An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.

An infrared sensor is installed to one of the corners of a decorative panel to face different directions at the respective corners. A controller controls one of several air direction vanes and thus airflow out of one of air outlets and an air-conditioning apparatus to perform an operation, makes a determination of the installation position of the infrared sensor from one of several divided areas in which a temperature difference in floor surface between before and during an operation of the one of the air direction vanes equals or exceeds a specified value, a disposition position of the one of the air direction vanes, and an installation direction of the infrared sensor, and makes the one of the divided areas in which the temperature difference equals or exceeds the specified value correspond to the one of the air direction vanes to be controlled.

The air-conditioning-apparatus indoor unit includes a main body that has an air inlet and an air outlet that accommodates a heat exchanger and a fan, left-right deflectors that are arranged in the air outlet and are configured to change the direction of an air flow from the air outlet in a left-right direction, up-down deflectors that are arranged in the air outlet and are configured to change the direction of the air flow from the air outlet in an up-down direction, the infrared sensor disposed at one end in the left-right direction of the front surface of the main body, and a large air flow control plate, a small air flow control plate, and an upper air flow control plate that are arranged between the infrared sensor and one end of the left-right deflector close to the infrared sensor and that control the air flow from the air outlet.

An indoor unit includes a main unit including an air inlet through which air enters from a room and an air outlet through which air blows into the room, an electrical component box mounted on an outer surface of the main unit and accommodating an electrical device, a refrigerant pipe connection portion to which a refrigerant pipe through which refrigerant passes is connected, a drain pipe connection portion to which a drain pipe through which drain water discharged from the main unit passes is connected, and an installation bolt attachment bracket mounted on the outer surface of the main unit and fixing the main unit to an installation bolt suspended from above a ceiling. The indoor unit has the refrigerant pipe connection portion, the drain pipe connection portion, and the electrical component box on the same mounting surface.

An indoor unit includes a main unit including an air inlet through which air enters from a room and an air outlet through which air blows into the room, an electrical component box mounted on an outer surface of the main unit and accommodating an electrical device, a refrigerant pipe connection portion to which a refrigerant pipe through which refrigerant passes is connected, a drain pipe connection portion to which a drain pipe through which drain water discharged from the main unit passes is connected, and an installation bolt attachment bracket mounted on the outer surface of the main unit and fixing the main unit to an installation bolt suspended from above a ceiling. The indoor unit has the refrigerant pipe connection portion, the drain pipe connection portion, and the electrical component box on the same mounting surface.

Examples provide a system for a temperature-controlled receiving tunnel. A main body includes an interior compartment and a set of adjustable bulkheads configured to create a set of temperature-controlled zones within the interior compartment. A set of cooling devices are configured to adjust an internal temperature of the set of temperature-controlled zones within the interior compartment. A control device analyzes dynamic truck delivery data and ambient temperature data to generate a predicted cooling time and a cooling initiation time. The predicted cooling time comprises an estimated quantity of time after the cooling initiation time to reach a target temperature within a selected zone in the set of temperature-controlled zones.

Examples provide a system for a temperature-controlled receiving tunnel. A main body includes an interior compartment and a set of adjustable bulkheads configured to create a set of temperature-controlled zones within the interior compartment. A set of cooling devices are configured to adjust an internal temperature of the set of temperature-controlled zones within the interior compartment. A control device analyzes dynamic truck delivery data and ambient temperature data to generate a predicted cooling time and a cooling initiation time. The predicted cooling time comprises an estimated quantity of time after the cooling initiation time to reach a target temperature within a selected zone in the set of temperature-controlled zones.

An apparatus for conditioning a space includes a frame; an internal space within the frame, into which internal space a supply air flow is conducted; a cover panel into which a perforated area is arranged, the perforated area including perforations, each perforation having a diameter; and a heat exchanger arranged within the frame and including at least one heat exchanger coil, lamellas, and openings arranged between each adjacent lamella, each opening having a length.

A fan motor for an air conditioner includes a rotor shaft, a plurality of rotor cores arranged in a circumferential direction about a center of the rotor shaft, a bridge configured to couple the rotor cores, permanent magnets coupled to the plurality of rotor cores, and an insert-injected rotor body provided in a space formed through the rotor shaft, the rotor cores, the bridge, and the permanent magnets. A cable holder for the fan motor includes an upper cable holder in which a plurality of protrusion walls are formed downwardly, a lower cable holder in which a plurality of guide walls coupled between the plurality of protrusion walls are formed upwardly, and a soldering land which is formed in a lower portion of the lower cable holder and upon which a wire can be soldered.

Systems and methods are disclosed for validating the installation and operation of a fault detection and diagnostic module that monitors a component of an HVAC system. A remote diagnostic server is in operative communication with the HVAC system, and with the fault detection and diagnostic module. A user device communicates data to the remote diagnostic server that defines an association between the fault detection and diagnostic module and the HVAC system. The remote diagnostic server initiates an installation validation by sending a command to the HVAC system that causes the monitored component to initiate an event that is expected to be reported by the fault detection and diagnostic module. For example, a fan motor is turned on. If correctly installed, the fault detection and diagnostic module senses the event, and reports the event to the remote diagnostic server, which confirms the association. The remote diagnostic server sends a message to the user device indicating the result of the validation.