Installation Requirements1. Unit should be installed after the air handler in theHVaC system.2. The duct work around the installation area shouldbe clean and dry to insure proper adhesion of thegasket materials and any tape used.3. an approximate 3.5” (8.89 cm) opening will needto be cut into the existing duct work to install theunit properly.RECOMMENDED INSTALLATION TOOLSINSTALLATION REquIREMENTS3 1/2” Hole Sawfor wood or metal(recommended)Drill/Power Driver Phillips Screwdriver 3/8” Drill Bit(if installing into fiberglassducting with toggle bolts)You may also need:Utility Knife Tin Snips(for metal ductwork)5Electrical Requirements for 120 volt installation only• To use a 120 volt plug, be sure to locate the unit within 6 ft. of a standard 120 voltgrounded outlet. long term use of an extension cord is not recommended due tosafety considerations.• Install a US “B” Ua approved plug onto the blunt cord.Hardwiring Requirements (All units)• Permanent wiring of the unit into your HVAC system, or installationsusing a 120/220 volt, should be done by a licensed HVAC installer orelectrical contractor only.wARNINg: CHECK SPECIFICATIONS ON LABELINg BEFORE INSTALLINg.uNIT IS EITHER: 120V, 220V, or DEPENDINg ON MODEL 100-240V.For 110 volt units: Black = l1, white = Neutral, Green = GroundFor 220 volt units: Black = l1, white = l2, Green = GroundFor International units: Brown = l1, Blue = l2, Green w/yellow stripe = GroundAirHandlerMin. 8” x 8”Max. 6 ft.11/32” Open-End Wrench1/4” Nut Driver Bit