This proposal does not change code requirements, only updates definitions and reduces redundancy. Exhaust air and outdoor air connections to isolation areas where the fan system to which they connect is not greater than 5,000 cfm (2360 L/s). Was manufactured on or after April 16, 2015. More efficient HVAC performance in accordance with, Reduced lighting power in accordance with, Enhanced lighting controls in accordance with, On-site supply of renewable energy in accordance with, Provision of a dedicated outdoor air system for certain HVAC equipment in accordance with, High-efficiency service water heating in accordance with, Enhanced envelope performance in accordance with, Reduced air infiltration in accordance with. The efficiency shall be verified through certification under an approved certification program or, where a certification program does not exist, the equipment efficiency ratings shall be supported by data furnished by the manufacturer. Joints and seams shall comply with Section 603.9 of the International Mechanical Code. (Note: this is for Climate Zones … 2.2. C403.7.4 Energy Recovery Ventilation Systems. Fans that are intended to operate only during emergency conditions. Exceptions: The following motors are not required to comply with this section. Motors in the airstream within fan coils and terminal units that only provide heating to the space served. Chilled water systems with a total cooling capacity, less cooling capacity provided with air economizer, of 1,320,000 Btu/h (110 ton) for Local Water-cooled Chilled-water Systems, or 1,720,000 (143.3 ton) for Air-cooled Chilled-water Systems or District Chilled-Water Systems. Occupant sensor controls for all other spaces specified in Section C405.2.1 shall comply with the following: They shall be manual on or controlled to automatically turn on the lighting to not more than 50-percent power. IPLV = Value as specified in Table C403.3.2(7). The certification requirements do not apply to field-erected cooling towers. Name of individual completing the compliance report. This section covers the minimum efficiency of, and controls for, service water-heating equipment and insulation of service hot water piping. NR = No Requirement, PF = Projection Factor. Section C407, Total Building Performance, of the 2018 IECC does have a few mandatory requirements, and fortunately, section C402.4 is not one of them. About IECC 2018 The International Energy Conservation Code (IECC) 2018 is a residential and commercial building energy code. Each cooling system listed in Table C403.8.5.1 shall be designed to vary the indoor fan airflow as a function of load and shall comply with the following requirements: For SI: 1 British thermal unit per hour = 0.2931 W; 1 hp = 0.746 kW. Pump flow shall be controlled to maintain one control valve nearly wide open or to satisfy the minimum differential pressure. TBFA = Total building floor area is the sum of all floor areas included in the lighting power allowance calculation in Section C405.3.2. Where the proposed vertical glazing area is less than or equal to the maximum vertical glazing area allowed by Section C402.4.1, the value of D (Excess Vertical Glazing Value) shall be zero. safety factors are provided than in the proposed design. Individual fenestration products from different product categories listed in Table C402.4 shall not be combined in calculating the area-weighted average U-factor. "SEW" indicates orientations other than "N." For buildings in the southern hemisphere, reverse south and north. (Error code: 273), The provisions in this chapter are applicable to commercial, Insulation in building thermal envelope opaque assemblies shall comply with Sections. Devices with selectable setpoints shall be capable of being set to within 2°F and 2 Btu/lb of the setpoint listed. Occupant sensor controls in open plan office spaces less than 300 square feet (28 m2) in area shall comply with Section C405.2.1.1. Piping insulation exposed to the weather shall be protected from damage, including that caused by sunlight, moisture, equipment maintenance and wind, and shall provide shielding from solar radiation that can cause degradation of the material. Continuously insulated roof assemblies where the thickness of insulation varies 1 inch (25 mm) or less and where the area-weighted, Where tapered insulation is used with insulation entirely above deck, the. Fans that are part of equipment covered in, Fans included in an equipment package certified by an. Refrigeration equipment shall have an energy use in kWh/day not greater than the values of Tables, Ducts, plenums, piping and other elements that are part of an HVAC system shall be constructed and insulated in accordance with Sections, Ductwork shall be constructed and erected in accordance with the, Ducts and plenums designed to operate at a static pressure greater than 2 inches water gauge (w.g.) Longitudinal and transverse joints, seams and connections of supply and return ducts operating at a static pressure less than or equal to 2 inches water gauge (w.g.) An air or water economizer shall be provided for the following cooling systems: Individual fan systems with cooling capacity greater than or equal to 54,000 Btu/h (15.8 kW) in buildings having other than a Group R occupancy. Have a heating system capacity not greater than (17,000 Btu/hr) (5 kW) and a heating thermostat setpoint that is restricted to not more than 50°F (10°C). Mode of operation upon a loss of power and restoration of power. The minimum thermal resistance (R-value) of materials installed in the wall cavity between framing members and continuously on the walls shall be as specified in Table C402.1.3, based on framing type and construction materials used in the wall assembly. Energy prices shall be taken from a source approved by the code official, such as the Department of Energy, Energy Information Administration's State Energy Price and Expenditure Report. Exception: Full automatic-on controls shall be permitted to control lighting in public corridors, stairways, restrooms, primary building entrance areas and lobbies, and areas where manual-on operation would endanger the safety or security of the room or building occupants. Manual override switch allows only the lights in the enclosed space where the override switch is located to turn on or remain on until the next scheduled shutoff occurs. 