York YLPA 0115SE User Manual

11
JOHNSON CONTROLS
FORM 150.68-ICOM1
ISSUE DATE: 10/15/2020
PRODUCT DESCRIPTION
compressors are mounted on isolator pads to reduce
transmission of vibration to the rest of the unit.
The motor terminal boxes have IP54 weather protection.
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 high
integrity and reliable system.
Each circuit shall incorporate all components necessary
for the designed operation including: a suction
accumulator, a liquid receiver, a four way reversing
valve, service valves, isolation (ball/angle) valves,
pressure relief valves, a high absorption removable
core lter-drier, a sight glass with moisture indicator,
and an electronic expansion valve. Suction lines shall
be covered with closed-cell insulation.
REFRIGERANT TO WATER HEAT EXCHANGER
The 2-pass dual circuit shell and tube type direct
expansion (DX) heat exchanger has refrigerant in the
tubes and liquid owing through the baed shell. The
waterside (shell) design working pressure is 150 psig.
The refrigerant side (tubes) design working pressure is
650 psig. The refrigerant side is protected by pressure
relief valve(s).
The heat exchanger is equipped with a heater for frost
protection to -4°F (below this the ball valve in the
discharge line must be closed) and insulated with exible
closed-cell foam.
Water connection to the heat exchanger is via victaulic
grooved connections. Victaulic groove to flange
converters are available as an option.
AMBIENT COILS
The ambient coils are seamless copper tubes, arranged
in staggered rows, mechanically expanded into coated
aluminium ns. Integral sub-cooling is included.
The ambient coil fans are designed for maximum
efficiency and 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 from heavy-
gauge, corrosion resistant, coated steel.
INTRODUCTION
YLPA air-to-liquid heat pumps are completely factory
assembled with all interconnecting refrigerant piping and
wiring ready for eld installation. The unit is pressure
tested, evacuated, and fully factory charged with
refrigerant R-410A and oil in each of the independent
refrigerant circuits. After assembly, an operational
test is performed with water owing through the heat
exchanger to ensure that each refrigerant circuit operates
correctly.
The unit structure is manufactured from heavy-gauge,
galvanized steel coated with baked-on powder paint
(Champagne (RAL 7006, Munsell No. 9.8YR4.36/1.2)).
YLPA units are designed and manufactured within an
EN ISO 9001 accredited organization and in conformity
with the following Standards and Codes:
• ANSI/ASHRAE Standard 15, Safety Code for
Mechanical Refrigeration.
• ANSI/NFPA Standard 70, National Electrical Code
(N.E.C.).
• ASME Boiler and Pressure Vessel Code, Section VIII
Division 1.
• ARI Standard 550/590-98, Water Chilling Packages
Using the Vapor Compression Cycle.
• ASHRAE 90.1 Energy Standard for Building Except
Low-Rise Residential Buildings.
• ARI 370 Sound Rating of Large Outdoor Refrigeration
and Air Conditioning Equipment.
In addition, the chillers conform to Underwriters
Laboratories (U.L.) for construction of chillers and
provide U.L./cU.L. Listing Label.
COMPRESSORS
The YLPA unit has suction-cooled, hermetic scroll
compressors. High eciency is achieved through a
controlled orbit and the use of advanced scroll geometry.
The compressors incorporate a compliant scroll design
in both the axial and radial directions. All rotating parts
are statically and dynamically balanced. The compressor
motors have integral protection against overloads that
will automatically reset. Starting is direct on line, and
soft start is available as an option.
The compressors are switched On and O by the unit
microprocessor to provide capacity control. Each
compressor is tted with a crankcase strap heater. All

York YLPA 0115SE Specifications

General

Brand	York
Model	YLPA 0115SE
Category	Heat Pump
Language	English