초록 ▼

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/o

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.

대표청구항 ▼

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/o

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. /SUB>and having a minimum moment of inertia I(φmin) about a second axis in said equatorial plane at a second azimuthal angle φmin,a percentage moment variation V being given by V=100×[(I(φmax))-(I(φmin))]/(I(φmax)), port member for attaching said elongated support member to an object in a spaced-apart relationship thereto; and at least one cable-receiving split ring non-movably attached to said elongated support member, said at least one cable-receiving support member defining a cable-receiving area having a perimeter surrounded by a rigid barrier, said rigid barrier having an opening therethrough through which at least one cable may be inserted. 30. The cable support apparatus of claim 29 wherein said cable-receiving split rings are welded to said elongated support member. 31. The cable support apparatus of claim 30 wherein each said cable-receiving split ring is fabricated from metal rod having a circular cross-sectional shape. 32. A cable support apparatus, comprising: an elongated support member; at least one cable-receiving support member attached to said elongated support member, said at least one cable-receiving support member defining a cable-receiving area having a perimeter surrounded by a rigid barrier, said rigid barrier having an opening therethrough through which at least one cable may be inserted; a first attachment member attached to one end of said elongated support member, said first attachment member having at least one first attachment tab attached thereto; and a second attachment member attached to another end of said elongated support member and having at least one said second attachment tab attached thereto. 33. The apparatus of claim 32 further comprising at least