Building controller utilizing multiple sensors and a programmable schedule
An HVAC system may include a building controller and one or more sensors. The building controller may be configured to receive one or more temperature readings from the one or more sensors located in a building and determine an extremum temperature reading. The building controller may be configured to control one or more components of an HVAC system of a building to control the extremum temperature in accordance with a programmed temperature set point.
1. A building controller for controlling an HVAC system of a building, the building controller comprising:
a memory;
a controller operatively coupled to the memory, the controller configured to:
receive a temperature reading from a first temperature sensor located within the building;
cause the building controller to provide one or more control signals to the HVAC system of the building to control the temperature reading from the first temperature sensor in accordance with a programmed temperature set point;
repeatedly determine an extremum temperature reading from an extremum temperature sensor; and
cause the building controller to provide one or more control signals to the HVAC system of the building to control the extremum temperature reading in accordance with an extremum temperature set point, wherein the extremum temperature set point comprises one of a heat set point that is lower than the programmed temperature set point or a cool set point that is higher than the programmed temperature set point.
2. The building controller of claim 1 , wherein the extremum temperature reading is a minimum temperature reading from temperature readings of two or more temperature sensors, and the controller is configured to provide one or more control signals to the HVAC system of the building to control the minimum temperature reading in a heating mode in accordance with the extremum temperature set point.
3. The building controller of claim 2 , wherein one of the two or more temperature sensors are located within a housing of the building controller.
4. The building controller of claim 3 , wherein the building controller comprises a wall mountable thermostat.
5. The building controller of claim 2 , wherein the two or more temperature sensors are located within the building and include at least two remote temperature sensors located remotely from the building controller.
6. The building controller of claim 1 , wherein the extremum temperature reading is a maximum temperature reading from temperature readings of two or more temperature sensors, and the controller is configured to provide one or more control signals to the HVAC system of the building to control the maximum temperature reading in a cooling mode in accordance with the extremum temperature set point.
7. The building controller of claim 1 , wherein the controller is configured to receive a temperature reading from the extremum temperature sensor via a wireless receiver.
8. The building controller of claim 1 , wherein the controller is configured to receive a temperature reading via two or more field wires coupled to the extremum temperature sensor.
9. The building controller of claim 1 , wherein the programmed temperature set point is an energy saving set point.
10. A method for controlling an HVAC system of a building, the method comprising:
receiving a temperature reading from a first temperature sensor within the building;
controlling the HVAC system of the building in a manner that controls the temperature reading from the first temperature sensor in accordance with a first energy saving temperature set point;
determining when the temperature reading from a second temperature sensor within the building satisfies a predetermined condition;
controlling the HVAC system of the building in a manner that controls the temperature reading from the second in accordance with a second energy saving temperature set point during the time that the temperature reading from the second temperature sensor continues to satisfy the predetermined condition;
returning to controlling the HVAC system of the building in a manner that controls the temperature reading from the first temperature sensor in accordance with the first energy saving temperature set point when the temperature reading from the second temperature sensor no longer satisfies the predetermined condition.
11. The method of claim 10 , wherein the predetermined condition is satisfied when the temperature reading from the second temperature sensor falls below a minimum temperature threshold.
12. The method of claim 11 , wherein the second energy saving temperature set point is higher than the first energy saving temperature set point.
13. The method of claim 10 , wherein the predetermined condition is satisfied when the temperature reading from the second temperature sensor exceeds a maximum temperature threshold.
14. The method of claim 13 , wherein the second energy saving temperature set point is lower than the first energy saving temperature set point.
15. The method of claim 10 , further comprising:
controlling the HVAC system of the building in a manner that controls the temperature reading from the first temperature sensor in accordance with a comfort temperature set point; and
prohibiting controlling the HVAC system of the building in a manner that controls the temperature reading from the second temperature sensor in accordance with the comfort temperature set point.
16. The method of claim 15 , wherein the second temperature sensor is located in a space adjacent a water pipe.