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CITY OF SANTA ANA
<br />2022 Single -Family Residential Mandatory Requirements Summary
<br />Energy Storage System (ESS) Ready. Al single-family residences must meet all of the following: Either ESS-ready interconnection
<br />§ 150.0(s)
<br />equipment with backed up capacity of60 amps or more and four or more ESS supplied branch circuits, Lr a dedicated raceway from the
<br />main service to a subpanel that supplies the branch circuits in § 150.0(s); at least four branch circuits must be identified and have their
<br />source collocated at a single panelboard suitable to be supplied by the ESS, with one circuit supplying the refrigerator, one lighting circuit
<br />near the primaryexit, and one circuit supplying a sleeping room receptacle outlet, main panelboard crust have a minimum busbar rating of
<br />225 amps,- sufficient space must be reserved to allow future installation of system isolation equipment/transfer switch within 3' of the main
<br />panelboard, with raceways installed between the panelboard and the switch location to allow the connection of backup power source.
<br />§ 150.0(tj
<br />Heat Pump Space Heater Ready. Systems using gas or propane furnaces to serve individual dwelling units must include: A dedicated
<br />unobstructed 240V branch circuit wiring installed within 3' of the furnace with circuit conductors rated at least 30 amps with the blank cover
<br />identified as "240V ready, and a reserved main electrical service panel space to allow for the installation of a double pole circuit breaker
<br />permanently marked as "For Future 240V use"
<br />Electric Cooktop Ready. Systems using gas or propane cooktop to serve individual dwelling units must include: A dedicated unobstructed
<br />§ 150.0(u)
<br />240V branch circuit wiring installed within 3' of the cooktop with circuit conductors rated at least 50 amps with the blank cover identified as
<br />'240V ready; and a reserved main electrical service panel space to allow for the installation of a double pole circuit breaker permanently
<br />marked as "For Future 240V use."
<br />Electric Clothes Dryer Ready. Clothes dryer locations with as or propane plumbing to serve individual dwelling units must include: A
<br />ry Y Y 9 P P p 9 9
<br />§ 150.0(v)
<br />dedicated unobstructed 240V branch circuit wiring installed within 3' of the dryer location with circuit conductors rated at least 30 arms with
<br />the blank cover identified as "240V ready;' and a reserved main electrical service panel space to allow for the installation of a double pole
<br />circuit breaker permanently marked as "For Future 240V use"
<br />*Exceptions may apply.
<br />i,1c�yxa
<br />2022 Single -Family Residential Mandatory Requirements Summary
<br />Space Conditioning System Airfl ow Rate and Fan Efficacy. S pace conditioning systems that use ducts to supply coo ling must have
<br />a hole for the placement of a static pressure probe, or a permanently installed static pressure probe in the supply plenum. Airflow must
<br />7 G
<br />be - 350 CFM per ton of nominal cooling capacity, and an air -handling unit fan efficac - 0.45 waits per CFM for as furnace air
<br />150.0 m 13:
<br />§ () P 9 P Y. g Y P 9
<br />handlers and <0.58 watts per CFM for all others. Small duct high velocity systems must provide an airflow2t 250 CFM per ton of nominal
<br />cooling capacity, and an air -handling unit fan efficacys 0.62 watts per CFM. Field verification testing is required in accordance with
<br />Reference Residential Appendix RA3.3 "
<br />Ventilation and Indoor Air OLiality-
<br />Requirements for Ventilation and Indoor Air Quality. All dwelling units must meet the requirements of ASHRAE Standard 62.2,
<br />§ 150.0(o)1:
<br />Ventilation and Acceptable Indoor Air Quality in Residential Buildings subject to the amendments specified in§ 150.0(o)1. *
<br />Central Fan Integrated CFI Ventilation Systems. Continuous operation of CFI air handlers is not allowed to provide the whole-
<br />g (CFI)Y P
<br />§ 150.0(0)1B:
<br />dwelling unit ventilation airflow required per §150.0(o)1C. A motorized damper(s) must be installed on the ventilation duct(s) that
<br />prevents all airflow through the space conditioning duct system when the damper(s) is closed andcontrolled per §150.0(o)18iii&jv. CFI
<br />ventilation systems must have controls that track outdoor air venti lation run time, and either open or close the motorized damper(s) for
<br />compliance with 150.0 0 1C.
