| Вид документа | Технічний паспорт |
|---|---|
| Виробник | JCI |
| Моделі | PC155-100, YLCS-HA, SA-HA |
| Група обладнання | other |
| Мова документа | англійська |
| Розмір файлу | 1.7 МБ |
Про документ
York YLCS water cooled liquid chillers and remote air cooled chillers using R134a with semi-hermetic twin screw compressors, in three versions: standard (SA), high condensing temperature (HA) and remote air cooled condenser (AA). Designed for plant room installation with a cooling tower or dry cooler for heat rejection; glycol operation available on HA/AA models.
Ключові дані
| Refrigerant | R134a |
|---|---|
| Cooling capacity range (SA) | 342 to 1099 kW |
| Cooling capacity range (HA) | 282 to 987 kW |
| Cooling capacity range (AA) | 322 to 1073 kW |
| Compressor | semi-hermetic twin helical screw, 2 per unit |
| Power supply | 400 V, 3 Ø, 50 Hz (nominal), 360 to 440 V |
| Panel enclosure rating | IP42 standard, IP54 optional |
| Air temperature surrounding unit | +4 to 46 °C |
Застосування
- Water or water-glycol cooling in plant rooms with cooling tower or dry cooler heat rejection
- High condensing temperature applications (HA models)
- Applications requiring remote air-cooled condensers (AA models)
- Heat pump applications (optional Heat Pump Sensor Kit)
Особливості
- Semi-hermetic twin helical screw compressors, capacity control 100 % to 15 % step control
- Microprocessor control with LCD display, fault diagnostics, data logging, temperature reset capability
- Multiple independent refrigerant circuits per compressor (stand-by security)
- Star/Delta starter (open or closed transition optional); inrush current limited to approximately 33 % LRA
- Separate power and control compartments with lockable doors and emergency stop device
- Full factory run test; unit remote alarm contacts; Building Management System interface (RS485, YORK ISN; BACNET™, MODBUS™ & LONMARK™ via YorkTalk Translator)
- Optional power factor correction to 0.95, E-Link Gateway, anti-vibration mounts, double thickness insulation
Технічні дані
| Parameter | Value |
|---|---|
| Refrigerant | R134a |
| Cooling capacity SA models (7 °C LCLT, 35 °C leaving condenser water) | 342 … 1099 kW |
| Cooling capacity HA models (7 °C LCLT, 50 °C leaving condenser water) | 282 … 987 kW |
| Cooling capacity AA models (7 °C LCLT, 45 °C saturated discharge temp.) | 322 … 1073 kW |
| EER (SA models) | 4.78 … 5.02 |
| Liquid outlet temperature (water) | 4.5 to 15 °C |
| Liquid outlet temperature (glycol, HA/AA only) | -12 to 15 °C |
| Chilled liquid outlet temperature range | 3.3 to 8 °C |
| Condenser liquid outlet temperature | 30 to 40 °C (SA) / 60 °C (HA) |
| Evaporator waterside design working pressure | 10 barg |
| Evaporator refrigerant side design working pressure | 20 barg (0350–0750), 24 barg (0860–1120) |
| Compressor / oil separator design working pressure | 31 barg |
| Condenser water side design working pressure | 10 barg |
| Condenser refrigerant side design working pressure | 30 barg |
| Refrigerant system high pressure side | 18 barg (SA) / 22 barg (HA/AA) |
| Power supply voltage | 400 V, 3 Ø, 50 Hz (nominal), 360 to 440 V |
| Air temperature surrounding unit | +4 to 46 °C |
| Panel enclosure rating | IP42 (standard), IP54 (option) |
| Capacity control steps | 15, 27, 39, 51, 63, 75, 87, 100 % |
| Number of refrigerant circuits | 2 |
| Compressors per unit | 2 |
| Operating weight (SA-HA) | 3420 … 6610 kg by model |
| Dimensions length | 3225 … 3830 mm by model |
| Height | 2100 … 2163 mm by model |
Варіанти замовлення
- Models: 0350, 0415, 0480, 0530, 0575, 0620, 0670, 0750, 0860, 0980, 1120 in SA, HA and AA versions
- Options include: single/multi-point power supply, circuit breakers, BAS/EMS interface, power factor correction, flow switch, suction shut-off valves, evaporator nozzle/flange kits, pressure relief valve kits, dual pressure switch, sequence controller, printer, paint overspray, lifting lug kit, factory witness test
Допуски та стандарти
- Manufactured to ISO 9001/EN 29001
- Flanges: ISO EN1092-1 Type 0.1.A welded flanges and companion flanges
- Sound pressure values to ISO 3744; sound pressure values for EN 292-1991
- Shared cooling capacity data is Eurovent Certified
Текст документа
YLCS - SA, HA & AA MODELS
ENGINEERING GUIDE Revision 6 PC155-100 (GB 0510)
WATER COOLED LIQUID CHILLER AND
REMOTE AIR COOLED CHILLER
R134a
PC155-100 Rev.6 (0510)
Table of Contents
Features............................................................................................................................................................. 4
Specification..................................................................................................................................................... 5
Accessories and Options............................................................................................................................. 7
Operating Limitations.................................................................................................................................... 9
