York YGWH 115 Guide

YGWH WATER COOLED SCREW CHILLERS
STYLE A
Cooling Capacities: 416 kW to 1328 kW (118 to 378 TR)
YGWH WATER COOLED
SCREW CHILLERS
Installation, Commissioning, Operation & Maintenance FORM NO.: 6S6I-B01C-EOMA-EN(0318)
TO BE COMPLETED WHEN PICTURE IS AVAILABLE

I
EN
Form 6S6I-B01C-EOMA-EN (0318)
Table of Contents
1. General Chiller Information and Safety ... ... . 1-1
Introduction 1-1
Warranty 1-1
Standards for Safety 1-1
Fluorinated Greenhouse Gases 1-1
Responsibility for Safety 1-1
About this manual 1-2
Misuse of Equipment 1-2
Emergency Shutdown 1-3
Safety Labels 1-3
Material Safety Data 1-4
2. Specication ... ... ... ... ... ... ... ... ... ... . 2-1
Sound Standards 2-1
Compressor 2-1
Motor Starting 2-1
Capacity Control 2-1
Oil Separator 2-2
Refrigerant Circuit 2-2
Condenser 2-2
Evaporator 2-2
Power Panel 2-2
Control Panel 2-2
Control System 2-2
Accessories and Options 2-2
Nomenclature 2-3
Component Location Diagram 2-3
Refrigerant Flow Diagram 2-4
3. Rigging, Lifting, Handling and Storage ... ... . 3-1
Weights and Weight Distribution 3-1
Delivery and Storage 3-2
Inspection 3-2
4. Installation... ... ... ... ... ... ... ... ... ... ... . 4-1
Location Requirements 4-1
Installation of Vibration Isolators 4-1
YGWH Floor Layout Diagram 4-3
Piping Connections 4-4
Water Treatment 4-4
Pipework Arrangement 4-5
Connection Types and Sizes 4-5
Refrigerant Relief Valve Piping 4-5
Electrical Connection 4-5
Condenser Cooling Water System 4-5
Direct Pressure Control 4-6
Inlet Temperature Control 4-6
Variable Primary Flow 4-6
Power Wiring 4-6
Single Point Power Supply Wiring 4-6
Control Panel Wiring 4-7
220 Vac Outputs 4-7
24 Vdc Inputs 4-7
Customer Connections 4-8
5. Commissioning ... ... ... ... ... ... ... ... ... . 5-1
Preparation 5-1
Inspection 5-1
Refrigerant Charge 5-1
Valves 5-1
Isolation / Protection 5-1
Control Panel 5-1
Power Connections 5-1
Earthing 5-1
Oil heater 5-1
Water System 5-1
Low Temperature Brine Chiller 5-1
Flow Switch 5-1
Control Panel Power Supply 5-2
Programmed Options 5-2
Programmed Settings 5-2
Time and Date 5-2
Start-up/Stop Programming 5-2
Setpoints 5-2
First Time Start-Up 5-2

II EN
Form 6S6I-B01C-EOMA-EN (0318)
6. Unit Operation.. ... ... ... ... ... ... ... ... ... . 6-1
General 6-1
Control System 6-1
OptiView™ LT Panel 6-1
Main (Home) Page 6-2
Function Page 6-5
View Pages 6-6
CongurePages 6-7
History Page 6-9
Schedule Page 6-12
Setting Pages 6-13
7. Maintenance ... ... ... ... ... ... ... ... ... ... . 7-1
General Requirements 7-1
Daily Maintenance 7-1
Unit Status 7-1
Refrigerant charging and leak checking 7-1
Oillter 7-2
Condenser and Evaporator 7-2
Working conditions 7-4
Scheduled Maintenance 7-4
8. Trouble Shooting... ... ... ... ... ... ... ... ... . 8-1
Competent Persons Trouble Shooting Guide 8-1
Safety Faults, Cycling Stops and Warnings 8-2
Safety Faults 8-2
Cycling Stops 8-5
Warnings 8-6
Sensor Calibration Charts 8-8
9. Technical Data ... ... ... ... ... ... ... ... ... ... . 9-1
Operational Limits 9-1
Pressure Drop 9-1
Electrical Connections 9-2
Dimensions YGWH115, YGWH145,
YGWH180, YGWH225 9-3
Dimensions YGWH260, YGWH300,
YGWH330, YGWH375 9-4
10. Spare Parts. ... ... ... ... ... ... ... ... ... ... 10-1
Recommended Spares 10-1
11. Decommissioning, Dismantling
and Disposal ... ... ... ... ... ... ... ... ... ... 11-1
General 11-1

