Combination radiant and forced air climate control system

• US 6,575,233 B1
• Filed: 01/25/2001
• Issued: 06/10/2003
• Est. Priority Date: 01/25/2001
• Status: Expired due to Fees

• Current Assignee: Mark J. Krumnow
• Original Assignee: Mark J. Krumnow
• Inventors: Krumnow, Mark J.
• Primary Examiner(s): CIRIC, LJILJANA V
• Application Number:
  US09/769,860
• Time in Patent Office: 866 Days
• Field of Search: 165/205, 165/208, 165/209, 165/267, 165/268, 165/217, 165/223, 165/212, 236/49.3, 236/1.R, 236/1.B, 236/1.C, 236/91.R, 236/91.C, 236/46.R, 236/37, 236/36, 236/78.B, 236/91.F, 236/10, 236/11, 236/9.R, 236/9.A, 454/256, 454/229, 454/258, 237/2.R, 237/2.A, 237/8.R, 700/276, 700/277, 700/299, 700/300, 340/500, 340/501, 340/505
• US Class Current: 165/208
• CPC Class Codes: G05D 27/02 characterised by the use of electric means

Abstract

A method utilizing a controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand signals and cooling demand signals from a plurality of zone thermostats positioned throughout the residence. Upon receiving a heating demand signal, the controller operates the primary heat source to provide heat to the zone issuing the heating demand signal. The primary heat source is a radiant heating system. The controller determines whether the primary heat source satisfies the heating demand signal within a maximum heating period. If the heating demand is not satisfied within this period, the controller activates the secondary heat source to supplement the heat being supplied by the primary heat source. The secondary heat source is a forced air HVAC system which also includes the cooling unit.

Claims

1. A method of controlling operation of a zoned climate control system having a primary radiant heating system and a secondary forced air heating system, the zoned climate control system having a plurality of individual zones each having a zone thermostat, the method comprising the steps of:

monitoring for the generation of a heating demand signal from any one of the zone thermostats;

upon generation of a heating demand signal from any one of the zone thermostats, opening a zone valve for the individual zone generating the heating demand signal to provide heat from the primary radiant heating system to the individual zone generating the heating demand signal;

monitoring the duration of time that heat is supplied to the individual zone demanding heat by the primary radiant heating system;

comparing the duration of time that heat is supplied from the primary radiant heating system to the individual zone demanding heat to a predetermined maximum heating period;

opening a zone damper for the individual zone generating the heating demand signal to provide heat from the secondary forced air heating system to the individual zone demanding heat when the duration of time that heat is supplied to the individual zone demanding heat by the primary radiant heating system exceeds the maximum heating period.

2. The method of claim 1 further comprising the steps of:

monitoring for the generation of a humidity signal from any one of the plurality of individual zones, the humidity signal indicating a demand for humidity; and

upon generation of a humidity signal from any one of the plurality of individual zones, activating a humidifier to supply humidity to at least the individual zone generating the humidity signal.

3. The method of claim 2 wherein after receiving the humidity signal, the humidifier is activated only upon activation of the secondary forced air heating system.

4. The method of claim 3 further comprising the steps of:

monitoring the duration of time from receipt of the humidity signal before activation of the secondary forced air system; and

activating the humidifier when the duration of time from the receipt of the humidity signal exceeds a maximum time limit, such that humidity is supplied to the zone generating the humidity signal.

5. The method of claim 4 further comprising the steps of:

monitoring the amount of time that the humidifier is activated; and

terminating the operation of the humidifier when the humidifier is continuously operating for greater than a predetermined humidity activation period.

6. The method of claim 1 wherein the step of providing heat from the secondary forced air heating system includes activating the forced air heating system and opening the zone damper for the individual zone generating the heating demand signal and closing the zone damper for each of the other individual zones not generating a heating demand signal.

7. The method of claim 1 further comprising the step of providing a single controller coupled to the primary radiant heating system, the secondary forced air heating system, and the zone thermostats, the controller being operable to control the operation of the primary radiant heating system including the plurality of zone valves and the secondary forced air heating system including the plurality of zone dampers.

8. The method of claim 1 further comprising the step of selecting the predetermined maximum heating period.

9. A method of controlling the operation of a zoned climate control system having a primary heat source and a secondary heat source, the zoned climate control system having a plurality of individual zones each having a zone thermostat, the method comprising the steps of:

monitoring for the generation of a heating demand signal from any one of the zone thermostats;

providing heat from the primary heat source to the individual zone upon generation of the heating demand signal from the individual zone;

monitoring the duration of time that heat is supplied to the individual zone demanding heat by the primary heat source;

comparing the duration of time that heat is supplied from the primary heat source to the individual zone demanding heat to a predetermined maximum heating period;

providing heat from the secondary heat source to the individual zone demanding heat when the duration of time that heat is supplied to the zone by the primary heat source exceeds the maximum heating period;

designating one of the individual zones as a priority heating zone;

supplying heat from the primary heat source to only the priority zone when the primary zone demands heat;

monitoring the continuous amount of time that heat is supplied to the priority zone by the primary heat source;

comparing the continuous amount of time that heat is supplied to the priority zone to a maximum priority heating period; and

deactivating the priority function of the priority zone if the priority time has exceed a maximum amount of time.

