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TM 5-4120-377-14
4-11. INSTALLATION INSTRUCTIONS
All alterations to the shelter or facility
before installation of air conditioner.
into which the air conditioner is to be installed should be complete
DO NOT LIFT without holding unit in upright position. Otherwise, unit will fall over.
a. Attach an overhead hoist through a sling and spreader bar to the lifting handles on each side of the
cabinet.
b.
c.
d.
Move air conditioner into position and aline mounting holes.
Secure unit with appropriate mounting hardware.
Base -.4375-14 UNC (4 holes)
Rear -.3125-24 UNF (3 holes)
Seal all openings around cutouts for air conditioner, air and water tight. Use gasket, caulking, or other
suitable material.
e. The air conditioner is provided with four drain holes in base. (See figure 4-2.) Remove plugs from all
drains possible for most complete drainage of condensate water. If water from these drains will be
objectionable or create a hazard, external overboard drains can be connected. Use standard 1/2-14 NPT male
pipe fittings to connect base drains. Any type of hose or tubing may be used as a drain line. 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 at the same height, or lower than the base to ensure gravity drainage.
f. Install a 10 AWG minimum ground wire between frame ground (FR-GND) on air conditioner cabinet and an
adquate earth ground.
g. Fabricate a power cable. (See para 4-13.)
The following test must be conducted with the power on. Exercise extreme caution.
Do not connect P1 connector to air conditioner before making following checks.
h. Connect power cable to a 208 volt, 3 phase, 400 hertz power source. (See para 4-12 and figure 4-21.)
(1) Apply power to power cable.
(2) Use a multimeter set to AC voltage range of at least 250 volts for following tests.
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