Nordyne CMF95 Series Installation Instructions

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wallrequirea6”clearancefromthewalltothefurnace
sothattheairmayenterthefrontgrilleofthefurnace.
Inaddition,allreturnairsystems,includingtheoorand
ceilingsystems,mustmeetthefollowingconditions:
• Thereturnairopening,regardlessofitslocationinthe
closet,mustnotbesmallerthansizespeciedonunit
datalabel.Iflocatedintheoor,theopeningmustbe
providedwith a means of preventing its inadvertent
closurebyatobject(s)placedovertheopening.
• Thereturn-airopeningintothecloset,regardlessofits
location,musthaveanopenfreeareaof200in
2
(1290
cm
2
)minimum.
• Thecross-sectionalareaofthereturnductsystem(in
oororceiling)leadingintotheclosetmustnotbeless
than200in
2
(1290cm
2
).
• Thetotalfreeareaoftheopeningsintheoororthe
ceilingregistersservingthereturnairductsystemmust
notbenotlessthan300in
2
(1935cm
2
).
• Materialslocatedinthereturnductsystemshallhave
aamespreadclassicationof200orless.
• Noncombustiblepanshavingoneinchupturnedanges
are located beneath openings in a oor return duct
system.
• Hollow spaces used as ducts or plenums for
environmentalairmaycontainmineral-insulatedmetal
sheathedcable,aluminumsheathedcable,electrical
metallic tubing, rigid metal conduit, exible metal
conduit(nottoexceed4ft),ormetal-cladcables.Wiring
materials,xtures,aretobesuitablefortheexpected
ambienttemperaturestowhichtheywillbesubjected.
• Thenegativepressureintheclosetmustnotbeless
thanminus0.05incheswatercolumnwiththecloset
door closed and the fan operating at high speed.A
readingbelowminus0.05”indicatesadirtylterora
restrictedreturnairsystem.
• For oor return systems, the manufactured housing
manufacturer or installer shall afx a prominent
marking on or near the appliance where it is easily
readwhentheclosetdoorisopen.Themarkingshall
read:“CAUTION,HAZARDOFASPHYXIATION.DO
NOTCOVERORRESTRICTFLOORRETURNAIR
OPENING.”orequivalent.
• Forclosetinstallationwithlessthan6”frontclearance,
butnot less than 1”, a louvereddoor must be used
havingaminimum200in
2
(1290cm
2
)freeareaopening
directlyinlinewithopeningsinthefurnacedoor.Afully
louvereddoorhavingtheminimumfreeareaisalso
permittedifthefronttoleranceisnotlessthan4”.
Furnace Filter
WARNING:
Neveroperate the furnace without a lter in
place.Accumulatingdustinthereturnaircan
build up on internal components, resulting
inlossofefciency,equipmentdamage,and
possiblere.
• CMF95furnaces aresuppliedwithasingleairlter
whenshippedfromthefactory.Accessingthelterdoes
notrequiretoolsandcanbeeasilyremovedfromthe
insideoftheaccessdoor.Thelterissecuredtothe
doorwitharetainingbracket.Itisrecommendedthat
thelterbecleanedorreplacedmonthly.Newlybuiltor
recentlyrenovatedhomesmayrequiremorefrequent
changinguntiltheconstructiondusthasminimized.
• Replacementltersareavailableatmostlocalretailers.
Inspectltersfrequentlyandreplacewhennecessary
withlterofsamedimensionalsize.Filtersdesignedto
removesmallerparticlessuchaspollen,mayrequire
additionalmaintenance.
Acoustical Treatments
Damping ducts, exible vibration isolators, or pleated
media-styleltersonthereturnairinletof thefurnace
maybeusedtoreducethetransmissionofequipment
noiseeminatingfromthefurnace.Thesetreatmentscan
produceaquieterinstallation,particularlyintheheated
space.However,theycanincreasethepressuredropin
theductsystem.Caremustbetakentomaintaintheproper
maximumpressureriseacrossthefurnace,temperature
riseandowrate.Thismaymeanincreasingtheductsize
and/orreducingtheblowerspeed.Thesetreatmentsmust
beconstructedandinstalledinaccordancewithNFPAand
SMACNAconstructionstandards.Consultwithlocalcodes
forspecial requirements. Forbestsoundperformance,
install all the needed gaskets and grommets around
penetrationsintothefurnace,suchasforelectricalwiring.

Nordyne CMF95 Series Specifications

General

Brand	Nordyne
Model	CMF95 Series
Category	Furnace
Language	English