Types of Gas Furnace Pressure Switches
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Types of Gas Furnace Pressure Switches The furnace pressure switch has a slightly different design depending on if it is used in a conventional furnace or a high efficiency condensing furnace. If used with a single stage conventional furnace the pressure switch will have one hose leading to the body of the draft inducer fan. Single stage condensing furnaces will have will have two hoses on the pressure switch, one for sensing the pressure at the draft inducer / burner enclosure and the other for sensing proper venting pressure at the condensate collector box. Two stage furnaces may have two pressure switches and modulating furnaces may have three pressure switches. |