1-1
EN
Form 6S6I-B01C-EOMA-EN (0318)
1. General Chiller Information and Safety
Introduction
YORK YGWH units are manufactured to the highest
design and construction standards to ensure high
performance, reliability and adaptability to all types of
air conditioning installations.
The unit is intended for cooling water or glycol solutions
and is not suitable for purposes other than those
speciedinthismanual.
This manual contains all the information required for
correct installation and commissioning of the unit,
together with operating and maintenance instructions.
The manuals should be read thoroughly before
attempting to operate or service the unit.
All procedures detailed in the manuals, including
installation, commissioning and maintenance tasks
mustonlybeperformedbysuitablytrainedandqualied
personnel.
The manufacturer will not be liable for any injury
or damage caused by incorrect installation,
commissioning, operation or maintenance resulting
from a failure to follow the procedures and instructions
detailed in the manuals.
Warranty
Johnson Controls warrants all equipment and materials
against defects in workmanship and materials for a
period of eighteen months from date of shipment, or
twelve months from commissioning, whichever comes
rst,unlessextendedwarrantyhasbeenpurchasedas
part of the contract.
The warranty is limited to parts only replacement and
shipping of any faulty part, or sub-assembly, which has
failed due to poor quality or manufacturing errors. All
claims must be supported by evidence that the failure
has occurred within the warranty period, and that the
unit has been operated within the designed parameters
specied.
All warranty claims must specify the unit model, serial
number, order number and run hours/starts. Model
and serial number information is printed on the unit
identicationplate.
Theunitwarrantywillbevoidifanymodicationtothe
unit is carried out without prior written approval from
Johnson Controls.
For warranty purposes, the following conditions must
besatised:
• The initial start of the unit must be carried out by
trained personnel from an Authorized Johnson
Controls Service Centre.
• Only genuine Johnson Controls approved spare
parts, oils, coolants, and refrigerants must be
used.
• All the scheduled maintenance operations detailed
inthismanualmustbeperformedatthespecied
timesbysuitablytrainedandqualiedpersonnel.
Failure to satisfy any of these conditions will
automatically void the warranty.
Standards for Safety
YGWH units are designed and manufactured within an
ISO 9001 accredited organisation and in conformity
with the following safety standards:
• China Refrigeration and Air Conditioning
Association
• NB/T 47012
• GB/T18430.1
• GB25131
Fluorinated Greenhouse Gases
• This equipment contains uorinated greenhouse
gases covered by the Kyoto Protocol.
• The global warming potential of the refrigerant
(R134A) used in this unit is 1430.
• The refrigerant quantity is stated in the Physical
Data table of this document.
• The uorinated greenhouse gases in this
equipment may not be vented to the atmosphere.
• This equipment should only be serviced by
qualiedtechnicians.
Responsibility for Safety
Every care has been taken in the design and
manufacture of the unit to ensure compliance with
the safety requirements listed above. However, the
individual operating or working on any machinery is
primarily responsible for:
Personal safety, safety of other personnel, and the
machinery.
Correct utilization of the machinery in accordance with
the procedures detailed in the manuals.

