Sanyo XMHX1852, XMHX1252 If the Wall is Brick, Concrete or Similar, Removing the grille

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(2)Check with a tape measure or carpenter’s level. This is important so that the unit is correctly installed. (Fig. 3-140)

(3)Make sure the panel is flush against the wall. Any space between the wall and unit will cause noise and vibration.

b) If the Wall is Brick, Concrete or Similar

Drill 3/16" dia. holes in the wall. Insert Rawl plugs for appropriate mounting screws. (Fig. 3-141)

3-38. Removing the Grille to Install the Indoor Unit

In principle, with this model wiring can be completed without removing the grille.

However, if it is necessary to change the settings on the PCB, follow the procedure below.

Removing the grille

(1)Lift up on both sides of the air-intake grille to open it. (Fig. 3-142)

(2)Remove the filter. (Fig. 3-142)

(3)Adjust the flap so that it is horizontal. (Fig. 3-143)

(4)Open the installation screw covers below the grille (3 locations). (Fig. 3-143)

(5)Remove the screws. (Fig. 3-143)

(6)Remove the grille. (Fig. 3-144)

Attaching the grille

(1)Close the flap.

(2)Keep the grille installation tabs aligned with the top portion of the grille, and reinstall the lower portion of the grille.

Fit the installation tabs into the grooves and press the lower portion of the grille back into its original position to install it.

(3)Press on the installation tabs to completely close the grille. Check that the grille and frame are fitted tightly together.

3-39. Preparing the Tubing

(1)Arrangement of tubing by directions

a)Right or left tubing

The corner of the right or left frame should be cut with a hack saw or similar. (Fig. 3-145)

b)Right-rear or left-rear tubing

In this case, the corners of the frame do not need to be cut.

(2)Be sure to insulate the part of the drain hose that is run indoors, and the refrigerant tubing.

If these are not insulated, condensation may result in dripping and damage to walls and furniture.

The flare nuts on the 24-type (only) are large; therefore, use the supplied insulation material.