<br />Whole -Dwelling Unit Mechanical Ventilation for Single -Family Detached and townhouses. Single-family detached dwelling units,
<br />§ 150.0(o)1C:
<br />and attached dwelling units not sharing ceilings or floors with other dwelling units, occupiable spaces, public garages, or commercial
<br />spaces must have mechanical ventilation airflow specified in § 150.0(0)10-iii.
<br />§ 150.0(o)IG:
<br />Local Mechanical Exhaust. Kitchens and bathrooms must have local mechanical exhaust; nonenclosed kitchens must have demand -
<br />controlled exhaust system meeting requirements of§150.0(o)1Giii,enclosed kitchens and bathrooms can use demand -controlled or
<br />continuous exhaust meeting §150.0(o)lGiii-iv. Airflow must be measured by the installer per §150.0(o) 1Gv, and rated for sound per
<br />150.0 0 1Gvi.'
<br />§ 150.0(o)1H&l:
<br />Airflow Measurement and Sound Ratings of Whole -Dwelling Unit Ventilation Systems. The airflow required per § 150.0(o)1C must
<br />be measured by using a flow hood, flow grid, or other airflow measuring device at the fan's inlet or outlet terminals/grilles per Reference
<br />Residential Appendix RA3.7 Whole -Dwelling unit ventilation systems must be rated for sound per ASHRAE 62.2 §7.2 at no less than the
<br />minimum airflow rate required bv 150.0 0 1C.
<br />Field Verification and Diagnostic Testing. Whole -Dwelling Unit ventilation airflow, vented range hood airflow and sound rating,
<br />§ 150.0(o)2:
<br />and HRV and ERV fan efficacy must be verified in accordance with Reference Residential Appendix RA3.7. Vented range hoods
<br />must be verified per Reference Residential Appendix RA3.7.4.3 to confirm if it is rated by HVI or ARAM to comply with the airflow
<br />rates and sound requirements per §150.0(o) I G
<br />Pool and Soa Svstems and Eautoment:
<br />Certification by Manufacturers. Any pool or spa heating system or equipment must be certified to have all of the followin g: compliance
<br />§ 110.4(a):
<br />with the Appliance Efficiency Regulations and listing in MAEDbS, an on -off switch mounted outside of the heater that allows shutting off
<br />the heater without adjusting the thermostat setting, a permanent weatherproof plate or card with operating instructions; and must not
<br />use electric resistanceheatin .
<br />Piping. Any pool or spa healing system or equipment must be installed with at least 36 inches of pipe between the filter and the heater, or
<br />§ 110.4(b)1:
<br />dedicated suction and return lines, or built-in or built-up connections to allow for future solar heating.
<br />§ 110.4(b)2:
<br />Covers. Outdoor pools or spas that have a heat pump or gas heater must have a cover.
<br />Directional Inlets and Time Switches for Pools. Pools must have directional inlets that adequately mix the pool water, and a time
<br />§ 110.4(1b)3:
<br />switch that will allow all pumps 10 be set or programmed to run only during off peak electric demand periods.
<br />§ 110.5:
<br />Pilot Light. Natural gas pool and spa heaters must not have a continuously burning pilot light.
<br />Pool Systems and Equipment Installation. Residential pool systems or equipment must meet the specified requirements for pump
<br />§ 150.0(p).
<br />sizing, flow rate, piping, filters, and valves.
<br />Liahtina-
<br />Lighting Controls and Components. Al lighting control devices and systems, ballasts, and luminaires must meet the applicable
<br />§ 110.9:
<br />re uirements of 110.0 x
<br />§ 150.0(k)1A:
<br />Luminaire Efficacy. All installed luminaires must meet the requirements in Table 150.0-A, except lighting integral to exhaust fans, kitchen
<br />range hoods, bath vanity mirrors, and garage door openers, navigation light ng less than 5 watts, and lighting internal to drawers, cabinets, and linen
<br />closets with an efficacy of at least 45 lumens per watt.
<br />150.0(k)1 B:
<br />Screw based luminaires. Screw based luminaires must contain lamps that comply with Reference Joint Appendix JAB,*
<br />§ 150.0(k) IC:
<br />Recessed Dowd ight Luminaires 1n Ceilings. Luminaires recessed into ceilings must not contain screw based sockets, must be airtight,
<br />and must be sealed with a gasket or caulk. California Electrical Code § 410.116 must also be met.
<br />Light Sources in Enclosed or Recessed Luminaires. Lamps and other separable light sources that are not compliant with the JAB
<br />§ 150.0(k)1D:
<br />elevated temperature requirements, including marking requirements, must not be installed in enclosed or recessed luminaires.