10. A method of controlling the operation of a zoned climate control system having a primary heat source and a secondary heat source, the zoned climate control system having a plurality of individual zones each having a zone thermostat, the method comprising the steps of:

monitoring for the generation of a heating demand signal from any one of the zone thermostats;

providing heat from the primary heat source to the individual zone upon generation of the heating demand signal from the individual zone;

monitoring the duration of time that heat is supplied to the individual zone demanding heat by the primary heat source;

comparing the duration of time that heat is supplied from the primary heat source to the individual zone demanding heat to a predetermined maximum heating period;

providing heat from the secondary heat source to the individual zone demanding heat when the duration of time that heat is supplied to the zone by the primary heat source exceeds the maximum heating period;

removing the heat supplied to the zone demanding heat from the secondary heat source after termination of the heating demand signal from the zone, wherein upon the subsequent generation of the heating demand signal from the zone, heat is initially supplied to the zone from only the primary heat source.

11. A method of controlling the operation of a zoned climate control system having a primary radiant heating system, a secondary forced air heating system and a cooling unit, the zoned climate control system having a plurality of individual zones, each individual zone having a thermostat that generates a heating demand signal and a cooling demand signal based upon user selectable temperature parameters, the method comprising the steps of:

providing at least one controller for the zoned climate control system, the controller being operatively connected to the primary radiant heating system, the secondary forced air heating system and the cooling unit;

monitoring for the generation of a heating demand signal or a cooling demand signal from the zone thermostats of each individual zone;

providing heat from the primary radiant heating system to each individual zone separately upon the controller receiving the heating demand signal from the individual zone;

monitoring the duration of time that heat is supplied to the individual zone generating the heating demand signal by the primary radiant heating system;

comparing the duration of time that heat is supplied to the heating zone generating the heating demand signal to a predetermined maximum heating period; and

providing heat from the secondary forced air heating system to the individual zone generating the heating demand signal when the continuous amount of time that heat is supplied to the individual zone by the primary radiant heating system exceeds the maximum heating period.

12. The method of claim 11 wherein the secondary heat source and the cooling unit are a forced air HVAC system having a plurality of zone dampers that control the flow of heated or cooled air from the forced air HVAC system to each of the individual zones.

13. The method of claim 12 wherein the step of providing heat from the secondary heat source includes activating the forced air HVAC system and opening the damper for the individual zone generating a heating demand signal.

14. The method of claim 12 further comprising the steps of:

monitoring for the generation of a humidity signal from one of the individual zones, the humidity signal indicating a demand for humidity; and

activating a humidifier contained in the forced air HVAC system to supply humidity to at least the zone generating the humidity signal.

15. The method of claim 14 wherein after receiving the humidity signal from one of the individual zones, the activation of the humidifier is delayed until subsequent activation of the forced air heating system.

16. The method of claim 15 further comprising the steps of:

monitoring the amount of time from receipt of the humidity signal until the subsequent activation of the forced air HVAC system; and

activating the humidifier when the monitored amount of time exceeds a maximum time limit, such that humidity is supplied to the individual zone of the climate control system generating the humidity signal.

17. The method of claim 11 further comprising the steps of:

activating the cooling unit upon the controller receiving a demand for cooling from the one of the zones; and

opening the damper for the individual zone to supply cooled air from the cooling unit to the zone generating the cooling demand signal while closing the dampers for each of the other individual zones.

18. The method of claim 17 further comprising the steps of:

monitoring the duration of time that cooled air is supplied to the individual zone generating the cooling demand signal by the cooling unit;

comparing the duration of time that cooled air is supplied to the individual zone generating the cooling demand signal to a predetermined maximum cooling period; and

activating a secondary coil of the cooling unit when the continuous amount of time that cooled air is supplied to the individual zone generating the cooling demand signal by the cooling unit exceeds a maximum cooling period.

19. The method of claim 18 wherein the cooling unit includes a primary cooling coil and a secondary cooling coil.

20. The method of claim 11 further comprising the steps of:

determining whether the controller is currently activating the cooling unit upon receipt of a demand for heat; and

preventing the supply of heat to any of the zones when the controller is currently activating the cooling unit.

21. The method of claim 11 further comprising the steps of:

determining whether the controller is providing heat to any of the individual zones upon receipt of a demand for cooling from any of the zones; and

preventing the operation of the cooling unit when the controller is currently providing heat to one of the zones.

22. A method of controlling the operation of a zoned climate control system having a primary heat source, a secondary heat source and a cooling unit, the zoned climate control system having a plurality of individual zones, each individual zone having a thermostat that generates a heating demand signal and a cooling demand signal based upon user selectable temperature parameters, the method comprising the steps of:

providing at least one controller for the zoned climate control system, the controller being operatively connected to the primary heat source, the secondary heat source and the cooling unit;

providing heat from the primary heat source to each individual zone separately upon the controller receiving a demand for heat from the individual zone;

monitoring the duration of time that heat is supplied to each individual zone by the primary heat source;

comparing the duration of time that heat is supplied to each individual zone to a predetermined maximum heating period;

providing heat from the secondary heat source to each individual zone when the continuous amount of time that heat is supplied to the zone by the primary heat source exceeds the maximum heating period; and

interconnecting a plurality of controllers, each controller being operable to control the supply of heat from the primary heat source and the secondary heat source to a set of the plurality of zones, wherein the interconnected controllers control the supply of heat to the plurality of zones;

designating one of the control units as a master controller, the master controller controlling the supply of heat to a priority zone, wherein when the master controller is supplying heat to the priority zone, the interconnected controllers prevent heat from being supplied to the remaining zones.

23. The method of claim 22 further comprising the steps of:

monitoring the continuous amount of time that heat is supplied from the primary heat source to the priority zone by the master controller;

comparing the continuous amount of time that heat is supplied to the priority zone to a maximum priority heating period; and

deactivating the priority function of the priority zone if the priority time has exceed a maximum amount of time.