Commercial hood and suppression systems are inspected by a an inspector from the Fire Marshal's Office to ensure that it has been installed in accordance with approved plans and is functioning properly.
The following is a list of items which will be commercial hood plans:
- Rooftop exhaust is > 10'-0" from property lines (including lane or street property lines), discharges are > 40" above the roof, and the fan housing outlet is > 5'-0" horizontally from any combustible structure.
- Elevations of the building exterior have been provided when there is exterior ductwork.
- The protection around the duct (or clearance) continues up through the roof assembly to 18" above the roof.
- Wall exhaust termination is > 10'-0" from: combustible construction, including exterior wall cladding adjacent grade openings below or to the side adjacent buildings private property lines city property lines.
- The exhaust is > 10'-0" from any air intake.
- Exhaust ducts are steel-welded, liquid tight and the ducts and their supports are min. 16-gauge carbon steel or min. 18-gauge stainless steel.
- Exterior portions of ductwork and supports are noncorrosive stainless steel / painted / weather-protection coating.
- All ducts lead, as directly as practical, to the exterior of the building and horizontal ducts are substantially pitched back to the hood to drain and collect the grease.
- Hood ducts are not combined with any other building ventilation or exhaust system.
- Ducts for a solid fuel appliances' hood are not combined with ducts for gas or other types of fuel.
- Based on construction the fir code requires minimum clearances from ductwork and associated equipment where there is no shaft
- IFC compliant wall from the floor to the hood is provided.
- IFC required minimum clearance between the shaft and the duct.
- When the clearance between the heat source and grease removal device is less than 18", protection such as a steel baffle plate will be provided in conformance with IFC.
- Separation is provided between deep fat fryers and the surface flames from adjacent
- Equipment as indicated in IFC.
- Exhaust canopy is UL listed? If not listed provide proper documentation for determination of IFC compliance.
- Provide exhaust information as IFC required.
- Provide make-up air supply information as IFC required.