Dryer vented to outdoors safely and effectively
Specifications
- SF
- MH
- MF
Specification | Objective |
---|---|
Select dryer transition ducting materials that are UL 2158A approved and less than 8 feet in total length with no joints Select primary dryer ducting material that is 28 gauge metal with a smooth interior
Select primary dryer ducting material that is 28 gauge metal with a smooth interior |
Smooth airflow that does not collect lint Smooth airflow that does not collect lint |
- SF
- MH
- MF
Specification | Objective |
---|---|
Vent all clothes dryers to the outdoors, which does not include unconditioned spaces such as attics and crawl spaces that are ventilated with the outdoors Choose the shortest practical installation path Install a dryer booster fan that is listed and labeled to UL 705 for dryer ducts exceeding 35' in equivalent length Install ducts according to SWS detail for "Ventilation Ducts" Vent all clothes dryers to the outdoors, which does not include unconditioned spaces such as attics and crawl spaces that are ventilated with the outdoors Choose the shortest practical installation path Install a dryer Install ducts according to SWS detail for "Ventilation Ducts" |
Dryer ducted to outdoors durably and effectively Dryer ducted to outdoors durably and effectively |
- SF
- MH
- MF
Specification | Objective |
---|---|
If a lint collection device is installed, it must: be UL approved for dryers be installed according to manufacturer specifications be airtight when dryer is operating |
Safe and airtight lint collection |
- SF
- MH
- MF
Specification | Objective |
---|---|
Fasten all duct connections with mechanical fasteners that do not penetrate the interior of the duct (e.g., clamps, gasketed fitting) No fastener may penetrate the interior of the duct |
Securely fastened without obstructing flow |
- SF
- MH
- MF
Specification | Objective |
---|---|
If the dryer operation interferes with combustion appliance operation, make-up air must be provided according to applicable code |
Safe operation of combustion appliances |
- SF
- MH
- MF
Specification | Objective |
---|---|
Insulate dryer ducts installed outside of the thermal boundary to a minimum of R-8 |
Prevent condensation |
- SF
- MH
- MF
Specification | Objective |
---|---|
Vent dryer through a termination manufactured for use with dryers that includes a backdraft damper Termination may not contain a pest screen |
Dryer termination that is effective, safe and does not inhibit flow |
- SF
- MH
- MF
Specification | Objective |
---|---|
Seal all duct connections with 181B or 181B-M listed material |
Airtight ducts |
- SF
- MH
- MF
Specification | Objective |
---|---|
Plumb condensing dryers to a drain |
Condensate properly disposed |