2 above, as applicable. They shall have a clock capable of being programmed for not fewer than 7 days. For SI: °C = [(°F)-32]/1.8, L/s • kW = (gpm/hp)/(11.83), COP = (Btu/h • hp)/(2550.7). Other units including DX cooling units and chilled water units that control the space temperature by modulating the airflow to the space shall have modulating fan control. The output capacity of heating and cooling equipment shall be not greater than that of the smallest available equipment size that exceeds the loads calculated in accordance with Section C403.1.1. Direct makeup (auxiliary) air supply equal to or greater than 75 percent of the exhaust rate, heated not warmer than 2°F (1.1°C) above room setpoint, cooled to not cooler than 3°F (1.7°C) below room setpoint, with no humidification added, and no simultaneous heating and cooling used for dehumidification control. Quickly locate sections across your jurisdiction. Factory-installed piping within HVAC equipment tested and rated in accordance with a test procedure referenced by this code. Direct expansion (DX) and chilled water cooling units that control the capacity of the mechanical cooling directly based on space temperature shall have not fewer than two stages of fan control. Piping that is heat traced shall be insulated in accordance with Table C403.11.3 or the heat trace manufacturer's instructions. Exceptions: The following roofs and portions of roofs are exempt from the requirements of Table C402.3: Portions of the roof that include or are covered by the following: MINIMUM ROOF REFLECTANCE AND EMITTANCE OPTIONSa. Hydronic heat pumps connected to a common heat pump water loop with central devices for heat rejection and heat addition shall have controls that are configured to provide a heat pump water supply temperature deadband of not less than 20°F (11°C) between initiation of heat rejection and heat addition by the central devices. Exhaust airflow from a single isolation area of less than 10 percent of the design airflow of the exhaust system to which it connects. Energy codes are a subset of building codes, which establish baseline requirements and govern building … Lighting in spaces specifically designed for use by occupants with special lighting needs, including those with visual impairment and other medical and age-related issues. Ch. A tabletop water heater is a water heater that is enclosed in a rectangular cabinet with a flat top surface not more than 3 feet in height. Lighting equipment that is for sale or demonstration in lighting education. These motors shall have the means to adjust motor speed for either balancing or remote control. Where a variable speed drive is required by Item 3 of this Section, pump motor power input shall be not more than 30 percent of design wattage at 50 percent of the design water flow. Air temperature sensor failure/fault. In an enclosed space greater than 2,500 square feet (232 m2) in floor area, directly under a roof with not less than 75 percent of the ceiling area with a ceiling height greater than 15 feet (4572 mm), and used as an office, lobby, atrium, concourse, corridor, storage space, gymnasium/exercise center, convention center, automotive service area, space where manufacturing occurs, nonrefrigerated warehouse, retail store, distribution/sorting area, transportation depot or workshop, the total toplit daylight zone shall be not less than half the floor area and shall provide one of the following: A minimum skylight effective aperture of not less than 1 percent, determined in accordance with Equation 4-4. Deferred tests that cannot be performed at the time of report preparation because of climatic conditions. registered design professional or approved agency shall provide evidence of mechanical systems commissioning and completion in accordance with the provisions of the IECC. Where multiple pieces of water-heating equipment serve the building and the combined input rating of the water-heating equipment is 1,000,000 Btu/h (293 kW) or greater, the combined input-capacity-weighted-average thermal efficiency, Et, shall be not less than 90 percent. The total exterior lighting power allowance is the sum of the base site allowance plus the individual allowances for areas that are to be illuminated by lighting that is powered through the energy service for the building. Where an open-circuit cooling tower is used in conjunction with a separate heat exchanger to isolate the open-circuit cooling tower from the heat pump loop, heat loss shall be controlled by shutting down the circulation pump on the cooling tower loop. Air curtains and their controls shall comply with. The controls shall be configured so that general lighting power in each control zone is reduced by not less than 80 percent of the full zone general lighting power in a reasonably uniform illumination pattern within 20 minutes of all occupants leaving that control zone. Such rooms shall comply with all of the following: Exception: Fireplaces and stoves complying with Sections 901 through 905 of the International Mechanical Code, and Section 2111.14 of the International Building Code. The area controlled by the override switch shall not be limited to 5,000 square feet (465 m. 2.1. In a facility for the visually impaired (and, Automotive (see Vehicular maintenance area), In a chapel (and not used primarily by the, In a recreation room (and not used primarily, In an extra-high-bay area (greater than 50', In a low-bay area (less than 25' floor-to-. Controls for circulating hot water system pumps shall start the pump based on the identification of a demand for hot water within the occupancy. Lighting controlled from within dwelling units. (C)] of: For example, "VOP.RC.M" refers to the "vertical-open, remote-condensing, medium-temperature" equipment class. LPAnorm = Normal building lighting power allowance in watts calculated in accordance with Section C405.3.2 and reduced in accordance with Section C406.3 where Option 2 of Section C406.1 is used to comply with the requirements of Section C406. The use of area-weighted averages to comply with these requirements shall be permitted. The opaque portions of the building thermal envelope shall comply with the specific insulation requirements of, Roof solar reflectance and thermal emittance shall comply with, Fenestration in building envelope assemblies shall comply with, Air leakage of building envelope assemblies shall comply with, Those with a peak design rate of energy usage less than 3.4 Btu/h • ft, Are separate buildings with floor area not more than 500 square feet (50 m, Are intended to house electronic equipment with installed equipment power totaling not less than 7 watts per square foot (75 W/m. A = 0.00000014592 × (LIFT)4 - 0.0000346496 × (LIFT)3 + 0.00314196 × (LIFT)2 - 0.147199 × (LIFT) + 3.9302. The perimeter insulation shall extend downward from the top of the slab for the minimum distance shown in the table or to the top of the footing, whichever is less, or downward to not less than the bottom of the