Conditions under which the test will be performed. 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. A horsepower below the midpoint between the two consecutive horsepowers shall be rounded down to the lower of the two horsepowers. Each fan system powered by an individual motor or array of motors with connected power, including the motor service factor, totaling 5 hp (3.7 kW) or more shall have controls and devices configured to automatically modulate the fan speed to control the leaving fluid temperature or condensing temperature and pressure of the heat rejection device. An alternate compliance path is described in WSEC Figure 14A and Chapter 4 – Systems Analysis. Doors that have an air curtain with a velocity of not less than 6.56 feet per second (2 m/s) at the floor that have been tested in accordance with ANSI/AMCA 220 and installed in accordance with the manufacturer's instructions. Controls shall not be capable of creating a false load in the mechanical cooling systems by limiting or disabling the economizer or any other means, such as hot gas bypass, except at the lowest stage of mechanical cooling. The controls shall be capable of and configured to automatically raise the cooling setpoint to not lower than 80°F (27°C) and lower the heating setpoint to not higher than 60°F (16°C) when the guestroom is unrented or has not been continuously occupied for more than 16 hours or a, Fans in HVAC systems shall comply with Sections, standards to be fully ducted, or systems required to maintain, Controls shall be provided for fans in accordance with. Piping that is heat traced shall be insulated in accordance with Table C403.11.3 or the heat trace manufacturer's instructions. "SEW" indicates orientations other than "N." For buildings in the southern hemisphere, reverse south and north. Class III facilities consist of club, amateur league and high-school facilities with seating for 2,000 or fewer spectators. Where an air duct supplying combustion air to the enclosed room or space passes through conditioned space, the duct shall be insulated to an, Doors and door openings required to comply with UL 1784 by the. 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). 3.2. Commercial buildings shall comply with one of the following: Where some or all of an existing fenestration unit is replaced with a new fenestration product, including sash and glazing, the replacement fenestration unit shall meet the applicable requirements for U-factor and SHGC in Table C402.4. 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. 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 maximum rate for windows, sliding and swinging doors, and skylights is permitted to be 0.3 cfm per square foot of fenestration or door area when tested in accordance with AAMA/WDMA/CSA101/I.S.2/A440 at 6.24 psf (300 Pa). Air Barrier Material(s) assembled and joined together to provide a barrier to air leakage through and into the building envelope. Where no cooling system exists or no cooling system has been specified, the cooling system shall be modeled as an air-cooled single-zone system, one unit per thermal zone. Schedules shall model the. 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. In addition, a manual control shall be provided to control such lighting separately from the general lighting in the space: Sleeping units shall have control devices or systems that are configured to automatically switch off all permanently installed luminaires and switched receptacles within 20 minutes after all occupants have left the unit. 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. Using Sections C402 through C405, which include prescriptive requirements using one of the following for building envelope: R-value-based method; Assembly U-factor, C-factor, or F-factor-based method; Component performance alternative ; Complying with air leakage, some mechanical, and all of the requirements … 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. Equipment not designed for operation at AHRI Standard 550/590 test conditions of 44°F (7°C) leaving chilled-water temperature and 2.4 gpm/ton evaporator fluid flow and 85°F (29°C) entering condenser water temperature with 3 gpm/ton (0.054 I/s • kW) condenser water flow shall have maximum full-load kW/ton (FL) and part-load ratings requirements adjusted using Equations 4-6 and 4-7. The report shall be identified as "Preliminary Commissioning Report," shall include the completed Commissioning Compliance Checklist, Figure C408.2.4, and shall identify: A report of test procedures and results identified as "Final Commissioning Report" shall be delivered to the building owner or owner's authorized agent. Where the space use, classification for a building is not known, the building, requirement (NR) SHGC = 0.40 shall be used. Units that include an air-side economizer in accordance with, Modulating fan control is not required for chilled water and evaporative cooling units with fan motors of less than 1 hp (0.746 kW) where the units are not used to provide, Where the volume of outdoor air required to comply with the ventilation requirements of the. SPECIFICATIONS FOR THE STANDARD REFERENCE DESIGN HVAC SYSTEM DESCRIPTIONS. 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. Combination units not covered by the National Appliance Energy Conservation Act of 1987 (NAECA) (3-phase power or cooling capacity greater than or equal to 65,000 Btu/h [19 kW]) shall comply with either rating. Fans serving multiple refrigerant or fluid cooling circuits. