4-5. INSTALLATION SITE PREPARATION. - Continued.
(8) An earth ground capable of handling 48 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. 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 cavinet using the mounting holes for
the condenser inlet and outlet guards, and the fresh air filter frame 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
fresh air filter and frame supplied with the air conditioner and relocated and installed on new
duct work. Adequate replacements or some other arrangement of these items may be provided.
Easy access to air filters must be provided. Filters may be left in unit
or relocated in duct work. Some installations (filters relocated in duct
work) may require different size filters.
d. Outside instalIation. 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 guards or some other
arrangement may be made. Ducts may also be made for installation of the conditioned air intake
and discharge guards on the inside ends or replacements for these items may be used. Prepare
appropriate openings in the appropriate wall for the ducts.
Retain all items removed from air conditioner. Store them in a safe
These parts must be reinstalled prior to returning air
conditioner to supply. For a list of required items, see Appendix C.
AIR CONDITIONER PREPARATION FOR INSTALLATION.
a. General. No preparation is necessary if the air conditioner is to be installed by the
typical exterior wall opening method and operataed as a self-contained unit. Refer to
MIL-HDBK-116, Environmental Control of Small Shelters, for additioal general information.
For alternate installation methods, some preparation is necessaury.