81. Using rubber couplings and hose clamps to connect intake andexhaust tubing.2. Connect intake tubing to intake tube on power unit.3. Connect mufflers and exhaust tubing to upper exhaust tubes onthe power unit.4. Make sure all tubing connections are air tight.5. The exhaust should not be vented into a wall, ceiling or concealedspace in the house. Exterior vented exhaust lines should be term-inated using Model 393 Wall Caps or appropriate louveredexhaust vents.POWER UNIT INSTALLATIONLOWERSLOT11 1/ 2"MOUNTINGBRACKETTOP KEYHOLE SLOT"E"INTAKEFIGURE 26 FIGURE 27TUBING CONNECTIONS AT POWER UNITMOUNTING See Figure 25. Also refer to page 3.1. Locate power unit within six feet of a grounded electrical outlet.2. Drill 3⁄16" diameter pilot holes for the two (2) mounting screws in a wallstud or strong support. See Figure 26.3. Tighten mounting screws. Leave approximately 1⁄8" to 3⁄16" clearancebetween head of screw and wall.4. Hang power unit onto mounting screws. Make sure top keyhole slotand lower slot in mounting bracket are engaged behind mountingscrews. Pull down to secure.5. Remove lower canister from power unit. Make sure bag is properlyinstalled in power unit. Remove extra bag and homeowner’s manual.Securely replace canister.WIRING See Figure 27.Grounding Instructions – This appliance must be grounded. If itshould malfunction or break down, grounding provides a path of leastresistance for electric current, to reduce the risk of electric shock. Thisappliance is equipped with a cord having an equipment-groundingconductor and grounding plug. The plug must be plugged into anappropriate outlet that is properly installed and grounded in accordancewith all local codes and ordinances.Danger – Improper connection of the equipment-groundingconductor can result in a risk of electric shock. Check with a qualifiedelectrician or service person if you are in doubt as to whether the outletis properly grounded. Do not modify the plug provided with theappliance – if it will not fit the outlet, have a proper outlet installed by aqualified electrician.This appliance is for use on a nominal 120 volt circuit and has agrounding plug. Make sure that the appliance is connected to an outlethaving the same configuration as the plug. No adapter should be usedwith this appliance.1. Connect low voltage wire (18 gauge, 2-conductor, Model 376) tocrimp connectors located on outside of the power unit.2. The power unit is equipped with a six foot grounded cord.Plug cord into 120 volt grounded receptacle.NOTE: POWER UNITCONTROL LEADS ARE TOBE CONNECTED TO INLETLEADS WITH SUITABLEWIRE CONNECTORS.WIRINGPOWERCORDPOWER UNITCONTROL LEADSINLETLEADSINLET INLET INLETTOOTHERINLETSMODEL 376 (18/2) WIRE120VAC ELECTRICALOUTLET POWERUNITDIMENSIONAL CHARTMODELSDIMENSION CV350 CV353 CV450 CV553A 301⁄2" 321⁄4" 361⁄4" 321⁄4"B 55⁄8" 73⁄4" 101⁄2" 73⁄4"C 6" 67⁄8" 12" 67⁄8"D 135⁄8" 135⁄8" 153⁄4" 135⁄8"E 61⁄8" 61⁄8" 61⁄2" 61⁄8"FIGURE 25MINIMUM WALL CLEARANCE DIMENSIONSEXHAUSTINTAKETOP VIEW“D”12" 18"12" MINIMUM TO CEILINGFRONT VIEWINTAKEEXHAUST18" MINIMUM ABOVE FLOOR“A”OVERALLHEIGHT“B”TOP OFUNIT TOTOPKEYHOLESLOT “C”