AAON RL-240 - Manual (Page 30)

30
Electrical Connection of Split Units
Before attempting to make wire connections
between sections it is important to refer to
the unit specific wiring diagram located in
the unit controls compartment to obtain
additional details related to the wiring of the
specific unit.
Adjoining sections are factory wired and
ready for field connection. The electrical
wiring is unit specific and designed
according to the overall unit configuration.
A factory supplied and mounted terminal
block is located in the main section of the
unit that must be used in making the rough-
in wire connections.
Each wire being spliced from section to
section is tagged at both ends according to
its termination. Junctions for wiring the
sections together are separated according to
voltage.
Outside Air Rain Hood
For proper unit operation, the outside air
hood must be opened at start-up as shown
below:
Remove shipping screws from each side of
the closed hood.
Lift hood outward to the open position and
secure with sheet metal screws. Apply butyl
caulking along the top and both sides of the
rain hood. Take care to seal the top corners
where the rain hood attaches to the unit. Outdoor air intake adjustments should be
made according to building ventilation or
local code requirements.
Air hoods vary according to unit size and
options. Figure below is shown as a practical
guideline for all outside air rain hoods.
Figure 9 - Air Hood Shown in the Open Position
End Flashing Installation
On RL Series D and E cabinet units which
are 142” wide (RL-150, 155, 180, 190, 210,
230) the cabinet width will overhang the
trailer on each side.
In order to secure and protect the unit during
transit the sheet metal end flashings have
been removed from the unit. The slot created
at the base of each end of the unit allows the
unit to set firmly on the trailer deck.
Sheet metal flashings are shipped loose with
the unit and once the unit is set into place
the flashings must be installed on each end
of the unit to complete the finished seal at
the base. The flashings are unit specific and
designed to cover the slot at each end of the
unit to prevent water run-off into the curb.
Failure to attach and seal the end of unit
with the flashings will result in water
leakage into the curb.
All wire terminations MUST BE made
before applying power to the unit.
The unit will not operate unless all
circuits are made.
CAUTION