2018 iecc economizer requirements

Air economizer systems shall be configured to modulate, Systems shall be capable of relieving excess, Return, exhaust/relief and outdoor air dampers used in economizers shall comply with. This section has been amended at the state or city level. Individual exhaust fans with motor nameplate horsepower of 1 hp (0.746 kW) or less are exempt from the allowable fan horsepower requirement. 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. Ch. Determine Applicable Requirements Step BE1a. The lights are not incorrectly turned on by movement in adjacent areas or by HVAC operation. Freeze protection systems, such as heat tracing of outdoor piping and heat exchangers, including self-regulating heat tracing, shall include automatic controls configured to shut off the systems when outdoor air temperatures are above 40°F (4°C) or when the conditions of the protected fluid will prevent freezing. 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. Group A-2: Restaurants and banquet halls or buildings containing food preparation areas. 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. This includes supply fans, exhaust fans, return/relief fans, and fan-powered terminal units associated with systems providing heating or cooling capability. 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. 1 or No. Emergency lighting automatically off during normal business operation. This additional power shall be used only for the specified luminaires and shall not be used for any other purpose. Construction document. For purposes of this table, closed-circuit cooling tower performance is defined as the water flow rating of the tower at the thermal rating condition, divided by the sum of the fan nameplate-rated motor power and the spray pump nameplate-rated motor power. Where mechanical cooling is not specified or the mechanical cooling system in the proposed design does not require heat rejection, the system shall be treated as if the condenser water type were "Air." The 2018 IECC voting period ended in November of 2017. Buildings located at less than 23.5 degrees latitude shall use SEW for all orientations. 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. Walk-in coolers and walk-in freezers that are neither site assembled nor site constructed shall comply with the following: Be equipped with automatic door-closers that firmly close walk-in doors that have been closed to within 1 inch (25 mm) of full closure. LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS. The room or space containing the appliance shall be located outside of the, 2.1. A boiler not equipped with a tankless domestic water heating coil shall be equipped with an automatic means for adjusting the temperature of the water such that an incremental change in inferred heat load produces a corresponding incremental change in the temperature of the water supplied. Turn on the terminal fan as the first stage of heating before the heating coil is activated. An air barrier may be a single material or a combination of materials. A continuous air barrier shall be provided throughout the building thermal envelope. Lighting and switched receptacles controlled by card key controls. Exception: Where not less than 75 percent of all the replacement air is transfer air that would otherwise be exhausted. Lighting for nonvisual applications, such as plant growth and food warming, shall be controlled by a time switch control complying with. 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. 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. 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. db = dry bulb temperature, °F, wb = wet bulb temperature, °F. Ch. The floor area for all products not listed in Retail Area 2, 3 or 4. 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. Copies of all spreadsheets used to perform the calculations. Exception: Centrifugal open-circuit cooling towers that are designed with inlet or discharge ducts or require external sound attenuation. Is equipped at the point of manufacture with an activation lock. The preheating required to raise the peak service hot water draw to 85°F (29°C). Skylight area = Total fenestration area of skylights. Piping at locations where a vertical support of the piping is installed. The following systems and loads shall be included in determining the total building performance: heating systems, cooling systems, service water heating, fan systems, lighting power, receptacle loads and process loads. Individual fan systems with cooling capacity greater than or equal to 270,000 Btu/h (79.1 kW) in buildings having a Group R occupancy. For fans less than 6 bhp (4413 W), 1.5 times the fan brake horsepower. Skylight VT = Area weighted average visible transmittance of skylights. Facilities that provide 60 percent of their service water heating from site solar or site recovered energy or from other sources. 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. Gravity and thermo-syphon circulation systems shall be prohibited. 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. 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. 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. Air temperature sensor failure/fault. For SI: 1 cfm = 0.4719 L/s; 1 foot = 305 mm. 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. Multiple units of the same equipment type with combined capacities exceeding the design load and provided with controls that are configured to sequence the operation of each unit based on load. Automatic time clock or programmable controls shall be capable of starting and stopping the system for seven different daily schedules per week and retaining their programming and time setting during a loss of power for not fewer than 10 hours. The wattage limit of the permanent current-limiting 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. Permit submittals shall include a report documenting that the proposed design has annual energy costs less than or equal to the annual energy costs of the standard reference design. F = The measured leakage rate in cfm per 100 square feet of duct surface. 