Methods and system for demand-based control of a combination boiler

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United States of America Patent

PATENT NO 10612795
APP PUB NO 20180073748A1
SERIAL NO

15265029

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A combination boiler provides heated water to a boiler loop and heated domestic hot water (DHW) to a DHW loop. A primary heat exchanger is connected to the boiler loop. A burner provides heat to the primary heat exchanger and an input fan supplies a fuel and air mixture to the burner. A secondary heat exchanger transfers heat energy from the boiler loop to a domestic water loop. A controller determines a boiler loop flow rate. The controller measures an input temperature of the boiler loop, an output temperature of the boiler loop, and a DHW output temperature of the domestic water loop. The controller determines a DHW input temperature and estimates a DHW flow rate. The input fan speed is initiated or operated according to a required heat output of the burner corresponding to the DHW flow rate.

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Patent Owner(s)

Patent OwnerAddress
LOCHINVAR LLC300 MADDOX SIMPSON PARKWAY LEBANON TN 37090

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gagne, Curtis George Smyrna, US 8 24

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