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Page Title: 4-13. INSTALLATION INSTRUCTIONS - Continued
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ARMY TM 9-4120-381-14 NAVY EE-000- CA-MMA-010/7053-AC AIR FORCE TO 35E9-136-31 4-13. INSTALLATION INSTRUCTIONS - Continued. WARNING Do not allow anyone under equipment suspended from a lifting device.  Do not allow the  unit  to  swing  while  suspended  from  a  lifting  device.    Failure  to  observe  this warning may result in injury to personnel and damage to the equipment. CAUTION Use care in handling to avoid damage to the air conditioner.  If an overhead lifting device must be used, use an appropriate sling and spreader bar so that the weight of the unit is supported equally by the lifting eyes. c. Position Unit.  Position unit with an overhead hoist or fork lift per site installation instructions. NOTE For van or some shelter installations the lifting eyebolts must be removed. (1) Overhead Hoist.  Attach an overhead hoist, sling and spreader bar to the lifting rings on top of cabinet and move the air conditioner into position with supply air duct work fastened and sealed to bottom of unit and align mounting holes (see Figure FO-2). (2) Fork lift.  Position fork lift on either end of cabinet and move the air conditioner into position with supply air duct work fastened and sealed to bottom of unit and align mounting holes (see Figure FO-2). (3) Pull site input power cables through conduit. d. Secure Unit.  Secure unit with appropriate mounting hardware per site installation instructions. e. Seal Unit.  Seal all openings around cutouts for air conditioner, air and water tight.  Use gasket, caulking, or other suitable material.                                             _. f. Prepare Drain Hole.  The air conditioner is provided with one drain hole in the base.  Install 4-inch long drain tube with four self-tapping screws (#8 X 3/8).  Connect drain line to 4-inch long drain tube.  The drain line should lead to an appropriate facility drain, storm sewer, dry sump, or an acceptable outside area.  Be sure the entire length of the drain line is slightly lower than the unit base and sloping away to ensure gravity drainage. g. Install Ground.  Install a 6-AWG minimum ground wire between the air conditioner cabinet and an adequate earth ground. h. Connect Electrical Connections (see Figure 4-15). (1) Turn control panel MODE SELECT SWITCH to OFF. WARNING Shut  off  input  power  source  to  the  air  conditioner  before  performing  any  internal maintenance.    Voltages  used  can  KILL.    Shutting  the  unit  off  at  the  control  panel does not disconnect unit power. (2) Using No.6 AWG wires, route wires from power source through 1-inch fitting located in bottom of condenser section to terminals within RFI box.  Connect wires as shown in Figure 4-15. (3) Connect wires to a power source of 208 V ac, 3-phase, 50 or 60 Hz. i. See air conditioner schematic Figure FO-1 and wiring diagram Figure FO-3 for additional wiring information. j. Fan Contactors (K8 and K9).  Set four AUTO/MAN switches to MAN (see Figure 4-16). k. Condenser and Evaporator Fan Rotation (see Figure 4-17). (1) Momentarily turn MODE SELECT SWITCH to COOL then back to OFF. (2) Verify fan rotation is clockwise viewed from front of left condenser section. (3) If fan rotation is backward unit power is not wired properly.  Disconnect power at source and exchange wires connected to RFI box terminals A and B.  (see step h above) 4-10

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