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1032 Duct Arrangement Allows Reverse Flow - Heating - Furnaces and Boilers
 
1032 Duct Arrangement Allows Reverse Flow - Heating - Furnaces and Boilers -

Image Text: Cold air return > fan > existing down flow furnace (oil) > reverse flow of heat > add-on wood furnace > hot air plenum > heat > if the blower in the existing down flow furnace stops working, heat cannot rise out of the supply ductwork by natural convection > it flows backwards through the cold air return of the down flow furnace > this can damage the blower motor and belt as well as the furnace wiring > below floor ductwork

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HEATING, Furnaces Gas and Oil, Heat Transfer, Gas Piping and Meters, Combustion Air, Gas Burners, Heat Exchangers, Furnace Cabinets, Fan/Limit Switches, Thermostats, Venting Gas Furnaces, Distribution System, Blowers, Air Filters and Cleaners, Humidifiers, Duct Systems, Registers and Grills, Mid Efficiency Furnaces, Condensing Furnaces, Gravity Furnaces, Combination Furnaces, Oil Furnaces, , Hot Water Boilers (Hydronic Heating), Heat Exchangers, Controls, Distribution Systems, Pulse Combustion, Chimneys, Masonry Chimneys, Metal Chimneys or Vents, Wood Heating Systems, Furnaces and Boilers, Wood Stove (Space Heaters), Wood Burning Fireplaces, Steam Heating Systems, Common Steam Systems, Steam Controls, Components and Problems, Electric Heating Systems, Space Heaters, Electric Furnaces, Electric Boilers, Radiant Heating, Wall and Floor Furnaces, Room Heaters and Gas Fireplaces, Wall Furnaces, Floor Furnaces, Room Heaters, Gas Fireplaces and Gas Logs

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