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CITY OF SANTA ANA
<br />Planning and Building Agency
<br />a
<br />2022 Single -Family Residential Mandatory Requirements S�mmaryftproved
<br />Pilot Lights. Continuously bum ing pilot lights are prohibited for natural gas: fan -type central furnaces;
<br />h u�� I i li
<br />§ 110.5:
<br />(except appliances without an electrical supply voltage connection with pilot lights that consume less
<br />*
<br />han 150 Btu per hour ); and pool and
<br />spa heaters.
<br />Building Cooling and Heating Loads. Heating and/or cooling loads are calculated in accordance w
<br />tf4sWe. Handbook,
<br />§ 150.0(h)1:
<br />Equipment Volume, Applications Volume, and Fundamentals Volume; the SMACNA Residential Com
<br />oOstem Installation
<br />Standards Manual; or the ACCA Manual J using design conditions specified in § 150.0(h)2.
<br />a e:
<br />§ 150.0(h)3A:
<br />Clearances. Air conditioner and heat pump outdoor condensing units must have a clearance of at least five feet from the outlet of any
<br />dryer.
<br />§ 150.0(h)3B:
<br />Liquid Line Drier. Air conditioners and heat pump systems must be equipped with liquid line filter driers if required, as specified by the
<br />manufacturer's instructions.
<br />Water Piping, Solar Water -heating System Piping, and Space Conditioning System Line Insulation. All domestic hot water
<br />150.0 1:
<br />piping must be insulated asspecified in § 609.11 of the California Plumbing Code. *
<br />Insulation Protection. Piping insulation must be protected from damage, including that due to sunlight, moisture, equipment'
<br />§ 150.00)2:
<br />maintenance, and wind as required by §120.3(b). Insulation exposed to weather must be water retardant and protected from UV light (no
<br />adhesive tapes). Insulation covering chilled water piping and refrigerant suction piping located outside the conditioned space must
<br />include, or be protected by, a Class I or Class II vapor retarder. Pipe insulation buried below grade must be installed in a waterproof and
<br />non -crushable casing or sleeve.
<br />Gas or Propane Water Heating Systems. Systems using gas or propane water heaters to serve individual dwelling units must
<br />designate a space at least 2.5' x 2.5' x 7' suitable for the future installation of a heat pump water heater, and meet electrical and
<br />§ 150.0(n)1:
<br />plumbing requirements, based on the distance between this designated space and the water heater location; and a condensate drain no
<br />more than 2" higher than the base of the water heater
<br />Solar Water -heating Systems. Solar water -heating systems and collectors must be certified and rated by the Solar Rating and
<br />§ 150.0(n)3:
<br />Certification Corporation (SRCC), the International Association of Plumbing and Mechanical Officials, Research and Testing (IAPMO
<br />R&T), or by a listing agency that is approved by the executive director.
<br />Ducts and Fans:
<br />Ducts. Insulation installed on an existing space -conditioning duct must comply with § 604.0 of the California Mechanical Code (CMC). If a
<br />§ 110.8(d)3:
<br />contractor installs the insulation, the contractor must certify to the customer, in writing, that the insulation meets this requirement.
<br />CMC Compliance. All air -distribution system ducts and plenums must meet CMC §§ 601.0-605,0 and ANSI/SMACNA-006-2006 HVAC
<br />Duct Construction Standards Metal and Flexible 3rd Edition. Portions of supply -air and return -air ducts and plenums must be insulated to
<br />R-6.0 or higher; ducts located entirely in conditioned space as confirmed through field verification and diagnostic testing (RA3.1.4,3.8)
<br />do not require insulation. Connections of metal ducts and inner core of flexible ducts must be mechanically fastened. Openings must be
<br />§ 150.0(m)1:
<br />sealed with mastic, tape, or other duct -closure system that meets the applicable UL requirements, or aerosol sealant that meets UL 723.
<br />The combination of mastic and either mesh or tape must be used to seal openings greater than V4", If mastic or tape is used. Building
<br />cavities, air handler support platforms, and plenums designed or constructed with materials other than sealed sheet metal, duct board or
<br />flexible duct must not be used to convey conditioned air. Building cavities and support platforms may contain ducts; ducts installed in
<br />theses aces must not be compressed. *
<br />Factory -Fabricated Duct Systems. Factory -fabricated duct systems must comply with applicable requirements for duct construction,
<br />§ 150.0(m)2:
<br />connections, and closures; joints and seams of duct systems and their components must not be sealed with cloth back rubber adhesive
<br />duct tapes unless such toe is used in combination with mastic and draw bands.
<br />Field -Fabricated Duct Systems. Field -fabricated duct systems must comply with applicable requirements for: pressure -sensitive tapes,
<br />§ 150.0(m)3:
<br />mastics, sealants, and other requirements specified for duct construction.
<br />§ 150.0(m)7:
<br />Backdraft Damper. Fan systems that exchange air between the conditioned space and outdoors must have backdraft or automatic
<br />dampers.
<br />§ 150.0(m)8:
<br />Gravity Ventilation Dampers. Gravity ventilating systems serving conditioned space must have either automatic or readily accessible,
<br />manually operated dampers in all openings to the outside, except combustion inlet and outlet air openings and elevator shaft vents.
<br />Protection of Insulation. Insulation must be protected from damage due tosunlight, moisture, equipment maintenance, and wind.
<br />§ 150.0(m)9:
<br />Insulation exposed to weather must be suitable for outdoor service (e.g., protected by aluminum, sheet metal, painted canvas, or plastic
<br />cover). Cellular foam insulation must be protected as above or painted with a water retardant and solar radiation -resistant coating.
<br />§ 150.0(m)10:
<br />Porous Inner Core Flex Duct. Porous inner cores of flex ducts must have a non -porous layer or air barrier between the inner core and
<br />outer vapor barrier.
<br />Duct System Sealing and Leakage Test. When space conditioning systems use forced air duct systems to supply conditioned air to an
<br />§ 150.0(m)11:
<br />occupiable space, the ducts must be sealed and duct leakage tested, as confirmed through field verification and diagnostic testing, in
<br />accordance with Reference Residential Appendix RA3.1.
<br />Air Filtration. Space conditioning systems with ducts exceeding 10 feet and the supply side of ventilation systems must have MERV 13
<br />§ 150.0(m)12:
<br />or equivalent filters. Filters for space conditioning systems must have a two inch depth or can be one inch if sized per Equation 150.0-A.
<br />Clean -filter pressure drop and labeling must meet the requirements in §150.0(m)12. Filters must be accessible for regular service. Filter
<br />racks or grilles must use gaskets, sealing, or other means to close gaps around the inserted filters to and prevents air from bypassing the
<br />filter. *
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