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Fig. 3-140

3/16" dia. hole

Rawl plug

Fig. 3-141

Intake grille

Filter

Flap

Open the grille

Fig. 3-142

K

Installation screw cover

Fig. 3-143

Remove the grille

Fig. 3-144

Frame

Right tubing outlet

When left and right side tubing

Fig. 3-145

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Contents R410A Models Indoor Units Sanyo Commercial SolutionsOutdoor Units Optional Controllers…In a Room For safe installation and trouble-free operation, you must…In Moist or Uneven Locations …In an Area with High WindsCountermeasures Amount 353 oz Amount 529 ozBe sure to recharge the refrigerant only in liquid form Care regarding tubingDifferent tools required Manifold gauge Vacuum pumpSingle-outlet valve Compressor specifications are differentExisting tubing cannot be used especially R22 Refrigerating machine oil differs R22Contents HOW to Process Tubing Electrical Wiring 5-1. General Precautions on WiringAIR Purging Test RUN 8-1. Preparing for Test RunAccessories Supplied Tools Required for Installation not suppliedOutdoor Unit Part name Type of Copper Tube and Insulation Material4-Way Air Discharge Semi-Concealed X-Type For sealing recessed portion of power supply1-Way Air Discharge Semi-Concealed Concealed DuctCeiling-Mounted Concealed Duct High-Static PressureWall-Mounted 4-Way Air Discharge Semi-Concealed XM TypeH3 C Tubing Length11 Main Tubing Size After Distribution LB, LC Tubing Size 10 Main Tubing Size LA12 Outdoor Unit Tubing Connection Size a D BTU/h 95.500 153.60015 Refrigerant tubing Existing tubing can be used System Limitations 18 System Limitations 17 Refrigerant Charge Amount at Shipment for outdoor unitCommon solenoid valve kit Tube branching methods horizontal use Header joint systemHeader joint system Indoor Model name Cooling capacity after distribution Remarks Tubing size with thermal insulationSuction Tube Size Part B Part C Part D Part E Part F Part G Part H InchDischarge Tube Liquid Tube 21 Dimensions for connections of each partTypes and specifications Precautions on Installation of Solenoid Valve KitSpecifications Optional Solenoid Valve KitUnit Relay kit Front Installation of Solenoid Valve KitBe done through liquid charging R410A additional charging absolutely mustExample Use the same tools for R22 and for R410A Main tubing Distribution joint tubingRemark Main tubingWall-Mounted Type Ceiling-MountedTypeIndoor Unit Front viewOutdoor Unit Without snow- proof ducting Without platform Precautions When Installing in Heavy Snow AreasCeiling panel Unit installationUnit Ceiling panel Air direction Front directionAir direction Placing the Unit Inside the Ceiling Suspending the Indoor UnitInstalling the Drain Piping Be careful since the fan will Start when you short the pinOn the indoor control board Removing the corner cover Installing the Ceiling Panel Attaching the air-intake grille Wiring the Ceiling PanelWhen Removing the Ceiling Panel for Servicing Checking After InstallationAdjusting the Auto Flap Special Remarks DC Fan Tap Change ProcedurePlacing the Unit Inside the Ceiling Suspending the Indoor UnitDo not install an air bleeder as Installing the Drain PipingThis may cause water to spray From the drain pipe outletBefore Installing the Ceiling Panel How to Install the Ceiling Panel Main unitChecking the Drainage Checking the unit positionWiring the Ceiling Panel Installing the Ceiling PanelChecking After Installation How to Attach the Corner & Air-Intake GrilleWhen Removing the Ceiling Panel for Servicing Adjusting the Auto Flap23-5/8 22-3/64Level. If it is not level, water Confirm that the unit isLeakage may occur Be sure to use a level gaugeInstalling the Drain Piping 3WAYECO-iUS.indd 2008/02/07 Wiring Electrical Power Wiring Wiring connectionsM5 ss40 Ss12 or 5/32 ss15/32 For fasteningRemoving the side panel Removing the intake grilleAir leakage Installing the intake grille Installing the side panel and intake grilleOthers Check after installation If a wireless remote controller is used27/32 Indoor unit Inspection accessAir outlet duct flange Refrigerant tubingIt is important that you use extreme care Enough to support the weight of the unitSupporting the indoor unit inside Ceiling. Ensure that the ceiling is strongMaximum of 19-11/16. Do not raise it any higher than Section directly after the connection port can be raised a19-11/16, as this could result in water leaks. Fig Be careful since the fan will start when you How to read the diagramShort the pin on the indoor control board Increasing the Fan Speed17-23/32 23-5/8 for checking and servicing the electrical system31/32 Min -31/32 Inspection plug Indoor Fan Performance How to Read the DiagramRefrigerant tubing drain hose position It is important that you use Wall and ceiling side opening positionExtreme care in supporting Indoor unit from the ceilApprox 63/64 Ceiling Surface Washer Nut Fixture Double nut Field supplyShaping the Tubing Duct for Fresh AirRear cover Downward gradient Min /100Check local electrical codes How to carry out power supply wiringRegulations before wir Ing. Also, check any specifiedSelecting and Making a Hole Installing the Rear Panel onto the WallIf the Wall is Wooden If the Wall is Brick, Concrete or Similar Removing the Grille to Install the Indoor UnitRemoving the grille Attaching the grilleDo not supply power to the unit or operate Installing the Drain HoseShaping the Tubing Right-rear tubing Left or left-rear tubingKHX2452 KHX0752 / 0952 / 1252Positions where anchor bolts are fastened Installing the Outdoor UnitTransporting Routing the Tubing Remove the Brackets Used for TransportConnect the Tubing Prepare the TubingRefrigerant tube port Tubing size mm Outer dia ThicknessWork method Tightening torque for each capOutdoor unit Time delay fuse or Circuit capacity General Precautions on WiringInter-outdoor unit control wiring Use shielded wiringPower Wiring System DiagramWiring Controller For K, A, X, T, U and D TypesXM Type For XM TypeOutdoor unit Indoor unit How to connect wiring to the terminal For stranded wiring Type Important Note When Wiring for Common TypeType XM Type Important Note When Wiring for XM TypeFlaring Procedure with a Flare Tool Connecting the Refrigerant TubingUse of the Flaring Method DeburringApproximate Tube diameter Tightening torqueThree tubes arranged together Two tubes arranged togetherFour tubes arranged together Taping the Tubes Finishing the InstallationLeak test Air Purging with a Vacuum Pump for Test Run PreparationManifold gauge Vacuum pump 45 min. or more 90 min. or more EvacuationUse a cylinder designed for use with R410A Charging additional refrigerantFinishing the job Test RUN Items to Check Before the Test Run Test Run ProcedureUnit with the unit Address setting of main outdoor unit S007 Unit No. setting Indoor unit setting S004 Rotary switch, redMain Outdoor Unit PCB Setting Automatic Address Setting from the Outdoor Unit Auto Address Setting Basic wiring diagram ExampleNo main unit Settings Outdoor main/sub22-9 Automatic Address Setting from Outdoor Unit Automatic Address Setting no compressor operation3 OFF Automatic Address Setting in Heating Mode Automatic Address Setting* from the Remote Controller Automatic Address Setting in Cooling ModeLED 2 Display during automatic address settingBlink alternately Remote Controller Test Run Settings If 1 indoor unit is connected to 1 remote controllerChecking the indoor unit addresses LED Possible cause of malfunctionMessage Alarm messages displayed on system controller Way Air Discharge Semi-Concealed Type X, XM Types Tips for Energy Saving Should the power fail while the unit is runningSoot Way air discharge semi-concealed type a Type 1-WAY100 TroubleshootingType standard static pressure Concealed Duct High-Static Pressure Type U, D TypesType high static pressure 101102 On the wired remote control unit103 CEILING-MOUNTED104 Or soot105 106 Tips for Energy Saving