Generator Roof Thimble

Mvt ventilated thimble assembly.

Generator roof thimble.

Wall and roof thimbles provide transitions where it is necessary to pass exhaust pipe through walls and roofs safely to the outside atmosphere. Thimble provides a weather tight seal when used with hi temperature sealant thimbles are critical in complying with local fire and safety regulations by protecting wall and or roof material from exhaust tube heat. The thimbles prevent exhaust pipe heat from being transmitted to the combustible material. Apply a bead of hi temperature rated sealant mil a 46106b 100 series rtv around the perimeter of the interior flashing that will be in contact with the roof wall and is a minimum of one inch from the edge of the flashing.

Install the thimble through the penetration so that the exterior flashing is flush to the roof wall clocking as needed. All inexhaust thimbles conform to nfpa 37 and 110. Before installing you should obtain the most up to date copies of local codes applicable to generator set or other applicable installation. All dimensions are in inches.

Thimbles provide transitions for exhaust piping where it is necessary to pass exhaust pipe through walls and roofs safely to the outside atmosphere. Ampco installation guide 2 mb pdf performance data 63 kb pdf for use where pipe passes through a combustible roof or structure. Inexhaust thimbles conform to nfpa 37 and 110. Alz or galv 304 316.

Pitched roof thimbles available contact factory for more details. Exhaust piping that passes through any combustible roof must be separated from the roof by a ventilated metal thimble that is at least 6 inches in diameter larger than the piping. Standard construction carbon steel with high heat black enamel finish. Available in stainless steel.

The thimble must extend at least 9 inches 229mm 10 inches 250mm recommended above and below roof construction. Hapco insulated exhaust roof and wall thimbles are recommended for use with exhaust pipes that must pass through a structure. Also guides the chimney 6 above the roof line. Fabricated with a 2 thick 2300 degree rated high temperature insulation with built in pipe guide eliminating hot spots.

Roof thimbles have been designed for standard 8 thick roof applications. Custom roof thimble lengths are available upon request. Size a dwg no iecwt rev 0 sheet 1 exhaust components ltd is prohibited of 1 industrial exhaust components ltd. Picture of gt exhaust thimble.

Thimbles are critical in complying with local fire and safety regulations by protecting wall and roof material from exhaust pipe heat.