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure. w.c. CFMD = The design airflow through each applicable device from Table C403.8.1(2) in cubic feet per minute. The maximum U-factor and solar heat gain coefficient (SHGC) for fenestration shall be as specified in Table C402.4. Low or minimum speed shall be used during periods of low cooling load and ventilation-only operation. "Cap" = The rated cooling capacity of the project in Btu/h. 1 or No. Low-voltage dry-type distribution electric transformers shall meet the minimum efficiency requirements of Table C405.6 as tested and rated in accordance with the test procedure listed in DOE 10 CFR 431. Portions of roofs that are ballasted with a minimum stone ballast of 17 pounds per square foot [74 kg/m. Weigh not less than 35 pounds per square foot (171 kg/m, Weigh not less than 25 pounds per square foot (122 kg/m, Insulation applied to the underside of concrete floor slabs shall be permitted an airspace of not more than 1 inch (25 mm) where it turns up and is in contact with the underside of the floor under walls associated with the. Open-circuit cooling towers used on water-cooled chiller systems that are configured with multiple- or variable-speed condenser water pumps shall be designed so that all open- circuit cooling tower cells can be run in parallel with the larger of the flow that is produced by the smallest pump at its minimum expected flow rate or at 50 percent of the design flow for the cell. Condenser fan motors that are less than 1 hp (0.746 kW) in capacity shall be of the electronically commutated or permanent split capacitor-type or shall be 3-phase motors. TDA = Total display area of the case, as measured in accordance with Appendix D of AHRI 1200. For mechanical cooling stage control that does not use variable compressor displacement, the percent displacement shall be equivalent to the mechanical cooling capacity reduction evaluated at the full load rating conditions for the compressor. The installation of one or more revolving doors in the building entrance shall not eliminate the requirement that a vestibule be provided on any doors adjacent to revolving doors. For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) - 32]/1.8. Where throttling results in not greater than 5 percent of the nameplate horsepower draw above that required if the impeller were trimmed. Paths for air leakage from the Equipment class designations consist of a combination [in sequential order separated by periods (AAA).(BB). Where different windows or glass doors have different PF values, they shall each be evaluated separately. Where public health standards require 24-hour pump operation. Corridors, lobbies, electrical rooms and or mechanical rooms. 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. 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). 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. Multiple-zone VAV systems with direct digital control of individual zone boxes reporting to a central control panel shall have automatic controls configured to reduce outdoor air intake flow below design rates in response to changes in system ventilation efficiency (Ev) as defined by the International Mechanical Code. The use of belt-driven fans to sheave adjustments for airflow balancing instead of a varying motor speed shall be permitted. Name and address of not less than one service agency for installed equipment. Exception: A variable voltage drive system that reduces operating voltage in response to light loading conditions is an alternative to the reduced speed function. Never miss important differences made to the code. Single-duct VAV systems shall use terminal devices capable of and configured to reduce the supply of primary supply air before reheating or recooling takes place. The total efficiency of the fan at the design point of operation shall be within 15 percentage points of the maximum total efficiency of the fan. Where the proposed skylight area is less than or equal to the skylight area allowed by Section C402.4.1, the value of E (Excess Skylight Value) shall be zero. Piping from user-controlled shower and bath mixing valves to the water outlets. 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. MINIMUM EFFICIENCY AIR CONDITIONERS AND CONDENSING UNITS SERVING COMPUTER ROOMS. Input and output reports from the energy analysis simulation program containing the complete input and output files, as applicable. 3. 5.3. Fenestration shall comply with Sections C402.4.1 through C402.4.5 and Table C402.4. They shall have a clock capable of being programmed for not fewer than 7 days. 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. 