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INSTALLATION AND OPERATION MANUAL
MF3700, MF3800 Models
Page 13800-345-6007
CumberlandStoveWorks.com
VENTING
Consult vent manufacturer’s specifications and
recommendations for all venting installations.
The following installation guidelines must be followed to
ensure conformity with both the safety listing of this stove
and to local building codes.
NOTE: Where passage through a wall, or partition of
combustible construction is desired, the installation
shall conform to CAN/CSA -8365.
TYPE OF VENT
Pelletventingpipe(alsoknownasLvent)isconstructed
of two layers with air space between the layers. This air
space acts as an insulator and reduces outside surface
temperature of pipe to allow a clearance to combustibles.
AULlisted3”or4”typeLpelletventexhaustsystemmust
be used for installation and attached to the pipe connector
providedonthebackofthestove.Usea3”to4”adapter
for4”pipe.Acapmustbeusedattheterminationoftype
L vent chimneys. For elevations above 2,500 feet above
sealevel,a4”Lisrequired.
PELLET VENT INSTALLATION
Termination MUSTexhaustaboveairinletelevation.
It is recommended to install at least 3’ of vertical pellet
vent pipe. This will create some natural draft to prevent the
possibility of smoke or odor during appliance shutdown and
tokeepexhaustfromcausinganuisanceorhazardfrom
exposingpeopleorshrubstohightemperatures.
The installation must include a clean out tee to enable
collectionofyashandtopermitperiodiccleaningofthe
exhaustsystem.
Totallengthofhorizontalventmustnotexceed10feet.
Themaximumrecommendedverticalventingheightis18
feet. All joints for pellet vent are required to be fastened
with at least three screws and all pellet vent connections
must be sealed according to the vent manufacturer’s
recommendations.
Theareawheretheventpipegoesthroughtotheexterior
of the home must be sealed with silicone or other means
tomaintainthevaporbarrierbetweentheexteriorandthe
interior of the home.
WARNING
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE
SERVING ANOTHER APPLIANCE.
DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST
VENTING SYSTEM OF THIS UNIT.
DO NOT CONNECT DIRECTLY TO A MASONRY
CHIMNEY.
DO NOT TERMINATE VENT IN ANY ENCLOSED OR SEMI-
ENCLOSED AREA, SUCH AS; CARPORTS, GARAGE,
ATTIC, CRAWL SPACE, UNDER A SUN DECK OR PORCH,
NARROW WALKWAY OR CLOSED AREA, OR ANY
LOCATION THAT CAN BUILD UP A CONCENTRATION
OF FUMES SUCH AS A STAIRWELL, COVERED
BREEZEWAY ETC.
CAUTION
VENT SURFACES CAN GET HOT ENOUGH TO CAUSE
BURNS IF TOUCHED. NONCOMBUSTIBLE SHIELDING
OR GUARDS MAY BE REQUIRED.
PELLET VENT MUST MAINTAIN MINIMUM CLEARANCES
SPECIFIED BY VENT MANUFACTURER FOR CLEARANCE
TO ANY COMBUSTIBLES.
INSTALL VENT AT CLEARANCES SPECIFIED BY THE
VENT MANUFACTURER.
ALL VENTING, WHETHER VERTICAL OR HORIZONTAL,
JOINTS SHOULD BE MADE GAS-TIGHT WITH
RECOMMENDED SEALANTS.