2.3. 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. Portions of the roof shaded during the peak sun angle on the summer solstice by permanent features of the building or by permanent features of adjacent buildings. Effective January 1, 2020, walk-in coolers and walk-in freezers shall meet the requirements of Tables C403.10.2.1(1), C403.10.2.1(2) and C403.10.2.1(3). 2 Definitions. Exception: Control of heating or cooling provided by site-recovered energy or transfer air that would otherwise be exhausted. 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. Do not copy, distribute, or disclose. Generation of an alarm to the system operational location. HVAC system design and economizer controls shall be such that economizer operation does not increase building heating energy use during normal operation. 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. Thermostats requiring manual changeover between heating and cooling modes. Systems where dehumidification requirements cannot be met using outdoor air temperatures of 50°F (10°C) dry bulb/45°F (7°C) wet bulb and where 100 percent of the expected system cooling load at 45°F (7°C) dry bulb/40°F (4°C) wet bulb is met with evaporative water economizers. Switching the middle lamp luminaires independently of the outer lamps. 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. Where energy recovery systems are prohibited by the. This proposal does not change code requirements, only updates definitions and reduces redundancy. FLadj = Maximum full-load kW/ton rating, adjusted for nonstandard conditions. Assembly descriptions can be found in ANSI/ASHRAE/IESNA Appendix A. R-5.7ci is allowed to be substituted with concrete block walls complying with ASTM C90, ungrouted or partially grouted at 32 inches or less on center vertically and 48 inches or less on center horizontally, with ungrouted cores filled with materials having a maximum thermal conductivity of 0.44 Btu-in/h-f. Where heated slabs are below grade, below-grade walls shall comply with the exterior insulation requirements for heated slabs. Energy codes are a subset of building codes, which establish baseline requirements and govern … Economizers shall comply with Sections C403.5.1 through C403.5.5. High-limit shutoff control types for specific climates shall be chosen from Table C403.5.3.3. functionality. SEER values are those set by NAECA. Condenser fan motors that are less than 1 hp (0.746 kW) shall use electronically commutated motors, permanent split capacitor-type motors or 3-phase motors. Heaters and pump motors that have built-in time switches shall be in compliance with this section. Advertising signage or directional signage. 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. Lighting that is required to have specific application control in accordance with. 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. requirement (NR) SHGC = 0.40 shall be used. IPLV = Value as specified in Table C403.3.2(7). The IECC 2018 combined with local jurisdiction amendments form the state codes. The sensor must feature manual-ON or auto-ON-to-maximum-50-percent-power operation and provide manual-OFF override capability to occupants. Additional interior lighting power allowance = 1000 W + (Retail Area 1 × 0.45 W/ft2) + (Retail Area 2 × 0.45W/ft2) + (Retail Area 3 × 1.05 W/ft2) + (Retail Area 4 × 1.87 W/ft2). 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. In determining compliance with Table C402.1.4, the use of the U-factor of concrete masonry units with integral insulation shall be permitted. At minimum speed the fan system shall draw not more than 30 percent of the power at full fan speed. 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. 3.2. Never miss important differences made to the code. Interior spaces shall be those located more than 15 feet (4572 mm) from an exterior wall. FINAL INSPECTION REQUIREMENTS FOR . Fan motor power input shall be not more than 30 percent of design wattage at 50 percent of the design airflow. ICF proprietary and confidential. Name and version of the compliance software tool. 3.1. Piping surrounded by building insulation with a thermal resistance (, For a public lavatory faucet, use the "Public lavatory faucets" column in, For all other plumbing fixtures and plumbing appliances, use the "Other fixtures and appliances" column in. Don't miss relevant code. The volume from the nearest source of heated water to the termination of the fixture supply pipe shall be as follows: Demand recirculation water systems shall have controls that comply with both of the following: Time switches or other control methods that can automatically turn off and on heaters and pump motors according to a preset schedule shall be installed for heaters and pump motors. Exception: Heat rejection devices where energy usage is included in the equipment efficiency ratings listed in Tables C403.3.2(6) and C403.3.2(7). Is attached by means of nonwater-soluble adhesive. Each hydronic heat pump on the hydronic system having a total pump system power exceeding 10 hp (7.5 kW) shall have a two-position valve. High-limit shutoff control settings for these control types shall be those specified in Table C403.5.3.3. UAV = Sum of the (UA Proposed) values for each vertical glazing assembly. Design loads associated with heating, ventilating and air conditioning of the building shall be determined in accordance with ANSI/ASHRAE/ACCA Standard 183 or by an, Mechanical systems shall be designed to comply with Sections, Ventilation, either natural or mechanical, shall be provided in accordance with Chapter 4 of the, Heating and cooling equipment installed in mechanical systems shall be sized in accordance with, matching condensers and complying with air-cooled chiller, Equipment with a leaving fluid temperature higher than 32°F (0°C) and water-cooled positive displacement chilling packages with a condenser leaving fluid temperature below 115°F (46°C) shall meet the requirements of, Each heating and cooling system shall be provided with controls in accordance with Sections. 