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. For purposes of determining the required minimum nominal full-load efficiency of an electric motor that has a horsepower or kilowatt rating between two horsepower or two kilowatt ratings listed in this table, each such motor shall be deemed to have a listed horsepower or kilowatt rating, determined as follows: MINIMUM NOMINAL FULL-LOAD EFFICIENCY FOR NEMA DESIGN C AND IEC DESIGN H MOTORS AT 60 HZa, b, MINIMUM AVERAGE FULL-LOAD EFFICIENCY POLYPHASE SMALL ELECTRIC MOTORSa, MINIMUM AVERAGE FULL-LOAD EFFICIENCY FOR CAPACITOR-START CAPACITOR-RUN AND CAPACITOR-START INDUCTION-RUN SMALL ELECTRIC MOTORSa. Code Calculators automatically generates a detailed list of requirements. A reliable and up-to-date source of codes. C403.7.4 Energy Recovery Ventilation Systems. Neither the area of the dwelling units nor the wattage of lighting in the dwelling units is counted. The airflow rate in the deadband between heating and cooling does not exceed 20 percent of the zone design peak supply rate or higher allowed rates under Items 3, 4 and 5 of this section. In warehouses, the lighting in aisleways and open areas shall be controlled with occupant sensors that automatically reduce lighting power by not less than 50 percent when the areas are unoccupied. Economizer systems shall be integrated with the mechanical cooling system and be configured to provide partial cooling even where additional mechanical cooling is required to provide the remainder of the cooling load. Where the fenestration is located in a rooftop monitor, the toplit zone shall extend laterally to the nearest obstruction that is taller than 0.7 times the ceiling height, or up to 1.0 times the height from the floor to the bottom of the fenestration, whichever is less, and longitudinally from the edge of the fenestration to the nearest obstruction that is taller than 0.7 times the ceiling height, or up to 0.25 times the height from the floor to the bottom of the fenestration, whichever is less, as indicated in Figures C405.2.3.3(2) and C405.2.3.3(3). Lighting approved because of safety considerations. Highlight differences between any two building codes. 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. The first value is for perimeter insulation and the second value is for full slab insulation. For purposes of this table, air-cooled condenser performance is defined as the heat rejected from the refrigerant divided by the fan nameplate-rated motor 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. The dampers shall be labeled by an approved agency. IECC 2018 Daylight Zone Requirements IECC 2018 Daylight Zone Requirements: Sidelighted daylight zones must be controlled separately from toplighted zones. 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. Lighting controls as specified in Sections. Heaters and pump motors that have built-in time switches shall be in compliance with this section. 3 Vapor Retarder and Air Barrier [R402.4] Code Summary . Low-sloped roofs directly above cooled conditioned spaces in Climate Zones 1, 2 and 3 shall comply with one or more of the options in Table C402.3. Functional testing of lighting controls shall comply with, Not less than 1.71 Btu/h per square foot (5.4 W/m. 6 Referenced Standards. First, select an energy compliance path from Line 3 and complete the Project Information, Project Team Information, and Scope of Work sections from Line 22 to 26. Insulation installed on a suspended ceiling having removable ceiling tiles shall not be considered as part of the minimum thermal resistance of the roof insulation. Exception: Energy used to recharge or refuel vehicles that are used for on-road and off-site transportation purposes. Skylight area = Total fenestration area of skylights. Fan motor power input shall be not more than 30 percent of design wattage at 50 percent of the design airflow. 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. Heat trace shall be arranged to be turned off automatically when there is not a demand for hot water. 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. Group I-2: Hospitals, psychiatric hospitals and nursing homes. Tank inlets and outlets associated with solar water heating system circulation loops shall not be required to have heat traps. 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. Interior lighting in the building shall have the following enhanced lighting controls that shall be located, scheduled and operated in accordance with Sections C405.2.1 through C405.2.3. Systems that prevent reheating, recooling, mixing or simultaneous supply of air that has been previously cooled, either mechanically or through the use of economizer systems, and air that has been previously mechanically heated. Not less than 3 percent of the energy used within the building for building mechanical and service water heating equipment and lighting regulated in Chapter 4. o Energy Rating Index path. 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. 5 Existing Buildings . Where 30 percent or more of the tested controls fail, all remaining identical combinations shall be tested. B = Sum of the (FL Dif) values for each distinct slab-on-grade perimeter condition of the building thermal envelope. Tested areas shall total not less than 25 percent of the conditioned floor area and shall be tested in accordance with this section. Listed energy recovery devices with a sensible heat recovery effectiveness of not less than 40 percent on not less than 50 percent of the total exhaust airflow. The requirements of ANSI/ASHRAE/IESNA 90.1. Garages that have a garage area to ventilation system motor nameplate power ratio that exceeds 1125 cfm/hp (710 L/s/kW) and do not utilize heating or mechanical cooling. Where the design exhaust capacity is not greater than 300 cfm (142 L/s). Exception: Closers are not required for doors more than 45 inches (1143 mm) in width or more than 7 feet (2134 mm) in height. Lighting for nonvisual applications, such as plant growth and food warming, shall be controlled by a time switch control complying with. Skylight Curbs Minimum of R-5 or NFRC 100 For SI: 1 watt per square foot = W/0.0929 m2. Structure of the 2018 IECC. Multiple fans in series or parallel that have a combined motor nameplate horsepower of 5 hp (3.7 kW) or less and are operated as the functional equivalent of a single fan. Single-zone variable air volume systems shall comply with the constant volume fan power limitation. 