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Installation
6 .2 Unpacking and Inspection
Units are securely packed. Upon arrival, carefully check
all of the items against the packing list to ensure all of the
cartons were received and the correct equipment was
received. Always keep the unit in the upright position as
indicated by the arrows on each carton.
Check the cartons for external damage. If damage is
found, immediately file a written request for inspection
by the carrier agent. The carrier is responsible for
performing a prompt inspection of the damage and for
a thorough investigation of each claim. The distributor
or manufacturer will not accept claims from dealers for
transportation damage. If no damage is found, carefully
remove and dispose of all shipping material.
After unpacking, keep the unit as upright as possible.
NOTICE: Laying a unit on its side or top could cause
equipment damage. If a unit is placed on its side or top,
inspect the unit for damage.
6 .3 Installing the Field Power
Supply
All field wiring must comply with NEC and all local
codes. The unit's wire size is based on Minimum Circuit
Amps (MCA) on the unit data plate.
Refer to the units' data plate for Maximum Circuit Breaker
(MCB) device size.
Use Heating, Air-Conditioning, and Refrigeration (HACR)
type circuit breakers or time delay fuses to ensure a
sufficient time delay to permit the compressor to start.
The voltage to the compressor terminals during
operation must be within the voltage range indicated on
the units' data plate.
Operation on improper line voltage constitutes
improper use and may cause damage to the electrical
components.
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Connect the wiring as per the wiring diagram
located on the unit.
1. Connect the vehicle's power supply to the unit.
2. Install a ground-fault and short-circuit over-current
protection device (fuse or breaker) per NEC Article
440 (or local codes).
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6 .4 Mounting the Unit
1. Use an appropriate tool to cut the required clearance
to mount the unit into the planned location.
2. Place the unit into position.
3. Secure the unit in place using the attached mounting
brackets (the bracket location may be adjusted if
needed).
6 .5 Installing the Ducting and the
Grilles
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Upon installation of the ducting, be certain that
the ducting is the proper size and all connections
are secured and sealed. Verify the routing of the
ducting does not create sharp bends, mashing, or
excess slack in the ducting.
1. Install the appropriate size return-air grille. Make
certain that the air path between the return-air
grille and the unit is sealed so that only air from
the conditioned space will be drawn through the
evaporator.
2. Connect the evaporator supply ducting to the
evaporator blower and to the supply-air grilles.
3. Connect the discharge ducting to the condenser
blower and to a discharge grille. Be sure that the
discharge air cannot recirculate into the condenser
intake.
6 .6 Wiring the Unit
Disconnect all power before wiring the unit.
Do not use gas piping as an electrical ground.
The unit cabinet must have an uninterrupted, unbroken
electrical ground to minimize the possibility of personal
injury if an electrical fault should occur.
Wiring must conform with NEC or CEC and all local
electrical codes.
Use the proper sized wires. Be sure they are not
undersized.
Use copper stranded conductors when wiring the unit.
Universal Air Conditioning Unit
EN
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