2015 & 2012 International Mechanical Code Significant Changes and the PA Uniform Construction Code

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1 2015 & 2012 International Mechanical Code Significant Changes and the PA Uniform Construction Code

2 Welcome! Shawn Strausbaugh Director PMG Technical Resources ICC Government Relations

3 Housekeeping Sign in on the roster sheet legibly. All attendees who intend to use this course for CEU s must stay for the duration! Questions welcomed however if time becomes of essence we may hold discussion to the end of the presentation

4 ICC s Vision & Goals Safeguard public health, safety, and welfare by creating safe buildings and communities Enhance economic development and streamline regulatory system One set of nationwide building codes with consistent technical support

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6 PA Uniform Construction Code (UCC) On or after October 1, 2018, the 2015 International Codes issued by the International Code Council (ICC), and the provisions amended by the UCC Review & Advisory Council (RAC) are applicable to all work that requires a permit under the PA UCC. Only these codes as first published and their errata are applicable in Pennsylvania. If a contract for design or construction was signed prior to October 1, 2018 a permit can be issued using the 2009 I-Codes as amended by PA UCC previously. A construction permit application must be applied for before March 31, 2019 to ensure the use of the 2009 UCC codes.

7 PA Uniform Construction Code (UCC) Based upon the UCC Review & Advisory Council (RAC) Official review of the 2015 I-Codes no proposed amendments were acted upon specifically to the IMC. Note there were two amendment to the IRC Mechanical provisions. M exception 3 was amended to clarify that duct closure systems are still required for snap-lock and button-lock type joints and seams that are located outside of conditioned spaces. M item 2 was amended and states: The amount of return air taken from any perimeter room or space shall be not greater than the flow rate of supply air delivered to such room or space.

8 2012 IMC Significant Changes

9 102.3 Maintenance Modified: ASHRAE/ACCA/ANSI Standard 180 is now specified for the inspection for maintenance of the HVAC system. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

10 202 Environmental Air Clarified: The definition of environmental air has been expanded through the addition of parking garage exhaust. Parking garage Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

11 306.5 Equipment and Appliances on Roofs or Elevated Structures Modified: It has been clarified that permanent access is required to equipment and appliances on a roof or elevated structure higher than 16 feet above grade, and required clearances are now provided to assure access to ladders required for access to roofs or elevated structures. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

12 Roof access Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

13 Access ladder Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

14 Labeled Assemblies Modified: Allowable clearance reductions must now be based on listed and labeled reduced-clearance protective assemblies in accordance with UL Listed and labeled clearance protection assembly (Courtesy of Northwest Stoves) Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

15 Table Minimum Ventilation Rates for Nail Salons Modified: Nail stations in nail salons must now each be provided with a source capture system. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition Nail salon station

16 TABLE Minimum Ventilation Rates People Outdoor Airflow Rate In Breathing Zone R p CFM/Person Occupant Density #/1000 ft 2a Area Outdoor Airflow Rate In Breathing Zone R a CFM/FT 2a People Outdoor Airflow Rate In Breathing Zone R p CFM/Person Default Occupant Density #/1000 ft 2a Area Outdoor Airflow Rate In Breathing Zone R a CFM/FT 2a Occupancy Classification Beauty and nail salons b,h Nail Salons b,h Exhaust Airflow Rate CFM/FT 2a e. Rates are per water closet or urinal. The higher rate shall be provided where periods of heavy use are expected to occur, such as, toilets in theaters, schools, and sports facilities. The lower rate shall be permitted where periods of heavy use are not expected. The higher rate shall be provided where the exhaust system is designed to operate intermittently. The lower rate shall be permitted only where the exhaust system is designed to operate continuously while occupied. f. Rates are per room unless otherwise indicated. The higher rate shall be provided where the exhaust system is designed to operate intermittently. The lower rate shall be permitted only where the exhaust system is designed to operate continuously while occupied normal hours of use. h. For nail salons, the required exhaust shall include ventilation tables or other systems that capture the contaminants and odors at their source and are capable of exhausting a minimum of 50 cfm per station each nail station shall be provided with a source capture system capable of exhausting not less than 50 cfm per station. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

17 Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition 501.2, Independent Exhaust Systems Required Modified: Those locations where an independent exhaust system is required are now established in a single code provision. Independent exhaust system

18 505.1 Domestic Kitchen Exhaust Systems Modified: Domestic kitchen exhaust ducts are now required to be independent of all other exhaust systems. Independent domestic exhaust system Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

19 Grease Reservoirs Added: Criteria provided for the construction of a grease reservoir in a grease duct system where the reservoir is not a manufactured product. Grease reservoir Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

20 Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition Grease Duct Horizontal Cleanouts Horizontal grease duct cleanout opening Modified: Criteria for cleanouts serving horizontal grease ducts have been rearranged for ease of use and clarification, and several technical provisions have been added or modified.

