CA2123727A1 - Temperature Control System Having Central Control for Thermostats - Google Patents

Temperature Control System Having Central Control for Thermostats

Info

Publication number
CA2123727A1
CA2123727A1 CA2123727A CA2123727A CA2123727A1 CA 2123727 A1 CA2123727 A1 CA 2123727A1 CA 2123727 A CA2123727 A CA 2123727A CA 2123727 A CA2123727 A CA 2123727A CA 2123727 A1 CA2123727 A1 CA 2123727A1
Authority
CA
Canada
Prior art keywords
thermostat
thermostats
temperature
control unit
central control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2123727A
Other languages
French (fr)
Other versions
CA2123727C (en
Inventor
Ronald J. Liebl
Paul W. Madaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Service Co
Original Assignee
Johnson Service Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Service Co filed Critical Johnson Service Co
Publication of CA2123727A1 publication Critical patent/CA2123727A1/en
Application granted granted Critical
Publication of CA2123727C publication Critical patent/CA2123727C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
    • G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time

Abstract

Disclosed herein is a temperature control system for multi-zone temperature control with setback control. The system includes a thermostat (10) associated with each zone of a building, and a central control unit (12) which communicates with each thermostat (10) to send temperature setpoint values to each thermostat (10) for the purpose of conserving energy and reducing energy consumption during certain times of the day. Each thermostat (10) is associated with either a heating or cooling device (14), where setup temperature values are sent from the central control unit (12) to the thermostats (10) where cooling devices are used in place of heating devices. The thermostats (10) are designed to operate as stand-alone units which control the temperature within a zone based upon a temperature setpoint stored at the unit. The temperature setpoint values are replaced by the higher or lower temperature setpoint values transmitted to the thermostats by the control units during setback or setup time periods. To avoid the requirement of installing communication wires between the central control unit (12) and thermostat (10), each thermostat (10) and the central control unit (12) includes communications circuitry (30, 46) which allows the thermostats (10) and control unit (12) to communicate over the power conductors (36, 38) within the building.
CA002123727A 1993-07-12 1994-05-17 Temperature control system having central control for thermostats Expired - Fee Related CA2123727C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/090,405 US5361982A (en) 1993-07-12 1993-07-12 Temperature control system having central control for thermostats
US08/090,405 1993-07-12

Publications (2)

Publication Number Publication Date
CA2123727A1 true CA2123727A1 (en) 1995-01-13
CA2123727C CA2123727C (en) 1998-08-25

Family

ID=22222637

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002123727A Expired - Fee Related CA2123727C (en) 1993-07-12 1994-05-17 Temperature control system having central control for thermostats

Country Status (7)

Country Link
US (1) US5361982A (en)
EP (1) EP0634714B1 (en)
JP (1) JPH07145987A (en)
AU (1) AU663652B2 (en)
CA (1) CA2123727C (en)
DE (1) DE69416353T2 (en)
MX (1) MX9404360A (en)

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Also Published As

Publication number Publication date
CA2123727C (en) 1998-08-25
DE69416353D1 (en) 1999-03-18
AU6337994A (en) 1995-01-19
EP0634714B1 (en) 1999-02-03
DE69416353T2 (en) 1999-10-14
EP0634714A2 (en) 1995-01-18
EP0634714A3 (en) 1995-04-12
MX9404360A (en) 1995-01-31
JPH07145987A (en) 1995-06-06
AU663652B2 (en) 1995-10-12
US5361982A (en) 1994-11-08

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