3• Locate the power unit away from the general living area in anaccessible location for emptying the lower dirt cannister andperiodically cleaning the filter.• When planning, remember the power unit is equipped withan inlet to service a garage, basement, utility room, etc.,wherever it is located.• Locate the power unit within six feet of a grounded electricaloutlet. The power unit requires a 120vAC power source.• Do not locate the power unit close to a source of extremeheat (i.e., water heater) or in an area with a high ambienttemperature (i.e., attic, furnace room).• If the power unit is located in a closet or a small utility room,make sure the area is well-ventilated (i.e., with door louvers).• Exhausting the power unit to the outside is recommended foroptimal performance but is not required. The exhaust shouldnot be vented into a wall, a ceiling or a concealed space inthe house. If the exhaust line is vented outside the home,Model 393 Wall Cap or a roof vent are recommended.WARNING: Power unit must not be mounted in a highambient temperature area such as attic, furnace room, etc.TUBING AND WALL INLET LOCATIONS1. Locate inlets on interior walls, choosing central locationswhich allow several rooms to be cleaned from a single inletusing a 30 foot long hose.2. The tubing installation should consist of a main trunk linerunning from the farthest wall inlet to the power unitlocation, with branch lines running to each additional inlet.Keep all tubing lines as straight as possible and use as fewfittings as possible. Beginning at the area farthest from thepower unit, choose a tentative inlet location. Measure 30feet from the proposed inlet location to the farthest corner ofthe rooms to be cleaned by that inlet to determine if inletlocation is proper.3. If working from blueprints (or building plans drawn at1⁄4" = 1 ft. scale), use a 71⁄2" chain as your guide todetermine inlet locations.4. Move tentative inlet location if necessary. Use the sameprocedure to determine each additional inlet location,always working toward the power unit.5. Be sure tubing will not interfere with electrical, plumbing orother mechanical installations.6. Locate inlets within six feet of an electrical receptacle toallow use of optional current-carrying hose.7. Be sure inlets will not be blocked by doors or furniture.LOCATING THE POWER UNITBuilt-In Appliances. You will oftenfind a hollow space behind built-inkitchen appliances. If this space linesup with an obstruction-free interior wallabove or a closet, this might be a keyto your installation. See Figure 5.You may also want to considerrunning exposed tubing throughcabinets or cupboards.Cold-Air Return. A cold-airreturn often provides a straightrun from basement to other levelsof the house. See Figure 6.The ductwork is easily cut foraccess. Seal around the tubewhen completing the installation.FIGURE 5FIGURE 6LOCATING ACCESS KEYS INEXISTING CONSTRUCTIONLet's say, for example, you have a two-story house and you wantto locate the power unit in the basement. If you can't find interiorwalls on both the first and second floors which line up and are freefrom obstacles. How do you get from the basement to the attic?Unless your home is a ranch-style house where a single trunkline can run directly through the attic or basement, you should firstinvestigate your house to find the key to running your tubing fromlevel to level. Look for an accessible area free from obstructionsthat will accommodate the 2" tubing.If you understand how your existing home is constructed, it canbe relatively easy to find access routes to run the tubing. Referagain to the illustration on page 2 as you consider your homeconstruction.Some of the keys you might find in your home are illustrated here.FIGURE 4Stacked Closets or LaundryChute. Many homes will havean upstairs closet locateddirectly above a downstairscloset. It is easy to run thetubing from one floor level toanother inside these stackedclosets. In these installationsthe tubing is often left exposedinside the closets. See Figure4. A laundry chute could alsoprovide access from basementto upper floors.TUBING