21 Field-Applied Grease Duct Enclosures Clarified: Partially applied field-applied grease duct enclosure systems are now specifically prohibited from being used to reduce clearance to combustibles. Grease duct clearance Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

22 507.2 Type I Hoods Modified: Type I hoods no longer are required to be installed where complying electric cooking appliances are being used. Electric oven where a hood is not required (Courtesy of TurboChef Global) Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition 23 Page 94

23 601.4 Contamination Prevention in Plenums Modified: Chimneys and vents are now permitted to pass through a plenum where in compliance with one of three new allowances. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

24 Chimney or vent in a plenum Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

25 Materials within Plenums Clarified: It has been clarified that any material or assembly that encloses a combustible material in a plenum must be noncombustible, gypsum board or listed and labeled as part of a tested assembly or system. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

26 Material within a plenum Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

27 Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

28 603.7 Rigid Duct Penetrations Modified: In relationship to the required garage/dwelling separation, only those ducts that penetrate a wall or ceiling between the dwelling and the adjacent private garage need comply with Section Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

29 Duct penetration of a garage/dwelling separation Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

30 603.9 Duct Joints, Seams, and Connections Clarified: Unlisted duct tape is not longer permitted as a sealant on nonmetallic ducts. Listed duct tape (Courtesy of Venture Tape) Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

31 603.17, 202 Air Dispersion Systems Added: Air dispersion systems as defined in Section 202 and recognized in UL 2518 are now permitted to be installed. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

32 Air dispersion duct Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

33 805.3 Factory-Built Chimney Offsets Added: The maximum offset in a factory-built chimney is now specified and the number of offsets has been limited. Factory-built chimney offset Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

34 901.4 Fireplace Accessories Added: Fireplace accessories must now comply with UL 907, which has been added to Chapter 15. Listed outside air intake regulator for masonry fireplace Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

35 Locking Access Port Caps Modified: Locking caps are no longer required on refrigerant access ports if the refrigeration equipment is located in a secured location. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

36 Airconditioning unit in a secured location Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

37 1105.6, Machinery Room Ventilation Modified: The minimum ventilation rates in an ammonia machinery room must now be in accordance with IIAR2. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

38 Ammonia machinery room Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

39 Flammable Refrigerants Modified: The ventilation requirements of Section for ammonia machinery rooms are now mandatory in order to be exempted from the Class 1, Division 2 hazardous locations requirements of NFPA 70. Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

40 Ammonia machinery room Significant Changes to the International Plumbing, Mechanical and Fuel Gas Codes, 2012 Edition

41 2015 IMC Significant Changes

42 New or Revised Definitions New definition for Ductless Mini-Split System Extra Heavy-Duty Appliance & Heavy-Duty Cooking Appliance revised

43 Fall-Arresting Restraint Systems Change Type: Modification The exception allows for fall-arresting restraint systems to be employed instead of guards on roofs IPC, IMC and IFGC Update Webinar

44 404.1 Intermittent Operation of Mechanical Ventilation Systems for Enclosed Parking Garages CHANGE TYPE: Modification For enclosed parking garages, the ventilation system must: Operate continuously or Be automatically controlled for intermittent operation utilizing both carbon monoxide and nitrogen dioxide detectors. The option to detect vehicle operation or occupant presence has been deleted IPC, IMC and IFGC Update Webinar 45

45 Outdoor Air and Local Exhaust Airflow Rates CHANGE TYPE: Addition The new text introduces the basic requirements of ASHRAE 62.2 related to mechanical ventilation for Group R-2, R-3 and R-4 buildings three stories or less in height IPC, IMC and IFGC Update Webinar

46 504.5, Dryer Exhaust Duct Power Ventilators CHANGE TYPE: Addition New text recognizes the use of dryer exhaust duct power ventilators (DEDPVs) for installations that exceed the allowable exhaust duct length for clothes dryers.

