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Appendix A: Special Requirements For Side-Wall Vented AppliancesIn The Commonwealth of Massachusetts

ImPOrTaNT

TheCommonwealthofMassachusettsrequirescompliancewithregulation248CMR4.00and5.00for
installationofside-wallventedgasappliancesasfollows:
1. Fordirect-ventappliances,mechanical-ventheatingappliancesordomestichotwaterequipment,where
 thebottomoftheventterminalandtheairintakeisinstalledbelowfourfeetabovegradethefollowing 
 requirementsmustbesatised:
a. Ifthereisnotalreadyonepresent,oneachoorlevelwheretherearebedroom(s),acarbon
  monoxidedetectorandalarmshallbeplacedinthelivingareaoutsidethebedroom(s).Thecarbon
  monoxidedetectorshallcomplywithNFPA720(2005Edition).
b. Acarbonmonoxidedetectorshallbelocatedintheroomthathousestheapplianceorequipment
  andshall:
  i. Bepoweredbythesameelectricalcircuitastheapplianceorequipmentsuchthatonlyone
   serviceswitchservicesboththeapplianceandthecarbonmonoxidedetector;
  ii. Havebatteryback-uppower;
  iii. MeetANSI/UL2034StandardsandcomplywithNFPA720(2005Edition);and
  iv. HavebeenapprovedandlistedbyaNationallyRecognizedTestingLaboratoryasrecognized 
   under527CMR.
 c. Aproduct-approvedventterminalmustbeused,andifapplicable,aproduct-approvedairintake  
  mustbeused.Installationshallbeinstrictcompliancewiththemanufacturer’sinstructions.Acopy
  oftheinstallationinstructionsshallremainwiththeapplianceorequipmentatthecompletionofthe
  installation.
 d. Ametalorplasticidenticationplateshallbemountedattheexteriorofthebuilding,fourfeet  
  directlyabovethelocationoftheventterminal.Theplateshallbeofsufcientsizetobeeasilyread
  fromadistanceofeightfeetaway,andread“GasVentDirectlyBelow”.
2. Fordirect-ventappliances,mechanical-ventheatingappliancesordomestichotwaterequipment,where
 thebottomoftheventterminalandtheairintakeisinstalledabovefourfeetabovegradethefollowing 
 requirementsmustbesatised:
a. Ifthereisnotalreadyonepresent,oneachoorlevelwheretherearebedroom(s),acarbon
  monoxidedetectorandalarmshallbeplacedinthelivingareaoutsidethebedroom(s).Thecarbon
  monoxidedetectorshallcomplywithNFPA720(2005Edition).
b. Acarbonmonoxidedetectorshall:
  i. Belocatedintheroomthathousestheapplianceorequipment
  ii. Beeitherhard-wiredorbatterypoweredorboth;and
  iii. ComplywithNFPA720(2005Edition)
 c. Aproduct-approvedventterminalmustbeused,andifapplicable,aproduct-approvedairintake  
  mustbeused.Installationshallbeinstrictcompliancewiththemanufacturer’sinstructions.Acopy
  oftheinstallationinstructionsshallremainwiththeapplianceorequipmentatthecompletionofthe
  installation.