AAON M3-094 - Manual (Page 55)

55
Figure 29 - External Control Panel
Electrical
All external wiring must comply with the
National Electric Code (NEC) and any
additional local codes. It is the responsibility
of the installer to conform to all necessary
codes. All internal wiring complies with UL
1995
Note: All voltages should be within 10% of
unit and component nameplate voltages.
Check the unit data plate to make sure it
agrees with the power supply. For units
that contain factory wiring, connect power
supply to the unit according to the provided
wiring diagram.
All wiring should be done in conduit on the
exterior of the unit. Control wiring should
not be run in the same conduit as power
wiring. Protect the branch circuit in
accordance with code requirements.
The unit must be electrically grounded in
accordance with the National Electric Code,
ANSI / NFPA No. 70. In Canada use current
C.S.A. Standard C22.1, Canadian Electric
Code Part 1.
For field wired units, refer to the motor
connection diagram on the inside of the
motor terminal box for wiring instructions.
Check the electrical characteristics of the
motor to make sure they correspond to the
supply voltage and the conductor size used.
Foam Insulated Panel Cutting
Note: The location for field cut electrical
entry is marked on the unit. Field cut
openings must be a minimum of 6 inches
away from all components and wiring to
prevent damage due to drilling or cutting.
To pass wires through the wall or roof of the
unit, a hole should be cut and conduit passed
Anytime a foam insulated part has a
hole or cutout in it, the exposed foam
must be sealed from the air stream.
CAUTION
All high voltage electrical connections
should be checked for tightness prior
to unit startup. Loose connections
can
cause overheating and
component failure.
CAUTION
The foam insulation releases
dangerous fumes when it is burnt. Do
not cut a foam part with a cutting
torch or plasma cutter. Do not weld to
a foam filled part.
WARNING