<br />§ 150.0(k)1E:
<br />Blank Electrical Boxes. The number of electrical boxes that are more than five feel above the finished floor and do not contain a
<br />Luminaire or other device shall be no more than the number of bedrooms. These boxes must be served by a dimmer, vacancy sensor
<br />control, low volla e wiring, or fanspeed control.
<br />Lighting Integral to Exhaust Fans. Lighting integral to exhaust fans (except when installed by the manufacturer in kitchen exhaust
<br />§ 150.0(k) lE
<br />hoods) must meet the applicable requirements of § 150.0 k . x
<br />516/22
<br />2022 Single -Family Residential Mandatory Requirements Summary
<br />§ 1:50.Qk'j1G: Screwy based luminaires _:_iewnsad lumrares misi conlan lamps t-ral corr'irlywrth RaierenceJoint Appendix,J.A6.'
<br />Light Sources in Enclosed or Recessed Luminaires. Lamps and ct-ier separable light sourm that are not compliant with the JAB
<br />§ 15Cr.Qk)1H.elevated lempe-aluie iii-quiierrent:.. mr: uJmg ma•krig requrements, Nnust not be rn5talled'n enclosed or recessed luminaires.
<br />Light Sourcers in Drawers, Catwnets, and Linen Closets, tight source interval todrawers. cabinetvy or linen ckmts are not required
<br />150.Cn;k)1 I: to comply watt 1 able 1:50.0-A or be controlled by vacancy sensors provided that they are rated to consume no more than 5 waits of
<br />power. emit no more than 1.50 lumens, and are equipped with co'ntrds that automatically tirn t've lighting off when the drawer. cabinet or
<br />Inert doset is closed.
<br />1a0.0(k)2A Interior Switches and Controls. All forward phaise cart dirniers used with LED light sources must comply with HEMA, SSL 7f'c
<br />1 l]:f1(kj2tl: Interior Switches and Controls. Waist fans mud be canti'dled separately from lighting syskmrs. t
<br />Accessible Controls. _igh.ing must have readily accessible wall -mounted controls that allow the lighting to be manually turned
<br />§ 1.50.1(k)2A an and off. .
<br />Multiple controls. cor'lirals must not bypass a r wnmer. oGtu pant sensor, or vacancy sensor unction 9 the dimmer or senso7 s metalled
<br />6130.t1r(k)2B: to com 'v writfi 1511.OIk1.
<br />5150:0(k)2C: Mandatory Requirements. Lghting controls must comply with the applicable requirernants of § 110.9.
<br />Energy Management Control Systems. An a ergy managgerivenl cinbred system (FMCS) may be used Dry crornply with dimming.
<br />150_0(k)2D_ occupari y. and cantirdi requirements 0 it provides be functionality of the spenfied control per § 110.9 and the physical controls specilfiad
<br />in 150.01'k12A
<br />Automabc Shutoff Controls. In batrinx: -rrs, garages, laundry rooms, utility{ rooms and wakAn closets, at least erne vrrslallEJ Iuinrrra re
<br />§ 1.511.4i;kj2E: roust be conbclled by an occupancy or vacancy sensor providing automatic -off functionality. Lighting inside drawors and cabinets wth
<br />o ue fronds or dccfs roust have controls that turn the light off when the drawer or door is dosed.
<br />mmer5. Lighting in habitable spaces (e.g-, living rooms, dining rooms. b1chms, and bedrooms) must have readily accssstde wall-
<br />§ 150 r3r;k)r"F: rnourdad dimming contrite dual allow the lighting to be manually adjusted up and down. Forward phase art dimmers mi-drdling LED hghd
<br />sources in these spaces moist com ty vidth NEWSSL 7A
<br />§ 150_i3(k j<: Independent controls. Inbigraied lighting col exhaust fans shall be controlled independently from the fans. Lghitrig under cabnets or
<br />sheMes. lightnig in di cat>erWs, and swekited ovtlais must be contr'dled separately from cxdrn rislalle ligtdlTlg.
<br />Residentiial Outdoor UgM ling. For "a -family residential buildings. outdoor bighting permanently nlourite%J 1D a resdenival Luildng. or to
<br />15O g3g;k)3A: other buddings an the same Ict, must have a manual Dii'cM width and ether a olocell ,and matron sensoe or aulDrnabc time sw1c:h
<br />rc.nlroll or an astronomical tare dodo. An energy management control system that provides the specified ied coitld iuncirmal:ty and meals all
<br />a zhcable r_ u rernenis Tiay be used to Meet these requirements.
