
Piping"
~
FOREWORD
ThisdesigncompileswithANSZ21.10.3asalowinthediagramsasthesearenecessaryforcheck-
pressureboiler.ingtheoperationoftheboiler.
4
.MAKESUREthegasonwhichtheboilerwill
Detailedinstallationdiagramsareinthismanual.operateisthesameasthatspecifiedontheboiler
Thesediagramswillserve'toprovidetheinstallerModelandRatingPlate.
withareferenceforthematerialsandmethodof
pipingsuggested.ItishighlyessentialthatallNOTE:Itisrecommendedthattheinstructions
waterandgaspiping,andtheelectricalwiring,asoutlinedinthelatestpublicationof
beinstalledandconnectedasshownintheANSbookletZ21.30"InstallationofGas
diagrams.AppliancesandGasPiping"alsobefol-
lowed.ThisManualcanbepurchased
CheckthediagramsthoroughlybeforestartingfromtheAmericanGasAssociationLab-
installationtoavoidpossibleerrorsandtomini-'oratories,8501E.PleasantValleyRd.,
mizetimeandmaterialscost.Cleveland,Ohio44131.
Particularattentionshouldbegiventotheinstal-Unlessotherwisestated,theseinstructionsshall
lationofthermometersatthelocationsindicatedapplytoallresidentialtypeboilers.
I
INSTALLATIONINSTRUCTIONS
LOCATION
When'installingtheboiler,considerationmustIftheunconfinedspaceiswithinabuildingofun-
begiventoproperlocation.Locationselectedusuallytightconstruction,airforcombustion,
shouldbeasclosetothestackorchimneyasventilationanddrafthooddilutionshallbeob-
practicable,andascentralizedwiththepipingtainedfromoutdoorsorfromspacesfreelycom-
systemaspossible.municatingwiththeoutdoors.Permanentopen-
ing(s)havingatotalfreeareaofnotlessthanone
Theboilershouldalsobelocatednearafloorsquareinchper5,000Btuhtotalinputshallbe
draintodisposeofwaterandinanareawhereitprovided.
willnotbesubjecttofreezingtemperatures.
AIRREQUIREMENTSConfinedSpace
Anamplesupplyofairmustbeprovidedforproper
combustion.AninsufficientsupplyofairwillALLAIRFROMINSIDEBUILDING
resultinayellow,luminousburnerflame,causing
carboningorsootingofthefinnedheatexchangerTheconfinedspaceshallbeprovidedwithtwo
andburner,andpossibledamagetotheboiler,permanentopenings,onenearthetopoftheen-
closureandonenearthebottom.Eachopening
ChemicalVaporsIshallhaveafreeareaofnotlessthanonesquare
inchper1,000·Btuhofthetotalinputratingofall
Whendestructiveorcorrosivechemicalvaporsappliancesintheenclosure,freelycommunicating
(suchasdrycleaningfluids,pressurecanpropel-withinteriorareashavinginturnadequateinfil-
lents,refrigerants,chlorine,bleachingcompounds,trationfromtheoutside.
flammables,etc.)maybepresent,eveninminute
quantitiesinthecombustionairsupplyprovisionsALLAIRFROMOUTDOORS
shouldbemadetotakeallair(100%)forcombus-
tionanddrafthooddilutionfromoutsideofbuild-Theconfinedspaceshallbeprovidedwithtwo
ingandatapointremotefromthedischargeofpermanentopenings,oneinornearthetopofthe
drycleaningequipmentand/orbuildingexhaustenclosureandoneinornearthebotto'm.When
systems,directlycornmunicatingwithoutdoorsorbymeans
ofverticalducts,eachopeningshallhaveafree
UnconfinedSpaceareaofnotlessthanonesquareinchper4,000
BtuhoftotalInputratingofal.Iappliancesinthe
Inbuildingsofconventionalframe,brickorstoneenclosure.Ifhorizontalductsareusedeach
construction,unconfinedspacesnormallyprovideopeningshallhaveafreeareaofnotlessthan
adequateairforcombustion,ventilationanddraftonesquareinchper2,000Btuboftotalinputof
hooddilution.allappliancesintheenclosure.
4AOS104
Roeabeek
FILED: NEW YORK COUNTY CLERK 02/20/2018 10:20 AM INDEX NO. 190311/2015
NYSCEF DOC. NO. 337 RECEIVED NYSCEF: 02/20/2018