slab and then horizontally to the interior or exterior for the total distance shown in the table. Hourly variations in occupancy, illumination, receptacle loads, thermostat settings, mechanical ventilation, HVAC equipment availability, service hot water usage and any process loads. Exception: Where the slab-on-grade floor is greater than 24 inches (61 mm) below the finished exterior grade, perimeter insulation is not required. Daylight controlled lighting loads adjust to light level setpoints in response to available daylight. The walls, floors and ceilings that separate the enclosed room or space from conditioned spaces shall be sealed in accordance with. Air systems shall be balanced in a manner to first minimize throttling losses then, for fans with system power of greater than 1 hp (0.746 kW), fan speed shall be adjusted to meet design flow conditions. A guide to slab edge insulation install that meets the mandatory 2018 IECC code requirements C402.2.4 and R402.2.10. Construction document notes shall clearly indicate provisions for commissioning and completion requirements in accordance with this section and are permitted to refer to specifications for further requirements. Doorways shall have strip doors, curtains, spring-hinged doors or other method of minimizing infiltration when doors are open. Monitoring occupant activity to brighten or dim lighting when occupied or unoccupied, respectively. Daylight-responsive controls complying with Section C405.2.3.1 shall be provided to control the electric lights within daylight zones in the following spaces: Exceptions: Daylight responsive controls are not required for the following: LPAadj = Adjusted building interior lighting power allowance in watts. ICF proprietary and confidential. For insulation outside the stated conductivity range, the minimum thickness (T) shall be determined as follows: t = insulation thickness listed in the table for applicable fluid temperature and pipe size, K = conductivity of alternate material at mean rating temperature indicated for the applicable fluid temperature (Btu • in/h • ft2 • °F) and. Pressure drop of device at fan system design condition. For, The energy consumption of pools and permanent spas shall be controlled by the requirements in Sections, The electric power to all heaters shall be controlled by an on-off switch that is an integral part of the heater, mounted on the exterior of the heater, or external to and within 3 feet (914 mm) of the heater in a location with. The air leakage of fenestration assemblies shall meet the provisions of Table C402.5.2. A sensitivity analysis of energy consumption where each of the input parameters is varied from half to double the value assumed. Class III facilities consist of club, amateur league and high-school facilities with seating for 2,000 or fewer spectators. U Wall = Area-weighted average U-value of all above-grade wall assemblies. Occupant sensor controls in all other open plan office spaces shall comply with all of the following: Each area of the building that is not provided with occupant sensor controls complying with Section C405.2.1.1 shall be provided with time-switch controls complying with Section C405.2.2.1. The wattage limit of the permanent current-limiting The following is a list of minimum unit sizes that require an economizer, depending on which International Energy Conservation Code (IECC) the local code follows. The perimeter insulation shall be placed on the outside of the foundation or on the inside of the foundation wall. Integral to equipment or instrumentation and installed by its manufacturer. k = the upper value of the conductivity range listed in the table for the applicable fluid temperature. The dampers shall have an air leakage rate not greater than 4 cfm/ft2 (20.3 L/s • m2) of damper surface area at 1.0 inch water gauge (249 Pa) and shall be labeled by an approved agency when tested in accordance with AMCA 500D for such purpose. Commercial buildings or portions of commercial buildings enclosing Group R occupancies shall use the R-values from the "Group R" column of Table C402.1.3. Paths for air leakage from the The walls, floors and ceilings that separate the enclosed room or space from conditioned spaces shall be insulated to be not less than equivalent to the insulation requirement of below-grade walls as specified in, 2.2. Developed areas of national parks, state parks, forest. 5 Existing Buildings . Gravity and thermo-syphon circulation systems shall be prohibited. Exception: Economizers on variable air volume (VAV) systems that cause zone level heating to increase because of a reduction in supply air temperature. Surface critical code sections based on your project inputs. The system return pipe shall be a dedicated return pipe or a cold water supply pipe. If an economizer is required in accordance with, Where potable water from the DWHR unit supplies not less than one shower and not greater than two showers, of which the drain water from the same showers flows through the DWHR unit then SWHF = [1, Where potable water from the DWHR unit supplies not less than three showers and not greater than four showers, of which the drain water from the same showers flows through the DWHR unit then SWHF = [1, Where potable water from the DWHR unit supplies not less than five showers and not greater than six showers, of which the drain water from the same showers flows through the DWHR unit, then SWHF = [1. For spaces in which lighting is specified to be installed in addition to the general lighting for the purpose of decorative appearance or for highlighting art or exhibits, provided that the additional lighting power shall be not more than 0.9 W/ft. Table C407.5.1(1) shall include by reference all notes contained in Table C402.1.4. Select the path that corresponds to the proposed design heat source: electric resistance, heat pump (including air source and water source), or fuel fired. Commercial buildings or portions of commercial buildings enclosing occupancies other than Group R shall use the R-values from the "All other" column of Table C402.1.3. Not less than 50 percent of all replacement air shall be transfer air that would otherwise be exhausted. The efficiency shall be verified through certification under an approved certification program or, where a certification program does not exist, the equipment efficiency ratings shall be supported by data furnished by the motor manufacturer. Functions to be tested including, but not limited to, calibrations and economizer controls. The switch only operates lighting in the enclosed space in which the switch is located. Sealing shall allow for expansion, contraction and mechanical vibration. FL