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-. Section. 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. Motors in space-conditioning equipment that comply with. Where located within a building envelope assembly, the duct or plenum shall be separated from the building exterior or unconditioned or exempt spaces by not less than R-8 insulation in Climate Zones 1 through 4 and not less than R-12 insulation in Climate Zones 5 through 8. Motors in the airstream within fan coils and terminal units that only provide heating to the space served. IECC 2018 Daylight Zone Requirements IECC 2018 Daylight Zone Requirements: Sidelighted daylight zones must be controlled separately from toplighted zones. 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. Industrial production, material handling, transportation sites and associated storage areas. Economizer controls and dampers shall be configured to sequence the dampers with the mechanical cooling equipment and shall not be controlled by only mixed-air temperature. 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. Sixty percent of the peak heat rejection load at design conditions. 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. Required routine maintenance actions, cleaning and recommended relamping shall be clearly identified. The efficiencies and test procedures for both open- and closed-circuit cooling towers are not applicable to hybrid cooling towers that contain a combination of wet and dry heat exchange sections. 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. 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). In cases where both a common space type and a building area specific space type are listed, the building area specific space type shall apply. Daylight controlled lighting loads adjust to light level setpoints in response to available daylight. They shall have a clock capable of being programmed for not fewer than 7 days. 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. Have program backup capabilities, which prevent the loss of program and time settings for not fewer than 10 hours, if power is interrupted. "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. 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. 2018 IECC Commercial Scope and Envelope Requirements. Systems with central electric resistance heat, Dedicated condensing, medium temperature, indoor system. The report shall include the following: Exception: Deferred tests that cannot be performed at the time of report preparation due to climatic conditions. Systems expected to operate less than 20 hours per week. Other DX units, including those that control space temperature by modulating the airflow to the space, shall be in accordance with. The unit shall be configured to report faults to a fault management application available for. The energy consumption of electric-powered portable spas shall be controlled by the requirements of APSP 14. Kansas City, for example, is in Climate Zone 4A (See figure 1). 2.1. The floor area used for the sale of furniture, clothing, cosmetics and artwork. 3.2. Piping from user-controlled shower and bath mixing valves to the water outlets. Doorways shall be provided with strip doors, curtains, spring-hinged doors or other method of minimizing infiltration when the doors are open. stringency were identified between the 2015 and 2018 IECC. In addition, commer- Comply with the roof solar reflectance and thermal emittance provisions for. The calibration adjustment equipment is located for. An explanation of any error or warning messages appearing in the simulation tool output. C = Sum of the (CA Dif) values for each distinct below-grade wall assembly type of the building thermal envelope. For SI: 1 bhp = 735.5 W, 1 hp = 745.5 W, 1 cfm = 0.4719 L/s. Controls shall be provided on each HVAC system that are capable of and configured to automatically raise the cooling setpoint and lower the heating setpoint by not less than 4°F (2°C) from the occupant setpoint within 30 minutes after the occupants have left the guestroom. 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. 4.2. The label shall include the title or publication number for the operation and maintenance manual for that particular model and type of product. Exception: Automatic closers are not required for doors more than 45 inches (1143 mm) in width or more than 7 feet (2134 mm) in height. The measured air-leakage rate of the building envelope shall not exceed 0.25 cfm/ft2 (2.0 L/s x m2) under a pressure differential of 0.3 inches water column (75 Pa), with the calculated surface area being the sum of the above- and below-grade building envelope. Doors not intended to be used by the public, such as doors to mechanical or electrical equipment rooms, or intended solely for employee use. Buildings shall comply with one or more of the following: Tenant spaces shall comply with Section C406.2, C406.3, C406.4, C406.6 or C406.7. Where the design temperature difference between the interior and exterior of the duct or plenum is not greater than 15°F (8°C). 