TM 9-4120-407-14
SECTION III SERVICE UPON RECEIPT
3-3. SITE AND SHELTER REQUIREMENTS. The air conditioner is designed and adaptable to a
variety of installation arrangements. Most typical installations are made by preparing an opening in an
exterior wall of the room or enclosure to be conditioned and positioning the air conditioner so that the front
of the cabinet is inside the room or enclosure and the back of the cabinet is outside. Alternate installations
may be made with the entire cabinet either inside or outside the conditioned area. The following are
minimum requirements for all installations:
a. Floor Space Requirement. A relatively level surface capable of bearing the weight of the air
conditioner. To insure proper condensate drainage, the surface should be level within 5 from front to back
and side to side.
b. Airflow Requirements. An unobstructed flow of air from:
(1) Outside the conditioned area to the intake and discharge of the condenser fan (back face of air
conditioner).
(2) Inside the conditioned area to the conditioned air supply and discharge openings (front face of air
conditioner).
(3) Outside the conditioned area to the fresh air intake (back of the air conditioner).
c. Accessibility Access to the front and back of the air conditioner for routine operation and servicing and
for necessary maintenance actions. Sufficient headroom and access to allow removal of the front and rear
panels for installation and servicing.
d. Electrical Source. A source of 208 volt, 3 phase, 50/60 hertz or 400 hertz input power rated at 37.0 amps
located as near as possible to the installed location. The wiring must include a disconnect switch.
Provisions should be made to insure that the power is not disconnected during normal operation. This
disconnect should not be used to turn off the air conditioner for normal shutdown.
e. Air Quality and Efficiency Check that no source of dangerous or objectionable fumes is near the fresh air
intake. If possible, make use of terrain features such as trees and buildings to provide a shaded location.
This minimizes the cooling load on the refrigeration system. Avoid a location where the condenser and
fresh air intakes will be laden with dust, dirt, soot, smoke or other debris.
3-4. SERVICE UPON RECEIPT OF MATERIAL.
a . Unloading. The air conditioner is packaged in a container designed for shipment and handling with
the cabinet in an upright position. The base of the container is constructed as a shipping pallet with
provisions for the insertion of the fork on material handling equipment.
(1) Remove all blocking and tiedowns that have been used to secure the container to the carrier.
3-2