A.O. Smith 197835-001 Water Heater User Manual


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Forallsidewallterminated,horizontallyventedpowervent,directvent,andpowerdirectventgasfueledwaterheaters
installedineverydwelling,buildingorstructureusedinwholeorinpartforresidentialpurposes,includingthoseowned
oroperatedbytheCommonwealthandwherethesidewallexhaustventterminationislessthanseven(7)feetabove
finishedgradeintheareaoftheventing,includingbutnotlimitedtodecksandporches,thefollowingrequirements
shall be satisfied:
INSTALLATION OF CARBON MONOXIDE DETECTORSAtthetimeofinstallationofthesidewallhorizontalventedgasfueled
equipment,theinstallingplumberorgasttershallobservethatahardwiredcarbonmonoxidedetectorwithanalarmandbatteryback-up
isinstalledontheoorlevelwherethegasequipmentistobeinstalled.Inaddition,theinstallingplumberorgasttershallobservethat
abatteryoperatedorhardwiredcarbonmonoxidedetectorwithanalarmisinstalledoneachadditionallevelofthedwelling,building
orstructureservedbythesidewallhorizontalventedgasfueledequipment.Itshallbetheresponsibilityofthepropertyownertosecure
theservicesofqualiedlicensedprofessionalsfortheinstallationofhardwiredcarbonmonoxidedetectors.
Intheeventthatthesidewallhorizontallyventedgasfueledequipmentisinstalledinacrawlspaceoranattic,thehard
wiredcarbonmonoxidedetectorwithalarmandbatteryback-upmaybeinstalledonthenextadjacentoorlevel.
Intheeventthattherequirementsofthissubdivisioncannotbemetatthetimeofcompletionofinstallation,theownershall
haveaperiodofthirty(30)daystocomplywiththeaboverequirementsprovidedthatduringsaidthirty(30)dayperiod,a
batteryoperatedcarbonmonoxidedetectorwithanalarmshallbeinstalled.
APPROVED CARBON MONOXIDE DETECTORSEachcarbonmonoxidedetectorasrequiredinaccordancewiththe
aboveprovisionsshallcomplywithNFPA720andbeANSI/UL2034listedandCSAcertied.
SIGNAGE Ametalorplasticidenticationplateshallbepermanentlymountedtotheexteriorofthebuildingataminimum
heightofeight(8)feetabovegradedirectlyinlinewiththeexhaustventterminalforthehorizontallyventedgasfueled
heatingapplianceorequipment.Thesignshallread,inprintsizenolessthanone-half(1/2)inchinsize,“GAS VENT
DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.”
INSPECTION Thestateorlocalgasinspectorofthesidewallhorizontallyventedgasfueledequipmentshallnotapprovethe
installationunless,uponinspection,theinspectorobservescarbonmonoxidedetectorsandsignageinstalledinaccordance
withtheprovisionsof248CMR5.08(2)(a)1through4.
EXEMPTIONS:Thefollowingequipmentisexemptfrom248CMR5.08(2)(a)1through4:
1.TheequipmentlistedinChapter10entitled“EquipmentNotRequiredToBeVented”inthemostcurrenteditionofNFPA
54asadoptedbytheBoard;and
2.ProductApprovedsidewallhorizontallyventedgasfueledequipmentinstalledinaroomorstructureseparatefromthe
dwelling,building,orstructureusedinwholeorinpartforresidentialpurposes.
MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDEDWhenthemanufacturerofProduct
Approvedsidewallhorizontallyventedgasequipmentprovidesaventingsystemdesignorventingsystemcomponentswiththe
equipment,theinstructionsprovidedbythemanufacturerforinstallationoftheequipmentandtheventingsystemshallinclude:
1.Detailedinstructionsfortheinstallationoftheventingsystemdesignortheventingsystemcomponents;and
2.Acompletepartslistfortheventingsystemdesignorventingsystem.
MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDEDWhenthemanufacturer
ofaProductApprovedsidewallhorizontallyventedgasfueledequipmentdoesnotprovidethepartsforventingtheflue
gases,butidentifies“specialventingsystems,”thefollowingrequirementsshallbesatisfiedbythemanufacturer:
1.Thereferenced“specialventingsystem”instructionsshallbeincludedwiththeapplianceorequipmentinstallationinstructions;and
2.The“specialventingsystems”shallbeProductApprovedbytheBoard,andtheinstructionsforthatsystemshallinclude
apartslistanddetailedinstallationinstructions.
AcopyofallinstallationinstructionsforallProductApprovedsidewallhorizontallyventedgasfueledequipment,allventing
instructions,allpartslistsforventinginstructions,and/orallventingdesigninstructionsshallremainwiththeapplianceor
equipmentatthecompletionoftheinstallation.
INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
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