Refrigeration Flow Diagram (YLCS 0350 to 0620 Models)............................................................... 10
Refrigeration Flow Diagram (YLCS 0670 to 1120 Models)............................................................... 10
Selection Guide - Water.............................................................................................................................. 12
Selection Guide - Glycol (HA Models Only)......................................................................................... 14
Cooling Capacities (0350SA - 1120SA)........................................................................................................ 16
Cooling Capacities (0350HA - 1120HA). ...................................................................................................... 17
Glycol Cooling Capacities (0350HA - 1120HA)........................................................................................ 21
Cooling Capacities (0350AA - 1120AA)........................................................................................................ 25
Glycol Cooling Capacities (0350AA - 1120AA). ....................................................................................... 29
Physical Data................................................................................................................................................... 33
Electrical Data - Unit................................................................................................................................... 34
ESEER Data........................................................................................................................................................ 38
Sound Data. ...................................................................................................................................................... 40
Dimensions. ...................................................................................................................................................... 41
Power Supply Connection Diagrams. ................................................................................................... 48
Customer Connection Diagram............................................................................................................... 50
Clearances...................................................................................................................................................... 51
GB
PC155-100 Rev.6 (0510)
Features
York YLCS Water Cooled Screw Chillers are a compact
design suitable for water or water-glycol cooling. Models
are available in three versions:
• Standard units (SA),
• Units for applications requiring high condensing
temperatures (HA)
• Units for applications where remote condensers are
necessary (AA).
Semi-hermetic twin helical screw compressors are
provided to ensure high operational efficiencies and
reliable performance.
They are designed to be located in a plant room and
require a cooling tower or dry cooler for heat rejection.
Available Models and Nominal Capacities (Table1)
SA Models
Model 0350 0415 0480 0530 0575 0620 FEATURES BENEFITS
Cooling Capacity (kW) 342 411 480 518 556 605 Manufactured to ISO 9001/EN High standard of quality control.
29001.
Model 0670 0750 0860 0980 1120
High efficiency industrial type Energy efficient, long life, reliable
Cooling Capacity (kW) 645 743 849 966 1099 semi-hermetic twin helical screw compressor.
compressors.
EER 4.80 4.78 4.93 5.02 5.00
Separate power and control Operator safety considerations.
Cooling capacities at 7°C leaving chilled liquid temperature compartments with lockable
and 35°C leaving condenser water temperature. doors and emergency stop
device.
HA Models Power compartment optional Operator safety convenience.
Model 0350 0415 0480 0530 0575 0620 door interlocked isolators.
Cooling Capacity (kW) 282 339 397 426 456 495 Star/Delta compressor starter. Reduced starting current.
Microprocessor control with S y s t e m d a t a l o g g i n g a n d
Model 0670 0750 0860 0980 1120 visual display of temperatures, temperature reset capability.
pressures, motor current, Fault diagnostics. Energy
Cooling Capacity (kW) 578 667 762 870 987 operating hours and number of management.
Cooling capacities at 7°C leaving chilled liquid temperature starts.
and 50°C leaving condenser water temperature. Multiple Independant Refrigerant System Stand-by Security
Circuits
AA Models Full Factory Run Test Verifies quality control and
Model 0350 0415 0480 0530 0575 0620 ensures that the unit operates
satisfactorily prior to delivery
Cooling Capacity (kW) 322 388 454 490 526 572
Unit remote alarm contacts. Warning notification.
Model 0670 0750 0860 0980 1120 O p t i o n a l r e m o t e w a t e r Improves operating efficiency.
Cooling Capacity (kW) 628 724 828 943 1073 temperature reset.
Building Management System For central data logging and
Cooling capacities at 7°C leaving chilled liquid temperature at
interface. single point system monitoring
45°C saturated discharge temperature at unit. and control.
