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CHAPTER 2
INSTALLATION AND OPERATING INSTRUCTIONS
Section l. SERVICE UPON
2-1. Inspecting and Servicing the
Equipment
a. Inspect the entire air conditioner for signs of
damage, paying particular attention to the evap-
orator, condenser coils, fan motor and fans.
b. Perform daily preventive maintenance serv-
ices (table 3-1 ).
c. Perform quarterly preventive maintenance
services (table 3-1 ).
d. The air conditioner contains a full operating
charge of refrigerant and compressor oil. No fur-
ther service is required.
2-2. Installation of Separately Packed
Components
a. General. Although the air conditioner is a
self -contained unit, in certain installations it may
be desirable to use a sound attenuator and/or ‘e-
mote control operation.
b. Sound Attenuator. The sound attenuator
provides a sound dampening effect for the normal
sounds the air conditioner emits. It is mounted on
the f rent of the air conditioner (fig. 2-1). The
sound attenuator replaces the air intake and dis-
charge grilles. Air is taken in through the bottom
baffles and discharged through the top of the
attenuator. Refer to figure 2-1 and install the
sound attenuator as follows:
(1) Refer to figure 3-4 and remove the in-
take and discharge grilles.
(2) Place the sound attenuator in position on
the front of the air conditioner and aline the
grille mounting holes with the attenuator mount-
ing holes.
Note. Ensure notched edge of the attenuator
matches the fresh air damper door control chain location.
(3) Install the mounting bolts.
(4) Store grilles in a protected area to avoid
possible damage.
c. Blockoff Assembly. The blockoff assembly
(fig. 2-2) is provided for installation when the
air conditioner control panel is removed for re-
RECEIPT OF MATERIEL
mote control operation. The blockoff assembly
must be used to seal the cavity caused by removal
of the control panel so that no air will enter the
lower compartment. An electrical connector is
provided as part of the blockoff assembly for
making the remote control connection to the air
conditioner. Install the blockoff assembly as fol-
lows :
(1) Disconnect electrical power from air
conditioner.
(2) Refer to figure 3-4 and remove front ac-
cess cover.
(3) Refer to figure 3-10 and remove control
panel.
(4) Refer to figure 2-2 and install the block-
off assembly.
(5) Reinstall front access cover (fig. 3-4).
2-3. Installation or Setting Up Instructions
a. General. Set air conditioner in a level posi-
tion to allow proper draining of condensate. (Op-
eration will be satisfactory with unit setting at a
slight angle and using one of the alternate drain
connections. )
b. Locating the Unit. The front access cover and
intake and discharge grilles must be accessible
for removal to allow normal service and mainte-
nance. The condenser coil and fan must be unob-
structed to allow sufficient airflow for condensing
purposes. The intake and discharge openings at
the front of the unit should be free of obstruction
to permit maximum unit capacity.
c. Duct Installation. Certain types of operation
may require the use of air ducts as shown in
figure 2–3. In any event, this type of setup must
be used when operating with a chemical and bio-
logical filter attached to the air conditioner. In-
stall the discharge and return air ducts as fol-
lows :
(1) Refer to figure 3-4 and remove the dis-
charge and intake grilles.
(2) Refer to figure 2-3 and install the dis-
charge and return air ducts.
2-1
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