American Dryer Corp. MDG-120PVV - Manual (Page 19)

113395 - 6 Maytag Co. 17
1. Single Dryer Venting
IMPORTANT: For extended ductwork runs, the cross-sectional area of the ductwork can only be
increased to an extent. When the ductwork approaches the maximum limits as noted
in this manual, a professional heating, ventilating, and air-conditioning (HVAC) firm
should be consulted for proper venting information.
2. Horizontal Venting
When horizontal dryer venting is used, the length of the ductwork from the dryer to the outside exhaust
outlet, must not exceed 20 feet (6.10 meters). The minimum diameter of this ductwork must be at least
14-inches (35.56 cm) for MDG-120, 18-inches (45.72 cm) for MDG-170, and 20-inches (50.8 cm) for
MDS-170. Including tumbler/dryer elbow connections or elbows used for outside protection from the
weather, no more than 1 elbow should be used in the exhaust duct run. If more than 1 elbow is used, the
cross-sectional area of the ductwork must be increased.
3. Vertical Venting
When vertical dryer venting is used, the length of the ductwork from the dryer to the outside exhaust outlet,
must not exceed 15 feet (38.1 meters). The minimum diameter of this ductwork must be at least
14-inches (35.56 cm) for MDG-120, 18-inches (45.72 cm) for MDG-170, and 20-inches (50.8 cm) for
MDS-170. Including tumbler/dryer elbow connections or elbows used for outside protection from the
weather, no more than 3 elbows should be used in the exhaust duct run. If more than 3 elbows are used,
the cross-sectional area of the ductwork must be increased.
A = 20 feet (6.10 meters)
B = MDG-120: 14-inches (35.56 cm)
MDG-170: 18-inches (45.72 cm)
MDS-170: 20-inches (50.8 cm)
C = 15 feet (38.1 meters)
D = MDG-120: 14-inches (35.56 cm)
MDG-170: 18-inches (45.72 cm)
MDS-170: 20-inches (50.8 cm)
NOTE 1 Opening from combustible materials must be 2-inches (5.08 cm) larger than the
duct (all the way around). The duct must be centered within this opening.
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest obstruction.