Should it be necessary to lay the unit down, lay it on its side <br /><br /> Lay it on the side opposite the hinges (on top and bottom freezer models) so the door will remain closed. <br /><br /> Side by side models should be placed on the freezer side.
In British English, a furnace is an industrial furnace used for many things, such as the extraction of metal from ore (smelting) or in oil refineries and other chemical plants, for example as the heat source for fractional distillation columns.he furnace transfers heat to the living space of the building through an intermediary distribution system. If the distribution is through hot water (or other fluid) or through steam, then the furnace is more commonly called a boiler.
Report Abuse. The plenum is the duct right on top of the furnace. A furnace has 2 ducts. Cold air is sucked-in through the return duct. The air is heated in the furnace and pushed through the plenum, which is the duct on top of furnace.Tam22 Â· 7 years ago. Thumbs up.he plenum is the sheet metal box on top of the furnace that connects the furnace to the rest of the duct work.