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 override switch, when initiated, shall permit the controlled lighting to remain on for not more than 2 hours. Chapter 6 contains a complete specification of the referenced test procedure, including the reference year version of the test procedure. Where the unit's capacity is less than 7000 Btu/h, use 7000 Btu/h in the calculation. The first value is for perimeter insulation and the second value is for full slab insulation. Residential Buildings: One- and two-family … 3.1. Leverage the full code compliance platform. For SI: 1 British thermal unit per hour = 0.2931 W. MINIMUM EFFICIENCY REQUIREMENTS: ELECTRICALLY OPERATED UNITARY AND APPLIED HEAT PUMPS. Refer to Table C402.2 for minimum R-Values and U-factors for Submittal data indicating all selected options for each piece of lighting equipment and lighting controls. registered design professional or approved agency shall provide evidence of mechanical systems commissioning and completion in accordance with the provisions of the IECC. IECC Committee Passes New EV-Ready Code Requirements May 28, 2019 The International Code Council (ICC) code hearings were held the first week of May in Albuquerque to determine which of the proposed code amendments will be considered for adoption in the 2021 model building code. Time-switch controls to turn off lights during nonbusiness hours. 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. An alternate compliance path is described in WSEC Figure 14A and Chapter 4 – Systems Analysis. The switch only operates lighting in the enclosed space in which the switch is located. The controls shall be configured to reset the supply air temperature not less than 25 percent of the difference between the design supply-air temperature and the design room air temperature. 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. In buildings less than three stories in height above grade plane. Select the standard reference design HVAC system category: The system under "single-zone residential system" shall be selected where the HVAC system in the proposed design is a single-zone system and serves a Group R occupancy. 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. 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. Additional power shall be permitted only where the specified lighting is installed and automatically controlled separately from the general lighting, to be turned off during nonbusiness hours. 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. 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. Ch. Systems that have one warm air duct and one cool air duct shall use terminal devices that are configured to reduce the flow from one duct to a minimum before mixing of air from the other duct takes place. They shall incorporate a manual control to allow occupants to turn off lights. FL Table = (F-factor specified in Table C402.1.4) x Perimeter length. FL represents the full-load performance requirements and IPLV the part-load performance requirements. June 3, 2020 31 2. Condenser fans serving flooded condensers. Lighting for covered vehicle entrances and exits from buildings and parking structures where required for eye adaptation. proposed design, no service hot water heating shall be modeled. Walk-in coolers, walk-in freezers, refrigerated warehouse coolers and refrigerated warehouse freezers shall comply with Section C403.10.1 or C403.10.2. Two mandatory requirement changes were however identified that apply to all compliance calculations—an HVAC register 1 Note “d” under Table R402.1.2 adds a requirement for R-5 insulation to be added under heated slabs, but the change is unlikely to apply to many Florida homes and was not evaluated. Ch. Input and output reports from the energy analysis simulation program containing the complete input and output files, as applicable. (498 Pa) but less than 3 inches w.g. Air barrier joints and seams shall be sealed, including sealing transitions. Where the largest source of air exhausted at a single location at the building exterior is less than 75 percent of the design, Systems expected to operate less than 20 hours per week at the. These inputs help surface the applicable codes and requirements. The connected power associated with the following lighting equipment and applications is not included in calculating total connected lighting power. 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. Otherwise: D = (DA x UV) - (DA x U Wall), but not less than zero. For other plumbing fixtures or plumbing appliances; not more than 0.5 gallon (1.89 L). PD = Each applicable pressure drop adjustment from Table C403.8.1(2) in. The requirements of ANSI/ASHRAE/IESNA 90.1. Automatically vary fluid flow for hydronic systems with a combined pump motor capacity of 2 hp (1.5 kW) or larger with three or more control valves or other devices by reducing the system design flow rate by not less than 50 percent or the maximum reduction allowed by the equipment manufacturer for proper operation of equipment by valves that modulate or step open and close, or pumps that modulate or turn on and off as a function of load. 2.3. Building facade and landscape lighting shall automatically shut off from not later than 1 hour after business closing to not earlier than 1 hour before business opening. )(75 Pa) when tested in accordance with ASTM E2357, ASTM E1677 or ASTM E283 shall comply with this section. The system characteristics shall be identical in both the standard reference design and proposed design. Light sources shall have an efficacy of not less than 40 lumens per Watt, including any ballast losses, or shall be provided with a device that automatically turns off the lights within 15 minutes of when the. MINIMUM PERFORMANCE OF WATER-HEATING EQUIPMENT. Solid or hollow masonry constructed of clay or shale masonry units. 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. Supply and return air ducts and plenums shall be insulated with not less than R-6 insulation where located in unconditioned spaces and where located outside the building with not less than R-8 insulation in Climate Zones 1 through 4 and not less than R-12 insulation in Climate Zones 5 through 8.

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