Table = (F-factor specified in Table C402.1.4) x Perimeter length. Vestibule heating and cooling systems shall be controlled by a thermostat located in the vestibule configured to limit heating to a temperature not greater than 60°F (16°C) and cooling to a temperature not less than 85°F (29°C). Materials in Items 1 through 16 shall be deemed to comply with this section, provided that joints are sealed and materials are installed as air barriers in accordance with the manufacturer's instructions. WARM-AIR FURNACES AND COMBINATION WARM-AIR FURNACES/AIR-CONDITIONING UNITS, WARM-AIR DUCT FURNACES AND UNIT HEATERS, MINIMUM EFFICIENCY REQUIREMENTS, MINIMUM EFFICIENCY REQUIREMENTS: GAS- AND OIL-FIRED BOILERS, MINIMUM EFFICIENCY REQUIREMENTS: CONDENSING UNITS, ELECTRICALLY OPERATED, WATER CHILLING PACKAGES — EFFICIENCY REQUIREMENTSa, b, d, MINIMUM EFFICIENCY REQUIREMENTS: HEAT REJECTION EQUIPMENT. Perimeter spaces shall be those located closer than 15 feet (4572 mm) from an, Separate thermal blocks shall be assumed for spaces adjacent to glazed exterior walls: a separate, Separate thermal blocks shall be assumed for spaces having floors that are in contact with the ground or exposed to ambient conditions from, Separate thermal blocks shall be assumed for spaces having exterior ceiling or roof assemblies from. Testing shall affirm winter and summer design conditions and full outside air conditions. At minimum speed the fan system shall draw not more than 30 percent of the power at full fan speed. Where the design temperature difference between the interior and exterior of the duct or plenum is not greater than 15°F (8°C). 3.2. Functional performance testing specified in Sections, HVAC and service water-heating control systems shall be tested to document that control devices, components, equipment and systems are calibrated and adjusted and operate in accordance with approved plans and specifications. 6.2. Ducts, air handlers and filter boxes shall be sealed. WALK-IN COOLER AND FREEZER DISPLAY DOOR EFFICIENCY REQUIREMENTSa, WALK-IN COOLER AND FREEZER NONDISPLAY DOOR EFFICIENCY REQUIREMENTSa, WALK-IN COOLER AND FREEZER REFRIGERATION SYSTEM EFFICIENCY REQUIREMENTS. INTERIOR LIGHTING POWER ALLOWANCES: BUILDING AREA METHOD, INTERIOR LIGHTING POWER ALLOWANCES: SPACE-BY-SPACE METHOD. Each isolation area shall be equipped with isolation devices and controls configured to automatically shut off the supply of conditioned air and outdoor air to and exhaust air from the isolation area. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 liquid ounce = 0.030 L, 1 gallon = 128 ounces. Demand ventilation systems on not less than 75 percent of the exhaust air that are configured to provide not less than a 50-percent reduction in exhaust and replacement air system airflow rates, including controls necessary to modulate airflow in response to appliance operation and to maintain full capture and containment of smoke, effluent and combustion products during cooking and idle. The performance rating calculated with and without the exceptional calculation method. The controls shall be configured such that any daylight responsive control will activate open plan office space general lighting or control zone general lighting only when occupancy for the same area is detected. SPECIFICATIONS FOR THE STANDARD REFERENCE DESIGN HVAC SYSTEM DESCRIPTIONS. Exception: The thermal resistance of airspaces located on the exterior side of the continuous air barrier and adjacent to and behind the exterior wall-covering material shall be determined in accordance with ASTM C1363 modified with an airflow entering the bottom and exiting the top of the airspace at an air movement rate of not less than 70 mm/second. Exception: Fans with fan motors of 1 hp (0.74 kW) or less are not required to be provided with a means for air balancing. A single piece of equipment providing both heating and cooling shall satisfy this provision for one function with the capacity for the other function as small as possible, within available equipment options. Single-phase, air-cooled heat pumps less than 65,000 Btu/h are regulated by NAECA. Where heated slabs are below grade, below-grade walls shall comply with the. The 2018 IECC voting period ended in November of 2017. The vertical fenestration area, not including opaque doors and opaque spandrel panels, shall be not greater than 30 percent of the gross above-grade wall area. Equipment class designations consist of a combination [in sequential order separated by periods (AAA).(BB). Chilled water systems with a total cooling capacity, less cooling capacity provided with air economizers, as specified in, Individual fan systems not served by chilled water for buildings located in. Where sleeping units are excluded from lighting power calculations by application of, Where dwelling units are excluded from lighting power calculations by application of. Compliance based on total building performance requires that a proposed building (proposed design) be shown to have an annual energy cost that is less than or equal to the annual energy cost of the standard reference design. The efficiency shall be verified through certification under an approved certification program or, where a certification program does not exist, the equipment efficiency ratings shall be supported by data furnished by the transformer manufacturer. 0.25 inch w.c./100 feet of vertical duct exceeding 75 feet. Exceptions: The following transformers are exempt: MINIMUM NOMINAL EFFICIENCY LEVELS FOR 10 CFR 431 LOW-VOLTAGE DRY-TYPE DISTRIBUTION TRANSFORMERS. Direct sunlight is not blocked from hitting the roof fenestration assembly at the peak solar angle on the summer solstice by buildings or geological formations. Climatic conditions required for performance of the deferred tests. Air economizers shall be configured to automatically reduce outdoor air intake to the design minimum outdoor air quantity when outdoor air intake will not reduce cooling energy usage. A continuous air barrier for the opaque building envelope shall comply with, Stairway enclosures, elevator shaft vents and other outdoor air intakes and exhaust openings integral to the building envelope shall be provided with dampers in accordance with. At altitudes substantially different than sea level, the fixed enthalpy limit shall be set to the enthalpy value at 75°F and 50-percent relative humidity. Operate the terminal fan and heating coil without primary air. Thermostatic setback controls shall be configured to set back or temporarily operate the system to maintain zone temperatures down to 55°F (13°C) or up to 85°F (29°C). For SI: 1 cfm = 0.4719 L/s; 1 foot = 305 mm. The sub-cooled liquid temperature shall be controlled at a maximum temperature setpoint of 50°F (10°C) at the exit of the subcooler using either compressor economizer (interstage) ports or a separate compressor suction group operating at a saturated suction temperature of 18°F (-7.8°C) or higher. Perimeter insulation is not required to extend below the bottom of the slab. Sequences of operation shall be functionally tested to document they operate in accordance with. Site-assembled or site-constructed walk-in coolers and walk-in freezers shall comply with the following: Automatic door closers shall be provided that fully close walk-in doors that have been closed to within 1 inch (25 mm) of full closure. Such heating systems shall be controlled by an occupancy sensing device or a timer switch, so that the system is automatically de-energized when occupants are not present. 