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Part # MCOSM06 Rev 1 (11/03/08)
A strong exhaust fan will create a vacuum in the room. For an
exhaust system vent to work properly, exhaust and make-up
air must be balanced properly. For proper air balance contact
your local H.V.A.C. contractor.
All gas burners and pilots need sucient air to operate and
large objects should not be placed in rear and bottom of this
oven, which would obstruct the airow through the front.
INSTALLATION OF A DIRECT FLUE.
When the installation of a canopy type exhaust hood is
impossible the oven may be direct vented. Before direct
venting check your local codes on ventilation, in the absence
of local codes, refer to the National Fuel Code NFPA 54, ANSI
Z223.1 (latest revision).
If the unit is to be connected directly to a direct ue, it is
necessary that draft diverter be installed to insure proper
ventilation.
DRAFT DIVERTER
Direct venting as described above, should be positioned
on the main top and fastened with sheet metal screws
provided. All parts described above are available from the
manufacturer.
NOTE: Each oven has been factory tested and adjusted prior
to shipment. It may be necessary to further adjust the oven
as part of a proper installation. Such adjustments are the
responsibility of the installer. Adjustments are not considered
defects in material and workmanship, and they are not
covered under the original equipment warranty.
DO NOT UNDERSIZE VENT PIPE!
This can cause resistance to ow and impede good venting.
We suggest that if a horizontal run must be used it should
rise no less than 1/4" (6.25mm) for each linear foot of run, and
after a total of 180° of bends you should increase the size of
stove pipe by two (2") inches. The ue should rise 2' (60cm) to
3' (90cm) above the roof line or 2' (60cm) to 3' (90cm) above
any portion of a building within a horizontal distance of 10 (3
meters) feet.
The following diagram is only one example from the National
Fuel Gas Code Book NFPA 54, ANSI Z223.1, 7.5.3: