• Turn on energy savings – lower heating costs as much as 20% with a system three times more efficient in making hot water than a typical boiler
• Be greener – heat with a renewable energy source and reduce carbon emissions.
• Blend in – quiet operation in both cooling and heating modes, and even lower sound during part load operation when most stringent sound requirements occur in evenings and on weekends.
• Plug and play – straightforward installation, compact and integrated, automatically discoverable on BACnet network, can communicate with nearly any protocol.

YLPA air-to-liquid reversible heat pumps are completely
factory assembled with all interconnecting refrigerant
piping and wiring ready for fi eld installation. The unit is
pressure tested, evacuated, and fully factory charged
with refrigerant R410A and oil in each of the independent
refrigerant circuits. After assembly, an operational test is
performed with water fl owing through the heat exchanger
to ensure that each refrigerant circuit operates correctly.
The unit structure is manufactured from heavy-gauge,
galvanised steel coated with baked-on powder paint
(Champagne (RAL 7006, Munsell No. 9.8YR4.36/1.2)).
YLPA heat pumps are designed in accordance with NFPA
70 (National Electric Code), ASHRAE/ANSI 15 Safety
code for mechanical refrigeration, ASME and rated in
accordance with ARI Standard 550/590.
COMPRESSORS
The unit has suction-cooled, hermetic scroll compressors.
High effi 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 Off by the
unit microprocessor to provide capacity control. Each
compressor is fi tted with a crankcase strap heater. All
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 which
changes the direction of the refrigerant fl ow and the
function of the heat exchanger when switching between
cooling and heating modes; service valves; isolation (ball/
angle) valves; pressure relief valves; a high absorption
removable core fi lter-drier; a sight glass with moisture
indicator; a cooling mode thermal expansion valve and a
heat pump mode thermal 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
fl owing through the baffl ed shell. The waterside (shell)
design working pressure is 10 barg. The refrigerant side
(tubes) design working pressure is 45 barg. 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 fl exible closedcell
foam. Water connection to the heat exchanger is via
victaulic grooved connections. Victaulic groove to fl ange
converters are available as an option
AMBIENT COILS
The ambient coils are seamless copper tubes, arranged
in staggered rows, mechanically expanded into coated
aluminium fi ns. Integral sub-cooling is included.
The condenser fans have composite metal/plastic `sickle`
blades integrated into the rotor of an external rotor motor.
They are designed for maximum effi ciency 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.
The IP54 fan motors are the totally enclosed air-over type
with permanently lubricated double-sealed ball bearings.
POWER AND CONTROL PANELS
All power and controls are contained in an IP 55 cabinet
with hinged and gasket sealed outer doors. The power
panel includes:
• Factory mounted non-fused disconnect switch
with external red/yellow, lockable handle to enable
connection of the unit power supply. The disconnect
switch can be used to isolate the power for servicing
and as a emergency stop.
• Factory mounted compressor contactors and
compressor fuses provide short circuit protection.
Overload protection for each compressor is provided
by inherent motor winding temperature sensing and
a trip module.
• Factory mounted fan contactors and fuses provide
short circuit protection. Overload protection for
each fan is provided by a inherent motor winding
temperature device.
• Factory mounted control transformer to convert the unit
supply voltage to 115 V - 1 Ø - 60 Hz for the control
system.
• Control supply fuses and connections for a remote
emergency stop device.

The control panel includes:
• A Liquid Crystal Display (two display lines of twenty
characters per line) with Light Emitting Diode
backlighting for easy viewing
• A Colour coded 12-button keypad
• Customer terminal blocks for control inputs and liquid
fl ow switch.
The microprocessor control includes:
• Automatic control of compressor start/stop,
anticoincidence and anti-recycle timers, pump and
unit alarm contacts. Automatic reset to normal unit
operation after power failure.
• Remote water temperature setpoint reset via analog
input or a pulse width modulated (PWM) input signal
or up to two steps of demand (load) limiting.
• Software is loaded into the microprocessor controller
via a SD card, with programmed setpoints retained in
a lithium battery backed real time clock (RTC) memory.
• Forty character liquid crystal display, with description
available in fi ve languages (English, French, German,
Spanish or Italian)
Programmable setpoints:
• Chilled liquid temperature setpoint and range
• Hot liquid temperature setpoint and range
• Remote reset temperature range
• Set daily schedule/holiday for start/stop
• Manual override for servicing
• Low ambient cutout
• High ambient cutout (heating only - fi xed)
• Low liquid temperature cutout
• Low suction pressure cutout
• High discharge pressure cutout
• Anti-recycle timer (compressor start cycle time)
• Anti-coincident timer (delay compressor starts)
Displayed Data:
• Leaving liquid temperature
• Air coil defrost temperatures
• Low leaving liquid temperature cutout setting
• Low ambient temperature cutout setting
• Ambient air temperature
• Metric or Imperial data
• Discharge and suction pressure cutout settings
• System discharge and suction pressures
• Anti-recycle timer status for each system
• Anti-coincident system start timer condition
• Compressor run status
• No load condition
• Day, date and time
• Daily start/stop times
• Holiday status
• Automatic or manual system lead/lag control
• Lead system defi nition
• Compressor starts & operating hours (each
compressor)
• Status of evaporator heater and fan operation
• Run permissive status
• Number of compressors running
• Mode solenoid valve status
• Load & unload timer status
• Liquid pump status
System Safeties:
• Cause individual compressors to perform auto shut
down and require manual reset in the event of 3 trips
in a 90-minute time period
• High discharge pressure
• Low suction pressure
• High-pressure switches
• Motor protector
Unit Safeties:
They are automatic reset and cause compressor to shut
down
• Low leaving chilled liquid temperature
• Under voltage
• Loss of liquid fl ow (through fl ow switch)
For each system a common alarm contact for:
• Low leaving chilled liquid temperature
• Low voltage
• Low battery
• High discharge pressure (per system)
• Low suction pressure (per system)
• Compressor motor protection