2.2. They shall have program backup capabilities that prevent the loss of program and time settings for a period of not less than 10 hours in the event that power is interrupted. FL represents the full-load performance requirements and IPLV the part-load performance requirements. Construction document. Daylight responsive controls shall comply with this section and Section C405.2.3.1. Exception: Controls are not required for the following: Liquid subcooling shall be provided for all low-temperature compressor systems with a design cooling capacity equal to or greater than 100,000 Btu/hr (29.3 kW) with a design-saturated suction temperature of -10°F (-23°C) or lower. Building thermal envelope opaque assemblies shall meet the requirements of Sections C402.2 and C402.4 based on the climate zone specified in Chapter 3. An alternate compliance path is described in WSEC Figure 14A and Chapter 4 – Systems Analysis. Where dynamic glazing is intended to satisfy the SHGC and VT requirements of Table C402.4, the ratio of the higher to lower labeled SHGC shall be greater than or equal to 2.4, and the dynamic glazing shall be automatically controlled to modulate the amount of solar gain into the space in multiple steps. The report shall be organized with mechanical system and service hot water system findings in separate sections to allow independent review. Central systems and plants shall be provided with controls and devices that will allow system and equipment operation for any length of time while serving only the smallest isolation area served by the system or plant. Outdoor heated pools and outdoor permanent spas shall be provided with a vapor-retardant cover or other approved vapor-retardant means. Cost Impact: Will not increase the cost of construction. Evaporative condensers intended for use with halocarbon refrigerants other than R-507A shall meet the minimum efficiency requirements listed in this table with R-507A as the test fluid. Disposition of deficiencies found during testing, including details of corrective measures used or proposed. For SI: 1 British thermal unit per hour = 0.2931 W. MINIMUM EFFICIENCY REQUIREMENTS: ELECTRICALLY OPERATED UNITARY AND APPLIED HEAT PUMPS. Per the 2018 IECC, Section C401.2: Using the requirements of ASHRAE 90.1-2016. 3.1. The temperature shall be reset by not less than 25 percent of the design supply-to-return water temperature difference. Pumps that operate solar- and waste-heat-recovery pool heating systems. serving, 2018 Illinois Energy Conservation Code Standards for Privately Funded Commercial Facilities and Standards for Residential Buildings, Chapter 4 [CE] Commercial Energy Efficiency, C401.2.1 Application to Replacement Fenestration Products, C402.1.4.1 Thermal Resistance of Cold-Formed Steel Walls, C402.1.5 Component Performance Alternative, C402.2 Specific Building Thermal Envelope Insulation Requirements (Prescriptive), C402.2.4 Slabs-On-Grade Perimeter Insulation, C402.2.6 Insulation of Radiant Heating Systems, C402.3 Roof Solar Reflectance and Thermal Emittance, C402.4.1.1 Increased Vertical Fenestration Area With Daylight Responsive Controls, C402.4.1.2 Increased Skylight Area With Daylight Responsive Controls, C402.4.2 Minimum Skylight Fenestration Area, C402.4.2.1 Lighting Controls in Toplit Daylight Zones, C402.5 Air Leakage—Thermal Envelope (Mandatory), C402.5.1.2 Air Barrier Compliance Options, C402.5.3 Rooms Containing Fuel-Burning Appliances, C402.5.4 Doors and Access Openings to Shafts, Chutes, Stairways and Elevator Lobbies, C402.5.5 Air Intakes, Exhaust Openings, Stairways and Shafts, C403.1.1 Calculation of Heating and Cooling Loads, C403.2.1 Zone Isolation Required (Mandatory), C403.3 Heating and Cooling Equipment Efficiencies (Mandatory), C403.3.2 HVAC Equipment Performance Requirements (Mandatory), C403.3.2.1 Water-Cooled Centrifugal Chilling Packages (Mandatory), C403.3.2.2 Positive Displacement (Air- And Water-Cooled) Chilling Packages (Mandatory), C403.4 Heating and Cooling System Controls (Mandatory), C403.4.1 Thermostatic Controls (Mandatory), C403.4.1.1 Heat Pump Supplementary Heat (Mandatory), C403.4.1.3 Setpoint Overlap Restriction (Mandatory), C403.4.1.4 Heated or Cooled Vestibules (Mandatory), C403.4.1.5 Hot Water Boiler Outdoor Temperature Setback Control (Mandatory), C403.4.2.1 Thermostatic Setback (Mandatory), C403.4.2.2 Automatic Setback and Shutdown (Mandatory), C403.4.3.3 Hydronic (Water Loop) Heat Pump Systems, C403.5.2 Economizer Heating System Impact, C403.5.5 Economizer Fault Detection and Diagnostics (Mandatory), C403.6 Requirements for Mechanical Systems Serving Multiple Zones, C403.6.1 Variable Air Volume and Multiple-Zone Systems, C403.6.2 Single-Duct VAV Systems, Terminal Devices, C403.6.3 Dual-Duct and Mixing VAV Systems, Terminal Devices, C403.6.4 Single-Fan Dual-Duct and Mixing VAV Systems, Economizers, C403.6.5 Supply-Air Temperature Reset Controls, C403.6.6 Multiple-Zone VAV System Ventilation Optimization Control, C403.6.7 Parallel-Flow Fan-Powered VAV Air Terminal Control, C403.6.8 Setpoints for Direct Digital Control, C403.7 Ventilation and Exhaust Systems (Mandatory), C403.7.1 Demand Control Ventilation (Mandatory), C403.7.2 Enclosed Parking Garage Ventilation Controls (Mandatory), C403.7.3 Ventilation Air Heating Control (Mandatory), C403.7.4 Energy Recovery Ventilation Systems (Mandatory), C403.7.5 Kitchen Exhaust Systems (Mandatory), C403.7.6 Automatic Control of HVAC Systems Serving Guestrooms (Mandatory), C403.8.1 Allowable Fan Horsepower (Mandatory), C403.8.2 Motor Nameplate Horsepower (Mandatory), C403.8.4 Fractional HP Fan Motors (Mandatory), C403.9.2 Multiple-Cell Heat Rejection Equipment, C403.9.3 Limitation on Centrifugal Fan Open-Circuit Cooling Towers, C403.9.5 Heat Recovery for Service Water Heating, C403.10 Refrigeration Equipment Performance, C403.10.1 