47 Dryer Exhaust Duct Installation CHANGE TYPE: Modification Instead of prohibiting all duct fasteners such as screws and rivets, the code now limits the penetration of fasteners where installed. No more than 1/8 protrusion

48 505.3 Domestic Kitchen Exhaust Systems in Multistory Buildings CHANGE TYPE: Addition New text regulates the design and construction of exhaust shafts that serve domestic kitchen exhaust systems in multistory buildings. Similar to designs permitted previously for domestic clothes dryer exhaust. List of 12 different requirements addressing the many design considerations for the shaft and equipment.

49 Grease Duct Enclosures CHANGE TYPE: Modification The code specifically prohibits the installation of fire and smoke dampers in grease ducts.

50 Commercial Kitchen Exhaust Hood System Operation CHANGE TYPE: Modification The requirement for automatic activation of the exhaust system has been revised to provide the intended performance requirements. Clarifies that an interlock arrangement is an alternative to automatic hood operation.

51 Air Balance for Commercial Kitchen Ventilation Systems CHANGE TYPE: Addition This new section requires that an air balance schedule be submitted with the design plans for commercial kitchen ventilation systems IPC, IMC and IFGC Update Webinar

52 601.5 Return Air Openings CHANGE TYPE: Addition The often misunderstood provisions in previous editions of the code for return air have been relocated from a section specific to forcedair/warm-air furnaces in Chapter 9 to a more generic section in Chapter 6. The provisions have been clarified and streamlined to capture the desired intent.

53 602.1 Plenums Limited to One Fire Area CHANGE TYPE: Clarification The revision clarifies that a plenum in a fire area cannot be connected to a plenum in an adjoining fire area by means of transfer ducts or openings, This is regardless of the presence of fire dampers IPC, IMC and IFGC Update Webinar 55

54 2015 IMC Misc. Duct sizing in IMC Allows sizing per appliance mfgs installation instructions as an alternate to Manual D for single dwelling units. New definition for Ductless Mini-Split System & new section allows a check valve in lieu of a trap. Requirement for air filters in IMC 605.1expanded to all HVAC systems (not just central types) Now includes makeup air and outdoor air (not just return air)

55 603.9 Duct Joints, Seams and Connections CHANGE TYPE: Modification Duct sealant tapes used on sheetmetal ducts must be listed to UL 181B as is required for sealing tapes and mastics for flexible ducts. Snap-lock and button-lock seams are no longer exempt from the sealing requirements IPC, IMC and IFGC Update Webinar

56 701.2 Dampered Openings CHANGE TYPE: Addition Where dampers are installed on combustion air openings, the code now requires an interlock with the appliance to prevent operation of the appliance when the damper is closed. Manual dampers are prohibited on combustion air openings IPC, IMC and IFGC Update Webinar

57 2015 IMC Section 908 Cooling Towers Requirements for automated system bleed based on (new): Conductivity Metered makeup volume Metered bleed volume Pump runtime or bleed time Drift eliminators with <0.005% drift rate (new)

58 2015 IECC - Commercial Rooms containing fuel burning appliances Appliances and combustion air openings outside the building OR Enclosed in a room isolated from inside the thermal envelope (Except direct vent, compliant fireplaces/stoves Combustion air duct through conditioned space: R:8 Ducts in the room insulated to IECC Parking garage ventilation stage fans or modulate fan average airflow rates to: <50% of design capacity or Intermittently operate fans to <20% of the occupied time or Maintain contaminant levels per IMC New ERV table for % outdoor air operating >8000 hours annually Commissioning and how is the code official to deal with it?

59 2015 IECC - Commercial New section addressing Kitchen exhaust systems Duct and plenum insulation requirement revised outside the building and between duct and unconditioned space: R-8 insulation in climate zones 1 through 4 and a minimum of R-12 insulation in climate zones 5 through 8 High pressure duct rate of air leakage reduced from 6.0 to 4.0. Leakage testing per SMACNA HVAC Air Duct Leakage Test Manual Fan efficiency grade (FEG) > 67 per AMCA 205 Exempts fans under 5 hp, powered wall/roof ventilators, emergency fans, etc.

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64 Questions! Shawn Strausbaugh Director PMG Technical Resources ICC Government Relations