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. 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. 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. The 2018 IECC voting period ended in November of 2017. V = Volume of the case, as measured in accordance with Appendix C of AHRI 1200. The controls shall start the pump upon receiving a signal from the action of a user of a fixture or appliance, sensing the presence of a user of a fixture or sensing the flow of hot or tempered water to a fixture fitting or appliance. 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. (747 Pa) shall be insulated and sealed in accordance with. k = the upper value of the conductivity range listed in the table for the applicable fluid temperature. 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. Aged solar reflectance tested in accordance with ASTM C1549, ASTM E903 or ASTM E1918 or CRRC-S100. Where multiples of each unique combination of sensor type and space geometry are provided, not less than 10 percent and in no case fewer than one, of each combination shall be tested unless the code official or design professional requires a higher percentage to be tested. "Mass walls" where used as a component in the thermal envelope of a building shall comply with one of the following: The thermal properties (component R-values or assembly U-, C- or F-factors) of floor assemblies over outdoor air or unconditioned space shall be as specified in Table C402.1.3 or C402.1.4 based on the construction materials used in the floor assembly. The conversion should be calculated to three significant decimal places, and the resulting horsepower shall be rounded in accordance with No. 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. Air-cooled unitary direct-expansion units listed in Tables C403.3.2(1) through C403.3.2(3) and variable refrigerant flow (VRF) units that are equipped with an economizer in accordance with Sections C403.5 through C403.5.4 shall include a fault detection and diagnostics system complying with the following: The following temperature sensors shall be permanently installed to monitor system operation: The unit controller shall be configured to provide system status by indicating the following: The fault detection and diagnostics system shall be configured to detect the following faults: Supply air systems serving multiple zones shall be variable air volume (VAV) systems that have zone controls configured to reduce the volume of air that is reheated, recooled or mixed in each zone to one of the following: Systems with DDC where all of the following apply: Exception: The following individual zones or entire air distribution systems are exempted from the requirement for VAV control: Multiple-zone HVAC systems shall include controls that automatically reset the supply-air temperature in response to representative building loads, or to outdoor air temperature. Control functions that switch control zone lights completely off when the zone is vacant meet this requirement. Floor framing cavity insulation or structural slab insulation shall be installed to maintain permanent contact with the underside of the subfloor decking or structural slabs. Where heated slabs are below grade, below-grade walls shall comply with the. Exception: Systems where the working fluid in the refrigeration cycle goes through both subcritical and super-critical states (transcritical) or that use ammonia refrigerant are exempt. Projects provide a dedicated space to collaborate on code research. HVAC systems shall be balanced in accordance with generally accepted engineering standards. Deletes definition “CONTINUOUS AIR BARRIER”. Commercial buildings or portions of commercial buildings enclosing Group R occupancies shall use the U-, C- or F-factor from the "Group R" column of Table C402.1.4. ", Where not less than 25 percent of the annual, The input rating of water heaters installed in individual dwelling units shall not be required to be included in the total input rating of, The input rating of water heaters with an input rating of not greater than 100,000 Btu/h (29.3 kW) shall not be required to be included in the total input rating of. For light-emitting diode luminaires with either integral or remote drivers, the rated wattage of the luminaire. The water volume in the piping shall be calculated in accordance with Section C404.5.2.1. Uninterruptible power system transformers. Installation Requirements New 2018 IECC: Continuous insulation needs to have minimum of 2 layers with joints staggered Interior roof insulation has to be against air barrier, can’t sit on dropped ceiling tiles. Exhaust airflow from a single isolation area of less than 10 percent of the design airflow of the exhaust system to which it connects. Systems with energy recovery complying with. Lighting and switched receptacles controlled by card key controls. 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. 