TM 9-4120-402-14
Section III SERVICE UPON RECEIPT OF EQUIPMENT
4-3.
SITE AND SHELTER REQUIREMENTS.
The air conditioner is designed so that it is 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 the conditioned and positioning the air
conditioner so that the front of the cabinet is inside to the room or enclosure and the back if 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.
A relatively level surface capable of bearing the weight of the air conditioner on which to set the base. To
insure proper condensate drainage, the surface should be level within 5from front to back and side to side. See figure
b.
An unobstructed flow of air from outside the conditioned area to the intake and discharge of the condenser
fan (back face of air conditioner).
c.
An unobstructed flow of air from inside the conditioned area to the conditioned air intake and discharge
openings (front face of air conditioner).
WARNING
Check that no source of dangerous or objectionable fumes is near the fresh air intake. Injury to
personnel can result if dangerous fumes are pulled into intake.
d.
An unobstructed flow of air from outside the conditioned area to the fresh air damper intake and/or CBR filter
intake, if installed (back face of air conditioner).
e.
Access to the front and back of the air conditioner for routine operation and servicing and for necessary
maintenance actions.
f.
Access to the top of the cabinet for removal of the top panel and sufficient headroom to allow maintenance
actions and internal component removal and installation through the top panel opening.
g.
A source of 208 volt, 3 phase, 50/60 or 400 hertz input power rated at 18.0 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 shutdown.
h.
An earth ground capable of handling 18.0 amps (10 AWG wire minimum).
i.
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.
j.
If possible, avoid a location where the condenser and fresh air intakes will be laden with dust, dirt, soot,
smoke or other debris.
4-3