FLOW SWITCH - The fl ow switch or its equivalent must
be furnished with each unit. 150 psig (10.5 bar) DWP -
For standard units. Johnson Controls model F61MG-1C
Vapor-proof SPDT, NEMA 3R switch (150 PSIG [10.5
bar] DWP), -20°F to 250°F (-29°C to 121°C), with 1”
NPT connection for upright mounting in horizontal pipe.
(Field-mounted)
CHICAGO CODE RELIEF VALVES - Unit will be provided
with relief valves to meet Chicago code requirements.
(Factory-Mounted)
NEOPRENE PADS ISOLATORS - Recommended for
normal installations (Field mounted)
1” SPRING ISOLATORS - Level adjustable, spring and
cage type isolators for mounting under the unit base rails
(Field mounted).
2” SPRING ISOLATORS - Restrained Spring-Flex
Mountings incorporating a rugged welded steel housing
with vertical and horizontal limit stops. (Field mounted).
FLANGE KIT - Provides contractor with the couplings
best suited to tie into the chilled water piping. All fl anges
are PN10.
SINGLE-POINT SUPPLY TERMINAL BLOCK - Includes
enclosure, terminal-block and interconnecting wiring to
the compressors. Separate external protection must be
supplied, by others, in the incoming compressor-power
wiring. (Do not include this option if either the Single-Point
Non-Fused Disconnect Switch or Single-Point Circuit
Breaker options have been included.)
SINGLE-POINT CIRCUIT BREAKER - A unit mounted
circuit breaker with external, lockable handle (in
compliance with N.E.C. Article 440-14), can be supplied
to isolate the power voltage for servicing. (This option
includes the Single-Point Power connection.)

It’s well known that moving thermal energy from one substance to raise the temperature of another
is a more efficient form of heating than burning fuel. That’s why in residential and light commercial
space-heating applications, heat pumps are preferred over oil and gas furnaces and boilers. But the
benefit of heat pump efficiency is not limited to space heating. The same principle of efficiency can be
applied to heating water, which makes the YORK® YLPA Air-to-Liquid Heat Pump the smart alternative
to boilers and water heaters for commercial, institutional, and process applications.
As an air-to-liquid heat pump, the YLPA design takes thermal energy from the air and transfers it to the
liquid requiring heat. Using air as the heat source gives the YLPA heat pump the flexibility to be used
practically anywhere as a primary or a supplemental generator of hot liquids. And because it is reversible,
the YLPA heat pump can be operated in cooling mode providing a convenient heating and cooling
solution in one central unit.
When you think beyond the conventional boiler choice, you'll find the YLPA heat pump delivers benefits
that include:
• Globally certified energy efficiency in an extended operating envelope
• Low sound levels that are suitable for nearly any location
• Sustainability that makes your facility more environmentally friendly and helps achieve
LEED® certification
• Plug-and-play design that simplifies installation and commissioning

Although boilers and water heaters are typically the technology of choice for hydronic heating
and domestic hot water production, today’s high energy bills make it worthwhile to consider
more efficient ways to utilize the energy you’re buying.
The more efficient way to heat liquids is the YORK YLPA heat pump. That’s because thermal
efficiencies of commercial water heaters or boilers can range from 85% to 95%, which translates
into a coefficient of performance (COP) below 1.0.
In dedicated heat pump mode, however, the YLPA heat pump can produce hot water up to 130°F
at 3 times the COP of a boiler. The significant difference in COP means superior utilization of
energy input, making the YLPA heat pump a far more energy-efficient hot water generator — which
becomes even more attractive with up to 14.8 IPLV off-design efficiency in cooling mode.
To deliver a high COP, the YLPA heat pump employs an optimized defrost cycle using auto-adaptive
controls to run only as long as needed. Plus, enhanced liquid distribution through the coils in heating
mode, optimized coil-module design, and advanced fan control also boost COP.
With efficiency levels that exceed the ASHRAE 90.1 Standard and an extended operating envelope
down to 14°F, you can specify the YLPA heat pump with confidence — knowing it can create cold and
hot water at a lower cost in practically any location any time of the year.