56 2018 IECC Study Companion Topic: Application Category: Commercial Energy Efficiency Reference: IECC C401.2 Subject: General Code Text: Commercial buildings shall comply with one of the following: 1. Variable pump flow is not required on dedicated coil circulation pumps where needed for freeze protection. Lighting for theatrical purposes, including performance, stage, film production and video production. An increase in the interior lighting power allowance is permitted in the following cases: Additional interior lighting power allowance = 1000 W + (Retail Area 1 × 4.8 W/m, The total connected exterior lighting power calculated in accordance with, neighborhood business districts, light industrial with, areas as designated by the local land use planning, inspection stations at guarded facilities, Any increase in the exterior lighting power allowance is limited to the specific lighting applications indicated in. An air or water economizer shall be provided for: 1. UAS = Sum of the (UA Proposed) values for each skylight assembly. Where components, such as indoor or outdoor coils, from different manufacturers are used, calculations and supporting data shall be furnished by the designer that demonstrates that the combined efficiency of the specified components meets the requirements herein. The area controlled by the override switch shall not be limited to 5,000 square feet (465 m. 2.1. Exception: Tubular pipe insulation shall not be required on the following: The maximum allowable piping length from the nearest source of heated water to the termination of the fixture supply pipe shall be in accordance with the following. The lights are not incorrectly turned on by movement in adjacent areas or by HVAC operation. Generation of an alarm to the system operational location. Hydronic heat pump systems shall comply with Sections. Escalators and moving walks shall comply with ASME A17.1/CSA B44 and shall have automatic controls configured to reduce speed to the minimum permitted speed in accordance with ASME A17.1/CSA B44 or applicable local code when not conveying passengers. but not less than 8 W per linear foot (25 W/lin m). Reverse the terminal damper logic and provide heating from the central air handler by primary air. Allowance for an operator to readily remove one or more. Compressors that incorporate internal or external crankcase heaters shall provide a means to cycle the heaters off during compressor operation. The second stage of heating modulates the airflow rate from the deadband flow rate up to the heating maximum flow rate that is less than 50 percent of the zone design peak supply rate. 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. A = Sum of the (UA Dif) values for each distinct assembly type of the building thermal envelope, other than slabs on grade and below-grade walls. UDZFA = Uncontrolled daylight zone floor area is the sum of all sidelit and toplit zones, calculated in accordance with Sections C405.2.3.2 and C405.2.3.3, that do not have daylight responsive controls. The occupant sensors shall control lighting in each aisleway independently and shall not control lighting beyond the aisleway being controlled by the sensor. Television broadcast lighting for playing areas in sports arenas. Required regular maintenance actions for equipment and systems shall be clearly stated on a readily visible label. 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. 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. A design outdoor airflow greater than 3,000 cfm (1416 L/s). 1.2. Snow- and ice-melting systems shall include automatic controls configured to shut off the system when the pavement temperature is above 50°F (10°C) and precipitation is not falling, and an automatic or manual control that is configured to shut off when the outdoor temperature is above 40°F (4°C). Lighting that is not controlled in accordance with Section C405.2.6.2 shall be controlled so that the total wattage of such lighting is automatically reduced by not less than 30 percent by selectively switching off or dimming luminaires at one of the following times: Time-switch controls for exterior lighting shall comply with the following: The total interior lighting power allowance (watts) is determined according to Table C405.3.2(1) using the Building Area Method, or Table C405.3.2(2) using the Space-by-Space Method, for all areas of the building covered in this permit. 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. Table C403.7.4(1) and (2) CZ 4A and 5A. June 3, 2020 31 2. Don't miss relevant code. 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. For the luminaires in each elevator cab, not including signals and displays, the sum of the lumens divided by the sum of the watts shall be not less than 35 lumens per watt. Functions to be tested including, but not limited to, calibrations and economizer controls. 3.2. Water lines and ducts in the enclosed room or space shall be insulated in accordance with, 2.5. The air leakage of fenestration assemblies shall meet the provisions of Table C402.5.2. Rapidly and efficiently calculate project parameters. Ventilation fans in elevators that do not have their own air-conditioning system shall not consume more than 0.33 watts/cfm at the maximum rated speed of the fan. MINIMUM EFFICIENCY REQUIREMENTS: COMMERCIAL REFRIGERATION, MINIMUM EFFICIENCY REQUIREMENTS: COMMERCIAL REFRIGERATORS AND FREEZERS. 