Rheem H95 Outdoor Series Use and Care Manual - Page 38

Location, Requirements

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INSTALLATION INSTRUCTIONS Venting VentingforDirect-VentWaterHeater(cont.) The followingchartdetailstheminimaldimensionalinformationneededtodeterminetheproperlocationofthevent terminalfordirectventandoutdoortanklesswaterheaters.Seecorrespondingletterreferenceintheillustrationat left. Location U.S.Installation Requirements1 CanadianInstallation Requirements2 A=Clearanceabovegrade,veranda, porch,deck,orbalcony. 12in.(30cm) 12in.(30cm) B=Clearancetowindowordoorthatmay beopened. •6in.(15cm)forwaterheaterslessthanor equalto10,000Btuh(3kW). •9in.(23cm)forwaterheatersgreaterthan 10,000Btuh(3kW)andlessthanorequalto 50,000Btuh(15kW). •12in.(30cm)forwaterheatersgreaterthan 50,000Btuh(15kW). •6in.(15cm)forwaterheaterslessthanor equalto10,000Btuh(3kW). •12in.(30cm)forwaterheatersgreaterthan 10,000Btuh(3kW)andlessthanorequalto 100,000Btuh(30kW). •36in.(91cm)forwaterheatersgreaterthan 100,000Btuh(30kW). C=Clearancetopermanentlyclosed window. D=Verticalclearancetoventilatedsoffit locatedabovetheterminalwithina horizontaldistanceof2ft.(61cm) fromthecenterlineoftheterminal. E=Clearancetounventilatedsoffit. F=Clearancetooutsidecorner. G=Clearancetoinsidecorner. H=Clearancetoeachsideofcenterline extendedabovemeter/regulator assembly. 3ft.(91cm)withinaheightof15ft.(4,57m) abovethemeter/regulatorassembly. I=Clearancetoserviceregulatorvent outlet. 3ft.(91cm) J=Clearancetononmechanicalairsupply inlettothecombustionairinlettoany buildingorotherappliance. •6in.(15cm)forwaterheaterslessthanor equalto10,000Btuh(3kW). •9in.(23cm)forwaterheatersgreaterthan 10,000Btuh(3kW)andlessthanorequalto 50,000Btuh(15kW). •12in.(30cm)forwaterheatersgreaterthan 50,000Btuh(15kW). •6in.(15cm)forwaterheaterslessthanor equalto10,000Btuh(3kW). •12in.(30cm)forwaterheatersgreaterthan 10,000Btuh(3kW)andlessthanorequalto 100,000Btuh(30kW). •36in.(91cm)forwaterheatersgreaterthan 100,000Btuh(30kW). K=Clearancetomechanicalairsupply inlet. 3ft.(91cm)aboveifwithin10ft.(3m) horizontally. 6ft.(1,83m) L=Clearanceabovepavedsidewalkor paveddrivewaylocatedonpublic property. 7ft.(2,13m)† M=Clearanceunderveranda,porch,deck, orbalcony. 12in.(30cm)‡ 1 InaccordancewithcurrentANSIZ223.1/NFPA54NationalFuelGasCode. 2InaccordancewithcurrentCAN/CSAB149.1InstallationCodes. ForclearancesnotspecifiedinANSIZ223.1/NFPA54orCAN/CSAB149.1,oneofthefollowingshallbeindicated: a) Aminimumclearancevaluedeterminedbytestinginaccordancewithsection2.20,or b) Areferencetothefollowingfootnote:"Clearanceinaccordancewithlocalinstallationcodesandtherequirementsofthegassupplier." †Aventshallnotterminatedirectlyaboveasidewalkorpaveddrivewaythatislocatedbetweentwosingle-familydwellingsandservesboth dwellings. ‡Permittedonlyifveranda,porch,deck,orbalconyisfullyopenonaminimumoftwosidesbeneaththefloor. 38

