Abstract: Insulated panel assemblies can be used to construct an insulating enclosure and the like. The insulated panel assemblies can have the same configuration and fit together to form a substantially sealed, insulated enclosure. The insulated panel assemblies themselves are particularly constructed for ease of formation and construction of the panel assemblies. Methods of forming an insulated panel assembly and using the panel assemblies to construct an insulated disclosure are also disclosed.

Abstract: Monitoring airflows through fan arrays and adjusting fan speeds during air handling system operations to dynamically provide and/or maintain balanced discharge airflows. An air handling system controller utilizes fan speed and airflow data values of each fan array to determine whether a fan speed setpoint of the fans of a fan array should be increased or decreased in order to balance the airflow through each fan array. When an increase or decrease in the fan speed setpoint is required, the controller adjusts the fan speeds accordingly.

Abstract: Insulated panel assemblies can be used to construct an air-handling enclosure and the like. The insulated panel assemblies can have the same configuration and fit together to form a substantially sealed, insulated enclosure. The insulated panel assemblies themselves are particularly constructed for ease of formation and construction of the panel assemblies. A method of forming insulated panel assembly is also disclosed.

Abstract: Insulated panel assemblies can be used to construct an insulating enclosure and the like. The insulated panel assemblies can have the same configuration and fit together to form a substantially sealed, insulated enclosure. The insulated panel assemblies themselves are particularly constructed for ease of formation and construction of the panel assemblies. Methods of forming an insulated panel assembly and using the panel assemblies to construct an insulated disclosure are also disclosed.

Abstract: Monitoring airflows through fan arrays and adjusting fan speeds during air handling system operations to dynamically provide and/or maintain balanced discharge airflows. An air handling system controller utilizes fan speed and airflow data values of each fan array to determine whether a fan speed setpoint of the fans of a fan array should be increased or decreased in order to balance the airflow through each fan array. When an increase or decrease in the fan speed setpoint is required, the controller adjusts the fan speeds accordingly.

Abstract: A burner box for use in an air handling system. The burner box includes a main body having a top wall, a bottom wall, side walls extending between the top and bottom walls, and intermediate walls extending between the top and bottom walls and positioned between the side walls. An open upstream end of the main body is divided by the intermediate walls into a first bypass opening and a second bypass opening spaced from the first bypass opening by a burner opening. A direct fired burner is positioned in the main body between the intermediate walls and adjacent the burner opening such that air drawn into the main body through the burner opening is directed over the direct fired burner for heating. An electronic control system is operatively connected to the burner box and configured to maintain a constant pressure difference across the direct fired burner.

Abstract: A backflow preventer for use in a multiple fan array system that draws air from an inlet area and expels it into a discharge area includes a main body defining an open front end and an open rear end and is adapted for attachment to a fan of the fan array system adjacent an inlet of the fan. Doors are attached to the main body and configured for movement between an open position in which air is permitted to enter through the open front end and a closed position in which the doors block the open front end and air is prevented from entering through the open front end. The doors are movable between the open position and the closed position by a pressure differential between the inlet area and the discharge area. The doors in the open position form a tapered intake passageway that funnels air into the fan.

Abstract: Insulated panel assemblies can be used to construct an air-handling enclosure and the like. The insulated panel assemblies can have the same configuration and fit together to form a substantially sealed, insulated enclosure. The insulated panel assemblies themselves are particularly constructed for ease of formation and construction of the panel assemblies. A method of forming insulated panel assembly is also disclosed.

Abstract: A burner box for use in an air handling system. The burner box includes a main body having a top wall, a bottom wall, side walls extending between the top and bottom walls, and intermediate walls extending between the top and bottom walls and positioned between the side walls. An open upstream end of the main body is divided by the intermediate walls into a first bypass opening and a second bypass opening spaced from the first bypass opening by a burner opening. A direct fired burner is positioned in the main body between the intermediate walls and adjacent the burner opening such that air drawn into the main body through the burner opening is directed over the direct fired burner for heating. An electronic control system is operatively connected to the burner box and configured to maintain a constant pressure difference across the direct fired burner.

Abstract: A backflow preventer for use in a multiple fan array system that draws air from an inlet area and expels it into a discharge area includes a main body defining an open front end and an open rear end and is adapted for attachment to a fan of the fan array system adjacent an inlet of the fan. Doors are attached to the main body and configured for movement between an open position in which air is permitted to enter through the open front end and a closed position in which the doors block the open front end and air is prevented from entering through the open front end. The doors are movable between the open position and the closed position by a pressure differential between the inlet area and the discharge area. The doors in the open position form a tapered intake passageway that funnels air into the fan.

Abstract: An improved wall structure for HVAC enclosures utilizing thermoplastic standoffs to form an air space and to separate the exterior wall structure of the enclosure from the interior wall structure. The position of the thermoplastic standoffs and the selection of the design for the standoffs insure that metallic fasteners would secure the exterior walls of the enclosure to the enclosure do not transmit thermal energy from the external wall to the internal wall.

Abstract: The invention is a modular heating, cooling and humidifying unit designed to fit within, or be interposed between segments of existing air ducting systems. The invention includes a plenum through which air is received from a central system within a structure, and which discharges heated, cooled and/or humidified air to a particular compartment within the structure, such as a room. The invention includes within the plenum a heating coil, a cooling coil and a humidifier, one or more dampeners and one or more air filters. Each of these elements is provided with controls which may be both manually and automatically operated to regulate the temperature and humidity of air being discharged into the desired room or compartment.