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. This section has been amended at the state or city level. The volume in the piping shall be determined from the "Volume" column in, Heated-water circulation systems shall be in accordance with. Otherwise: D = (DA x UV) - (DA x U Wall), but not less than zero. Do not copy, distribute, or disclose. Exception: An energy recovery ventilation system shall not be required in any of the following conditions: Laboratory fume hood systems that include not fewer than one of the following features: ENERGY RECOVERY REQUIREMENT (Ventilation systems operating less than 8,000 hours per year), ENERGY RECOVERY REQUIREMENT (Ventilation systems operating not less than 8,000 hours per year). Maximum capacity — minimum and maximum ratings as provided for and allowed by the unit's controls. Sealing shall allow for expansion, contraction and mechanical vibration. Where an air economizer is required, the energy recovery system shall include a bypass or controls that permit operation of the economizer as required by Section C403.5. (498 Pa) shall be securely fastened and sealed with welds, gaskets, mastics (adhesives), mas-tic-plus-embedded-fabric systems or tapes installed in accordance with the manufacturer's instructions. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Pipe insulation shall be continuous except where the piping passes through a framing member. Boiler systems including more than one boiler shall be capable of and configured to reduce flow automatically through the boiler system when a boiler is shut down. 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. FL Proposed = Proposed F-value x Perimeter length. These requirements apply to boilers with rated input of 8,000,000 Btu/h or less that are not packaged boilers and to all packaged boilers. Code calculators automatically generate a detailed list of requirements. Minimum efficiency requirements for boilers cover all capacities of packaged boilers. Hydronic systems that use a common return system for both hot water and chilled water are prohibited. Commercial. They shall incorporate a manual control to allow occupants to turn off lights. Concrete masonry walls coated with either one application of block filler or two applications of a paint or sealer coating. Exception: Where the slab-on-grade floor is greater than 24 inches (61 mm) below the finished exterior grade, perimeter insulation is not required. Vestibules shall be designed so that in passing through the vestibule it is not necessary for the interior and exterior doors to open at the same time. See differences between code years or jurisdictions. Assemblies of materials and components with an average air leakage not greater than 0.04 cfm/ft2 (0.2 L/s • m2) under a pressure differential of 0.3 inch of water gauge (w.g. Spaces with a total of more than 150 watts of gen, Spaces with a total of more than 150 watts of. Systems serving supermarket areas with open refrigerated casework. Pressure classifications specific to the duct system shall be clearly indicated on the construction documents in accordance with the International Mechanical Code. Each zone shall be provided with thermostatic setback controls that are controlled by either an automatic time clock or programmable control system. 3 General Requirements. Luminaires shall be addressed individually. For SI: 1 foot = 304.8 mm, 1 watt per square foot = W/0.0929 m2. Class I facilities consist of professional facilities; and semiprofessional, collegiate, or club facilities with seating for 5,000 or more spectators. Part-load performance curves for mechanical equipment. 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. Steel floor joist systems shall be insulated to R-38. Skylight curbs shall be insulated to the level of roofs with insulation entirely above the deck or R-5, whichever is less. View a consolidated view of relevant sections tailored to your project. Furniture-mounted supplemental task lighting that is controlled by automatic shutoff. Lighting reduction shall be achieved by one of the following or another approved method: Exception: Light reduction controls are not required in daylight zones with daylight responsive controls complying with Section C405.2.3. The system under "all other" shall be selected for all other cases. 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. For fans less than 6 bhp (4413 W), 1.5 times the fan brake horsepower. Chilled water plants including more than one chiller shall be capable of and configured to reduce flow automatically through the chiller plant when a chiller is shut down. Simple Systems refer to packaged unitary equipment. )(75 Pa) when tested in accordance with ASTM E2357, ASTM E1677 or ASTM E283 shall comply with this section. 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 300,000 Btu/h (88 kW), whichever is greater. The calculations shall be performed on a time step basis consistent with the simulation program used. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 liquid ounce = 0.030 L, 1 gallon = 128 ounces. Equipment shall meet the minimum efficiency requirements of Tables C403.3.2(1) through C403.3.2(9) when tested and rated in accordance with the applicable test procedure. Valves, pumps, strainers and threaded unions in piping that is 1 inch (25 mm) or less in nominal diameter. 