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JOHNSON CONTROLS
12
FORM 150.63-NM6 (1020)
GENERAL
The 53 - 317 kW YCUL Condensing Unit Models
are shipped complete from the factory ready for field
installation.
The unit is pressure-tested, evacuated and given a nitro-
gen holding charge and includes an initial oil charge (R-
22 or HFC-407C refrigerant supplied by others). After
assembly, a operational test is performed to assure that
each control device operates correctly.
The unit structure is heavy-gauge, galvanized steel. This
galvanized steel is coated with baked-on powder paint,
which, when subjected to ASTM B117 500 hour, salt
spray testing, yields a minimum ASTM 1654 rating of
“6”. Units are designed in accordance with NFPA 70
(National Electric Code), ASHRAE/ANSI 15 Safety
code for mechanical refrigeration, and are cETL listed.
All units are produced at an ISO 9000-registered facil-
ity.
COMPRESSORS
The chiller has suction-gas cooled, hermetic, scroll
compressors. The compressors incorporate a compli-
ant scroll design in both the axial and radial direction.
All rotating parts of the compressors are statically and
dynamically balanced. A large internal volume and oil
reservoir provides greater liquid tolerance. Compressor
crankcase heaters are also included for extra protection
against liquid migration.
CONDENSER
Coils
– Fin and tube condenser coils of seamless, inter-
nally-enhanced, high-condensing-coefficient, corrosion
resistant copper tubes are arranged in staggered rows,
mechanically expanded into aluminum fins. Integral
subcooling is included. The design working pressure
of the coil is 450 PSIG (31 bar).
Fans
– The condenser fans are composed of corrosion-
resistant aluminum hub and glass-fiber-reinforced poly
-
propylene composite blades molded into a low noise
airfoil section. The are designed for maximum efficiency
and are statically and dynamically balanced for vibration
free operation. They are directly driven by independent
motors, and positioned for vertical air discharge. The fan
guards are constructed of heavy-gauge, rust-resistant,
coated steel. All blades are statically and dynamically
balanced for vibration-free operation.
Motors
– The fan motors are Totally Enclosed Air-Over,
squirrel-cage type, current protected. They feature ball
bearings that are double-sealed and permanently lubri-
cated.
REFRIGERANT CIRCUIT
One (YCUL0045-0121) or two (YCUL0125-0275) inde-
pendent refrigerant circuits will be finished on each unit.
All unit piping will be copper, with brazed joints. The
liquid line will include a field connection shutoff valve
with charging port located on each condenser circuit.
Suction line connections are provided on each refrig-
eration circuit. A filter drier and sight glass are shipped
loose for field installation on each refrigerant circuit.
All expansion valves, liquid line solenoid valves,
refrigerant, and refrigerant field piping are supplied
by others.
Specification
SPECIFICATIONS
Summary of Contents for YCUL0045
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