that is integral to equipment or instrumentation and is installed by its manufacturer.
c) Lighting specifically designed for medical or dental procedures and lighting integral to medical equipment.
d) Lighting integral to food warming and food preparation equipment e) Lighting for plant growth or maintenance f) Lighting in spaces specifically designed for use by the visually impaired.
g) Lighting in retail display windows, provided the display area is enclosed by ceiling-height partitions h) Lighting in interior spaces that have been specifically designated as a registered interior historic landmark.
i) _ Lighting that is an integral part of signage / advertising signage Jj) Lighting that is for sale or lighting educational demonstration systems k) _ Lighting for theatrical purposes, including performance, stage, and film or video production 1) Athletic playing areas with permanent facilities for television broadcasting.
7.3.2 Building Area Method Determination of interior lighting power allowance (watts) by the building area method shall be in accordance with the following:
a) Determine the allowed lighting power density from Table 7.1 for each appropriate building area type.
b) Calculate the gross lighted floor area for each building area type.
c) The interior lighting power allowance is the sum of the products of the gross lighted floor area of each building area times the allowed lighting power density for that building area types.
Table 7.1: Interior Lighting Power-Building Area Method (LPD- Lighting Power Density) Building Area Type LPD Building Area Type LPD (Wim?) (Wim?)
Automotive facility 9.7 Multifamily Residential 75 Convention Centre 12.9 Museum 11.8 Dining: Bar Lounge/Leisure 14.0 Office 10.8 Dining: Cafeteria/Fast Food 15.1 Parking Garage 3.2 Dining: Family 17.2 Performing Arts Theater 17.2 Dormitory/Hostel 10.8 Police/Fire station 10.8 Gymnasium 11.8 Post Oftice/Town Hall 11.8 15 Healthcare-clinic 10.8 Religious Building 14.0 Hospital/Health Care 12.9 Retail/Mall 16.1 Hotel 10.8 School/University 14.0 Library 14.0 Sports Arena 11.8 Manufacturing facility 14.0 Transportation 10.8 Motel 10.8 Warehouse 8.6 Motion Picture Theater 12.9 Workshop 15.1 In cases where both a general building area type and a specific building area type are listed, the specific building area type shall apply.
7.3.3 Space Function Method Determination of interior lighting power allowance (watts) by the space function method shall be in accordance with the following:
a) Determine the appropriate building type from Table 7.2 and the allowed lighting power density.
b) For each space enclosed by partitions 80% or greater than ceiling height, determine the gross interior floor area by measuring to the center of the partition wall. Include the floor area of balconies or other projections. Retail spaces do not have to comply with the 80% partition height requirements.
c) The interior lighting power allowance is the sum of the lighting power allowances for all spaces. The lighting power allowance for a space is the product of the gross lighted floor area of the space times the allowed lighting power density for that space.
Table 7.2: Interior Lighting Power-Space Function Method Space Function LPD Space Function LPD (Wim?) (Wim?)
Office-enclosed 11.8 ¢ For Reading Arca 12.9 Office-open plan 11.8 Hospital Conference/Meeting/Multipurpose 14.0 ¢ For Emergency 29.1 Classroom/Lecture/Training 15.1 ¢ For Recovery 8.6 Lobby* 14.0 ¢ For Nurse Station 10.8 ¢ For Hotel 11.8 ¢ Por Exam Treatment 16.1 ¢ For Performing Arts Theater Do: ¢ For Pharmacy 12.9 ¢ For Motion Picture Theater 11.8 ¢ For Patient Room 7S Audience/Seating Area* o7 ¢ For Operating Room 23.7 ¢ Por Gymnasium 4.3 ¢ For Nursery 6.5 ¢ For Convention Center 75 ¢ For Medical supply 15.1 ¢ For Religious Buildings 18.3 ¢ For Physical Therapy 9.7 ¢ For sports Arena 43 ¢ For Radiology 4.3 ¢ For Performing Arts Theater 28.0 ¢ For Laundry — Washing 6.5 ¢ For Motion Picture Theatre 12.9 Automotive — Service Repair 7S ¢ For Transportation 5.4 Manufacturing facility Attrium-first three floors 6.5 ¢ For Low Bay(<8m ceiling) 12.9 Attritum-each additional floor 2.2 ¢ For High Bay (>8m ceiling) 18.3 Lounge/Recreation 12.9 ¢ For Detailed Manufacturing 22.6 ¢ For Hospital 8.6 ¢ For Equipment Room 12.9 e Dining Area* o7 ¢ For Control Room 5.4 For Hotel 14.0 ¢ Hotel/Motel Guest rooms 11.8 16 ¢ For Motel 12.9 ¢ Dormitory — Living Quarters 11.8 ¢ For Bar