Use the saw to cut open the wall or ceiling, if necessary, to give yourself enough room to work on the exhaust pipe. Using a hacksaw, cut off enough exhaust pipe to fit the inline backdraft damper in place of the pipe you removed.4. Attach the inline damper to the existing pipe with two sheet metal screws and duct tape, with the airflow arrow on the damper pointing away from the exhaust fan.
This damper opens automatically when the exhaust fan is blowing air, and it closes by itself when the fan is switched off. It's a persuaded road to deposit the chill air from backing up completed the pipes.
Instructions
1. Turn off the direction breaker to the exhaust fan. Remove the exhaust fan include. Most covers come off by prying the contour with a flathead screwdriver, although you may obtain to remove some screws. Remove the exhaust fan Engine and fan unit by unscrewing the screws that mastery it to the fan housing. Remove the exhaust fan housing (the metal box that holds the Engine and fan) by unscrewing the screws that attach it to the wood framing.
2. Degree the exhaust drainpipe carry on the fan unit. Pay for an inline backdraft damper in the alike width as the exhaust pipe.
3.You requirement the air to flow outside of your bullpen, not to repay down the exhaust transaction.It's troublesome to turn off the exhaust fan and stroke a bleak draft forthcoming back ended the exhaust manner. This might be a puzzle in the bathroom, cookhouse, Garret or wherever exhaust fans are installed. The thought is to install an inline backdraft damper.
Attach the exhaust fan housing to the inline damper with two sheet metal screws and duct tape.
5. Repair the wall or ceiling with drywall and plaster, if you cut it open. Replace the exhaust fan, motor and cover. Turn on the circuit breaker and test the fan.