Walk-In Coolers, Walk-In Freezers, Refrigerated Warehouse Coolers and Refrigerated Warehouse Freezers (Mandatory), C403.10.2 Walk-In Coolers and Walk-In Freezers (Mandatory), C403.10.2.1 Performance Standards (Mandatory), C403.10.3 Refrigerated Display Cases (Mandatory), C403.10.4.1 Condensers Serving Refrigeration Systems, C403.11 Construction of HVAC System Elements (Mandatory), C403.11.1 Duct and Plenum Insulation and Sealing (Mandatory), C403.11.2.1 Low-Pressure Duct Systems (Mandatory), C403.11.2.2 Medium-Pressure Duct Systems (Mandatory), C403.11.2.3 High-Pressure Duct Systems (Mandatory), C403.11.3.1 Protection of Piping Insulation (Mandatory), C403.12 Mechanical Systems Located Outside of the Building Thermal Envelope (Mandatory), C403.12.2 Snow- And Ice-Melt System Controls, C403.12.3 Freeze Protection System Controls, C404.2 Service Water-Heating Equipment Performance Efficiency, C404.2.1 High Input Service Water-Heating Systems, C404.3 Heat Traps for Hot Water Storage Tanks, C404.5.1 Maximum Allowable Pipe Length Method, C404.5.2 Maximum Allowable Pipe Volume Method, C404.6 Heated-Water Circulating and Temperature Maintenance Systems, C404.9 Energy Consumption of Pools and Permanent Spas (Mandatory), C404.10 Energy Consumption of Portable Spas (Mandatory), C405 Electrical Power and Lighting Systems, C405.2.1.1 Occupant Sensor Control Function, C405.2.1.2 Occupant Sensor Control Function in Warehouses, C405.2.1.3 Occupant Sensor Control Function in Open Plan Office Areas, C405.2.3.1 Daylight-Responsive Control Function, C405.2.6.4 Exterior Time-Switch Control Function, C405.3 Interior Lighting Power Requirements (Prescriptive), C405.3.1 Total Connected Interior Lighting Power, C405.3.2 Interior Lighting Power Allowance, C405.3.2.2.1 Additional Interior Lighting Power, C405.4 Exterior Lighting Power Requirements (Mandatory), C405.4.1 Total Connected Exterior Building Exterior Lighting Power, C405.4.2 Exterior Lighting Power Allowance, C405.4.2.1 Additional Exterior Lighting Power, C405.5 Dwelling Electrical Meter (Mandatory), C405.6 Electrical Transformers (Mandatory), C405.8 Vertical and Horizontal Transportation Systems and Equipment, C405.9 Voltage Drop in Feeders and Branch Circuits, C406 Additional Efficiency Package Options, C406.2 More Efficient HVAC Equipment Performance, C406.4 Enhanced Digital Lighting Controls, C406.7 Reduced Energy Use in Service Water Heating, C408 Maintenance Information and System Commissioning, C408.1.1 Building Operations and Maintenance Information, C408.2 Mechanical Systems and Service Water-Heating Systems Commissioning and Completion Requirements, C408.2.4 Preliminary Commissioning Report, C408.3 Functional Testing of Lighting Controls, Chapter 4 [RE] Residential Energy Efficiency, Appendix RA Solar-Ready Provisions—Detached One- And Two-Family Dwellings and Townhouses, Section C402 Building Envelope Requirements, Section C404 Service Water Heating (Mandatory), Section C405 Electrical Power and Lighting Systems, Section C406 Additional Efficiency Package Options, Section C408 Maintenance Information and System Commissioning, Power-operated sliding doors and power-operated folding doors, Condensing units, water or evaporatively cooled, Air-cooled chillers without condenser shall be rated with, ≥ 1,000,000 and less than or equal to 5,000,000, > 5,000,000 and less than or equal to 10,000,000, Return air or exhaust systems required by code or accreditation, 0.5 inch w.c. (2.15 inches w.c. for laboratory and vivarium systems), Return and exhaust airflow control devices, Exhaust filters, scrubbers or other exhaust treatment, The pressure drop of device calculated at fan system design condition, Particulate filtration credit: MERV 9 thru 12, Particulate filtration credit: MERV 13 thru 15, Particulate filtration credit: MERV 16 and greater and, Pressure drop calculated at 2x clean filter pressure drop at. o Energy Rating Index path. Exception: Dynamic glazing is not required to comply with this section where both the lower and higher labeled SHGC already comply with the requirements of Table C402.4. The required heat recovery system shall have the capacity to provide the smaller of the following: Refrigerated warehouse coolers and refrigerated warehouse freezers shall comply with this section. The IECC has been adopted by many states and municipalities. Timed overrides for display cases shall turn the lights on for up to 1 hour and shall automatically time out to turn the lights off. Industrial production, material handling, transportation sites and associated storage areas. Buildings that comply with the following shall be exempt from the building thermal envelope provisions of this code: Building thermal envelope opaque assemblies shall comply with the requirements of Sections C402.2 and C402.4 based on the climate zone specified in Chapter 3. The continuous air barrier shall be constructed to comply with the following: Materials with an air permeability not greater than 0.004 cfm/ft2 (0.02 L/s • m2) under a pressure differential of 0.3 inch water gauge (75 Pa) when tested in accordance with ASTM E2178 shall comply with this section. The requirements of ANSI/ASHRAE/IESNA 90.1. For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) - 32]/1.8, wb = wet bulb, db = dry bulb. Where required, daylight-responsive controls shall be provided within each space for control of lights in that space and shall comply with all of the following: The sidelit zone is the floor area adjacent to vertical fenestration that complies with all of the following: The toplit zone is the floor area underneath a roof fenestration assembly that complies with all of the following: DAYLIGHT ZONE UNDER A SLOPED ROOFTOP MONITOR. INDIVIDUAL LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS. Clean filter pressure drop at fan system design condition. Switching the middle lamp luminaires independently of the outer lamps. FL = Full-load kW/ton value as specified in Table C403.3.2(7). Direct buried piping that conveys fluids at or below 60°F (15°C). A narrative description of the activities that will be accomplished during each phase of. Low-temperature display cases shall incorporate temperature-based defrost termination control with a time-limit default. Sound attenuation section (fans serving spaces with design, Laboratory and vivarium exhaust systems in high-rise buildings. Airflow shall be deemed minimized where the enclosed airspace is located on the interior side of the continuous air barrier and is bounded on all sides by building components. Lighting controlled from within dwelling units, where the lighting complies with. Copies of all documentation shall be given to the owner or owner's authorized agent and made available to the code official upon request in accordance with Sections C408.2.4 and C408.2.5. Required routine maintenance actions, cleaning and recommended relamping shall be clearly identified. 