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Gil Rossmiller

In the construction industry for over 30 years

ICC – IRC Plumbing & Mechanical Code Development Committee

ICC- IECC Commercial Energy Code Development Committee

Building Official Parker, Colorado

© Colorado Code Consulting, Inc. 2016

304.11 GuardsNew exceptionGuards are not required where permanent fall arrest/ restraint anchorage connector devices that comply with ANSI/ASSE Z 359.1 are affixed for use during the entire roof covering lifetime Roof with ≤ 3:12 pitch

Section 306.5.1 for roofs with > 3:13 pitch

306.1 AccessAppliances, controls devices, heat exchangers and HVAC system components that utilize energy shall be accessible for inspection, service, repair and replacement without disablingthe function of a fire-resistance-rated assembly or removing permanentConstruction……

307.2.5 Drain Line MaintenanceCondensate drainlines shall be configured to permit the clearing of blockages and performanceof maintenance without requiring the drain line to be cut.

307.3 Condensate PumpsCondensate pumps located in uninhabitable spaces, such as attics and crawl spaces, shall be connected to the appliance or equipment served such that when the pump fails, the appliance or equipment will be prevented from operating. Pumps shall be installed in accordance with the manufacturer’s instructions.

401.2 Ventilation Required….Ambulatory care facilities and Group I-2occupancies shall be ventilated by mechanical means in accordance with Section 407.

407.1 General. Mechanical ventilation for ambulatory care facilities and Group I-2 occupancies shall be designed and installed in accordance with this code and ASHRAE 170.

403.2.1 Recirculation of AirNotes b and g of Table 403.3.1.1 clarify that recirculation of air within a spaces permitted.

b. Mechanical exhaust required and the recirculation of air from such spaces is prohibited. Recirculation of air that is contained completely within such spaces shall not be prohibited

403.3 Outdoor Air and Local Exhaust Airflow RatesGroup R-2, R-3 and R-4 occupancies three stories and less in height above grade plane shall be provided with outdoor air and local exhaust in accordance with Section 403.3.2. …..

Matches ASHRAE 62.2 method

403.3.2.3 Local ExhaustLocal exhaust systems shall be provided in kitchens, bathrooms and toilet rooms and shall have the capacityto exhaust the minimum airflow rate determined in accordance with Table 403.3.2.3.

Table 403.3.1.1h. For nail salons, each manicure and pedicure station shall be provided with a source capture system capable of exhausting not less than 50 cfm per station. Exhaust inlets shall be located inaccordance with Section 502.20. Where one or more required source capture systems operate continuously during occupancy, the exhaust rate from such systems shall be permitted to beapplied to the exhaust flow rate required by Table 403.3.1.1 for the nail salon.

404.1 enclosed parking garages Where mechanical Ventilation systems for enclosed parking garages operate intermittently, such operation shall be automatic by means of carbon monoxide detectors applied in conjunction with nitrogen dioxide detectors. Such detectors shall be in-stalled in accordance with their manufacturers’ recommendations.

The option to run system on detection of vehicle or occupants was deleted.

501.3 Exhaust Discharge…shall be discharged outdoors at a point whereit will not cause a publicnuisance….. Air shall not be exhausted into an attic, crawl space, or be directed onto walkways

Adds exception #3 for listed ductless domestic range hoods to coordinate with 505.1 exception #1

502.20 Manicure and Pedicure Stations Manicure and pedicure stations shall be provided with an exhaust system in accordance with Table 403.3.1.1, note h. Manicure tables and pedicure stations not provided with factory-installed exhaust inlets shall be provided with exhaust inlets located not more than 12 inches horizontally and vertically from the point of chemical application.

504.5 Dryer Exhaust Duct Power VentilatorsDomestic dryer exhaust duct power ventilators shall be listed and labeled to UL 705 for use in dryer exhaust duct systems. The dryer exhaust duct power ventilator shall be installed in accordance with the manufacturer’s instructions.

504.8.4.3Length determined by listed ventilator installation instructions

504.8.2 Duct Installation……Ducts shall not be joined with screws or similar fasteners that protrude more than 1/8 inch into the inside of the duct.

