Specifications

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GAS SUPPLY
Allgaspipingmustbeinstalledincompliancewithlocalcodesand
utility regulations. In the absence of local codes the installation
mustcomplywithNFCGNFPA54/ANSIZ223.1.
Note: Never use plastic pipe. Check to conrm whether your
localcodesallowcoppertubingorgalvanized.
Wherepermitted,exiblegasconnectorsmustbecertiedtothe
followingstandards:
— ANSZ21.24ApplianceConnectorsofCorrugatedMetalTub-
ingandFittings
— ANS Z21.45 Assembled Flexible Appliance Connectors of
Other Than All-Metal Construction
Theaboveconnectorsmaybeusedifacceptablebytheauthor-
ityhavingjurisdiction.ThestateofMassachusettsrequiresthata
exibleapplianceconnectorcannotexceedthreefeetinlength.
Adriplegshouldbeinstalledintheverticalgassupplypiperunto
the unit.
Manual Shut-off Valve
Somelocalregulationsrequiretheinstallationofamanualshut-off
valveandgroundjointunionexternaltothereplace.Theshutoff
shouldbeaccessibleforserviceand/oremergencyuse.Consultthe
localutilityorgassupplierforadditionalrequirementsregardingthe
placement of the manual shut off valve. Compounds used on
threadedjointsofgaspipingshallberesistanttotheactionofliq-
ueedpetroleumgases.
Leak Testing
WARNING - FIRE OR EXPLOSION HAZARD
Never test for leaks with an open ame. Check all
connections using a commercially available soap so-
lution. A re or explosion may result causing prop-
erty damage, personal injury or loss of life. Failure
to follow the safety warnings exactly could result in
serious injury, death or property damage.
Aftergaspipingtothereplaceiscomplete,allconnectionsmust
betestedforgasleaks.Thisincludespipeconnectionsatthemain
gasvalve,emergencyshutoffvalveandexiblegasconnectors(if
applicable).Thesoapandwatersolutioncanbeappliedoneach
jointorunionusingasmallpaintbrush.Ifanybubblingisobserved,
theconnectionisnotsealedadequatelyandmustberetightened.
Repeatthetighteningandsoapcheckprocessuntilthebubbling
ceases.
Important Note:
When pressure testing the gas supply lines at pressures
greater than ½ psig (14 in. w.c.), the gas supply piping system
must be disconnected from the replace to prevent damage
to the gas control valve. If the test pressure is less than or
equal to ½ psig (14 in. w.c.), close the manual shut-off valve.
Pressure Testing of the Gas Supply System
1. Tochecktheinletpressuretothegasvalve,a1/8inchN.P.T.
pluggedtapping,accessiblefortestgaugeconnection,must
beplacedimmediatelyupstreamofthegassupplyconnection
tothereplace.
2. Thereplaceanditsindividualshutoffvalvemustbediscon-
nected from the gas supply piping system during anypres-
suretestingofthatsystemattestpressuresinexcessof1/2
psig.
3. Thereplacemustbeisolatedfromthegassupplypipingsys-
tembyclosingitsindividualmanualshutoffvalveduringany
pressuretestingofthegassupplypipingsystemattestpres-
suresequaltoorlessthan1/2psig.
Recommended Gas Pipe Diameter
PipeLength Schedule40Pipe
InsideDiameter
In Inches
Tubing,TypeL
OutsideDiameter
In Inches
Nat. L.P. Nat. L.P.
0-10 feet 1/2 3/8 1/2 3/8
10-40 feet 1/2 1/2 5/8 1/2
40-100 feet 1/2 1/2 3/4 1/2
100-150 feet 3/4 1/2 7/8 3/4