Lounge/Leisure Dining 15.1 Museum ¢ For family dining 22.6 * For general exhibition 10.8 ¢ Food Preparation 12.9 ° For Restoration 18.3 * For Hotel 14.0 * Hotel/Motel Guest rooms 11.8 ¢ For Motel 12.9 ¢ Dormitory — Living Quarters 11.8 ¢ For Bar Lounge/Leisure Dining 15.1 Museum ¢ For family dining 22.6 * For general exhibition 10.8 ¢ Food Preparation 12.9 ¢ For Restoration 18.3 Laboratory 15.1 Bank Office-Banking Activity Area 16.1 Rest rooms 9.7 Retail Dressing/Locker/Fitting Room 6.5 * For Sales Area 18.3 ¢ Corridor/Transition* 5.4 ¢ For Mail Concourse 18.3 ¢ For Hospital 10.8 Sports Arena ¢ For Manufacturing Facility 5.4 * For Ring Sports Area 29.1 ¢ Stairs-active 6.5 e For Court Sports Area 24.8 ¢ Active Storage* 8.6 * For Indoor Field Area 15.1 ¢ For Hospital 9.7 Warehouse Inactive Storage* 3.2 ° For Fine Material Storage 15.1 ¢« ForMuseum 8.6 * For Medium/ Bulky Material Storage 9.7 Electrical /Mechanical Facility 16.1 Parking Garage-Garage Area Dd Workshop 20.5 Transportation Convention Center-Exhibit Space 14.0 ° For Airport-Concourse 6.5 Library ° For Air/Train/Bus-Baggage Area 10.8 ¢ For Card File & Cataloging 11.8 ¢ For Ticket Counter Terminal 16.1 ¢ For Stacks 18.3 *Por all facilities except the following
7.3.4 Installed Interior Lighting Power The installed interior lighting power calculated for compliance with 7.3 shall include all power used by the luminaires, including lamps, ballasts, current regulators, and control devices except as specifically exempted in clause 7.1.
Exception to clause 7.3.4: If two or more independently operation lighting systems in a space are controlled to prevent simultaneous user operation, the interior lighting power shall be based solely on the lighting system with the highest power.
7.3.4.1 Luminaire Wattage Luminaire wattage incorporated into the installed interior lighting power shall be determined in accordance with the following:
a) The wattage of incandescent luminaries with medium base sockets and not containing permanently installed ballasts shall be the maximum labeled wattage of the luminaires b) The wattage of luminaries containing permanently installed ballasts shall be the operating input wattage of the specified lamp/ballast combination based on values from manufacturers’ catalogs or values from independent testing laboratory reports c) The wattage of all other miscellaneous luminaire types not described in (a) or (b) shall be the specified wattage of the luminaires d) The wattage of lighting track, plug-in bus way, and flexible-lighting systems that allow the addition 17 and/ or relocation of luminaires without altering the wiring of the system shall be the larger of the specified wattage of the luminaires included in the system or 135W/m(45 W/ft).Systems with integral overload protection, such as fuses or circuit breakers, shall be rated at 100% of the maximum rated load of the limiting device
7.3.5 Exterior Lighting Power For building exterior lighting applications specified in Table 7.3, the connected lighting power shall not exceed the specified lighting power limits specified for each of these applications. Trade-offs between applications is not permitted. Exterior lighting for all other applications (except those included in the Exceptions to 7.3.4) shall comply with the requirements of 7.2.3.
Table 7.3: Exterior Building lighting Power Exterior Lighting Applications Power Limits Building entrance (with canopy) 13 W/m? (1.3W/ft?) of canopied area Building entrance (without canopy) 90W/m? (30 W/lin f) of the door width Building exit 60W/m? (20 W/lin f) of the door width Building facades 2 W/m? (0.2 W/ft?) of vertical facade area Exception to clause 7.3.5: Lighting used for the following exterior application is exempt when equipped with an independent control device:
a) Specialized signal, directional, and marker lighting associated with transportation b) Lighting used to highlight features of public monuments and registered historic landmark structures or buildings c) Lighting thatis specifically designated as required by a health or life safety statute, ordinance, or regulation d) Lighting that is specifically designated as required by a health or life safety statute, ordinance, or regulation
7.3.6 Lighting Type and Efficiency All fluorescent tube lights shall be of energy efficient or BEE star rated as specified in clause 3.1.4.6. No incandescent bulb shall be used for ordinary lighting applications.
