Heating furnace using rapid response heat control mode

A heating control device comprising:

• input/output (I/O) ports configured to transmit and receive electrical signals;
• a memory operable to store a plurality of temperature difference thresholds;
• a microprocessor operably coupled to I/O ports and the memory, and configured to:
• transmit a first electrical signal to operate an air circulation fan at a first speed and a heating unit in a first configuration with at least one active burner from a plurality of burners within a gas manifold to achieve a first temperature, wherein:
• a first set of burners from the plurality of burners are disposed within a first segment of the gas manifold;
• a second set of burners from the plurality of burners are disposed within a second segment of the gas manifold;
• gas communication is disallowed between the first segment and the second segment of the gas manifold;
• and
• operating the air circulation fan at the first speed and the heating unit in the first configuration provides heat to a space;
• determine a first temperature difference between the first temperature and a temperature set point;
• compare the first temperature difference to a first temperature difference threshold;
• transmit a second electrical signal to transition the air circulation fan from the first speed to a second speed when the first temperature difference is less than the first temperature difference threshold, wherein the second speed is greater than the first speed, wherein transitioning the air circulation fan to the second speed achieves a second temperature that is less than the first temperature, and wherein operating the air circulation fan at the second speed provides less heat to the space than operating the air circulation fan at the first speed;
• determine a second temperature difference between the second temperature and the temperature set point;
• compare the second temperature difference to a second temperature difference threshold;
• and
• transmit a third electrical signal to transition the air circulation fan from the second speed to a third speed when the second temperature difference is less than the second temperature difference threshold, wherein transitioning the air circulation fan to the third speed achieves a third temperature that is less than the second temperature, and wherein operating the air circulation fan at the third speed provides less heat to the space than operating the air circulation fan at the second speed.

A heating control method comprising:

• operating, by a microprocessor, an air circulation fan at a first speed and a heating unit in a first configuration with at least one active burner from a plurality of burners to achieve a first temperature, wherein:
• a first set of burners from the plurality of burners are disposed within a first segment of the gas manifold;
• a second set of burners from the plurality of burners are disposed within a second segment of the gas manifold;
• gas communication is disallowed between the first segment and the second segment of the gas manifold;
• and
• operating the air circulation fan at the first speed and the heating unit in the first configuration provides heat to a space;
• determining, by the microprocessor, a first temperature difference between the first temperature and a temperature set point;
• comparing, by the microprocessor, the first temperature difference to a first temperature difference threshold;
• transitioning, by the microprocessor, the air circulation fan from the first speed to a second speed when the first temperature difference is less than the first temperature difference threshold, wherein the second speed is greater than the first speed, wherein transitioning the air circulation fan to the second speed achieves a second temperature that is less than the first temperature, and wherein operating the air circulation fan at the second speed provides less heat to the space than operating the air circulation fan at the first speed;
• determining, by the microprocessor, a second temperature difference between the second temperature and the temperature set point;
• comparing, by the microprocessor, the second temperature difference to a second temperature difference threshold;
• and
• transitioning, by the microprocessor, the air circulation fan from the second speed to a third speed when the second temperature difference is less than the second temperature difference threshold, wherein transitioning the air circulation fan to the third speed achieves a third temperature that is less than the second temperature, and wherein operating the air circulation fan at the third speed provides less heat to the space than operating the air circulation fan at the second speed.