JOHNSON CONTROLS
17
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
2
SECTION 2 – PRODUCT DESCRIPTION
INTRODUCTION
YORK YCRL chillers are designed for water or water-
glycol cooling.
All models are designed for indoor installation. The
units are completely assembled with all interconnect-
ing refrigerant piping and internal wiring ready for
field connection to a remote condenser.
The unit consists of up to 6 scroll compressors in a
corresponding number of separate refrigerant circuits,
a shell and tube DX evaporator, and oil separators for
each circuit.
Before delivery, the unit is pressure tested, evacuated,
and fully charged with a nitrogen holding charge and
YORK “V” oil (POE synthetic) in each of the inde-
pendent refrigerant circuits. After assembly, an opera-
tional test is performed with water flowing through the
cooler to ensure that each refrigerant circuit operates
correctly.
The unit framework is fabricated using heavy-gauge
galvanized steel which is zinc phosphate pre-treated
and powder coated to minimize corrosion.
Additional oil change may be required
depending upon the length of piping.
COMPRESSORS
The chiller utilizes suction-gas cooled hermetic, scroll
compressors. The YCRL compressors incorporate a com-
pliant scroll design in both the axial and radial direction.
All rotating parts 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. All
compressors are mounted on isolator pads to reduce trans-
mission of vibration to the rest of the unit.
REFRIGERANT CIRCUITS
Two independent refrigerant circuits are provided on
each unit. All piping will be copper with brazed joints.
Liquid line components include: a shut off valve with
charging port, a high absorption removable core filter-
drier, a solenoid valve, a sight glass with moisture indi-
cator and a thermal expansion valve. The entire suction
line and the liquid lines between the expansion valve
and the cooler are covered with flexible, closed-cell in-
sulation.
Suction line components include: a pressure relief
valve, a pressure transducer and a service valve. Op-
tional isolation ball valves are available. Suction lines
are covered with flexible, closed-cell insulation.
Discharge lines include service and isolation (ball)
valves, two high-pressure cutout switches, a pressure
transducer and a pressure relief valve.
FIGURE 1 -
YCRL WATER COOLED LIQUID CHILLER
CONTROL
PANEL
COOLER
POWER SECTION
COMPRESSOR
COMPRESSOR
