Self-contained ventilation flow control system

A ventilation flow control unit comprising:

• a plenum;
• a flow controller mounted to said plenum;
• a flow sensor mounted to said plenum;
• a thermal coil fixed to said plenum, for affecting the temperature of air passing through said ventilation flow control unit;
• and
• an automatic valve connected with at least one fluid line of said thermal coil;
• and
• wherein said plenum, said flow controller, said flow sensor, said thermal coil, and said automatic valve are preassembled to form said ventilation flow control unit, thereby enabling said ventilation flow control unit to be installed in an HVAC system as a single unit.

A ventilation flow control unit comprising:

• a plenum;
• a flow controller mounted to said plenum;
• a thermal coil with at least one automatic fluid valve;
• a flow sensor mounted to said plenum;
• an electrical disconnect;
• and
• a voltage converter electrically coupled to receive electrical power from said disconnect, for converting a first voltage received from said disconnect to a second lower voltage and providing said lower voltage to said automatic fluid valve;
• and
• wherein said plenum, said flow controller, said thermal coil, said flow sensor, said electrical disconnect, and said voltage controller are preassemble to form said ventilation flow control unit, thereby enabling said ventilation flow control unit to be installed in an HVAC system as a single unit.

A ventilation flow control system comprising:

• a first flow control unit for controlling the flow of air into a room, said first flow control unit including a duct, a flow controller mounted to said duct, and a sensor mounted to said duct;
• a second flow control unit for controlling the flow of air out of said room, said second flow control unit including a duct, a flow controller mounted to said duct, and a sensor mounted to said duct;
• and
• a control unit for receiving feedback signals from said sensors and providing control signals to said flow controllers;
• and wherein at least one of said first and second flow control units includes an isolation valve.

A ventilation flow control unit comprising:

• a plenum;
• a flow controller mounted to said plenum;
• a flow sensor mounted to said plenum;
• a flow straightener mounted to said plenum adjacent said flow sensor, said flow straightener reducing the turbulence of air flowing past said flow sensor;
• and
• an electrical disconnect;
• and
• wherein said plenum, said flow controller, said flow sensor, said flow straightener, and said electrical disconnect are preassembled to form said ventilation flow control unit, thereby enabling said ventilation flow control unit to be installed in an HVAC system as a single unit.

A ventilation flow control system comprising:

• a first flow control unit mounted in an air supply duct for controlling the flow of air into a room, said first flow control unit including a duct, a flow controller mounted to said duct, and a sensor mounted to said duct;
• a second flow control unit mounted in an air return duct for controlling the flow of air out of said room, said second flow control unit including a duct, a flow controller mounted to said duct, and a sensor mounted to said duct;
• a third flow control unit mounted in an exhaust duct for controlling the flow of air out of said room, said third flow control unit including a duct, a flow controller mounted to said duct, and a sensor mounted to said duct, and
• a control unit for receiving feedback signals from said sensors and providing control signals to said flow controllers.