MAXIDRY MAXI200, Installation Manual, Page: 35 / 78

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D. EXHAUST REQUIREMENTS
NOTE: For 1 door dryers, the 20-inch (50.8 cm) diameter exhaust duct exits from the rear of the base.
For 2 door dryers, the 20-inch (50.8 cm) diameter exhaust duct exits from the left side of the
base.
1. General Exhaust Ductwork Information
Exhaust ductwork
should be
designed and installed by a qualified professional. Improperly sized ductwork will
create excessive back pressure, which results in slow drying, increased use of energy, overheating of the dryer,
and shutdown of the burner by the airflow (sail) switches, burner hi-limits, or tumbler hi-limit thermostats. The
dryer
must be installed with a proper exhaust duct connection to the outside.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCTWORK CAN
CREATE A POTENTIAL FIRE HAZARD
.
NOTE: THE DRYER MUST BE INDEPENDENTLY EXHAUSTED. COMMON DUCTWORK
IS NOT ACCEPTABLE
.
The exhaust ductwork
should be
laid out in such a way that the ductwork travels as directly as possible to the
outdoors with as few turns as possible. Single or independent dryer venting is recommended.
The shape of the ductwork is not critical so long as the minimum cross section area is provided. It is suggested
that the use of 90° turns in ducting be avoided; use 30° and/or 45° angles instead. The radius of the elbow
should
preferably be
1-1/2 times the diameter of the duct.
ALL ductwork should be smooth inside with no projections from sheet metal screws or other obstructions,
which will collect lint. When adding ducts, the ducts to be added should overlap the duct to which it is connected.
ALL
ductwork joints
must be
taped to prevent moisture and lint from escaping into the building. Additionally,
inspection doors
should be
installed at strategic points in the exhaust ductwork for periodic inspection and
cleaning of lint from the ductwork.
IMPORTANT: It is recommended that exhaust booster fans not be used in the exhaust ductwork system.