Apparatus for monitoring operation of heating and cooling systems
First Claim
1. Apparatus for on-site monitoring of a heating and/or cooling system, said apparatus comprising:
- first processing means for processing data relating to operation of the system in accordance with a first set of program instructions and for transmitting coded data signals indicative of selected system operating conditions; and
a portable display module having;
second processing means for receiving and processing said coded data signals in accordance with a second set of program instructions and for providing a human detectable output indicating said selected system operating conditions, said second processing means being operable to not transmit any signals to said first processing means so that there is only one-way communication between said first processing means and said second processing means; and
connecting means for electrically connecting said module to said first processing means.
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Accused Products
Abstract
Apparatus is provided for monitoring operation of a heating and/or cooling system. The apparatus includes a programmed first processor for processing data relating to selected system operating conditions and for transmitting coded data signals indicative thereof, and a portable display module having an electrical conduit for electrically connecting the module to the first processor to provide one-way electrical communication therebetween. The module further includes a programmed second processor for processing the data signals transmitted by the first processor and a display device which is controlled by the second processor to provide a human readable indication of selected system operating conditions, including the current mode of operation of the system and any detected failure conditions. The first processor includes a memory for storing past system failure conditions. The apparatus includes a memory operable switch for inputting a signal to the first processor. In response to the input signal, the first processor transmits a coded data signal indicative of the last known system failure condition, even if such failure con&ion is no longer present.
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Citations
20 Claims
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1. Apparatus for on-site monitoring of a heating and/or cooling system, said apparatus comprising:
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first processing means for processing data relating to operation of the system in accordance with a first set of program instructions and for transmitting coded data signals indicative of selected system operating conditions; and a portable display module having; second processing means for receiving and processing said coded data signals in accordance with a second set of program instructions and for providing a human detectable output indicating said selected system operating conditions, said second processing means being operable to not transmit any signals to said first processing means so that there is only one-way communication between said first processing means and said second processing means; and connecting means for electrically connecting said module to said first processing means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Apparatus for on-site monitoring of a gas heating system having automatic ignition control, said apparatus comprising:
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first processing means electrically coupled to the system ignition control for processing information relating to selected ignition control conditions in accordance with a first set of program instructions and for transmitting coded data signals indicative thereof; and a portable display module having; second processing means for processing said coded data signals in accordance with a second set of program instructions and for providing a human detectable output indicating selected ignition control conditions, said second processing means being operable to not transmit any signals to said first processing means so that there is only one-way communication between said first processing means and said second processing means. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. Portable apparatus for on-site monitoring of a heating and/or cooling system of the type which is programmed to transmit coded data signals indicative of selected system operating conditions, said apparatus comprising:
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processing means for processing said coded data signals transmitted hy the system in accordance with a predetermined set of program instructions and for providing a human detectable output indicating selected system operating conditions, said processing means being operable to not transmit any signals to the system so that there is only one-way communication between said processing means and the system; and connecting means for electrically connecting said processing means to the system. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification