Arrangement for refrigerant leak management

A rooftop unit (RTU), comprising:

• a chamber;
• an additional chamber forming a control box in which controls circuitry of the RTU is disposed, wherein the control box comprises a high voltage cavity having a high voltage portion of the controls circuitry disposed therein, a low voltage cavity having a low voltage portion of the controls circuitry disposed therein, and at least one panel separating the high voltage cavity from the low voltage cavity;
• at least one additional panel positioned between the chamber and the additional chamber and comprising an opening establishing a fluid coupling between the chamber and the additional chamber;
• and
• a plurality of refrigerant leak detectors, wherein a refrigerant leak detector of the plurality of refrigerant leak detectors is positioned in the additional chamber and configured to detect a migration of leaked refrigerant from the chamber, through the opening, and into the additional chamber, and wherein the controls circuitry is configured to:
• receive sensor feedback indicative of the leaked refrigerant from the refrigerant leak detector;
• and
• perform an action based on the sensor feedback.

A rooftop unit (RTU), comprising:

• a fluid conduit configured to convey a refrigerant, wherein the fluid conduit comprises a first portion, a second portion, and a brazed joint coupling the first portion and the second portion;
• a plurality of refrigerant leak detectors, wherein a refrigerant leak detector of the plurality of refrigerant leak detectors is positioned adjacent to the brazed joint;
• a chamber;
• a blower disposed in the chamber;
• an additional refrigerant leak detector of the plurality of refrigerant leak detectors, wherein the additional refrigerant leak detector is positioned in the chamber and coupled to the blower;
• and
• controls circuitry configured to:
• receive sensor feedback indicative of a refrigerant leak from the refrigerant leak detector, the additional refrigerant leak detector, or both;
• and
• perform an action based on the sensor feedback.

A rooftop unit (RTU), comprising:

• a fluid conduit configured to convey a refrigerant, wherein the fluid conduit comprises a first portion, a second portion, and a brazed joint coupling the first portion and the second portion;
• a plurality of refrigerant leak detectors, wherein a refrigerant leak detector of the plurality of refrigerant leak detectors is positioned adjacent to the brazed joint;
• a return air chamber fluidly coupled with a return air inlet of the RTU, wherein the plurality of refrigerant leak detectors comprises an additional refrigerant leak detector positioned in the return air chamber;
• and
• controls circuitry configured to:
• receive sensor feedback indicative of a refrigerant leak from the refrigerant leak detector, the additional refrigerant leak detector, or both;
• and
• perform an action based on the sensor feedback.

A rooftop unit (RTU), comprising:

• a chamber;
• an additional chamber forming a control box in which controls circuitry of the RTU is disposed;
• at least one panel positioned between the chamber and the additional chamber and comprising an opening establishing a fluid coupling between the chamber and the additional chamber;
• a plurality of refrigerant leak detectors, wherein a refrigerant leak detector of the plurality of refrigerant leak detectors is positioned in the additional chamber and configured to detect a migration of leaked refrigerant from the chamber, through the opening, and into the additional chamber;
• a fluid conduit configured to convey a refrigerant, wherein the fluid conduit comprises a first portion, a second portion, and a brazed joint coupling the first portion and the second portion;
• a blower configured to generate an air flow;
• an additional refrigerant leak detector of the plurality of refrigerant leak detectors, wherein the additional refrigerant leak detector is coupled to the blower or positioned adjacent to the brazed joint, and wherein the controls circuitry is configured to:
• receive sensor feedback indicative of the leaked refrigerant from the refrigerant leak detector, indicative of additional leaked refrigerant from the additional refrigerant leak detector, or indicative of the leaked refrigerant from the refrigerant leak detector and the additional leaked refrigerant from the additional refrigerant leak detector;
• and
• perform an action based on the sensor feedback.