York YCWL0056SE, Installation Operation & Maintenance

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FORM 201.26-NM1
ISSUE DATE: 1/19/2018
JOHNSON CONTROLS
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2
SECTION 2 – PRODUCT DESCRIPTION
INTRODUCTION
YORK YCWL 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 installation.
The unit consists of up to 6 scroll compressors in a
corresponding number of separate refrigerant circuits,
a shell and tube DX evaporator, a water cooled con-
denser and oil separators for each circuit.
Before delivery, the unit is pressure tested, evacuated,
and fully charged with environmentally friendly refrig-
erant (R410A) and YORK oil in each of the indepen-
dent refrigerant circuits.
Models YCWL0056 to 0156 use POE syn-
thetic YORK “V”oil, Models YCWL0177
to 0198 use YORK “PVE”oil.
After assembly, an operational 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.
COMPRESSORS
The chiller utilizes suction-gas cooled hermetic, scroll
compressors. The YCWL compressors incorporate
a compliant scroll design in both the axial and radial
direction. All rotating parts are statically and dynami-
cally balanced. A large internal volume and oil res-
ervoir 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 transmission of vibration to
the rest of the unit.
REFRIGERANT CIRCUITS
Two independent refrigerant circuits are provided on
each unit. Each circuit uses copper refrigerant pipe
formed on computer controlled bending machines to
reduce the number of brazed joints resulting in a pli-
able and leak resistant system.
Liquid line components include: a service valve with
charging port, a high absorption removable core filter-
drier, a solenoid valve, a sight glass with moisture in-
dicator and a thermal expansion valve. Liquid lines be-
tween the expansion valve and the cooler are covered
with flexible, closed-cell insulation.
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.
LD12931
1
2
3
4
5
1
1. COMPRESSOR
2. COOLER
3. CONDENSER
4. POWER SECTION
5. CONTROL PANEL
COMPRESSOR
COMPRESSOR
COOLER
CONDENSER
POWER SECTION CONTROL PANEL
FIGURE 1 - YCWL WATER COOLED LIQUID CHILLER