8. Electrical Power
8.1 General Electric equipment and systems shall comply with the mandatory requirements of clause 8.2.
8.2 Mandatory Requirements
8.2.1 Transformers
8.2.1.1 | Maximum Allowable Power Transformer Losses Power transformers of the proper ratings and design must be selected to satisfy the minimum acceptable efficiency at 50% and full load rating. In addition, the transformer must be selected such that it minimizes the total of its initial cost in addition to the present value of the cost of its total lost energy while serving its estimated loads during its respective life span. All distribution transformers shall comply with the provisions of clause 3.1.4.6.
Table 8.1: Dry Type Transformers- total losses for dry type transformers should conform as per the draft standard of Indian standard IS 2026: Part 11 2007 Rating KVA Max. Losses at Max. Losses at Total losses at Total losses at 50% loading KW* 100% loadingKW* 50% loading KW* rated load KW* Up to 22 KV class 33KV class 100 0.94 2.4 1.12 2.4 160 1.29 3.3 1.42 3.3 200 LS 3.8 1.75 4 18 250 1.7 4.32 1.97 4.6 315 2 5.04 24 5.4 400 2.38 6.04 2.9 6.8 500 2.8 7.25 3.3 7.8 630 3.34 8.82 3.95 9.2 800 3.88 10.24 4.05 11.4 1000 4.5 12 5.3 12.8 1250 5.19 13.87 6.25 14.5 1600 6.32 16.8 75 18 2000 7.5 20 8.88 21.4 2500 9.25 24.75 10.75 26.5 Table 8.2: Oil Filled Transformers- total losses for oil filled transformers should conform as per the following table as specified in Central Electricity Authority norms Rating VA Max. Losses at Max. Losses at Total losses at Total losses at 50% loading W* 100% loading W* 50% loading W* rated load W* Up to 11 KY class 33KV class 100 520 1800 560 1820 160 770 2200 780 2580 200 890 2700 900 3000 250 1050 3320 - 7 315 1100 3630 1300 4300 400 1450 4630 1520 5100 500 1600 5500 1950 6450 630 2000 6640 2300 7600 1000 3000 9800 3450 11350 1250 3600 12000 4000 13250 1600 4500 15000 4850 16000 2000 5400 18400 5700 18500 2500 6500 22500 7050 23000 For Tables 8.1, 8.2:* Total loss values given in above table are applicable for thermal classes E,B&F and have component of the load loss at reference temperature according to clause 17 of IS 2026: Part 11, i.e., average winding temperature rise as given in column 2 of Table 8.2 plus 300C. An increase of 7% on total for thermal class His allowed.
8.1.1.2 | Measurement and Reporting of Transformer Losses All measurement of losses shall be carried out by using calibrated digital meters of class 0.5 or better accuracy and certified by the manufacturer. All transformers of capacity of 500 kVA and above would be equipped with additional metering class current transformers (CTs) and potential transformers (PTs) additional to requirements of utilities so that periodic loss monitoring study may be carried out.
8.2.2 Energy Efficient Motors Motors shall comply with the following:
a) All permanently wired motors of 0.375 kW or more serving the building and -expected to operate more than 1,500 hours per year and all permanently wired polyphase motors of 50 kW or more serving the building and expected to operate more than 500 hours per year shall have a minimum acceptable nominal full load motor efficiency not less than IS 12615 for energy efficient motors;
b) Cc) d) e) Ly) g) 19 Motors of horsepower differing from those listed in the table shall have efficiency greater than that of the next listed kW motor;
Motor horsepower ratings shall not exceed 20% of the calculated maximum load being served;
Motor nameplates shall list the nominal full- load motor efficiencies and the full- load power factor;
Motor users should insist on proper rewinding practices for any rewound motors. If the proper rewinding practices cannot be assured, the damaged motor should be replaced with a new, efficient one rather than suffer the significant efficiency penalty associated with typical rewind practices;
Certificates shall be obtained and kept on record indicating the motor efficiency. Whenever a motor is rewound, appropriate measures shall be taken so that the core characteristics of the motor is not lost due to thermal and mechanical stress during removal of damaged parts. After rewinding, a new efficiency test shall be performed and a similar record shall be maintained;
All motors and pump sets shall comply with the provisions of clause 3.1.4.6.