505.3 Common Exhaust Systems for Domestic Kitchens Located in Multistory Structures Where a common multistory duct system is designed and installed to convey exhaust from multiple domestic kitchen exhaust systems, the construction of the system shall be in accordance with all of the following:

List of 12 requirements

506.3.7.1 Grease DuctReservoirs Grease duct reservoirs shall:3. Extend across the full width of the duct and have a length of not less than 12 inches.5. Have a bottom that slopes to a drain.

506.3.8 Grease Duct Cleanouts and OpeningsGrease duct cleanouts and openings shall comply with all of the following:

2. Sections of grease ducts that are inaccessible from the hood or discharge openings shall be provided with cleanout openings spaced not more than 20 feet apart and not more than 10 feet fromchanges in direction greater than 45 degrees.

506.3.11 Grease Duct Enclosures…….Fire dampers and smoke dampers shall not be installed in grease ducts.

506.5.1.2 In-Line Fan Location Where enclosed duct systems are connected to in-line fans not located outdoors, the fan shall be located in a room or space having the same fire resistance rating as the duct enclosure. Access shall be provided for servicing and cleaning of fan components. Such rooms or spaces shall be ventilated in accordance withthe fan manufacturers’ installation instructions.

506.5.3 Exhaust Fan Mounting Up-blast fans servingType I hoods and installed in a vertical or horizontal position shall be hinged, and supplied with a flexible weatherproof electrical cable to permit inspection and cleaning and shall be equipped with a means of restraint to limit the swing of the fan on its hinge. The ductwork shall extend a minimum of 18 inches (457 mm) above the roof surface.

507.1 GeneralCommercial kitchen exhaust hoods shall comply with the requirements of this section. Hoods shall be Type I or II and shall be designed to capture and confine cooking vapors and residues. A Type I or Type II hood shall be installed at or above all commercial cooking appliances in accordance with Sections 507.2 and 507.3. Where any cooking appliance under a single hood requires a Type I hood, a Type I hood shall be installed. Where a Type II hood is required, a Type I or Type II hood shall be installed. Where a Type I hood is installed, the installation of the entire system, including the hood, ducts, exhaust equipment and makeup air system shall comply with the requirements of Sections 506, 507, 508 and 509.

507.1.1 Operationshall have automatic controls that will activate the fan when any appliance that requires such Type I Hood is turned on……or a means of interlock shall be providedthat will prevent operation of such appliances……

the fan shall activate not more than 15-minutes after the first appliance, served by that hood, has been turned on….

exhaust volumes for hoods shall be permitted to be reduced during part-load cooking conditions

508.1.2 Air Balance Design plans for a facility with a commercial kitchen ventilation system shall include a schedule or diagram indicating the design outdoor air balance. The design outdoor air balance shall indicate all exhaust and replacement air for the facility, plus the net exfiltration if applicable. The total replacement air airflow rate shall equal the total exhaust airflow rate plus the net exfiltration.

514.2 Prohibited ApplicationsEnergy recovery ventilation systems shall not be used in the following systems:

Exception: The application of ERV equipment that recovers sensible heat only utilizing coil-type heat exchangers shall not be limited by this section.

602.1 General…..Plenums shall be limited to one fire area. Air systems shall be ducted from the boundary of the fire area served directly to the air handling equipment.

602.2 ConstructionPlenum enclosure construction materials that are exposedto the airflow shall comply with the requirements of Section 703.5 of the International Building Code or such materials shall have a flame spread index of not more than 25 and a smoke-developed index of not more than 50 when tested in accordance with ASTM E 84 or UL 723.

602.2.1.5 Discrete Plumbing and Mechanical Productsin Plenums Where discrete plumbing and mechanical productsand appurtenances are located in a plenum and have exposed combustible material, they shall be listed and labeled for such use in accordance with UL 2043.Discrete ProductProducts that are non-continuous, individual, distinctpieces such as, but not limited to, electrical, plumbing and mechanical products and duct straps, duct fittings, duct registers and pipe hangers.

1102.3 Access Port ProtectionRefrigerant access ports shall be protected in accordance with Section 1101.10 whenever refrigerant is added to or recovered from refrigeration or air conditioning systems.