GB
PC155-100 Rev.6 (0510)
Specification
General The standard star/delta starter utilises 3 motor contactors
YLCS models shall be completely assembled with all and a transition delay relay. The optional closed Star/
interconnecting refrigerant piping and internal wiring, Delta starter utilises 4 motor contactors, a set of transition
ready for field installation. SA and HA units shall be resistors and a transition delay relay. The star/delta start
pressure tested, evacuated, and fully factory charged with allows inrush current to be limited to approximately
refrigerant and oil in each of the independent refrigerant 33% LRA with the closed transition option reducing the
circuits. For AA units, the unit shall be pressure tested, transient star to delta current. When the microprocessor
evacuated, and filled with 0.35 barg pressure of nitrogen initiates a start signal to run a compressor, it runs in Star
per independant circuit. After assembly, a simulated for 4 seconds and then transitions to Delta.
functional test shall be performed on the unit
Oil Cooling
Unit to have final overspray paint after assembly Compressor oil cooling shall be provided by refrigerant
(optional) by customer request. liquid, which will be injected into the rotor suction when
the temperature setpoint is exceeded.
Compressors
Each compressor shall be direct drive, semi-hermetic, Evaporator
rotary twin screw type and include the following items: The evaporator is a shell and tube design with refrigerant
on the tube side and water on the shell side. Tubes are
• Two screw rotors, with asymmetric profiles, formed in a "U" shape and held in a tube bundle, which is
manufactured from forged steel. free to expand independent of the shell. An independent
• A cast iron compressor housing precision machined circuit shall be provided for each compressor.
to provide optimal clearance for the rotors.
• The entire compressor, from suction to discharge shall The waterside (shell) design working pressure of the
have a design working pressure of 31 barg. evaporator is 10 barg. The refrigerant side (tubes) design
• Capacity Control: The compressors shall start at the working pressure is 20 barg on models 0350 to 0750
minimum load position and provide a load control and 24 barg on models 0860 to 1120.
range from 100% to 15% of the full load using step
control. A microprocessor controlled output pressure The evaporator shall have water pass baffles fabricated
regulating capacity control valve shall be supplied to from non metallic composite materials (0350 to 0750)
command compressor capacity independent of control and corrosion resistant galvanised steel (0860 to 1120),
valve input pressure and to balance the compressor removable head for access to internally enhanced,
capacity with the cooling load. seamless, copper tubes. Water vent and drain
• An automatic spring return of capacity control valve connections shall also be included.
to the minimum load position to ensure compressor
Models 0350 to 0750 have vertical water nozzles
starting at minimum motor load.
(standard) with victaulic couplings (shipped loose) for
• An internal discharge check valve to prevent rotor
field installation by contractor. Horizontal water nozzles
backspin upon shutdown.
with victaulic couplings (shipped loose) are available
• Remote acoustic tuned muffler.
as an option.
• Discharge and optional suction shut-off service
valves. Models 0860 to 1120 have horizontal water nozzles with
• A reliable suction gas cooled high efficiency, victaulic grooves (victaulic couplings to be supplied by
accessible hermetic motor with redundant overload others).
protection using both thermistor and current overload
protection. Optional ISO EN1092-1 Type 0.1.A welded flanges
• A suction gas screen and serviceable, 17 micron full and companion flanges, complete with nuts, bolts and
flow oil filter within the compressor housing. gaskets are available on all models.
• A 300 W compressor body heater.
Condenser
• Integral oil separators with a design working pressure
of 31 barg shall be the high efficiency, augmented gas For SA and HA units separate circuit condensers shall
impingement type to maximise oil extraction without be cleanable shell & tube type with a built in sub-cooler
fragile media to break down. and re-moveable water heads. The design working
pressure on the water side shall be 10 barg and 30 bar
Motor Starting on the refrigerant side which is protected by pressure
Two types of compressor motor starting are available: relief valve(s). For AA units water cooled condensers
star/delta open transition starter and optional star/delta shall be factory removed. Remote air-cooled condenser
closed transition starter. to be supplied by others.
GB
PC155-100 Rev.6 (0510)
Refrigerant Circuits Microprocessor Controls
An independent refrigerant circuit shall be provided The microprocessor shall have the following functions
per compressor. Liquid line components shall include: and displays:
manual shut-off valve with charging port, high absorption • A liquid crystal 40 character display with text provided
removable core filter-drier, solenoid valve, sight glass on two lines and light emitting diode backlighting for
with moisture indicator, and thermostatic expansion outdoor viewing.
valve. Suction lines components shall include a pressure • A colour coded, 35 button, sealed keypad with
relief valve and a service valve (optional) and shall sections for Display, Entry, Setpoints, Clock, Print,
be covered with closed-cell insulation. Discharge line Program and Unit On/Off switch.
components shall include a manual shut-off valve,
pressure relief valve, temperature sensor and high- The standard controls shall include: automatic pump
pressure cut-out sensors. down at shutdown, run signal contacts, demand load
limit from external building automation system input,
Power and Control Panels remote reset liquid temperature reset input, unit alarm
All controls and motor starting equipment necessary for contacts, chilled liquid pump control, automatic reset
unit All controls and motor starting equipment necessary after power failure, automatic system optimisation to
for unit operation shall be factory wired and function match operating conditions, software stored in non-
tested. volatile memory (EPROM) to eliminate chiller failure due
to AC power failure.
