Abstract: A demand ventilation module for use with HVAC/R systems for ventilating inside space of a structure through an air pressure differential between return air and outside air. The demand ventilation module includes an integrated damper and an electronic control device capable of marking, setting, and/or storing air condition setpoints for ventilation activation. The electronic control device is configured to automatically control the activation of an actuator in conjunction with an inside sensor that measures air conditions in direct proportion to actual real-time air condition demands. A method for installing a demand ventilation module on return portions of HVAC/R systems may include: evaluating the return portion of an HVAC/R system to ascertain return air negative static pressure; and determining where to install the demand ventilation module on the return portion based upon a location corresponding with a range of return air negative static pressure.

Abstract: A demand ventilation module is provided for use with HVAC systems in order to ventilate inside space of a structure through an air pressure differential between return air and outside air. The demand ventilation module includes an integrated damper. The demand ventilation module can further include and an air restrictor plate that defines an air-restricting opening and an electronic control device capable of marking, setting, and/or storing air condition set-points for ventilation activation, and configured to facilitate ventilation control, economizer operation, and HVAC unit operation. The electronic control device is electrically connected to and controls the activation of an actuator in conjunction with inside and outside sensors that measure air conditions. The electronic control device can cause the actuator to automatically shift the damper in direct proportion to actual real-time air condition demands.

Abstract: A demand ventilation module is provided for use with HVAC systems in order to ventilate inside space of a structure through an air pressure differential between return air and outside air. The demand ventilation module includes an integrated damper. The demand ventilation module can further include and an air restrictor plate that defines an air-restricting opening and an electronic control device capable of marking, setting, and/or storing air condition set-points for ventilation activation, and configured to facilitate ventilation control, economizer operation, and HVAC unit operation. The electronic control device is electrically connected to and controls the activation of an actuator in conjunction with inside and outside sensors that measure air conditions. The electronic control device can cause the actuator to automatically shift the damper in direct proportion to actual real-time air condition demands.