2018-IECC . Code officials shall be permitted to require time-of-use pricing in energy cost calculations. Stairway and shaft vent dampers shall be installed with automatic controls configured to open upon the activation of any fire alarm initiating device of the building's fire alarm system or the interruption of power to the damper. Compressors that incorporate internal or external crankcase heaters shall provide a means to cycle the heaters off during compressor operation. Exceptions: The following systems are exempt: A commissioning plan shall be developed by a registered design professional or approved agency and shall include the following items: Each supply air outlet and zone terminal device shall be equipped with means for air balancing in accordance with the requirements of Chapter 6 of the International Mechanical Code. Provided more detailed lighting control requirements 2/8/2017 Unpacking the 2018 IECC: Inside the Next Energy Code 7 2018 IECC COMMERCIAL KEY RESULTS SUMMARY. Any higher rate that can be demonstrated to reduce overall system annual energy use by offsetting reheat/recool energy losses through a reduction in outdoor air intake for the system as approved by the code official. This proposal removes a redundant definition. Leverage the most sophisticated code compliance platform. An escalator designed either for one-way down operation only or for reversible operation shall have a variable frequency regenerative drive that supplies electrical energy to the building electrical system when the escalator is loaded with passengers whose combined weight exceeds 750 pounds (340 kg). Piping from a water heater to the termination of the heated water fixture supply pipe shall be insulated in accordance with Table C403.11.3. Where the supply airflow rate of a fan system exceeds the values specified in Tables C403.7.4(1) and C403.7.4(2), the system shall include an energy recovery system. Systems primarily serving computer rooms with dry cooler water economizers that satisfy 100 percent of the expected system cooling load at 35°F (1.7°C) dry bulb. The energy consumption of electric-powered portable spas shall be controlled by the requirements of APSP 14. Exception: Closers are not required for doors more than 45 inches (1143 mm) in width or more than 7 feet (2134 mm) in height. CA Table = (Maximum allowable C-factor specified in Table C402.1.4) x Area. Index . Building thermal envelope opaque assemblies intended to comply on an assembly U-, C- or F-factor basis shall have a U-, C- or F-factor not greater than that specified in Table C402.1.4. Where using the Space-by-Space Method, an increase in the interior lighting power allowance is permitted for specific lighting functions. 40 percent of above-grade wall area; where the proposed vertical fenestration area is 40 percent or more of the above-grade wall area. Areas where it is documented that existing structures or natural objects block direct beam sunlight on not less than half of the roof over the enclosed area for more than 1,500 daytime hours per year between 8 a.m. and 4 p.m. BUILDING ENERGY CODES www.energycodes.gov 2 – Energy codes and standards set minimum efficiency requirements for new and renovated buildings, assuring reductions in energy use and emissions over the life of the building. Hospital, vivarium and laboratory systems that utilize flow control devices on exhaust or return to maintain space pressure relationships necessary for occupant health and safety or environmental control shall be permitted to use variable volume fan power limitation. Outdoor air intake and exhaust openings and stairway and shaft vents shall be provided with Class I motorized dampers. Hydronic heat pump systems shall comply with Sections. Light well depth = Measure vertically from the underside of the lowest point of the skylight glazing to the ceiling plane under the skylight. Areas predominantly consisting of residential zoning, All other areas not classified as lighting zone 1, 2 or 4, High-activity commercial districts in major metropolitan, 135 W per location plus 45 W per additional ATM per location, The space use classification shall be chosen in, Type: Mass wall where proposed wall is mass; otherwise steel-framed, The interior lighting power shall be determined in accordance with, The lighting power shall be determined in accordance with, Receptacle, motor and process loads shall be, Operating schedules shall include hourly profiles, Where no service water hot water system exists or is specified in the, Variable air volume with parallel fan-powered boxes, Packaged variable air volume with parallel fan-, 2 minimum, with chillers added so that all are sized equally and none is larger than 800 tons. Have program backup capabilities, which prevent the loss of program and time settings for not fewer than 10 hours, if power is interrupted. The wattage limit of the transformer supplying The visible transmittance of the fenestration is not less than 0.20. The lighting zone for the building exterior is determined in accordance with Table C405.4.2(1) unless otherwise specified by the code official. Ch. For purposes of this table, open circuit cooling tower performance is defined as the water flow rating of the tower at the thermal rating condition, divided by the fan nameplate-rated motor power. Condenser fan motors that are less than 1 hp (0.75 kW) shall use electronically commutated motors, permanent split-capacitor-type motors or 3-phase motors. Evaporator fan motors that are less than 1 hp (0.746 kW) and less than 460 volts shall be electronically commutated motors or 3-phase motors. The energy recovery system shall be configured to provide a change in the enthalpy of the outdoor air supply of not less than 50 percent of the difference between the outdoor air and return air enthalpies, at design conditions. Where pumps have automatic direct digital control configured to operate pumps only when zone heating or cooling is required, a variable speed drive shall be provided for pumps with motors having the same or greater nominal output power indicated in. Supply-water temperature reset is not required for chilled-water systems supplied by off-site district chilled water or chilled water from ice storage systems. In Climate Zones 1 through 6, not more than 40 percent of the gross above-grade wall area shall be vertical fenestration, provided that all of the following requirements are met: Visible transmittance (VT) of vertical