The panel enclosure shall be designed to IP42 (rain/
dust tight) and be manufactured from powder painted The microprocessor can be directly connected to a
galvanised steel. Component mounting panels are YORK ISN Building Automation System via the standard
of non-painted galvanised steel to ensure optimum on-board RS485 communication port. This option
protective circuit (earthing). also provides open system compatibility with other
communications networks.
The Power and Control Panel shall be divided into
a power section for each electrical system, a control Programmed Setpoints shall be retained in a lithium
section and a common input section. Power entry is battery backed RTC memory for a minimum of 5
from the top of the control panel common input section. years.
All sections shall have a separate hinged, latched, and
gasket sealed door. DISPLAY – In Metric (°C and barg) or English (°F and
psig) units. For each circuit, the following items shall be
Each power compartment shall contain: displayed:
Compressor fuses, compressor and phase sequence • Entering and leaving chilled liquid temperature.
failure, phase rotation and star/delta time delay relays • Day, date and time. Daily start/stop times. Holiday
to give overload and short circuit protection. and Manual Override status.
• Compressor operating hours and starts. Automatic or
The control section shall contain: manual lead/lag. Lead compressor identification.
On/Off switch, microcomputer keypad and display, • Run permissive status. No cooling load condition.
microprocessor board, I/O expansion board, relay Compressor run status.
boards and power supply board. • Anti-recycle timer and anti-coincident start timer status
per compressor.
Models with Standard Single Point Power Supply • System suction (and suction superheat), discharge,
Connection and oil pressures and temperatures.
The common input section contains: • Percent full load compressor motor current.
An incoming non-fused disconnect switch for connection Compressor capacity control valve input steps.
of the customer provided single power supply. Internal • Cut-out status and set-points for: entering chilled liquid
factory wiring to two fused protected power sections. The temperature., low suction pressure, high discharge
control supply is derived internally from the incoming pressure and temperature, high oil temperature, high
power supply. and low current, and low leaving liquid temperature.
• Unloading limit setpoints for high discharge pressure
The common input section also contains the control and compressor motor current.
circuit switch disconnect/emergency stop device, a • Liquid pull-down rate sensitivity (0.3°C to 3°C/minute
transformer (to provide the necessary 24V and 12V in 0.05°C increments).
supplies for the power supply board, and I/O board), • Status of load and unload timers, chilled liquid
control fuses, residual current circuit breaker, and pump.
terminals for a remote emergency stop device. • “Out of range” message.
• Up to 6 fault shut down conditions.
GB
PC155-100 Rev.6 (0510)
Accessories and Options
ENTRY – Enter set point changes, cancel inputs, ELECTRICAL OPTIONS
advance day, and change AM/PM. Power Supply Connection
SET POINTS – Chilled liquid temperature, chilled liquid Units are available with either single point or multi point
range, remote reset temperature range. power supply connections:
CLOCK – Time, daily or holiday start/stop schedule, Single Point - System Fused Disconnect Switches
manual override for servicing. A non-fused disconnect switch in the common input
section of the panel for connection of the customer
PRINT – Operating data or system fault shutdown provided single power supply. Internal factory wiring to
history for last six faults, printouts via a separate printer two door interlocked fused disconnect switches mounted
(by others). in the power sections. The control supply is derived
internally from the terminal block.
PROGRAM – Low leaving liquid temperature cutout, 300
to 600 second anti-recycle timer, lag compressor start Single Point - System Circuit Breakers
time delay, average motor current unload point, liquid
A terminal block in the common input section of the panel
temperature set-point reset signal from YORK ISN or
for connection of the customer provided single power
building automation system (by others) via:
supply. Internal factory wiring to two door interlocked
• Pulse width modulated (PWM) input for up to 22°C circuit breakers, mounted in the power sections. The
total reset as standard. control supply is derived internally from the terminal
• Optional Building Automation System interface input block.
card for up to 11°C reset using a 4 to 20 mA, 0 to 10
Multi-Point - System Circuit Breakers
Vdc input, or discrete reset input.
• [NOTE: The Standard microprocessor can be directly Two door interlocked circuit breakers, mounted in
connected to a YORK ISN Building Automation System the power sections, for connection of the customer
via the standard on-board RS485 communication port. provided power supplies. A non-fused disconnect switch
This Option also provides open system compatibility / emergency stop device (QCSD/ESD) in the common
with other communications networks (BACNET™, input section with termination for the customer (400 V,
MODBUS™ & LONMARK™) via interface through 2Ø, 50 Hz ) control supply.
standard onboard 485 or 232 port and an external
Building Automation System (BAS) / EMS Interface
YorkTalk Translator.]
