Rheem RKKB SERIES, Owner'S Manual, Page: 6 / 68

The compressor compartment houses the heartbeat of the unit.
The scroll compressor (
) is known for its long life, and for
reliable, quiet, and efficient operation. The suction and discharge
lines are designed with shock loops (
) to absorb the strain and
stress that the starting torque, steady state operation, and shut
down cycle impose on the refrigerant tubing. Each compressor
and circuit is independent for built-in redundancy, and each circuit
is clearly marked throughout the system. Each unit has two
stages of efficient cooling operation, first stage is approximately
50% of second stage.
The condenser fan motor ( ) can easily be accessed and main-
tained by removing the protective fan grille. The polarized plug
connection allows the motor to be changed quickly and elimi-
nates the need to snake wires through the unit.
The outdoor coil uses the latest enhanced fin design ( ) for the
most effective method of heat transfer. The outdoor coil is pro-
tected by louvered panels, which allow unobstructed airflow while
protecting the unit from both Mother Nature and vandalism.
Each unit is
designed for both
downflow or hori-
zontal applications
(
) for job config-
uration flexibility.
The return air
compartment can
also contain an
economizer (
). Two
models exits, one for downflow
applications, and one for horizontal
applications. Each unit is pre-wired for the
economizer to allow quick plug-in installation. The
economizer is also available as a factory-installed option. Power
Exhaust is easily field-installed. The economizer, which provides
free cooling when outdoor conditions are suitable and also pro-
vides fresh air to meet local requirements, comes standard with
single enthalpy controls. The controls can be upgraded to dual
enthalpy easily in the field. The direct drive actuator combined
with gear drive dampers has eliminated the need for linkage
adjustment in the field. The economizer control has a minimum
position setpoint, an outdoor-air setpoint, a mix-air setpoint, and a
CO
2 setpoint. Barometric
relief is standard on all
economizers. The power
exhaust is housed in the
barometric relief opening
and is easily slipped in with
a plug-in assembly.
The Rheem roofcurb
(
) is made for
toolless assembly at
the jobsite by sequen-
tially engaging the
corner brackets into the
adjacent curb sides (
), which makes the
assembly process quick and easy.
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UNIT FEATURES & BENEFITS—RKKB/RKMB/RKNB- SERIES