![]() ![]() ![]() You can place the motor actuator anywhere you wish if you mount the damper vertically under a register. For a horizontal duct, set the motor actuator on the top or side of the duct do not put it on the bottom. With an automated damper, pay attention to the motor actuator’s position, and rotate the damper as needed. ![]() The crimped end needs to be pointing away from the furnace, so the air goes past the seam without leaking when the damper is open. Slide the crimped side of the new damper either into the register boot or into the uncrimped end of your rigid, round duct section that points away from the plenum collar. Brush the crimped surface of the duct or boot as well. 4īrush the crimped edge of the damper with mastic you will achieve far superior protection against air leaks with mastic than with duct tape and may want to retrofit your other duct sections as well. Pull the nearest duct section out of the damper and let it hang suspended safely. Or, if the tape is loose and peeling, just pull off the tape and unfasten the screws. Remove the sheet metal screws through the scoring in the tape. Score the duct tape or foil at each side of the damper with a utility knife - one end will connect to the register boot or plenum collar and the other to a duct section or possibly an elbow. Check to see if the first section of duct work nearest the damper has some kind of support - such as brackets, hangers, straps or wires. 1Īccess the basement duct work to locate the existing dampers, either on the supply side of the furnace plenum or in the register boot. You’ll need to become an HVAC apprentice for an hour or two so you can replace the dampers. You may want to upgrade to fancier dampers, such as automated balancing dampers with integrated electronics. You control them with a bar called an adjustment handle. After installation, these simple galvanized sheet-metal circles pivot on two pins inserted in small holes you drill in the start collar of a supply duct or the sides of a register can. Manual balancing dampers, typically found in round HVAC ducts in sizes ranging from 4 to 10 inches, don’t tend to wear out. 3 Know if Your Air Conditioning Ducts Need Cleaning.2 Prepare & Paint Rusting Interior Heating Ducts.1 Replace a Metal Duct With a Flexible Duct. ![]()
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January 2023
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