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Installation

Installation

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Installation

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  1. Installation

  2. Indoor Unit Installation Typical Installation

  3. Indoor Unit Installation Installation Procedures Indoor Unit AdequateSupport! Buildingstructuremustbeadequatetosupporttheweight oftheunit.Failuretoensureadequatestructuralsupport couldresultinunitfallingfromitslocationwhichcould result in death, serious injury, or equipment or property-only damage. Avoidlocatingtheindoorunitwherethereturnand/orsupply airmaybeobstructed. Selectalocationwhereitiseasytodrainthecondensing waterandconnect to the outdoorunit. Keeptheindoorunitfarawayfromheatsources,vaporand flammable gas. Besurethattheinstallationoftheindoorunitconformsto the installationdimensiondiagram. Besuretoleaveenoughspacetoallowaccessforroutine maintenance. Installinalocationwheretheunitismorethan3feetaway from other electric appliances such as television, audio devicesetc. Select location where air filters can be easily removed.

  4. Indoor Unit Installation Positioning for mounting cassette unit Step 1 Select a ceiling location suitable for the installation of the indoor unit. (Refer to the installation manual for location and dimension spacing.) Locate building support members sufficient to hold 4 times the weight of the unit being installed. Mark the location for the support brackets / downrods.

  5. Indoor Unit Installation Positioning for mounting cassette unit Step 2 Mount the support brackets, downrods and nuts. (Field supplied.) Double-nut the top of each bracket. Be sure that the brackets / downrods have been fixed firmly enough to withstand 4 times the weight of the unit, furthermore, the weight should be evenly shared by each downrod. Install the nuts and washers on the lower ends of the downrods with enough spacing to allow the cassette unit brackets to slide between the sets of washers. Double-nut the bottom nuts.

  6. Indoor Unit Installation Installing cassette unit Step 1 Raise the cassette unit into position, placing the downrods in the bracket slots of the cassette unit. Hand tighten the nuts so that the downrods will not come loose from the brackets.

  7. Indoor Unit Installation Installing cassette unit Step 2 Check and adjust the unit for proper height according to the installation guide and verify unit is level.

  8. Indoor Unit Installation Installing cassette unit Step 3 Tighten all nuts on the downrods. Make sure to lock the double-nuts together at all 8 locations on the downrods.

  9. Indoor Unit Installation Drilling a hole in the wall to install the piping Step 1 Find the location on the exterior wall where the piping and wiring will exit the building. Drill a 2 ½” diameter hole at a slight downward angle from the inside wall towards the outdoor wall so that the outside hole is a ¼” lower than the hole on the in side.

  10. Indoor Unit Installation Drilling a hole in the wall to install the piping Step 2 Insert a sleeve into the hole to prevent the connection piping and wiring from being damaged while being inserted through the hole.

  11. Indoor Unit Installation Drilling a hole in the wall to install the piping Step 3 Pass the piping and wires through the hole using caution to ensure tubing, wiring and insulation is not kinked or damaged. Insulate the piping hole both inside and out after the piping connections have been completed at the indoor and outdoor units. Note: Image for illustration purposes only. The entire drain line tubing must be wrapped to prevent moisture from cool condensate coming in contact with and damaging the ceiling or wall.

  12. Indoor Unit Installation Installing the water drain pipe Step 1 Attach the flexible drain pipe coupling to the condensate pump drain port using the supplied clamp.

  13. Indoor Unit Installation Installing the water drain pipe Step 2 Insulate the connection with the supplied gray insulating material.

  14. Indoor Unit Installation Installing the water drain pipe Step 3 • Attach the condensate drain pipe to the flexible drain pipe coupling. The diameter of the condensate drain pipe should be equal to or larger than the flexible drain pipe coupling. Support the drain pipe to avoid drooping or sagging of the line. Support the pipe every 39.4 - 59 inches as needed.

  15. Indoor Unit Installation Installing the water drain pipe Step 4 Should the pipe slope between the cassette unit and the wall exit hole point be insufficient, the pipe may be raised to allow for proper drainage. The raised pipe height should form a right angle to the unit and be less than 11 inches. (See diagram.)

  16. Indoor Unit Installation Installing the water drain pipe Step 5 The slant gradient of the flexible drain pipe coupling should be below 2.9 inches so that the drain hole fitting of the cassette unit doesnothaveunnecessaryforceapplied to it.

  17. Indoor Unit Installation Installing the water drain pipe Step 6 Refer to the abovediagramwheninstallingmultipleindoor unitswithacommondrainline. Check for proper drainage after completion of the drainpipe installation.

  18. Indoor Unit Installation Installing the connection pipes Aflaring kit may be necessary for theinstallation of the lineset.

  19. Indoor Unit Installation Installing the connection pipes Step 1 Align the center of the piping flare with the relevant fitting. Screwintheflarenutsbyhandandthentightenthenutswith a spanner and torque wrench. Refer to the chart for proper torque. Note:Firstconnecttheconnectionpipetotheindoorunitand then tothe outdoor unit. Pay attention tothe pipebending.Be suretonotdamagetheconnectionpipe.Toavoidleakagebe surenot to over-tighten thejoint nut. Note: Refrigerantlinesshouldbeseparately insulated. Oncethepipinghasbeenconnectedtotheoutdoorunitand aleaktesthasbeenperformed,slidetheinsulationoverthe joints to completely insulatetheconnections.

  20. Indoor Unit Installation Installing indoor unit wiring Step 1 Removethetwoscrewsandcoverplate,revealingthemain PCboardandterminalblock.

  21. Indoor Unit Installation Installing indoor unit wiring Step 2 Thecassetteunitiscapableofusingawiredremote.Ifinstallingthisoption,feedoneendoftheremote’swireintotheelectricboxthroughoneofthewiringgrommetslocatedontheside of the enclosure.PlugthewireintoconnectorC9.

  22. Indoor Unit Installation Installing indoor unit wiring Step 3 Firmly attach the power connection cables to the terminal block in the indoor unit, making certain to observe the proper terminal connections as shown on the unit wiring diagram. Note:Inadditiontotheoutdoorbreaker/fusedisconnect, a breaker or fuse is required for each indoor unit. The installation must be done in accordance with National, State, and/or local codes.

  23. Indoor Unit Installation Installing indoor unit wiring Step 4 The electric wire must be tightened securely with the wire restraining clip.

  24. Indoor Unit Installation Installing indoor unit wiring Step 5 Reattach the cover plate to the electric box.

  25. Indoor Unit Installation Installing indoor unit cover panel Step 1 Remove the two retaining screws from the cover filter panel release tabs.

  26. Indoor Unit Installation Installing indoor unit cover panel Step 2 Slide the two release tabs toward the center of the cover panel. Remove the center filter panel.

  27. Indoor Unit Installation Installing indoor unit cover panel Step 3 Place the cover panel on the cassette unit noting the position of the louver motors and the wiring harness. (The cassette unit has recessed areas where the louver motors fit.)

  28. Indoor Unit Installation Installing indoor unit cover panel Step 4 Screw the cover panel onto the cassette unit using four screws.

  29. Indoor Unit Installation Installing indoor unit cover panel Step 5 Plug the wiring harness connectors together.

  30. Indoor Unit Installation Installing indoor unit cover panel Step 6 Reinstall the filter cover and replace the retaining screws.

  31. Indoor Unit Installation Installing indoor unit cover panel Step 7 Perform final inspection of the cassette indoor unit making sure all mounts are secure.