AAON RK-60 - Manual (Page 8)

8
ELECTRICAL
Check the unit data plate voltage to make sure it agrees
with the power supply. Connect power to the unit
according to the wiring diagram provided with the unit.
The power and control wiring may be brought up through
the utility entry. Protect the branch circuit in accor-
dance with code requirements. Control wires should not
be run inside the same conduit. The unit must be
electrically grounded in accordance with the current
National Electric Code, ANSI / NFPA No. 70. In Canada
use current C.S.A. Standard C22.1 Canadian Electric
Code Part 1.
Power wiring is to the unit terminal block or main
disconnect. All wiring beyond this point has been done
by the manufacturer and cannot be modified without
effecting the unit's agency / safety certification.
INSTALLATION continued
▲
! WARNING
Electric shock hazard. Can cause injury or death.
Before attempting to perform any service or
maintenance, turn the electrical power to unit to
OFF at disconnect switch(es). Unit may have
multiple power supplies.
OUTSIDE AIR HOOD
For proper unit operation, the air hood must be opened at
start-up as shown below:
AIR HOOD SHOWN IN THE SHIPPING POSITION
(CLOSED)
Remove shipping screws from each side of the hood in the
"closed" postion. Lift hood to the "open" position, seal
flange and secure with sheet metal screws.
Air hoods may vary according to unit size and options.
The illustration shown is for practical guidelines for all
outside air hoods.
Outdoor air intake adjustments should be made accord-
ing building ventilation or local code requirements.
AIR HOOD SHOWN IN THE OPEN POSITION
AIRFLOW IS TO BE ADJUSTED AFTER INSTALLA-
TION TO OBTAIN AN AIR TEMPERATURE RISE
WITHIN THE RANGE SPECIFIED ON THE RATING
PLATE.
DUE TO JOB SPECIFICATION REVISIONS, IT MAY
BE NECESSARY TO ADJUST OR CHANGE THE
SHEAVE OR PULLEY TO OBTAIN THE DESIRED
AIRFLOW AT THE TIME OF INSTALLATION.
START-UP TECHNICIAN MUST CHECK BLOWER
MOTOR AMPERAGE TO ENSURE THAT THE AM-
PERAGE LISTED ON THE MOTOR NAMEPLATE IS
NOT EXCEEDED.
NOTE: All units are factory
wired for 208 / 230, 460 or
575 volt. If unit is to be
connected to a 208v supply,
the transformer must be
rewired for 208v service.
For 208v service interchange
the yellow and red conductor
on the low voltage control
transformer.
RED - BLK 208 volt ;
YEL - BLK 230 volt.
▲
On three phase units the rototation must be
checked on ALL MOTORS AND COMPRESSORS.
SCROLL COMPRESSORS ARE DIRECTIONAL.
Rotation must be checked on start-up by a
qualified service technician using
suction and discharge gauges.
Scroll compressors will FAIL if run in the wrong
direction. Blower and condenser rotation
should be checked and only be altered if
necessary at the power connection.
! CAUTION