Quick heat algorithm for modulating heating equipment

1 . A controller of a modulating furnace of a heating, ventilation, and air conditioning (HVAC) system, the controller comprising a tangible, non-transitory, computer- readable medium having computer-executable instructions stored thereon that, when executed, are configured to cause processing circuitry to:

receive a call for heating, wherein the call for heating is indicative of a user selection of a quick heat mode received via a user interface;

operate the modulating furnace in a quick heat operating mode for a threshold time period

in response to receipt of the call for heating indicative of the user selection;

in response to lapse of the threshold time period, transition operation of the modulating furnace from the quick heat operating mode to a modulating heat operating mode; and

during operation in the modulating heat operating mode modulate an operating capacity of the modulating furnace based on a value of a temperature difference between a set point temperature of a conditioned space and a measured temperature of the conditioned space,

wherein the computer executable instructions, when executed, are configured to cause the processing circuitry to:

receive an additional call for heating subsequent to receipt of the call for heating:

determine a number of heating cycles executed by the modulating furnace between the call for heating and the additional call for heating:

associate the additional call for heating with a quick heat cycle in response to a determination that the number of heating cycles meets or exceeds a threshold number of cycles;

and

operate the modulating furnace in the quick heat operating mode in response to the additional call for heating being associated with the quick heat cycle.

2 . The controller of claim 1 , wherein the computer executable instructions, when executed, are configured to cause the processing circuitry to receive feedback indicative of the measured temperature of the conditioned space from a sensor, and the feedback comprises a return air temperature.

3 . The controller of claim 2 , wherein the computer executable instructions, when executed, are configured to cause the processing circuitry to suspend operation of the modulating furnace in response to the measured temperature of the conditioned space reaching the set point temperature of the conditioned space.

4 . The controller of claim 1 , wherein the computer executable instructions, when executed, are configured to cause the processing circuitry to operate the modulating furnace such that an operating parameter of the modulating furnace reaches an upper threshold value in the quick heat operating mode.

5 . The controller of claim 1 , wherein the number of heating cycles comprises a number of consecutive modulating heat cycles completed by the modulating furnace without operation in the quick heat operating mode.

6 . A heating, ventilation, and air conditioning (HVAC) system, comprising:

a furnace configured to operate in a modulating heat operating mode and in a quick heat operating mode; and

a control system comprising control circuitry configured to:

receive a user selection of the quick heat operating mode via a user interface;

initiate operation of the furnace in the quick heat operating mode based on receipt of the user selection;

operate the furnace in the quick heat operating mode for a threshold time period;

in response to lapse of the threshold time period, transition operation of the furnace from the quick heat operating mode to the modulating heat operating mode; and

during operation of the furnace in the modulating heat operating mode modulate an operating capacity of the furnace based on a value of a temperature difference between a set point temperature and a measured temperature,

wherein the control circuitry is configured to:

receive a call for heating, wherein the call for heating is indicative of the user selection of the quick heat operating mode; and

associate the call for heating with a quick heat cycle based receipt of the call for heating indicative of the user selection of the quick heat operating mode, receive an additional call for heating;

determine a number of heating cycles completed by the furnace since receipt of a previous call for heating associated with the quick heat cycle;

in response to a determination that the number of heating cycles meets or exceeds a threshold number of cycles, associate the additional call for heating with the quick heat cycle; and

operate the furnace in the quick heat operating mode for the threshold time period in response to the additional call for heating being associated with the quick heat cycle.

7 . The HVAC system of claim 6 , wherein the control circuitry is configured to:

operate the furnace at a full capacity in the quick heat operating mode.

8 . The HVAC system of claim 6 , wherein the control circuitry is configured to:

transition operation of the furnace from the quick heat operating mode to the modulating heat operating mode based on a determination that the measured temperature is less than the set point temperature.

9 . The HV AC system of claim 6 , wherein the control circuitry is configured to:

suspend operation of the furnace based on a determination that the measured temperature reaches the set point temperature prior to lapse of the threshold time period.

10 . The HVAC system of claim 6 , wherein the control system comprises a memory, and the control circuitry is configured to:

store a first value of the threshold time period in the memory based on a first user input received by the control system;

store a second value of the threshold number of cycles in the memory based on a second user input received by the control system; or both.

11 . The HVAC system of claim 10 , wherein the control system is configured to receive the first user input, the second user input, or both via the user interface, and the control system comprises a thermostat comprising the user interface.

12 . The HVAC system of claim 10 , wherein the control system is configured to receive the user selection, the first user input, the second user input, or a combination thereof via a mobile device.

13 . A control system for a heating, ventilation, and air conditioning (HVAC) system, comprising: processing circuitry; and a tangible, non-transitory, computer-readable medium comprising instructions stored thereon, wherein the instructions, when executed, cause the processing circuitry to:

receive a call for heating indicative of a user selection of a quick heat mode;

associate the call for heating with a quick heat cycle in response to receipt of the call for heating indicative of the user selection of the quick heat mode;

operate a furnace of the HVAC system in a quick heat operating mode in response to the call for heating being associated with the quick heat cycle;

subsequent to lapse of a threshold time period associated with the quick heat operating mode, transition operation of the furnace from the quick heat operating mode to a modulating heat operating mode; and

operate the furnace in a modulating heat operating mode to modulate an operating capacity of the furnace based on a value of a temperature difference between a set point temperature of a conditioned space and a measured temperature of the conditioned space, wherein the instructions, when executed, cause the processing circuitry to initiate operation of the furnace in the quick heat operating mode in response to a determination that a number of heating cycles completed by the furnace since a last heating cycle associated with the quick heat cycle exceeds a threshold number of cycles.

14 . The control system of claim 13 , wherein the instructions, when executed, cause the processing circuitry to:

operate the furnace of the HVAC system at a predefined upper threshold capacity in the quick heat operating mode.

15 . The control system of claim 13 , wherein the instructions, when executed, cause the processing circuitry to:

operate a draft inducer blower of the furnace to draw exhaust gases through a heat exchanger of the furnace at a first upper threshold flow rate in the quick heat operating mode;

operate a modulating valve of the furnace to direct fuel to a burner of the furnace at a second upper threshold flow rate in the quick heat operating mode; or both.