• Additional functions (password protected) for Provides a means to reset the leaving chilled liquid
programming by a qualified service technician: temperature and from the BAS / EMS (Factory
• Cut-outs for low suction pressure, high discharge Mounted):
pressure, high oil temperature. Printed circuit board to accept 4 to 20 mA, 0 to 10 Vdc,
• High discharge pressure unload setpoint. or dry contact closure input from the BAS / EMS.
• Compressor motor current percent limit.
Note: A YORK ISN Building Automation System can
Motor Protection provide a Pulse Width Modulated (PWM) signal direct
The microprocessor motor protection provides high to the standard control panel via the standard on-board
current protection to ensure that the motor is not RS485 port.
damaged due to voltage, excess refrigerant or other
problems that could cause excessive motor current. E-Link Gateway
Interface to enable communication with building control
The microprocessor also provides low motor current systems using BACnet, MODBUS, LON or N2 protocols.
protection when it senses a motor current of less than See separate York documentation.
10% FLA.
ACCESSORIES
A motor protector module provides thermal and current
motor overload protection. The module also protects Anti-Vibration Mounts
against phase to phase current imbalance, over current, Optional 25mm deflection, open spring, anti-vibration
under current and phase rotation. mounts with levelling screw. Supplied loose for field
installation.
Optional floor mounting kit with 25 mm neoprene pads.
Supplied loose for field installation.
GB
PC155-100 Rev.6 (0510)
Power Factor Correction: Closed Transition Star/Delta
Factory mounted passive (static) correction capacitors to With the addition of closed transition contactors and
correct unit compressor power factors to 0.95 (depending resistors, the change over spike during starting can be
on operating conditions). reduced to nearer the star inrush level thus reducing the
risk of electrical interference during compressor start.
Flow Switch
Switch with 1 inch BSP thread suitable for 10 barg DWP Mechanical Gauge Kit
and having gold contacts for low voltage/current, to Factory fitted mechanical gauges for display of suction
protect unit from loss of water flow. Supplied loose for and discharge pressures, one complete set per
field installation, system.
or
Double Thickness Insulation
Factory fitted pressure differential switch on cooler.
The cooler is covered with 38 mm (1 ½ inch) flexible, UV-
Suction Shut-off Valves stable colour co-ordinated closed-cell, foam insulation
to prevent sweating in humid environment.
A ball valve in the low pressure (suction) pipework per
refrigerant circuit for isolation. Condenser extension / Manifold kits
Evaporator Kits Condenser extension kit simplifies connections to
customer pipework. Both options come with either
Models 0350 to 0725, horizontal water nozzles with
Victaulic coupling or welded Flange/companion flange
victaulic couplings (shipped loose), vertical nozzle cooler
kit.
with EN1092-1 Type 01.A welded/companion flange kit,
or horizontal nozzle cooler with EN1092-1 Type 01.A IP54
welded/companion flange kit. Models 0840 to 1110, ISO
Panel enclosure designed to IP54.
EN1092-1 Type 01.A welded/companion flange kit for
standard horizontal nozzle cooler (Note: vertical nozzle Language LCD and Keypad
coolers are not available).
Standard display language and keypad is English.
Low temperature Evaporator Kits French, German, Italian, Spanish, Portugese and
Hungarian are available as options.
Low temperature evaporator configurations are identical
to the standard or options detailed above. Sequence Controller:
Pressure Relief Valves Options Monitors mixed leaving chilled water or glycol temperature
from two to four units and controls to maintain required
• Pressure Relief (CE/PED) Serviceable Valve & Dual
mixed temperature whilst running the minimum number
Kit.
of units.
High & Low side vessels’ dual relief valves fitted with
3 way changeover valves and compressors’ single Printer
relief valves fitted with ball valves, to assist valve
Hand held printer for obtaining printout of unit operating
replacement during maintenance without loss of
data and history data.
refrigerant charge.
• Pressure Relief (CE/PED) Serviceable Valve & Dual Paint Overspray
Kit & Burst. Complete unit finish in Carribean Blue.
High & Low side vessels’ dual relief valves fitted with
bursting disks and 3 way changeover valves and Lifting Lug Kit
compressors’ single relief valves fitted with bursting One set of ISO Mk5 cam locks to enable safe and easy
disks and ball valves, to assist valve replacement during unit handling.
maintenance without loss of refrigerant charge.
Factory Witness Test:
Dual Pressure Switch To perform a customer functional witness test of cooling
Dual HP pressure cut-outs on both circuits. capacity only, test is carried out in factory test area.
Heat Pump Sensor Kit:
Capability of controlling condenser water off for heat
pump applications.
GB
PC155-100 Rev.6 (0510)
Operating Limitations
0350 0415 0480 0530
YLCS Models SA - HA - AA
Min. Max. Min. Max. Min. Max. Min. Max.
