TM 9-4120-403-14
(7) A source of 115 volt, single phase, 50/60 hertz input power rated at 18. 5 amps. The power source outlet
should be located as near as possible to the installed location of the air conditioner. The power source
wiring must include a disconnect switch. However, provisions should be made to insure that power is not
disconnected during normal operation and that the disconnect is not used to turn off the air conditioner for
normal shut-down.
(8) An earth ground capable of handling 18. 5 amps.
(9) Check that no source of dangerous or objectionable fumes are located near the fresh air intake.
(10) If possible make use of terrain features such as trees and buildings to provide a shaded location. This will
minimize the cooling load on the air conditioner.
(11) If possible avoid locations where the condenser and fresh air intakes will be laden with dust, dirt, soot,
smoke, or other debris.
b. Through the wall installation. Prepare an opening in the wall large enough to slide the air conditioner through.
(See fig. 4-2. ) Consideration should be given to service of internal components. All openings around air conditioner
must be sealed air tight.
c. Inside installation. Manufacture an arrangement of ducts for the condenser intake and discharge air openings,
and the fresh air damper intake and/or NBC filter intake, if installed. Ducts may be made for attachment to the air
conditioner cabinet using the mounting holes for the condenser inlet and outlet guards, and the fresh air screen and/or
the air intake on the NBC filter or some other arrangement may be made. Prepare appropriate openings in an exterior
wall for the ducts. Ducts may be designed to use the condenser inlet and outlet guards, and the fresh air screen supplied
with the air conditioner and relocated and installed on the new duct work. Adequate replacements or some other
arrangement of these items may be provided.
CAUTION
Easy access to fresh or return air filters must be provided. Filters may be left in position in unit or
relocated in duct work. Some installations (filters relocated in duct work) may require different size filters.
d. Outside installation. Manufacture an arrangement of ducts for the conditioned air intake and discharge
air. Ducts may be made for attachment to the air conditioner cabinet using the mounting holes for the
conditioned air intake and discharge grilles or some other arrangement may be made. Ducts may also be
made for installation of the conditioned air intake and discharge grilles on the inside ends or replacements
for these items may be used. Prepare appropriate openings in the appropriate wall for the ducts.
NOTE
Retain all items removed from unit. Store in safe place. Parts must be reinstalled prior to return to supply.
4-6