fenestration is not less than 1.1 times solar heat gain coefficient (SHGC). Generate a code sheet that integrates with your drawing set. The FLadj and PLVadj values are only applicable for centrifugal chillers meeting all of the following full-load design ranges: Cooling systems shall not use hot gas bypass or other evaporator pressure control systems unless the system is designed with multiple steps of unloading or continuous capacity modulation. Single-zone variable air volume systems shall comply with the constant volume fan power limitation. Construction documents shall include the location and catalogue number of each piece of equipment. TDA = Total display area of the case, as measured in accordance with Appendix D of AHRI 1200. A listing of the specific equipment, appliances or systems to be tested and a description of the tests to be performed. Evaporator fan motors that are less than 1 hp (0.746 kW) and less than 460 volts shall use electronically commutated motors, brushless direct-current motors, or 3-phase motors. Exception: A variable voltage drive system that reduces operating voltage in response to light loading conditions is an alternative to the reduced speed function. Areas designated as security or emergency areas that are required to be continuously lighted. 3.1. 3.2. Energy recovery device, other than coil runaround loop. Where the thermal properties of airspaces are used to comply with this code in accordance with Section C401.2, such airspaces shall be enclosed in an unventilated cavity constructed to minimize airflow into and out of the enclosed airspace. Controls for such systems shall be able to automatically adjust the energy input to the heat tracing to maintain the desired water temperature in the piping in accordance with the times when heated water is used in the occupancy. Exception: Locking-type longitudinal joints and seams, other than the snap-lock and button-lock types, need not be sealed as specified in this section. Lighting intended for continuous operation. Motors in space-conditioning equipment that comply with. Low or minimum speed shall be used during periods of low cooling load and ventilation-only operation. Task lighting for medical and dental purposes that is in addition to general lighting and controlled by an independent control device. Systems primarily serving computer rooms in which 100 percent of the expected system cooling load at 40°F (4°C) dry bulb/35°F (1.7°C) wet bulb is met with evaporative water economizers. The total supply capacity of all fan cooling units not provided with economizers shall not exceed 20 percent of the total supply capacity of all fan cooling units in the building or 1,500,000 Btu/h (440 kW), whichever is greater. Centrifugal fan open-circuit cooling towers with a combined rated capacity of 1,100 gpm (4164 L/m) or greater at 95°F (35°C) condenser water return, 85°F (29°C) condenser water supply, and 75°F (24°C) outdoor air wet-bulb temperature shall meet the energy efficiency requirement for axial fan open-circuit cooling towers listed in Table C403.3.2(8). Systems serving supermarket areas with open refrigerated casework. Valves, pumps, strainers and threaded unions in piping that is 1 inch (25 mm) or less in nominal diameter. B = Sum of the (FL Dif) values for each distinct slab-on-grade perimeter condition of the building thermal envelope. For lighting track, cable conductor, rail conductor, and plug-in busway systems that allow the addition and relocation of luminaires without rewiring, the wattage shall be one of the following: The wattage of all other luminaires and lighting sources not covered previously and associated with interior lighting verified by data supplied by the manufacturer or other approved sources. Vertical and horizontal transportation systems and equipment shall comply with this section. Skylight Curbs Minimum of R-5 or NFRC 100 The doors into the enclosed room or space shall be shall be fully gasketed. devices protecting the system. Documentation shall be furnished by the designer demonstrating that representative sections totaling not less than 25 percent of the duct area have been tested and that all tested sections comply with the requirements of this section. Walls shall be provided with insulation having a thermal resistance of not less than R-25, ceilings shall be provided with insulation having a thermal resistance of not less than R-25 and doors of walk-in coolers and walk-in freezers shall be provided with insulation having a thermal resistance of not less than R-32. Site-assembled or site-constructed refrigerated display cases shall comply with the following: Lighting and glass doors in refrigerated display cases shall be controlled by one of the following: Refrigerated display cases, walk-in coolers or walk-in freezers that are served by remote compressors and remote condensers not located in a condensing unit, shall comply with Sections C403.10.4.1 and C403.10.4.2. If you are in cfm’s northern territory, you might be in 5A or 6B. Ch. Functional performance test procedures used during the commissioning process including measurable criteria for test acceptance, provided herein for repeatability. The air barriers shall be permitted to be located on the inside or outside of the building envelope, located within the assemblies composing the envelope, or any combination thereof. MINIMUM EFFICIENCY AIR CONDITIONERS AND CONDENSING UNITS SERVING COMPUTER ROOMS. Exception: Thermostat settings and schedules for HVAC systems that utilize radiant heating, radiant cooling and elevated air speed, provided that equivalent levels of occupant thermal comfort are demonstrated by means of equal Standard Effective Temperature as calculated in Normative Appendix B of ASHRAE Standard 55. The product of the visible transmittance of the roof fenestration assembly and the area of the rough opening of the roof fenestration assembly divided by the area of the. Systems installed to provide heat outside a building shall be radiant systems. Steel floor joist systems shall be insulated to R-38. The total connected interior lighting power shall be determined in accordance with Equation 4-10. 4 Residential Energy Efficiency . Conditions under which the test will be performed. The controls shall be configured to automatically adjust the daily start time of the HVAC system in order to bring each space to the desired occupied temperature immediately prior to scheduled occupancy. UA Table = (U-factor from Table C402.1.3, C402.1.4 or C402.4 x Area. Manual or automatic controls shall be provided that will operate the air curtain with the opening and closing of the door.
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