Liquid outlet temperature (water) °C 4.5 to 15
Liquid outlet temperature (glycol) (3) °C -12 to 15
Chilled Liquid outlet temperature range °C 3.3 to 8
Liquid Flow rate l/s 9.2 20.2 9.2 20.2 16.0 35.3 16.0 35.3
Pressure drop kPa 14.6 66.3 12.7 57.3 15.1 67.0 15.1 67.0
Maximum working pressure barg 10
Liquid outlet temperature °C 30 to 40 (SA) / 60 (HA)
Liquid outlet temperature range °C 3.3 to 8
Cooling
Total flow rate (2) l/s 10.0 23.8 13.6 33.9 13.6 33.9 16.1 40.6
Liquid
Pressure drop kPa 11.8 60.0 12.5 70.0 12.5 70.0 12.0 69.0
Maximum working pressure barg 10
Refrigerant System High pressure side barg 18 (SA) / 22 (HA/AA)
Power supply voltage 400 V, 3 Ø, 50 Hz (nominal) V 360 to 440
Recommended system water volume(1) l 1400 1700 1900 2000
Air temperature surrounding unit °C +4 to 46
0575 0620 0670 0750
YLCS Models SA - HA - AA
Min. Max. Min. Max. Min. Max. Min. Max.
Liquid outlet temperature (water) °C 4.5 to 15
Liquid outlet temperature (glycol) (3) °C -12 to 15
Chilled Liquid outlet temperature range °C 3.3 to 8
Liquid Flow rate l/s 16.0 35.3 16.0 35.3 19.8 43.6 19.8 43.6
Pressure drop kPa 17.6 77.0 17.6 77.0 14.7 65.0 16.6 73.0
Maximum working pressure barg 10
Liquid outlet temperature °C 30 to 40 (SA) / 60 (HA)
Liquid outlet temperature range °C 3.3 to 8
Cooling
Total flow rate (2) l/s 16.1 40.6 19.3 48.3 19.3 48.3 25.5 63.3
Liquid
Pressure drop kPa 12.0 69.0 12.4 70.0 12.4 70.0 12.3 69.0
Maximum working pressure barg 10
Refrigerant System High pressure side barg 18 (SA) / 22 (HA/AA)
Power supply voltage 400 V, 3 Ø, 50 Hz (nominal) V 360 to 440
Recommended system water volume(1) l 2200 2400 2600 2900
Air temperature surrounding unit °C +4 to 46
0860 0980 1120
YLCS Models SA - HA - AA
Min. Max. Min. Max. Min. Max.
Liquid outlet temperature (water) °C 4.5 to 15
Liquid outlet temperature (glycol) (3) °C -12 to 15
Chilled Liquid outlet temperature range °C 3.3 to 8
Liquid Flow rate l/s 21.3 51.0 21.3 51.0 25.0 60.0
Pressure drop kPa 20.1 97.4 20.1 97.4 21.6 99.4
Maximum working pressure barg 10
Liquid outlet temperature °C 30 to 40 (SA) / 60 (HA)
Liquid outlet temperature range °C 3.3 to 8
Cooling Total flow rate (2) l/s 25.5 63.3 25.5 63.3 25.5 63.3
Liquid
Pressure drop kPa 12.3 69.0 16.4
92.0 16.4 92.0
Maximum working pressure barg 10
Refrigerant System High pressure side barg 18 (SA) / 22 (HA/AA)
Power supply voltage 400 V, 3 Ø, 50 Hz (nominal) V 360 to 440
Recommended system water volume(1) l 3400 3800 4400
Air temperature surrounding unit °C +4 to 46
(1) Table shows minimum water volume of system
(2) Shared equally between condensers
(3) Glycol operation only available for HA/AA models
GB
PC155-100 Rev.6 (0510)
Refrigeration Flow Diagram (YLCS 0350 to 0620 Models)
Evaporator
PRV (2)
EVAPORATOR
TEV
SV T
LLV S
Condenser PRV (2)
Not fitted to
YLCS AA models
CONDENSER
Discharge
PRV (1) (2)
Compressor
PRV (2)
PT
SV s
COMPRESSOR NOTES:
Liquid Injection 1 - See Discharge Pressure Relief Valve Table
Option 2 - See Pressure Relief Valve Options Table
Start Bypass Option
Refrigeration Flow Diagram (YLCS 0670 to 1120 Models)
Evaporator
PRV (2)
EVAPORATOR
TEV
ECONOMISER
SV T
LLV S
Condenser PRV (2)
TEV Not fitted to
YLCS AA models
CONDENSER
S
Discharge
PRV (1) (2)
Compressor
PRV (2)
PT
SV s
COMPRESSOR NOTES:
Liquid Injection 1 - See Discharge Pressure Relief Valve Table
Option 2 - See Pressure Relief Valve Options Table
Start Bypass Option
10 GB
PC155-100 Rev.6 (0510)
Discharge Pressure Relief Valves Pressure Relief Valve Options
SA HA & AA Pressure Relief (CE/PED) Serviceable Valve
Model
System 1 System 2 System 1 System 2 Kit Kit and Burst
0350 No Valve No Valve No Valve No Valve
0415 Valve No Valve No Valve No Valve
0480 Valve Valve No Valve No Valve
0530 Valve Valve No Valve No Valve
0575 Valve Valve No Valve No Valve
Vessels
0620 Valve Valve No Valve No Valve
0670 Valve Valve No Valve No Valve
0750 Valve Valve No Valve No Valve
0860 Valve Valve No Valve No Valve
0980 Valve Valve Valve No Valve
1120 Valve Valve Valve Valve
Compressors & Discharge
valve sealed open
