Safely and efficiently remove pollutants from garage space
Specifications
- SF
- MH
Specification | Objective |
---|---|
Select a fan that: has an electrically commutated motor (ECM) has an efficacy of 3.8 cfm/watt or more exhausts 100 cfm per garage bay after installation |
Efficient fan selection |
- MF
Specification | Objective |
---|---|
Select a fan that: has an electrically commutated motor (ECM) has an efficacy of 3.8 cfm/watt or more exhausts 0.75cfm/ft2 of garage area after installation motors 1 horsepower or larger will meet NEMA premium efficiency standards |
Efficient fan selection |
- SF
- MH
- MF
Specification | Objective |
---|---|
Select sealants that: are compatible with their intended surfaces, allow for differential expansion and contraction between dissimilar materials, meet the requirements of the applicable fire safety code (e.g., thermal or ignition barriers), and for use inside the pressure boundary select low volatile organic compound (VOC) sealants that meet independent testing and verification protocols |
Select safe and effective sealant |
- SF
- MH
- MF
Specification | Objective |
---|---|
Install all electrical wiring according to manufacturer specifications and applicable code |
Prevent an electrical hazard |
- SF
- MH
- MF
Specification | Objective |
---|---|
Orient the fan outlet toward the final termination location and so the equivalent length of the duct run is as short as possible |
Short, effective fan venting |
- SF
- MH
- MF
Specification | Objective |
---|---|
Mount fan using mechanical fasteners and per manufacturer's specifications so that fan housing does not shake, rattle, or vibrate when operating |
Securely mounted fan |
- SF
- MH
- MF
Specification | Objective |
---|---|
If the fan does not contain an integrated damper, install a damper that: opens in the direction of the desired flow closes when the system is off |
Prevent unwanted air movement while not restricting desired air flow |
- SF
- MH
Specification | Objective |
---|---|
Fan must operate continuously or have automatic controls that activate the fan whenever the garage is occupied and for 15 minutes after the garage is vacated |
Correct exhaust strategy |
- MF
Specification | Objective |
---|---|
Fan must operate continuously |
Correct exhaust strategy |
- SF
- MH
- MF
Specification | Objective |
---|---|
Cut hole for intakes or surface mounted fans leaving no more than a 1/4" gap on each side Install register boots using mechanical fasteners sufficient to prevent movement |
Durable intake boots with properly sized opening |
- SF
- MH
- MF
Specification | Objective |
---|---|
Seal gaps around intake register boots or fan housing with compatible sealant Seal leakage locations between living space and garage Remove or cap and seal supply and/or return registers in garage that are connected to the same duct system as living space |
Minimize air exchange between garage and dwelling |
- SF
- MH
- MF
Specification | Objective |
---|---|
Ensure fan and service disconnect switch are accessible for maintenance according to NEC, or applicable building code |
Accessible for service |
- SF
- MH
- MF
Specification | Objective |
---|---|
Terminate exhaust venting a minimum of 15' from any doors, windows, or outside air intakes |
Prevent reentry of exhausted pollutants |
- SF
- MH
- MF
Specification | Objective |
---|---|
Duct and terminate fan to the outdoors, which does not include unconditioned spaces such as attics and crawl spaces that are ventilated with the outdoors, in accordance with SWS detail for "Ventilation Ducts" |
Exhausted to outdoors |