Design loads shall be determined in accordance with the procedures described in ANSI/ASHRAE/ACCA Standard 183.

The design loads shall account for the building envelope, lighting, ventilation and occupancy loads based on the project design.

Heating and cooling loads shall be adjusted to account for load reductions that are achieved where energy recovery systems are utilized in the HVAC system in accordance with the ASHRAE HVAC Systems and Equipment Handbook.

The output capacity of heating and cooling equipment shall be not greater than the loads calculated in accordance with Section C403.2.1

Equipment shall meet the minimum efficiency requirements of Tables C403.2.3 (1) through C403.2.3 (9) when tested and rated in accordance with the applicable test procedure

Many tables have been updated

Shutoff dampersOutdoor air intake and exhaust openings and stairway and shaft vents shall be provided with Class I motorized dampers. air leakage rate not greater than 4 cfm/ft2 of damper

surface area at 1.0 inch water gauge and shall be labeled and tested in accordance with AMCA 500D

Automatic controls to close when not in use or during unoccupied period warm up

Exception: Gravity (nonmotorized) dampers shallbe permitted to be used as follows:1. In buildings less than three stories in height above grade plane2. In buildings of any height located in Climate Zones 1, 2 or 33. Where the design exhaust capacity is not greater than 300 cfm

Same as 2012 IECC

Gravity (nonmotorized) dampers shall have an airleakage rate not greater than 20 cfm/ft2 where not less than 24 inches in either dimension and 40 cfm/ft2 where less than 24 inches (610 mm) in either dimension. The rate of air leakage shall be determined at 1.0 inch waterGauge when tested in accordance with AMCA500D for such purpose. The dampers shall be labeledby an approved agency.

Zone isolationHVAC 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.

Economizer fault detection and diagnostics (FDD)Air-cooled unitary direct-expansion unitslisted in Tables C403.2.3(1) through C403.2.3(3) andvariable refrigerant flow (VRF) units that are equippedwith an economizer in accordance with Section C403.3shall include a fault detection and diagnostics (FDD)system complying with the following:

Hot water boiler outdoor temperature setback ControlHot 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.

Enclosed parking garage ventilation controlsEnclosed parking garages used for storing or handlingautomobiles operating under their own power shall employ contamination-sensing devices and automaticcontrols

Energy recovery ventilation systemsWhere the supply airflow rate of a fan system exceeds the values specified in Tables C403.2.7(1) and C403.2.7(2)New tables for operating more or less than 8000 hours per year

Kitchen exhaust systems Replacement air introduced directly into the exhaust

hood cavity shall not be greater than 10 percent of the hood exhaust airflow rate. Conditioned supply air delivered to any space shall not exceed the greater of the following:

Refrigeration equipment performanceRefrigeration equipment shall have an energy use inkWh/day not greater than the values of TablesC403.2.14(1) and C403.2.14(2) when tested and rated inaccordance with AHRI Standard 1200.

C403.2.15 Walk-in coolers, walk-in freezers, refrigerated warehouse coolers and refrigerated warehouse freezers.Refrigerated warehouse coolers and refrigerated warehouse freezers shall comply with this section. Walk-in coolers and walk-in freezers that are not either site assembled or site constructed shall comply with the following:

C403.2.16 Walk-in coolers and walk-in freezersSite assembled or site-constructed walk-in coolers and walk-in freezers shall comply with the following:

C403.2.17 Refrigerated display casesSite-assembled or site-constructed refrigerated display cases shall comply with the following:

Economizers (Prescriptive)Each cooling system shall include either an air or water economizer complying with Sections C403.3.1 through C403.3.4

Not required in climate zones other than 1A and 1B where individual cooling units have a capacity of less than 54,000 Btuh

Part-load controlsHydronic systems greater than or equal to 500,000 Btuh in design output capacity supplying heated or chilled water to comfort conditioning systems shall include controls that have the capability to do all of the following:

Was 300,000 in the 2012 IECC

Refrigeration systemsRefrigerated 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 C403.5.1 and C403.5.2.

Gil Rossmillergilrossmiller@coloradocode.net