valve sealed open
YLCS SA & HA YLCS AA (remote air cooled condenser)
Low pressure liquid refrigerant enters the cooler tubes Low pressure liquid refrigerant enters the cooler tubes
and is evaporated and superheated by the heat energy and is evaporated and superheated by the heat energy
absorbed from the chilled liquid passing through the absorbed from the chilled liquid passing through the
cooler shell. Low pressure vapour enters the compressor cooler shell. Low pressure vapour enters the compressor
where pressure and superheat are increased. High where pressure and superheat are increased. High
pressure vapour is passed through the oil separator pressure vapour is passed through the oil separator
in the compressor where compressor oil is removed in the compressor where compressor oil is removed
and reticulated to the compressor. High pressure and reticulated to the compressor. The high pressure
superheated refrigerant enters the condenser shell superheat refrigerant enters the remote air cooled
where heat is rejected to the condenser water passing condenser where heat is rejected via the condenser
through the tubes. The fully condensed and subcooled coil & fans The fully condensed and subcooled liquid
liquid leaves the condenser and enters the expansion leaves the condenser and enters the expansion valve,
valve, where pressure reduction and further cooling where pressure reduction and further cooling takes
takes place. The low pressure liquid refrigerant then place. The low pressure liquid refrigerant then returns
returns to the cooler. to the cooler.
GB 11
PC155-100 Rev.6 (0510)
Selection Guide - Water
Data Required 2. Select Model and Read the Performance
To select a YORK YLCS chiller the following information From the capacity table, model YLCS0415SA can be
is required: selected with the following performance.
Cooling Capacity: 411 kW
1. Design cooling capacity. Compressor Input Power: 96 kW
2. Chilled water entering and leaving temperatures. Heat Rejection 502 kW.
3. Condenser water entering and leaving temperature.
3. Determine the Flow Rate
4. Chilled water flow (l/s) if one of the temperatures in
Cooling Capacity(kW) =
(2) is unknown.
Range(°C) x chilled water(l/s) x 4.18
5. Condenser water flow (l/s) if one of the temperatures
411
in (3) is unknown. = = 19.67 l/s
5 x 4.18
Determine the capacity or water flow from:
Heat Rejection(kW) =
Cooling Capacity (kW) = Range(°C) x condenser water(l/s) x 4.18
Range (°C) x chilled water (l/s) x 4.18 502
= = 24.02 l/s*
Determine the heat rejection or water flow from: 5 x 4.18
* Total unit flow rate.
Heat Rejection (kW) =
Range (°C) x condenser water (l/s) x 4.18 4. Correct the Data
NOTE: If condenser coolant is glycol solution allow 2K Fouling Factor
increase in condensing temperature to estimate the The cooling capacity and the compressor input should
cooling capacity & power impact on your selection. be corrected using the factors given below, if applicable.
Recalculate flow rates as required.
Chiller Selection Method
1. Determine the correct size of chiller by selecting Flow Rate
the model which most closely matches the required When the water Inlet/Outlet temperature difference is not
capacity at the design conditions of leaving 5°C, correct the flow rate by the following formula:
water temperature and condenser leaving water
5 (°C) x Flow Rate
temperature. Corrected Flow Rate =
Temp. Difference(°C)
2. Apply correction factors for fouling factor to the
capacity and power values from the capacity tables. The corrected Flow Rate must be confirmed to be within
Ensure the corrected capacity is still sufficient for the working range.
requirements.
3. Using the corrected capacity of the selected chiller 5. Determine the Pressure Drops
adjust the design temperature range, or flow rate, to Calculate the pressure drops using the graphs.
balance the formulae shown above.
Evaporator pressure drop at a flow rate of 19.67 l/s
4. Physical and electrical data can now be determined would be 54 kPa.
from the tables.
