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AssigneeCarrier Corporation
InventorKevin D. Thompson
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In a heating system containing twinned furnaces capable of independently operating at multiple levels, a method for providing multiple heating modes to satisfy a required heating load during a given cycle, there being some total number of heating modes, wherein each heating mode may be activated for a time interval whose length is a function of furnace activity during the most recent previous cycle. The method comprises the steps of: determining the existence of a heating load to be satisfied; operating both furnaces independently at levels appropriate to a first heating mode for a first time interval that does not exceed a first predetermined limit; for each subsequent heating mode up to a number of one less than the total number of heating modes, operating both furnaces independently at levels appropriate to each subsequent heating mode for a subsequent time interval that does not exceed a subsequent predetermined limit; and operating both furnaces independently at levels appropriate to a final heating mode for a final time interval until the heating load is satisfied; calculating a thermal load requirement, as a function of all of the time intervals; and predetermining all of the predetermined time intervals for a next cycle, from the calculated thermal load requirement.
In a heating system containing twinned furnaces capable of independently operating at multiple levels, a method for providing multiple heating modes to satisfy a required heating load during a given cycle, there being some total number of heating modes, wherein each heating mode may be activated for a time interval whose length is a function of furnace activity during a most recent previous cycle, comprising the steps of:
A method for providing a two stage heating cycle using twinned single stage furnaces, comprising a first and a second furnace, as a function of a most recent previous heating cycle comprising the steps of:
A method for providing three heating modes using twinned multi-stage furnaces, comprising a first and a second furnace, as a function of a most recent previous heating cycle comprising the steps of:
Dependencies are inferred from the claim text.