Combustion air damper with Heat Limit Switch
Hoyme Manufacturing Inc. Special Note: Circuits are colored for
and are not necessarily those found in actual installations. Combustion Air Damper Wires, however, are
colored as shown.
A Domestic Hot Water tank using a combustion
air supply duct.
Heat Limit Switch (HLS-1100) that opens on temperature rise.
Combustion Air Damper
connected in series to a continuous 24Vac power supply and a Heat Limit Switch. Heat Limit Switch attached to Hot water tank flue stack. Combustion air damper opens with
the sensing of a temperature rise of 130°F and closes when cooled down to 125°F.
1643-ld - Printed in
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