Exhaust Rain Cap Installation

Use hi temperature rated sealant mil a 46106b 100 series rtv to install a bead of sealant at the gap around the perimeter of the thimble body and the.

Exhaust rain cap installation.

Skip navigation sign in. Vertical stacks require rain caps which impose little back pressure and can be forced open by exhaust. If you put a rain cap on or install some type of rain diverter on the dicharge you will. Older rain caps for metal chimneys and flue liners can deteriorate or fall apart but installing a replacement cap is as easy as climbing onto the roof.

Use hi temperature rated sealant mil a 46106b 100 series rtv to install a bead of. Small conical stack caps often do not completely exclude rain because rain does not always fall straight down. Level and secure the cap. Orient the rain cap such that the counter balance is facing against the.

Made from galvanized spiral pipe for strength and durability. Stack caps that deflect the exhaust jet have a detrimental effect on exhaust plume rise. Ensure that enough exhaust piping is installed to be able to install the rain cap and clamp. Semi circular flaps butterfly damper cover the exhaust stack when fan is off.

Place the rain cap over the exhaust pipe so that the top edge of the exhaust piping is a maximum of 25 from the top edge of the rain cap clamp. Ensure that enough exhaust piping is installed to be able to install the rain cap and clamp. Slide the new cap into the flue. When fan is on flaps are forced out of the way to provide a clear path for air movement.

Ensure that the exhaust pipe does not interfere with the rain cap closure. Ensure that the exhaust piping is not in contact with the inner wall of the thimble. Horizontal pipe outlets should be oriented away from prevailing winds and cut at 30 to 45 angles to reduce gas turbulence and resulting noise. The built in gutter system is designed to prevent rain and snow from entering the stack.

This video is about modify a too small rain cap to fit my farmall super a exhaust. 1949 farmall super a rain cap modification and installation and test jan kotze. A hinged flapper damper is opened by the exhaust flow from the stack and closes when the exhaust flow stops care must be taken to ensure continued proper operation. Cause the exhaust gas to be blown down towards the home.

This will increase the potential for the exhausted gas to re enter the home. The flapper damper on this type of cap may corrode allowing the flapper damper to stick open or closed. If the stub section on the cap is too large crimp it with a crimping tool. Ensure that the exhaust piping is not in contact with the inner wall of the thimble.

Available in most sizes.