<br />Internally illuminated address signs. Internally duminated address signs rn,sl ether comply wit•i § 1413.8 cr consume -io more than 5
<br />15Lr-r3g;k;r4. watts ail ptm-_r.
<br />Residential Garages for Eightor More Vehicles. LiOt rgg for residenhal paduag garages for 9ghl cv mcxe vehi,"Jes must c mvply wtlr tie
<br />§ 150.0g;k'v5_ ap; licable regiire,ne•its jar rcmesdentral garages n §51113.9. 130.0.130.1.1VA, 140.16, and 141.4..
<br />Solar Readinesr.-
<br />ingle- amily Residences. Single4armly residences located in subd �l outs -Arth10 or more sngle- ,arndy residences and where the
<br />110_10Qai1:
<br />appl{ olio for a tentat� a si."ivnsron m.Vkx the residainces has been deemed-wri,lele and approved by the enforcement agency.
<br />whorl do not'vane a hUt!VC.Aagc Syslaxm installed, must comply with t`ie re iirame-its Di 110.10ilti Ie).
<br />Minimum Solar Tune Area. 7 he soar zone must have a mnimum bct<al area as descrized be4ow- "he solo- zDne rn rst comply v,rt*i
<br />access, pathway. smoke verddabD i. and spading mquremerts as spec Aed in Tithe 24, Pail 9 or other pails of Title 24 cY in any
<br />irequvemerds adopted by a local jurisdiction- The solar zow total area roust be comprised of areas that have no dimension less titan 5
<br />feet and are no isle than 90 square feel each kw buildings with roof areas less than or equal to 10,000 square feet or no less vian 160
<br />§ 110.1 C Ib)1 A=
<br />square feet each for buldingis with roof areas greater titan 10,D30 square feet. IFor single-famity mWences, tie solar zone must be
<br />tocaled on the roof or Overharing of the buidirx3 and have a total area no less than 250 Square feet. *
<br />110_10: ;2.
<br />Azimuth. All sections of the solar zone located on sleep -sloped worts mist have an azimuth belwvom 90-300* of true norits
<br />Shading. The solar zone must not c5oritain array obsbuchons, including bout riot I m led bo_ vents, chwmey& archtev tural features, and roof
<br />110-101WA:
<br />ne mlad equprnenL
<br />Shading Any ontistudion locaried an the rood or any other part of the building that projects above a solar zone muss be located at Isast t#Ace the
<br />G.i i343:
<br />horizontal distance of the height differerice betweeen the h ghesi pant of the obstruction acid the horizontal prpje ton of the nearest pant od the
<br />solar zone, measured in the vertical plane.'
<br />truct.ur Design Loads on Construction Documents. Fcr areas of the desig-iated as a solo! = e. the structural design loads far
<br />11 CI.11}Iti
<br />roof dead load acid roof live bad must be dearly irdic-ated on the c D istruction docurneds.
<br />Intarir onnecMn Pathways. The construct�,n documents must indicate: a /oration reserved to-, mirarters and melairig eq.vrpme;it acid a
<br />§ 110L101ck
<br />palmy resurrect inn routing of conduit from the solar zone to the point of riterconnedion with the electrical service; and for srigle-fa*
<br />residences and central water-heatirig systems, a pathway resewed for rouling pluriting from the solar zone In the warlm-heafting system.
<br />ocumentatiou. A crpy ru the c:Drislruchon docume-its Dr a c;Drnparafrfe docurrnent indicating the slarmaticiri tram § 1 .1 bXc must be
<br />§ 110.101d):
<br />provided to the cxz ipanl-
<br />110_101e)1:
<br />Main Electrical Service Parmit The main electrical service panel must have a minrnurn bulbar rating of 2W amps.
<br />Main Electrical Service Parcel. The main electrical ser`rrick panel must hm a reserved space lo' allow for the Installation of a double pole
<br />11 Ci_1(fIe 2:
<br />erw t breaker for a tulwe solar electric installation- The reserved mace roust be pemuwndy marked as `For future Solar Electric_ -
<br />Electric and Energy Storage Ready:
<br />5,'6,'22
<br />2022 Single -Family Residential Mandatory Requirements Summary Planning Emd E
<br />NOTE: Single-family residentiaI buildings sub/•ect to the Energy Codes must comply with all applicable mandatory measures, regardless of the ompli ance approach
<br />used. Review the respective section for more information.
