An illustrative damper system includes a damper blade that is configured to be positioned within a duct, such as a bypass duct of an HVAC system. A shaft is in communication with the damper blade, and an actuator or force adjustment mechanism is in communication with the shaft. The actuator or force
An illustrative damper system includes a damper blade that is configured to be positioned within a duct, such as a bypass duct of an HVAC system. A shaft is in communication with the damper blade, and an actuator or force adjustment mechanism is in communication with the shaft. The actuator or force adjustment mechanism may include a housing and a spring therein, where the spring is in communication with the shaft. The shaft, the damper blade, and the spring may be configured such that the shaft may affect movement of the damper blade about a rotation axis offset from a diametrical axis of the damper blade.
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1. A forced air damper actuator configured for use in conjunction with an air duct including a damper blade configured to be positioned within the air duct in order to affect air flow through the air duct, and a shaft in communication with the damper blade, the damper actuator comprising: an actuato
1. A forced air damper actuator configured for use in conjunction with an air duct including a damper blade configured to be positioned within the air duct in order to affect air flow through the air duct, and a shaft in communication with the damper blade, the damper actuator comprising: an actuator housing configured to be disposed outside of the air duct;a spring positioned substantially within the actuator housing, where the spring is configured to apply a rotational bias force to the shaft that controls a crack pressure of the air duct;a bias force adjustment mechanism positioned substantially within the actuator housing for adjusting the rotational bias force that is applied by the spring to the shaft, the bias force adjustment mechanism having a bias force adjustment setting that can be changed;wherein the damper actuator is configured to be removably engaged with the shaft, and when engaged, sets the crack pressure of the air duct. 2. The forced air damper actuator of claim 1, further comprising: a clip configured to facilitate fixing the actuator housing of the damper actuator with respect to the shaft. 3. The forced air damper actuator of claim 2, further comprising: a quick release mechanism configured to engage the clip and release the actuator housing from a fixed position with respect to the shaft. 4. The forced air damper actuator of claim 1, wherein the damper actuator is configured to be stood off from the air duct a distance far enough to substantially prevent sweating on the air duct. 5. The forced air damper actuator of claim 4, wherein the distance between the damper actuator and the air duct is sized to facilitate an insulation layer about the air duct. 6. The forced air damper actuator of claim 1, further comprising: a standoff configured to connect to the air duct and the damper actuator. 7. The forced air damper actuator of claim 6, further comprising: a clip positioned substantially within the actuator housing; andwherein the standoff includes a body connector configured to snap into the clip. 8. The forced air damper actuator of claim 7, further comprising: a connector release positioned at least partially within the actuator housing and configured to engage the body connector. 9. The forced air damper actuator of claim 8, wherein the connector release is configured to be actuated from exterior the actuator housing. 10. The forced air damper actuator of claim 1, wherein the bias force adjustment mechanism comprises: one or more gears that when turned wind/unwind the spring to adjust the rotational bias force setting; anda first indicator viewable from outside of the actuator housing, the first indicator configured to provide an indication of the current rotational bias force setting. 11. The forced air damper actuator of claim 1, further comprising a second indicator that is viewable from outside of the actuator housing, the second indicator configured to provide an indication of the current rotational position of the shaft. 12. A forced air damper system for use in conjunction with an air duct, comprising: a damper blade configured to be positioned within the air duct;a shaft in communication with the damper blade to affect movement of the damper blade within the air duct; anda manually operated actuator configured to be removably engaged with the shaft, and when engaged with the shaft, the manually operated actuator is configured to affect air flow through the air duct by rotating the shaft and thus affecting movement of the damper blade, the manually operated actuator is further configured to establish a pressure set point for the damper system, the manually operated actuator comprising: an actuator housing configured to be secured outside of the duct;a spring positioned substantially within the actuator housing, where the spring is configured to apply a rotational bias force to the shaft that sets the pressure set point for the damper system;a bias force adjustment mechanism positioned substantially within the actuator housing for adjusting the rotational bias force that is applied by the spring to the shaft, the bias force adjustment mechanism having a settable bias force adjustment setting;an indicator viewable from outside of the actuator housing and configured to provide a visual indication of the established pressure set point. 13. The forced air damper system of claim 12, wherein the manually operated actuator further comprises: a blade position indicator positioned substantially within the actuator housing and operatively coupled to the shaft;wherein the blade position indicator is configured to indicate a position of the damper blade. 14. The forced air damper system of claim 13, wherein the manually operated actuator further comprises: a shaft connector removably connectable to the shaft; andwherein the blade position indicator is operatively coupled to the shaft connector. 15. The forced air damper system of claim 12, wherein the manual operated actuator is separated from the air duct by a distance, where the distance is at least great enough to facilitate receiving an insulation layer applied to an outer layer of the air duct. 16. The forced air damper system of claim 12, further comprising: a damper stop configured to engage the damper blade when the damper blade is in a closed position; andwherein the established pressure set point is an amount of pressure within the air duct that is required to crack open the damper blade from the damper stop. 17. A damper system for use in conjunction with a duct, the duct including a damper blade stop, the damper system comprising: a damper blade configured to be positioned within the duct;a shaft in communication with the damper blade to affect movement of the damper blade within the duct;an actuator in communication with the shaft, the actuator comprising: an actuator housing configured to be secured outside of the duct;a spring substantially within the actuator housing and in communication with the shaft for controlling a pressure set point for the duct;a bias force adjustment mechanism positioned substantially within the actuator housing for adjusting the rotational bias force that is applied by the spring to the shaft, the bias force adjustment mechanism having a settable bias force adjustment setting that sets the pressure set point for the duct;wherein the damper blade has a center of gravity at a position offset from a diametrical axis of the damper blade; andwherein the shaft engages the damper blade at a position offset from a diametrical axis of the damper blade to create a first portion of the damper blade and a second portion of the damper blade, where a surface area of the first portion of the damper blade is greater than a surface area of the second portion of the damper blade and the first portion of the damper blade includes at least a portion that is arranged at an obtuse angle relative to the second portion of the damper blade. 18. The damper system of claim 17, wherein the center of gravity of the damper blade is substantially at a position at which the shaft engages with the damper blade. 19. The damper system of claim 17, wherein the spring has a stiffness in the range of 0.1 Newton-millimeters/degree to 0.6 Newton-millimeters/radian. 20. The damper system of claim 17, wherein: the damper blade includes a weight supported by the second portion of the damper blade.
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