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38
INSTALLATION INSTRUCTIONS
Venting±for±Direct-Vent±Water±Heater±(cont.)
Location
U.S.±Installation±±
Requirements
1
Canadian±Installation±±
Requirements
2
A±=±Clearance±above±grade,±veranda,±
porch,±deck,±or±balcony.
12±in.±(30±cm)
12±in.±(30±cm)
B±=±Clearance±to±window±or±door±that±may±
be±opened.
•±±
6±in.±(15±cm)±for±water±heaters±less±than±or±
equal±to±10,000±Btuh±(3±kW).
•±±
9±in.±(23±cm)±for±water±heaters±greater±than±
10,000±Btuh±(3±kW)±and±less±than±or±equal±to±
50,000±Btuh±(15±kW).
•±±
12±in.±(30±cm)±for±water±heaters±greater±than±
50,000±Btuh±(15±kW).
•±±
6±in.±(15±cm)±for±water±heaters±less±than±or±
equal±to±10,000±Btuh±(3±kW).
•±±
12±in.±(30±cm)±for±water±heaters±greater±than±
10,000±Btuh±(3±kW)±and±less±than±or±equal±to±
100,000±Btuh±(30±kW).
•±±
36±in.±(91±cm)±for±water±heaters±greater±than±
100,000±Btuh±(30±kW).
C±=±Clearance±to±permanently±closed±
window.
D±=±Vertical±clearance±to±ventilated±soffit±
located±above±the±terminal±within±a±
horizontal±distance±of±2±ft.±(61±cm)±
from±the±centerline±of±the±terminal.
E±=±Clearance±to±unventilated±soffit.
F±=±Clearance±to±outside±corner.
G±=±Clearance±to±inside±corner.
H±=±Clearance±to±each±side±of±centerline±
extended±above±meter/regulator±
assembly.
3±ft.±(91±cm)±within±a±height±of±15±ft.±(4,57±m)±
above±the±meter/regulator±assembly.
I±=±Clearance±to±service±regulator±vent±
outlet.
3±ft.±(91±cm)
J±=±Clearance±to±nonmechanical±air±supply±
inlet±to±the±combustion±air±inlet±to±any±
building±or±other±appliance.
•±±
6±in.±(15±cm)±for±water±heaters±less±than±or±
equal±to±10,000±Btuh±(3±kW).
•±±
9±in.±(23±cm)±for±water±heaters±greater±than±
10,000±Btuh±(3±kW)±and±less±than±or±equal±to±
50,000±Btuh±(15±kW).
•±±
12±in.±(30±cm)±for±water±heaters±greater±than±
50,000±Btuh±(15±kW).
•±±
6±in.±(15±cm)±for±water±heaters±less±than±or±
equal±to±10,000±Btuh±(3±kW).
•±±
12±in.±(30±cm)±for±water±heaters±greater±than±
10,000±Btuh±(3±kW)±and±less±than±or±equal±to±
100,000±Btuh±(30±kW).
•±±
36±in.±(91±cm)±for±water±heaters±greater±than±
100,000±Btuh±(30±kW).
K±=±Clearance±to±mechanical±air±supply±
inlet.
3±ft.±(91±cm)±above±if±within±10±ft.±(3±m)±
horizontally.
6±ft.±(1,83±m)
L±=±Clearance±above±paved±sidewalk±or±
paved±driveway±located±on±public±
property.
7±ft.±(2,13±m)
†
M±=±Clearance±under±veranda,±porch,±deck,±
or±balcony.
12±in.±(30±cm)
‡
1 In±accordance±with±current±ANSI±Z223.1/NFPA±54±National±Fuel±Gas±Code.
2±In±accordance±with±current±CAN/CSA±B149.1±Installation±Codes.
±For±clearances±not±specified±in±ANSI±Z223.1/NFPA±54±or±CAN/CSA±B149.1,±one±of±the±following±shall±be±indicated:
a)± A±minimum±clearance±value±determined±by±testing±in±accordance±with±section±2.20,±or
b)±A±reference±to±the±following±footnote:±“Clearance±in±accordance±with±local±installation±codes±and±the±requirements±of±the±gas±supplier.”
†
±A±vent±shall±not±terminate±directly±above±a±sidewalk±or±paved±driveway±that±is±located±between±two±single-family±dwellings±and±serves±both±
dwellings.
‡±Permitted±only±if±veranda,±porch,±deck,±or±balcony±is±fully±open±on±a±minimum±of±two±sides±beneath±the±floor.
Thefollowing±chart±details±the±minimal±dimensional±information±needed±to±determine±the±proper±location±of±the±vent±
terminal±for±direct±vent±and±outdoor±tankless±water±heaters.±See±corresponding±letter±reference±in±the±illustration±at±
left.
Venting