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 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. Exception: Economizers on variable air volume (VAV) systems that cause zone level heating to increase because of a reduction in supply air temperature. The calibration adjustment equipment is located for. 2.3. Get everyone on the same page and streamline code research. In Part I, Part II, Part III, and Part IV of our Building for the Future blog posts we gave a general overview, building envelope, mechanical and electrical updates of the 2018 IECC.. Now let’s move on to Commissioning (Cx), one of the most valuable, as well as the most misunderstood, services in the AEC profession. Water heaters, circulating water systems and heat trace temperature maintenance systems shall be considered to be sources of heated water. DA = (Proposed Vertical Glazing Area) -(Vertical Glazing Area allowed by Section C402.4.1). Exception: Unit skylight curbs included as a component of a skylight listed and labeled in accordance with NFRC 100 shall not be required to be insulated. NBI demonstrated its leadership in codes by submitting proposals for the IECC that included a unified chapter for multifamily housing codes and a lighting measure to begin to tackle indoor agricultural energy usage before the industry expands further. Specific application controls shall be provided for the following: The following lighting shall be controlled by an occupant sensor complying with Section C405.2.1.1 or a time-switch control complying with Section C405.2.2.1. North, South, East, and West zones must also be controlled separately. 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. Code calculators may not be available. Electric heat trace systems shall comply with IEEE 515.1. The tubing from the connection at the termination of the fixture supply piping to a plumbing fixture or plumbing appliance. Exception: Air barriers are not required in buildings located in Climate Zone 2B. 4.1. Spaces where an automatic shutoff would endanger occupant safety or security. In the SL equation. Scope: New Construction Newly constructed commercial buildings shall follow either the 2018 IECC for new construction in Section C403 Building Mechanical Systems or Section 6 … 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. "Mass floors" shall be in accordance with. Climate data for a full calendar year (8,760 hours) and shall reflect. 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 walls, floors and ceilings that separate the enclosed room or space from conditioned spaces shall be sealed in accordance with. Direct expansion (DX) units that control 75,000 Btu/h (22 kW) or greater of rated capacity of the capacity of the mechanical cooling directly based on occupied space temperature shall have not fewer than two stages of mechanical cooling capacity. Precooling coils and water-to-water heat exchangers used as part of a water economizer system shall either have a water-side pressure drop of less than 15 feet (45 kPa) of water or a secondary loop shall be created so that the coil or heat exchanger pressure drop is not seen by the circulating pumps when the system is in the normal cooling (noneconomizer) mode. Factory-installed piping within room fan-coils and unit ventilators tested and rated according to AHRI 440 (except that the sampling and variation provisions of Section 6.5 shall not apply) and AHRI 840, respectively. Motors in the airstream within fan coils and terminal units that only provide heating to the space served. Time-switch controls to turn off lights during nonbusiness hours. The net sensible cooling capacity is the gross sensible capacity minus the energy dissipated into the cooled space by the fan system. Labeled as having an air leakage rate of not more 2.0 cfm (0.944 L/s) when tested in accordance with ASTM E283 at a 1.57 psf (75 Pa) pressure differential. In addition, ducts and plenums shall be leak tested in accordance with the SMACNA HVAC Air Duct Leakage Test Manual and shown to have a rate of air leakage (CL) less than or equal to 4.0 as determined in accordance with Equation 4-8. The skylight area shall be not greater than 3 percent of the gross roof area. 3.1. The system characteristics shall be identical in both the standard reference design and proposed design. Masonry walls constructed of clay or shale masonry units with a nominal width of 4 inches (102 mm) or more. Exception: Skylights above daylight zones of enclosed spaces are not required in: Skylights in office, storage, automotive service, manufacturing, nonrefrigerated warehouse, retail store and distribution/sorting area spaces shall have a glazing material or diffuser with a haze factor greater than 90 percent when tested in accordance with ASTM D1003. Instructions for Completing the 2018 IECC Code Analysis Checklist . Testing shall be in accordance with the applicable reference test standard in Table C402.5.2 by an accredited, independent testing laboratory and labeled by the manufacturer. For a public lavatory faucet: not more than 2 ounces (0.06 L). Exception: Previously occupied tenant spaces that comply with this code in accordance with Section C501. Submit this form or email us at, Please contact Additionally, the controls shall have a manual override that allows temporary operation of the system for up to 2 hours; a manually operated timer configured to operate the system for up to 2 hours; or an occupancy sensor. 7.3. 