ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
4.11 INSTALLATION INSTRUCTIONS. All alterations to the enclosure into which the air conditioner is to be installed
should be completed before installation of the air conditioner.
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.
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.
Position Unit. Attach an overhead hoist, sling and spreader bar to the lifting rings on top of cabinet and move
the air conditioner into position and align mounting holes (see fig. FO-1.).
Secure Unit. Secure unit with appropriate mounting hardware per site installation instructions.
Seal Unit. Seal all openings around cutouts for air conditioner, air- and watertight. Use gasket, caulking or
other suitable material.
Prepare Hole. The air conditioner is provided with two drain holes in side of base. 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. Plug unused drain
Control Box Cover Removal. Remove four screws, flat washers, lockwashers and control box cover (see fig. 4-
Connect Electrical Connection. (see fig. FO-2.).
a. Turn control panel MODE SELECT switch to OFF.
Ensure input power source is off before making electrical connections. Voltages used can
b. Using No. 12 AWG wires and applicable grommets, route wires from power source through 1-inch hole located at
the bottom on the right side of the air conditioner. Connect the wires to terminals within the control box assembly.
c Connect wires to a power source of 208 volt, 3-phase, 50/60 hertz.
d. Install a 12 AWG minimum ground wire between the air conditioner cabinet and an adequate earth ground.
e. See air conditioner schematic wring diagram fig. FO-2 for additional wiring information. Use grommets as
f. Install control box cover using four screws, lockwashers, and flat washers (see fig 4-18).