<br />(04M)
<br />Building Envelope:
<br />Air Leakage. Manufactured fenestration, exterior doors, and exterior pet doors muss limit air leakage to 0.3 CFM pe, square fool or A r
<br />§ 110.6(a)l: less when tested per NFRC-400, ASTM E283, or AAMAtWDMA/CSA 101/I.S.2/A440-2011. x
<br />§ 110.6(a)5: Labeling. Fenestration products and exterior doors must have a label meeting the requirements of § 10-111(a).F 0 'PE I
<br />Field fabricated exterior doors and fenestration products must use U-factors and solar heat gain coefficient (SH C) values from
<br />§ 110.6(b): Tables 110.E-A, 110.E-B, or JA4.5 for exterior doors. They must be caulked and/or weather- stri pped.
<br />Air Leakage. All joints, penetrations, and other openings in the building envelope that are potential sources of air le 11kage must be
<br />§ 110.7: caulked, gasketed, or weather stripped.
<br />Insulation Certification by Manufacturers. Insulation must be certified by the Department of Consumer Affairs, B reau of Household
<br />§ 110.8(a): Goods and Services BHGS
<br />§ 110.8(g): Insulation Requirements for Heated Slab Floors. Heated slab floors must be insulated per the requirements of § 1OMaStpr I D
<br />Roofing Products Solar Reflectance and Thermal Emittance. The thermal emittance and aged solar reflectance values of the
<br />§ 110.8(1): roofing material must meet the requirements of § 110.8() and be labeled per §10-113 when the installation of a coo rogFi,, e fi is
<br />on the CF1R ��,,JJ l`��
<br />§ 110.60): Radiant Barrier. When required, radiant barriers must have an emiflance of0.05 or less and be certified to the Dep rtment of Consumer
<br />Affairs.
<br />Roof Deck, Ceiling and Rafter Roof Insulation. Roof decks in newly constructed attics in climate zones 4 and 8-16
<br />average U -factor not exceeding U-0.184. Ceiling and rafter roofs mini mu m R-22 i nsulation in wood -frame ceiling- or area -weighted average
<br />§ 150.0(a): U-factor must not exceed 0.043. Rafler roof alterations minimum R-19 or area -weighted average U-factor of 6.054 or less. Attic access
<br />doors must have permanently attached insulation using adhesive or mechanical fasteners. The attic access must be gasketed to
<br />prevent air leakage. Insulation must be installed in direct contact with a roof or ceiling which is sealed to limit infiltration and exfiltrationx
<br />asspecified in§ 110.7 including but not limited to placing insulation either above or below the roof deck or on top of a drywall ceiling.
<br />§ 150.0(b): Loose -fill Insulation. Loose fill insulation must meet the manufacturer's required density for the labeled R-value.
<br />Wall Insulation. Minimum R-13 insulation in 2x4 inch wood framing wall or have a U-factor of0.102 or less, or R 20 in 2x6 inch wood
<br />§ 150.0(c): framing or have a U-factor of0.071 or less. Opaque non -framed assemblies must have an overall assembly U-factor not exceeding 0.102.
<br />Masonry walls must meet Tables 150.1-A or B. x
<br />§ 150.0(d):
<br />Raised -floor Insulation. Minimum R-19 insulation in raised wood framed floor or 0.037 maximum U-factor.'
<br />Slab Edge Insulation. Slab edge insulation must meet all of the following: have a water absorption rate, for the insulation material alone
<br />§ 150.0(fj:
<br />without facings, no greater than 0.3 percent; have a water vapor permeance no greater than 2.0 perm per inch; be protected from
<br />physical damage and UV light deterioration,- and, when installed as part of a heated slab floor, meet the requirements of § 110.8(g).
<br />Vapor Retarder. In climate zones 1 through 16, the earth floor of unvented crawl space must be covered with a Class I or Class II
<br />§ 150.0(g)1:
<br />vapor retarder. This requirement also applies to controlled ventilation crawl space for buildings complying with the exception to
<br />§150.0(d).
<br />Vapor Retarder. In climate zones 14 and 16, a Class I or Class II vapor retarder must be install ed on the conditioned space side of
<br />§ 150.0(g)Z
<br />all insulation in all exterior walls, vented attics, and unvented attics with air -permeable insulation.
<br />Fenestration Products. Fenestration, including skylights, separating conditioned space from unconditioned space or outdoors must have
<br />x
<br />§ 150 0(q)
<br />a maximum U-factor of 0.45, or area -weighted average U-factor of all fenestration must not exceed 0.45.
