Combination radiant and forced air climate control system

• US 6,957,696 B1
• Filed: 04/30/2003
• Issued: 10/25/2005
• 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:
  US10/426,572
• Time in Patent Office: 909 Days
• Field of Search: 165/205, 165/208, 165/209, 165/212, 165/240, 165/267, 165/268, 165/217, 165/223, 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, 236/5.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 and 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 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.

Claims

1. 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 of 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;

designating in the controller whether each zone is a radiant-only zone or a forced air and radiant zone;

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

determining whether the controller is currently activating the cooling unit upon receipt of a demand for heat from one of the individual zones;

preventing the supply of heat to any of the zones designated as a forced air and radiant zone when the controller is currently activating the cooling unit; and

allowing the supply of heat to any of the zones designated as a radiant-only zone when the controller is currently activating the cooling unit.

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

determining whether the heating demand signal is being generated from one of the zones designated as a forced air and radiant zone;

providing heat from the primary radiant heating system to the individual zone upon the controller receiving a demand for heat from the individual zone;

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 to a predetermined maximum heating period; and

providing heat from the secondary forced air heating system to the individual zone only if the individual zone has been designated as a forced air and radiant zone 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.

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

interconnecting a plurality of controllers, each controller being operable to control the supply of heat from the primary radiant heating system and the secondary forced air heating system 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.

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

monitoring the continuous amount of time that heat is supplied from the primary radiant heating system 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.

5. The method of claim 1 wherein the secondary forced air heating system 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 zones.

6. The method of claim 5 wherein the step of providing heat from the secondary forced air heating system includes activating the forced air HVAC system and opening the damper for the individual zone generating a heating demand signal.

7. The method of claim 6 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.

8. The method of claim 5 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 while closing the dampers for each of the other zones.

9. A method of controlling 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 having a zone thermostat, the method comprising the steps of:

providing at least one controller for the zoned climate control system, and

designating in the controller whether each zone is a radiant-only zone or a forced air and radiant zone;

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 or circulator 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 only if the individual zone is designated as a forced air and radiant zone 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.

10. The method of claim 9 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.

11. The method of claim 9 further comprising the steps of:

monitoring for the generation of a humidistat, humidity signal by the humidity signal indicating a demand for humidity; and

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

12. The method of claim 9 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.

13. The method of claim 9 further comprising the steps of:

activating a cooling unit upon the controller receiving a demand for cooling from one of the individual zones designated as a forced air and radiant zone; and

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

14. The method of claim 13 further comprising the steps of:

determining whether the controller is currently activating the cooling unit upon receipt of a demand for heat from one of the individual zones;

preventing the supply of heat to any of the zones designated as a forced air and radiant zone when the controller is currently activating the cooling unit;

allowing the supply of heat from the primary radiant heating system to any of the zones designated as a radiant only zone when the controller is currently activating the cooling unit.