Important
! Exhaust back pressure measured by a manometer/magnehelic in the exhaust duct must
be no less than 0 and must not exceed 0.6 in WC (1.48 mb).
Note
!When the exhaust ductwork passes through a wall, ceiling, or roof made of combustible materials, the
opening must be
As per the National Fuel Gas Code, “Exhaust ducts for type 2 clothes dryers shall be constructed of sheet metal or other noncombustible material. Such ducts shall be equivalent in strength and corrosion resistance to ducts made of galvanized sheet steel not less than 26 gauge
The ductwork for this appliance must be suitable for the appliance category in accordance with national installation regulations of the country of destination.
Outside Ductwork Protection
To protect the outside end of the horizontal ductwork from the weather, a 90° elbow bent downward should be installed where the exhaust exits the building. If the ductwork travels vertically up through the roof, it should be protected from the weather by using a 180° turn to point the opening downward. In either case, allow at least twice the diameter of the duct between the duct opening and the nearest obstruction (refer to the diagram).
Important
!Do not use screens, louvers, or caps on the outside opening of the exhaust ductwork.
Single Dryer Venting
Important
!For extended ductwork runs, the
extent. When the ductwork approaches the maximum limits as noted in this manual, a professional HVAC firm should be consulted for proper venting information.
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
Vertical Venting
When vertical dryer venting is used, the length of the ductwork from the dryer to the outside exhaust outlet, must not exceed 12 feet (3.66 meters). The minimum diameter of this ductwork must be at least
A | = | 20 feet (6.10 meters) | C | = | 12 feet (3.66 meters) | ||
B | = | T20 | – | D | = | T20 | – |
|
| T30 | – |
|
| T30 | – |
|
| T50, T75 – |
|
| T50, T75 – | ||
NOTE 1 Opening from combustible materials must be
NOTE 2 Distance should be 2 times the diameter of the duct to the nearest obstruction.
Multiple Dryer (Common) Venting
Important
!For extended ductwork runs, the
extent. When the ductwork approaches the maximum limits as noted in this manual, a professional HVAC firm should be consulted for proper venting information.
If it is not feasible to provide separate exhaust ducts for each dryer, ducts from individual dryers may be channeled into a “common main duct.” The individual ducts should enter the bottom or side of the main duct at an angle not more than 45º in the direction of airflow. The main duct should be tapered, with the diameter increasing before each individual duct is added.
16 | JLA Limited | 113429 - 9 |