The noise produced by outdoor mechanical equipment often draws a lot of attention.
That’s why more and more codes and ordinances adopted by states, cities, and townships
are including stringent decibel regulations to control sound emissions.
But with YORK YLPA heat pumps, we proudly point out how quietly they operate. YLPA heat pumps
are designed to help comply with sound requirements during the day, when background noise levels
often mask unit sound. And they make it easy to meet night-time requirements when sound-level
limits are typically an order of magnitude lower than day-time regulations.
Best of all, the YLPA design brings the advantage of quiet operation to heat pump duty.
Because heat pumps often operate with greater evaporator and condenser pressure differences
than chillers, the higher head pressure that results increases compressor workload and sound
output. But the YLPA heat pump is optimized to handle high head pressures and run as quietly
as a chiller. That means the YLPA heat pump doesn’t draw attention to itself.

Now you can get full credits for using a smarter water-heating solution.
That’s because the YLPA heat pump provides environmentally friendly benefits in two ways.
First, it reduces the direct effect of refrigerant interaction in the atmosphere by using HFC-410A
refrigerant, which has zero ozone-depletion potential and no phase-out date in accord with the
Montreal Protocol.
And second, the YLPA heat pump minimizes the indirect effect of utility CO2 emissions by using
less fossil fuel than boilers or water heaters, because it is always more energy efficient to transfer
heat than create it. The high efficiencies of heat pumps, when compared to boilers, help your LEED®
project qualify for Energy and Atmosphere credit 1 (EAc1).
When you add up both the direct and indirect benefits, the YLPA heat pump is the best heating
choice for the environment.

With today’s concerns about costs, you win points when you spend less on installation
and repairs.
That’s why the YLPA heat pump is designed to make installation fast and easy. The compact,
factory-tested YLPA unit minimizes the cost of rigging, pad size, and field testing.
And for power and control connectivity, the YLPA heat pump employs a “plug-and-play” design
using a single-point power connection. You stay in perfect control with continuous monitoring
via standard Metasys™ communications, as well as native BACnet,® Modbus,® N2 or optional
Lonworks® communications for virtually any BMS.
And to keep operating costs low, you can take advantage of the Johnson Controls global support,
parts, and service network, including optional Planned Service Agreements (PSA) coverage.
With over 15,000 technicians in over 150 countries, we’re the world’s largest HVAC and buildingservice
provider, bringing decades of chiller and heat pump experience to your door.
To learn more about why the YLPA heat pump is a smart solution for you, visit
johnsoncontrols.com/ylpa — or locate your nearest Johnson Controls branch office
at johnsoncontrols.com/locations.

York (Wuxi) air Conditioning and Refrigeration Co. Ltd, Located in Wuxi National High-tech Industrial Park, Jiangsu province, China. Covers an area of 60000 square meters, of which the heavy machine factory building takes up 14,000 square meters. At present, the company has about 500 staffs, in the field of large-size units. York Wuxi is the largest manufacturer in Asia –pacific region with an annual output of more than 3600 sets. Its products not only top on market share in China, but also see tremendous growth in export in recent years.

York Wuxi has six production lines in total, of which five are automated lines, including one air-cooled screw production line, one large-size water-cooled screw unit production line, one small-size water-cooled screw unit production line, and two centrifugal unit production line. All production line adapt the DFT technology, being the first in the industry. The entire work process is compact and rational. With the efficient management method (such as four-color light), these lines have become the most compact, most efficient and most advanced production line in the industry.

York Wuxi is equipped with globally advance equipment in every step of its production process, including:

Most advanced plasma digital cutter which can be used under water

Efficient digital plate bending machine with a roll length up to 4.8 meters

LINCO DC submerged arc welder imported from USA which is the most advanced equipment in the world.

Most advanced digital drill press in the industry.

Four large-sized chiller comprehensive performance test branches, (test capacity per set up to 2000 cold tons, for 10KV high voltage tests and frequency conversion tests), presenting the most advanced level in China.

YORK (CHINA) introduced the Performance Excellence Mode since the beginning of its operation. This mode adopted by most world-class enterprises focuses on the customers. It learns, meets and exceeds the customers’ needs and serves society through its human-oriented strategy and corporate culture. Based on the effective QEHS management system and advanced management tools (e.g. six-sigma).YORK (CHINA) consolidates its leading status in the industry.

1.   YORK RESEARCH AND DEVELOPMENT

In December 2004, to provide high-quality and competitive air conditioning products and refrigeration equipments to the Asia-Pacific region and on the parts of the world, YORK set up the YORK Asia Pacific research and development center in

Wuxi.

The center has the most advanced software systems, highly qualified professionals, and various test equipments and systems. The air-cooled test bench, unique in China and the largest in the

Asia-Pacific region, which has complete spring base for the equipment vibration test, can lower the noise to 20db by means of muffle devices. It also can carry out the working environment temperature simulation test by changing the indoor temperature via air conditioning and refrigeration system.