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ARMY TM 9-4120-381-14
NAVY EE-000- CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
4-13.
INSTALLATION INSTRUCTIONS - Continued.
WARNING
Do not allow anyone under equipment suspended from a lifting device. Do not allow
the unit to swing while suspended from a lifting device. Failure to observe this
warning may result in injury to personnel and damage to the equipment.
CAUTION
Use care in handling to avoid damage to the air conditioner. If an overhead lifting
device must be used, use an appropriate sling and spreader bar so that the weight
of the unit is supported equally by the lifting eyes.
c.
Position Unit. Position unit with an overhead hoist or fork lift per site installation instructions.
NOTE
For van or some shelter installations the lifting eyebolts must be removed.
(1)
Overhead Hoist. Attach an overhead hoist, sling and spreader bar to the lifting rings on top of cabinet
and move the air conditioner into position with supply air duct work fastened and sealed to bottom of
unit and align mounting holes (see Figure FO-2).
(2)
Fork lift. Position fork lift on either end of cabinet and move the air conditioner into position with
supply air duct work fastened and sealed to bottom of unit and align mounting holes (see Figure FO-2).
(3)
Pull site input power cables through conduit.
d.
Secure Unit. Secure unit with appropriate mounting hardware per site installation instructions.
e.
Seal Unit. Seal all openings around cutouts for air conditioner, air and water tight. Use gasket, caulking, or
other suitable material. _.
f.
Prepare Drain Hole. The air conditioner is provided with one drain hole in the base. Install 4-inch long drain
tube with four self-tapping screws (#8 X 3/8). Connect drain line to 4-inch long drain tube. The drain line
should lead to an appropriate facility drain, storm sewer, dry sump, or an acceptable outside area. Be sure
the entire length of the drain line is slightly lower than the unit base and sloping away to ensure gravity
drainage.
g.
Install Ground. Install a 6-AWG minimum ground wire between the air conditioner cabinet and an adequate
earth ground.
h.
Connect Electrical Connections (see Figure 4-15).
(1)
Turn control panel MODE SELECT SWITCH to OFF.
WARNING
Shut off input power source to the air conditioner before performing any internal
maintenance. Voltages used can KILL. Shutting the unit off at the control panel
does not disconnect unit power.
(2)
Using No.6 AWG wires, route wires from power source through 1-inch fitting located in bottom of
condenser section to terminals within RFI box. Connect wires as shown in Figure 4-15.
(3)
Connect wires to a power source of 208 V ac, 3-phase, 50 or 60 Hz.
i.
See air conditioner schematic Figure FO-1 and wiring diagram Figure FO-3 for additional wiring information.
j.
Fan Contactors (K8 and K9). Set four AUTO/MAN switches to MAN (see Figure 4-16).
k.
Condenser and Evaporator Fan Rotation (see Figure 4-17).
(1)
Momentarily turn MODE SELECT SWITCH to COOL then back to OFF.
(2)
Verify fan rotation is clockwise viewed from front of left condenser section.
(3)
If fan rotation is backward unit power is not wired properly. Disconnect power at source and exchange
wires connected to RFI box terminals A and B. (see step h above)
4-10
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