Josh Feria
Josh Feria voted up Muddassar Memon's answer
Before installing a downflow electric furnace always keep in mind that incorrect installation, adjustment, alteration may result in an explosion. First of all inspect the equipment, start of by disconnecting the power to the furnace after that remove the furnace front access doors, then remove furnace inner sheet metal shield. Now remove the knockouts from … Read more
Josh Feria
Josh Feria voted up Farshid Khan's answer

Electric furnaces can be installed for vertical, horizontal or down flow operation. When installed horizontally, the front door panel must be in the vertical position so that the motor bearings are in their required position. In vertical down flow installations, use only "L" or "T" shaped plenum with no openings or registers directly below furnace.

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