<br />Firanlaras f)ararativa(iasAnnlianras and Sae I nn-
<br />§ 110.5(e)
<br />Pilot Light. Continuously burning pilot lights are not allowed for indoor and outdoor fireplaces.
<br />§ 150.0(e) I
<br />Closable Doors. Masonry or factory -built fireplaces must have a closable metal or glass door covering the entire opening of the firebox.
<br />§ 150.0(e)Z
<br />Combustion Intake. Masonry or factory -built fireplaces must have a combustion outside air intake, which is at least six square inches in
<br />area and is equipped with a readily accessible, operable, and tight-fittingtight-ftting damper or combustion -air control device.
<br />§ 150.0(e)3:
<br />Flue Damper. Masonry or factory -built fireplaces must have a flue damper with a readily accessible control."
<br />Snare Cnnditinninn liWatPr Haatinn and Plumhinn SVStPm•
<br />Certification. Heating, ventilation, and air conditioning (HVAC) equipment, wafer heaters, showerheads, faucets, and all other
<br />§ 110.0-§ 110.3
<br />regulated appliances must be certified by the manufacturer to the California Energy Commission.
<br />§ 110.2(a):
<br />HVAC Efficiency. Equipment must meet the applicable efficiency requirements in Table 110.2-A through Table 110.2-N_
<br />Controls for Heat Pumps with Supplementary Electric Resistance Heaters. Heat pumps with supplementary electric resistance
<br />§ 110.2(b):
<br />heaters must have controls that prevent supplementary heater operation when the heating load can be met by the heat pump alone;
<br />and in which the cut -on temperature for compression heating is higher than the cut -on temperature for supplementary heating, and
<br />x
<br />the cut-off temperature for compression heating is higher than the cut-off temperature for supplementary heating.
<br />Thermostats. All heating or cooling systems not controlled by a central energy management control system (FMCS) must have a
<br />§ 110.2(c)
<br />setback thermostat. x
<br />Insulation. Unfired service water heater storage tanks and solar water -heating backup tanks must have adequate insulation, or tank
<br />110.3 c 3:
<br />surface heat loss rating.
<br />Isolation Valves. Instantaneous water heaters with an input rating greater than 6.6 kBtu per hour (2 kW) must have isolation valves with
<br />§ 110.3(c)6:
<br />hose bibbs or other fittings on both cold and hot water lines to allowfor flushing the water heater when the valves are closed.
<br />5/6/22
<br />2022 Single -Family Residential Mandatory Requirements Summary
<br />Pilot Lights. Continuously burning pilot lights are prohibited for natural gas: fan -type central furnaces- household cooking appliances
<br />110 5
<br />(except appliances without an electrical supply voltage connection with pilot lights that consume less than 150 Btu per hour) - and pool and
<br />spa heaters.
<br />Building Cooling and Heating Loads. Heating andlor cooling loads are calculated in accordance with the ASHRAE Handbook,
<br />§ 150.00)1:
<br />Equipment Volume, Applications Volume, and Fundamentals Volume; the SMACNA Residential Comfort System Installation
<br />Standards Manual,- or the ACCA Manual J using design conditions specified in § 150.0(h)2.
<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 />Liquid Line Drier. Air conditioners and heat pump systems must be equipped with liquid line filter driers if required, as specified by the
<br />§ 150.0(h)3B:
<br />manufacturer's instructions.
<br />Water Piping, Solar Water -heating System Piping, and Space Conditioning System Line Insulation. All domestic hot water
<br />150.0 011:
<br />i in 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, equipmenf
<br />§ 150 0WZ
<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 theconditioned 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' x2.5' 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 />Nick 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 />§ 110.6(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 ANSIISMACNA 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 />sealed with mastic, tape, or other duct -closure system that meets the applicable UL requirements, or aerosol sealant that meets UL723.
<br />§ 150.0(m)1:
<br />The combination of mastic and either mesh or tape must be used to seal openings greater than'/4 , 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 maycontain ducts,- ducts installed in
<br />these spaces must not becompressed. *
<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 backdrafl or automatic
<br />dampers.
<br />Gravity Ventilation Dampers. Gravity ventilating systems serving conditioned space must have either automatic or readily accessible,
<br />§ 150.0(m)6:
<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)a
<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 innercore and
<br />outer vapor barrier.
<br />Duct System Sealing and Leakage Test. When space conditioning systems use forked 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 N1ERV 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
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