8.2.3 Power Factor Correction All electricity supplies exceeding 100 A, 3 phases shall maintain their power factor between 0.95 lag and unity at the point of connection.
8.2.4 Check — Metering and Monitoring a) b) Cc) Services exceeding 120 kVA shall have permanently installed electrical metering to record demand (kVA), energy (kWh), and total power factor. The metering shall also display current (in each phase and the neutral), voltage (between phases and between each phase and neutral), and total harmonic distortion (THD) as a percentage of the current Service not exceeding 120 kVA but over 65 KVA shall have permanently installed electric metering to record demand (kW), energy (kWh), and total power factor (or kVARh) Services not exceeding 65 kVA shall have permanently installed electrical metering to record energy (kWh)
8.2.5 Power Distribution Systems
8.2.5.1 Power Distribution System Losses The power cabling shall be adequately sized as to maintain the distribution losses not to exceed 1% of the total power usage. Record of design calculation for the losses shall be maintained.
Compliance
1. It will also be mandatory to implement the Punjab Energy Conservation Building Code (Punjab ECBC) in Govt. Buildings / Building Complexes including buildings / building complexes of Municipalities / Local Bodies, Boards, Corporations, Govt. Aided Institutions and Other Autonomous Bodies of the Govt. of Punjab.
The provisions of Punjab ECBC shall be integrated for effective implementation in the Building Byelaws, specifications, relevant manuals by the concerned authorities / agencies and local bodies.
Accordingly, Building Plan sanctions by Govt. Departments / Agencies / Municipal Corporations / Councils / Committees / Nagar Panchayats / Punjab Urban Development Authority / other Urban Development Authorities without Punjab ECBC implementation shall not be allowed.
All the line departments; Housing and Urban Development, Local Govt., Town and Country Planning, PWD (B&R), Water Supply & Sanitation, Architecture, Punjab Urban Development Authority and other Urban Development Authorities will amend their rules / bye-laws within a period of six months from the date of issue of this order to ensure the implementation of the Punjab ECBC.
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4. These departments / authorities will also designate Nodal Officer to monitor and report the progress of enforcement of the State Government Decisions to the Department of New & Renewable Energy, Govt. of Punjab on quarterly basis.
Powers Govt. of Punjab, Department of New & Renewable Energy can amend / relax / make addition / interpret / provisions under this "Punjab ECBC" with due approval of Chief Minister.
It shall come into force from the date of its publication in the Official Gazette.
Sd/- (ANIRUDH TEWARD IAS Chandigarh Principal Secretary to Government of Punjab, The 21st June, 2016 Department of New & Renewable Energy.
9. Appendix A: Definitions, Abbreviations and Acronyms
9.1 General Certain terms, abbreviations, and acronyms are defined in this section for the purposes of this code. These definitions are applicable to all sections of this code. Terms that are not defined shall have their ordinarily accepted meanings within the context in which they are used. Webster's Third New International Dictionary of the English Language, Unabridged, copyright 1986, shall be considered as providing ordinarily accepted meanings.
9.2 Definitions Addition: an extension or increase in floor area or height of a building outside of the existing building envelope Alteration: any change, rearrangement, replacement, or addition to a building or its systems and equipment; any modification in construction or building equipment Annuai fuel utilization efficiency (AFUE): an efficiency description of the ratio of annual output energy to annual input energy as developed in accordance with requirements of U.S.Department of Energy (DOE) 10CFR Part 430 Area: see roof and wall, conditioned floor, day lighted, fagade, fenestration, lighted floor Astronomical time switch: an automatic time switch that makes an adjustment for the length of the day as it varies over the year Authority having jurisdiction: the agency or agent responsible for enforcing this standard Automatic: self-acting, operating by its own mechanism when actuated by some non-manual influence, such as a change in current strength, pressure, temperature, or mechanical configuration.
Automatic control device: a device capable of automatically turning loads off and on without manual intervention Balancing, air system: adjusting airflow rates through air distribution system devices, such as fans and diffusers, by manually adjusting the position of dampers, splitters vanes, extractors, etc., or by using automatic control devices, such as constant air volume or variable air volume boxes