Coolant and potable water heater
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United States of America Patent
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Jul 22, 2014
Issued Date -
N/A
app pub date -
Nov 13, 2008
filing date -
Nov 13, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A coolant heater having a coolant tank and a burner tube within the coolant tank is used for marine and motor coach installations. The burner tube is offset sidewise from the center line of the coolant tank to allow an exhaust manifold to be positioned within the coolant tank and beside the burner tube which allows a predictable coolant movement to more evenly distribute the heat throughout the coolant. An exhaust manifold is positioned within the coolant tank in the space obtained by the burner tube offset which allows an “up” or “down” exhaust duct configuration depending on the heater installation. An expansion tank connected to the coolant tank has a level switch located within the expansion tank and a pump is operably connected to the expansion tank and to the level switch. The pump terminates operation when the level switch indicates low coolant in the expansion tank.
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