Cumberland Stove Works MF3700 - Manual (Page 14)

INSTALLATION AND OPERATION MANUAL
Models MF3700, MF3800
Page 14 800-345-6007 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 a partition of
combustible construction is desired, the installation
shall conform to Can/CSa-8365.
TYPE OF VENT
Pellet venting pipe (also known as L vent) is constructed
of two layers with air space between the layers. This air
space acts as an insulator and reduces the outside surface
temperature of pipe.
A UL-listed three- or four-inch (3” or 4”) type L pellet vent
exhaust system must be used for installation and attached
to the pipe connector provided on the back of the stove.
Use a 3” to 4” adapter for 4” pipe. A cap must be used
at the termination of type L vent chimneys. At elevations
greater than 2,500 feet above sea level, a four-inch (4”) L
is required.
PELLET VENT INSTALLATION
Vent termination MUST exhaust above air inlet elevation.
It is recommended to install at least three feet (3’) of vertical
pellet vent pipe. This will create a natural draft to prevent
the possibility of smoke or odor during appliance shutdown
and will keep exhaust from causing a nuisance or hazard
from exposure to high temperatures.
The installation must include a cleanout tee to enable
collection of fly ash and to permit periodic cleaning of the
exhaust system.
The total length of the horizontal vent must not exceed 10
feet. The maximum recommended vertical venting height is
18 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.
The area where the vent pipe goes through to the exterior
of the home must be sealed with silicone or other means
to maintain the vapor barrier between the exterior and the
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.
THE PELLET VENT MUST MAINTAIN MINIMUM
CLEARANCES SPECIFIED BY VENT MANUFACTURER
FOR CLEARANCE TO ANY COMBUSTIBLES.
INSTALL VENT AT CLEARANCES SPECIFIED BY THE
VENT MANUFACTURER.
WITH ALL VENTING, WHETHER VERTICAL OR
HORIZONTAL, JOINTS SHOULD BE MADE GAS-TIGHT
WITH RECOMMENDED SEALANTS.