AAON RN Series, Installation Operation & Maintenance, Page: 50 / 136

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Table 11 - Draw-Through Drain Trap
Dimensions
Draw-Through
Drain Pan Pressure Trap Dimensions
Negative Static X X/2
(inches of water) (inch) (inch)
-0.50 1.50 0.75
-1.00 2.00 1.00
-1.50 2.50 1.25
-2.00 3.00 1.50
-2.50 3.50 1.75
-3.00 4.00 2.00
-3.50 4.50 2.25
-4.00 5.00 2.50
-4.50 5.50 2.75
-5.00 6.00 3.00
-5.50 6.50 3.25
-6.00 7.00 3.50
-6.50 7.50 3.75
-7.00 8.00 4.00
-7.50 8.50 4.25
-8.00 9.00 4.50
Startup
(See back of the manual for startup form.)
During startup, it is necessary to perform
routine checks on the performance of the unit.
This includes checking the air flow, air
filters, condenser water flow, dampers,
heaters, and refrigerant charge.
Filters
Do not operate the unit without filters in
place. Check the unit for correct filter
placement during startup. Operation of the
equipment without filters will result in a
clogged evaporator coil.
Supply Fans
RN Series units are equipped with direct
drive
backward curved plenum fan
assemblies that are selected to deliver the air
volume specified according to unit size and
job requirements. This is either done with air
volume bands in the blower wheels or with
variable frequency drives. Field airflow
adjustment may be required at startup.
Air volume bands for the wheels are sized
according to the unit’s air delivery
All condensate drain connections
must be used. Drain pans are sloped
towards connections.
Improper installation, adjustment,
alteration, service or maintenance can
cause property damage, personal
injury or loss of life. Startup and
service must be performed by a
Factory Trained Service Technician.
WARNING
Electric shock hazard. Shut off all
electrical power to the unit to avoid
shock hazard or injury from rotating
parts.
WARNING
All condensate drains must be
trapped individually before they are
connected to a common line.
CAUTION
CAUTION