Nordyne CMF95 Series Installation Instructions

9
• Allminimumclearances(Figure2)mustbemaintained
toprotectbuildingmaterialsfromdegradationbyue
gases.
• For optimal performance, vent the furnace through
awallthatexperiencestheleast exposuretowinter
winds.
• The vent termination shall be located at least 3 ft.
horizontallyfromanyelectricmeter,gasmeter,regulator
andanyreliefequipment.ThesedistancesapplyONLY
to U.S. installations. In Canada, CSA B149.1 takes
precedenceovertheseinstructions.
• Donotinstalltheventterminalsuchthatexhaustis
directed into window wells, stairwells, under decks
orintoalcovesorsimilarrecessedareas,anddonot
terminateaboveanypublicwalkways.
• Ifventinghorizontally,sidewallventkitsareavailable
accordingtothepipediametersizeoftheinstallation.
For3inchpipeusekit#904347.Faceplatekit#902375
isalsoavailablefor3inchhorizontalventing.Please
followtheinstructionsprovidedwiththekits.
• Concentricventterminationkitsareavailableforuse
withthesefurnaces.For3inchpipeusekit#904953.
Pleasefollowtheinstructionsprovidedwiththekit.
• Whentheventpipemustexitanexteriorwallcloseto
thegradeorexpectedsnowlevelwhereitisnotpossible
toobtainclearancesshowninFigure1,arisermaybe
providedasshowninFigure3.Insulationisrequired
topreventfreezingofthissectionofpipe.SeeTable3
(page10)forventfreezingprotection.
OutdoorTerminations-VerticalVenting
Terminationspacingrequirementsfromtheroofandfrom
eachotherareshowninFigure4.Theroofpenetration
mustbeproperlyashedandwaterproofedwithaplumbing
roofbootorequivalentashing.Ventandcombustionair
pipingmaybeinstalledinanexistingchimneywhichis
notinuseprovidedthat:
• Boththeexhaustventandairintakerunthelengthof
thechimney.
• Thetopofthechimneyissealedandweatherproofed.
• The termination clearances shown in Figure 4 are
maintained.
• Noothergasredorfuel-burningequipmentisvented
throughthechimney.
12” min. to maximum
expected snow level
(both pipes)
90° Elbow
Exhaust vent
option B
Exhaust vent
option A
Mounting kit faceplate
secured to wall with screws
(both pipes)
Combustion
air inlet
Exhaust vent
option C
18” Min.
36” Max.
8” Min.
36” Max.
(all positions)
Figure1.Inlet&ExhaustPipeClearances
Note 2
Mechanical draft
vent terminal
Direct vent
terminal
50,000 Btuh
or less
Forced air inlet
Direct vent
terminal - more
than 50,000 Btuh
Mechanical
draft vent
terminal
Mechanical
draft vent
terminal
Less
than
10 ft.
3 ft.
NOTES:
1. All dimensions shown are
minimum requirements.
2. Exterior vent terminations must
be located at least 12” above the
maximum expected snow level.
Note 2
4 ft
4 ft
12 in.
12 in.
9 in.
Note 2
Figure 2. Vent Locations
Support
NOTE: Vent Configuration to Provide
12" Minimum height above Snow Level.
1/2"
Armaflex
Insulation or
Equivalent
(if required)
12" Above
Maximum
Expected
Snow Level
19" Max.
(See Note)
Outside
Wall
Figure 3. Alternate Horizontal Vent Installation
Figure4.VerticalVentTermination
Combustion Air
Exhaust Vent
12” Above Maximum
Expected Snow Level
(Both pipes)
Elbows on the combustion air
inlet must be positioned pointing
away from the exhaust vent.
8" Min.
36" Max.
Plumbing Vent Roof Boot
(Both Pipes)

Nordyne CMF95 Series Specifications

General

Brand	Nordyne
Model	CMF95 Series
Category	Furnace
Language	English