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). Per the 2018 IECC, Section C401.2: Using the requirements of ASHRAE 90.1-2016. The defrost cycle shall terminate first on an upper temperature limit breach and second upon a time limit breach. HIGH-LIMIT SHUTOFF CONTROL SETTING FOR AIR ECONOMIZERSb. Lighting integral to equipment or instrumentation and installed by the manufacturer. A narrative of how each system is intended to operate, including recommended setpoints. The report shall include the following: Exception: Deferred tests that cannot be performed at the time of report preparation due to climatic conditions. Tubular pipe insulation shall be installed in accordance with the insulation manufacturer's instructions. Class II facilities consist of collegiate and semiprofessional facilities with seating for fewer than 5,000 spectators; club facilities with seating for between 2,000 and 5,000 spectators; and amateur league and high-school facilities with seating for more than 2,000 spectators. Direct buried piping that conveys fluids at or below 60°F (15°C). The rate of air leakage shall be determined at 1.0 inch water gauge (249 Pa) when tested in accordance with AMCA 500D for such purpose. For the Building Area Method, the interior lighting power allowance is the floor area for each building area type listed in, For the Space-by-Space Method, the interior lighting power allowance is determined by multiplying the floor area of each space times the value for the space type in. Display lighting for exhibits in galleries, museums and monuments that is in addition to general lighting and controlled by an independent control device. with a moisture vapor-permeable material. The IB was updated to the 2018 IECC as well as expanded to include the requirements for commissioning, HVAC controls, and economizer requirements of the energy code in relation to existing commercial buildings. Sidelit zones on the first floor above grade in Group A-2 and Group M occupancies. The first stage of heating modulates the zone supply air temperature setpoint up to a maximum setpoint while the airflow is maintained at the deadband flow rate. Plate-type liquid-to-liquid heat exchangers shall meet the minimum requirements of Table C403.3.2(10). Hot water boilers that supply heat to the building through one- or two-pipe heating systems shall have an outdoor setback control that lowers the boiler water temperature based on the outdoor temperature. Electric motors shall meet the minimum efficiency requirements of Tables C405.7(1) through C405.7(4) when tested and rated in accordance with the DOE 10 CFR 431. Heated water supply piping shall be in accordance with, The volume shall be the sum of the internal volumes of pipe, fittings, valves, meters and manifolds between the nearest source of heated water and the termination of the fixture supply pipe. bhp = The maximum combined fan brake horsepower. NA means the requirements are not applicable for Path B and only Path A can be used for compliance. For SI: 1 British thermal unit per hour = 0.2931 W. MINIMUM EFFICIENCY REQUIREMENTS: ELECTRICALLY OPERATED UNITARY AND APPLIED HEAT PUMPS. Exceptions: Vestibules are not required for the following: Recessed luminaires installed in the building thermal envelope shall be all of the following: HVAC systems serving zones that are over 25,000 square feet (2323 m2) in floor area or that span more than one floor and are designed to operate or be occupied nonsimultaneously shall be divided into isolation areas. Exception: Jurisdictions that require site energy (1 kWh = 3413 Btu) rather than energy cost as the metric of comparison. 2018 IECC Residential Summary Minor improvement over the 2015 IECC o Windows: 0.6-1.1% improvement in the prescriptive path. Lighting for water features and swimming pools. Lighting equipment that is for sale or demonstration in lighting education. 5.1. Roofs where not less than 75 percent of the roof area complies with one or more of the exceptions to this section. Was manufactured on or after April 16, 2015. A grid-enabled water heater is an electric resistance water heater that meets all of the following: Bears a permanent label applied by the manufacturer that complies with all of the following: Gas-fired water-heating equipment installed in new buildings shall be in compliance with this section. Parallel-flow fan-powered VAV air terminals shall have automatic controls configured to: During heating for warmup or setback temperature control, either: For systems with direct digital control of individual zones reporting to the central control panel, the static pressure setpoint shall be reset based on the zone requiring the most pressure. Hydronic systems shall be proportionately balanced in a manner to first minimize throttling losses, then the pump impeller shall be trimmed or pump speed shall be adjusted to meet design flow conditions. Gravity and thermo-syphon circulation systems shall be prohibited. Individual fans with a motor nameplate horsepower of 5 hp (3.7 kW) or less, unless Exception 1.2 applies. Where a closed-circuit cooling tower is used directly in the heat pump loop, either an automatic valve shall be installed to bypass the flow of water around the closed-circuit cooling tower, except for any flow necessary for freeze protection, or low-leakage positive-closure dampers shall be provided.
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