Installation guide

5
COMBUSTIONAIR&VENTING
REQUIREMENTS
WARNING:
CARBON MONOXIDE POISONING HAZARD
Failuretofollowthestepsoutlinedbelowfor
eachapplianceconnectedtotheventingsystem
being placed into operation could result in
carbonmonoxidepoisoningordeath.
Thefollowingstepsshallbefollowedwitheach
individualapplianceconnectedtotheventing
systembeingplacedinoperation,whileallother
appliancesconnectedtotheventingsystemare
not in operation:
1.Seal any unused openings in the venting
system.
2.Inspecttheventingsystemforpropersizeand
horizontalpitch,asrequiredintheNationalFuel
GasCode,ANSIZ223.1/NFPA54ortheCSA
B149.1,NaturalGasandPropaneInstallation
Codesandtheseinstructions.Determinethat
there is no blockage or restriction, leakage,
corrosionandotherdeciencieswhichcould
causeanunsafecondition.
3.Asfaraspractical,closeallbuildingdoors
andwindowsandalldoorsbetweenthespace
in which the appliance(s) connected to the
ventingsystemarelocatedandotherspaces
ofthebuilding.
4.Closereplacedampers.
5.Turn on clothes dryers and any appliance
notconnectedtotheventingsystem.Turnon
anyexhaust fans, suchas range hoodsand
bathroomexhausts,sotheyareoperatingat
maximum speed. Do not operate a summer
exhaustfan.
6.Follow the lighting instructions. Place the
appliance being inspected into operation.
Adjustthethermostatsoapplianceisoperating
continuously.
7.Test for spillage from draft hood equipped
appliances at the draft hood relief opening
after5minutesofmainburneroperation.Use
theameofamatchorcandle.
8.Ifimproperventingisobservedduringanyof
theabovetests,theventingsystemmustbe
correctedinaccordancewiththeNationalFuel
GasCode,ANSIZ223.1/NFPA54and/orCSA
B149.1,NaturalGasandPropaneInstallation
Codes.
9.After it has been determined that each
appliance connected to the venting system
properlyventswhentestedasoutlinedabove,
returndoors,windows,exhaustfans,replace
dampers and any other gas-red burning
appliancetotheirpreviousconditionsofuse.
Table1.MinimumClearanceRequirements
INSTALLATION CLEARANCES
CLOSET ALCOVE
Front* 6" 18"
Rear 0" 0"
Sides 0" 0"
Top 17" 17"
Ductw/in3ftoffurnace 1/4" 1/4"
Vent 6” 6”
Plenum 1" 1"
RoofJackBarrel 0” 0”
LEFT
SIDE
FRONT
RIGHT
SIDE
REAR
VENT
†
NOTES:
* ServiceClearance
AlcoveInstallations-Allow18in.minimumclearancefromfrontof
unittonearestwallorpartitionforservicing.
Closetinstallations-Requireareturnairgrillinstalledinthedooror
apartiallylouvereddooracrosstheopeningforproperaircirculation.
For clearances 6” or greater, the closet must have an open free
areaof235in
2
minimum.Forspecialclearancesbetween1”-5”,
requirementsarealouvereddoorwithaminimumof250in
2
(1613
cm
2
)freearea.Afullylouveredclosetdoorisstronglyrecommended
forbothinstallationtypes.
MinimumInstallationClearances
• Access for positioning and servicing the unit must be
considered when locating unit. The need to provide
clearance for access to panels or doors may require
clearancedistancesoverandabovetherequirements.
• This appliance must be installed in accordance with
clearances listed in Table 1. The furnace must be
installedwithampleclearanceforeasyaccesstotheair
lter, blower assembly, burner assembly, controls, and
ventconnections.
• Locate and install this unit in position as specied on
page 8 & page 9. This unit is designed only for Indoor
installationsandshouldbelocatedwithconsiderationof
minimizingthelengthofthesupplyandreturnducts.
• Sufcient clearance for unobstructed airow through a
louvered door must be maintained in order to achieve
ratedperformance.Airreturnto the furnace must have
the minimum required total free area of 200 in
2
 (1290
cm
2
)Mayalsoincludereturnairgrilleandframeassembly
(P/N902989)orwallmountgrille(P/N902999).