System for monitoring a combustion apparatus
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United States of America Patent
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Nov 5, 1996
Issued Date -
N/A
app pub date -
Feb 14, 1994
filing date -
Feb 1, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides a novel system for monitoring a predetermined operating condition of a heating apparatus, such as a cumulative total time period of combustion and a combustion frequency, and informing a user of a timing of maintenance. In a hot water heater (1) according to the invention, a controller (208) outputs a maintenance requirement signal to a display (210) and a maintenance alarm to inform the user of a timing of maintenance when a combustion frequency nx becomes equal to or greater than a first reference value nr1 or when a cumulative total time period of combustion tx becomes equal to or greater than a second reference value tr1. This allows the user to perform maintenance without delay and prevents troubles or abnormalities from being developed in the hot water heater (1).
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