5. Always re-check that selections fall within the Condenser pressure drop at a flow rate of 24.02 l/s
operating limitations. would be 37 kPa.
YLCS Sample Selection 6. Check the Data is within Limits
1. Confirm the system requirements The data is within the unit operating limitations.
Cooling Capacity: 400 kW
Chilled Water Inlet Temperature: 12 °C
Chilled Water Outlet Temperature: 7 °C
Condenser Water Inlet Temperature: 30 °C
Condenser Water Outlet Temperature: 35 °C
Evaporator and Condenser Fouling Factors: 0
12 GB
PC155-100 Rev.6 (0510)
Cooler Pressure Drop (figure 3) Condenser Pressure Drop (figure 4)
100 0 100
90 98 11 90 0
20 -112
80 -0 80
60
70 08 70 80
09
60 0
53
60
-0
50 50
Pressure Drop [kPa] Pressure Drop [kPa]
80
04
40 40
30 30
0
50 62
03 -0
20 75
05 20
50 0 0 0
15 07 70 48 5
57 67 86
04 06 50 -0 -0 -0
-0
03 15 20 50
30
04 05 06 07
10 10
8 10 20 30 40 50 60 70 8 10 20 30 40 50 60 70
Flow Rate [l/s] Flow Rate [l/s]
Pressure Drop Calculations (Table 3)
Pressure drop calculated as following: with Δp : pressure drop [kPa]
qv : flow rate [l/s]
Δp = a . qv ^ b a, b: factors (see table here below)
Evaporator Pressure Drop Calculation Condenser Pressure Drop Calculation
Model
Factor a Factor b Factor a Factor b
0350 0.2072 1.9192 0.1583 1.8725
0415 0.1835 1.9109 0.0903 1.8886
0480 0.0796 1.8898 0.0903 1.8886
0530 0.0796 1.8898 0.0619 1.8948
0575 0.0975 1.8719 0.0619 1.8948
0620 0.0975 1.8719 0.0461 1.8889
0670 0.0527 1.8854 0.0461 1.8889
0750 0.0608 1.8784 0.0265 1.8956
0860 0.0813 1.8027 0.0265 1.8956
0980 0.0813 1.8027 0.0354 1.8956
1120 0.0789 1.7436 0.0354 1.8956
Fouling Factors (table 4)
COOLER CONDENSER
Fouling Factor Comp. Input Fouling Factor Comp. Input
Capacity Factor Capacity Factor
m² °C/kW Factor m² °C/kW Factor
0.044 1.000 1.000 0.044 1.000 1.000
0.088 0.987 0.995 0.088 0.987 1.023
0.176 0.964 0.985 0.176 0.955 1.068
0.352 0.915 0.962 0.308 0.910 1.135
GB 13
PC155-100 Rev.6 (0510)
Selection Guide - Glycol (HA Models Only)
Data Required 2. Select Model and Read the Performance
To select a YORK YLCS-HA chiller the following From the capacity table, model YLCS0980HA can be
information is required: selected with the following performance.
1. Design cooling capacity.
Cooling Capacity: 646 kW
2. Chilled glycol entering and leaving temperatures. Compressor Input Power 182 kW
3. Condenser water entering and leaving temperature. Heat Rejection 819 kW.
4. Chilled glycol flow (l/s) if one of the temperatures in
Other design conditions applying are:
(2) is unknown.
5. Condenser water flow (l/s) if one of the temperatures Fouling factor 0.44 °C/kW
in (3) is unknown. Glycol concentration 30%
Determine the capacity or water flow from: For a -5°C ethylene glycol leaving temperature the
recommended concentration from table 6 is 30%.
l/s chilled liquid x °C range
Cooling capacity kW =
Glycol Factor From the design glycol concentration (30%) no corrections
of capacity and power are requires (table 7).
Determine the heat rejection or water flow from:
For the glycol concentration specified and a leaving
l/s condenser water x °C range liquid temperature of -5°C the glycol factor is 0.2583
Heat Rejection (kW) = (table 5).
Glycol Factor
NOTE: If condenser coolant is glycol solution allow 2K 3. Determine the Flow Rate
increase in condensing temperature to estimate the l/s chilled liquid x °C range
cooling capacity & power impact on your selection. Cooling capacity kW =
Glycol Factor
Chiller Selection Method
1. Determine the correct size of chiller by selecting 646 x 0.2583
Chilled liquid Flow rate = = 33.37 l/s
the model which most closely matches the required 5
capacity at the design conditions of leaving
liquid temperature and condenser leaving water l/s condenser water x °C range
temperature. Heat Rejection (kW) =
Glycol Factor
2. Apply correction factors for fouling factor to the
capacity and power values from the capacity tables.
Ensure the corrected capacity is still sufficient for Показано початок документа. Повний текст — у PDF за посиланням вище.
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