1-2 EN
Form 6S6I-B01C-EOMA-EN (0318)
About this manual
The following symbols are used in this document to
alert the reader to areas of potential hazard.
A WARNING is given in this document to
identify a hazard, which could lead to personal
injury. Usually an instruction will be given,
together with a brief explanation and the
possible result of ignoring the instruction.
A CAUTION identies a hazard which could
lead to damage to the machine, damage to
other equipment and/or environmental
pollution. Usually an instruction will be given,
together with a brief explanation and the
possible result of ignoring the instruction.
A NOTE is used to highlight additional
information, which may be helpful to you but
where there are no special safety implications.
The contents of this manual include suggested best
working practices and procedures. These are issued
for guidance only, and they do not take precedence
over the above stated individual responsibility and/or
local safety regulations.
This manual and any other document supplied with
the unit are the property of Johnson Controls which
reserves all rights. They may not be reproduced, in
whole or in part, without prior written authorization from
an authorized Johnson Controls representative.
Misuse of Equipment
Suitability for Application
The unit is intended for cooling and heating water or
glycol solutions and is not suitable for purposes other
thanthose speciedinthese instructions.Anyuse of
the equipment other than its intended use, or operation
of the equipment contrary to the relevant procedures
may result in injury to the operator, or damage to the
equipment.
The unit must not be operated outside the design
parametersspeciedinthismanual.
Structural Support
Structural support of the unit must be provided as
indicated in these instructions. Failure to provide proper
support may result in injury to the operator, or damage
to the equipment and/or building.
Mechanical Strength
The unit is not designed to withstand loads or stresses
from adjacent equipment, pipework or structures.
Additional components must not be mounted on the
unit.Anysuchextraneousloadsmaycausestructural
failure and may result in injury to the operator, or
damage to the equipment.
General Access
There are a number of areas and features, which may
be a hazard and potentially cause injury when working
on the unit unless suitable safety precautions are taken.
It is important to ensure access to the unit is restricted
tosuitablyqualiedpersonswhoarefamiliarwiththe
potential hazards and precautions necessary for safe
operation and maintenance of equipment containing
high temperatures, pressures and voltages.
Pressure Systems
The unit contains refrigerant vapour and liquid under
pressure, release of which can be a danger and cause
injury. The user should ensure that care is taken
during installation, operation and maintenance to avoid
damage to the pressure system. No attempt should
be made to gain access to the component parts of the
pressure system other than by suitably trained and
qualiedpersonnel.
Electrical
The unit must be earthed. No installation or maintenance
work should be attempted on the electrical equipment
withoutrstswitchingpowerOFF,isolatingandlocking
o󰀨 the power supply. Servicing and maintenance on
live equipment must only be performed by suitably
trainedandqualiedpersonnel.Noattemptshouldbe
made to gain access to the control panel or electrical
enclosures during normal operation of the unit.

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Form 6S6I-B01C-EOMA-EN (0318)
Refrigerants and Oils
Refrigerants and oils used in the unit are generally
nontoxic,non-ammableandnon-corrosive,andpose
no special safety hazards. Use of gloves and safety
glasses is, however, recommended when working on
the unit. The build up of refrigerant vapour, from a
leakforexample,doesposeariskofasphyxiationin
connedor enclosedspacesand attentionshouldbe
given to good ventilation.
High Temperature and Pressure Cleaning
High temperature and pressure cleaning methods (e.g.
steam cleaning) should not be used on any part of the
pressure system as this may cause operation of the
pressure relief device(s). Detergents and solvents,
which may cause corrosion, should also be avoided.
Emergency Shutdown
Incaseofemergency,thecontrolpanelisttedwithan
emergency stop button (RED) when pressed it removes
the electrical supply to the control circuit thus shutting
down the unit. The button is locked in the closed (OFF)
position and has to be rotated to reset it.
Safety Labels
The following labels are xed to each unit to give
instruction, or to indicate potential hazards which may
exist.
White symbol on blue background
For safe operation, read the instructions
rst
Black symbol on yellow background
Warning: This machine may start
automatically without prior warning
Black symbol on yellow background
Warning: Hot surface
Black symbol on yellow background
Warning: Safety relief valve may discharge
gas or liquid without prior warning
Black symbol on yellow background
Warning: Isolate all electrical sources of
supply before opening or removing the
cover,aslethalvoltagesmayexist
Black symbol on yellow background
General attention symbol

1-4 EN
Form 6S6I-B01C-EOMA-EN (0318)
Material Safety Data
Refrigerant Data:
Safety Data R134a
Toxicity Low
In contact with skin Liquid splashes or spray may cause freeze burns. Unlikely to be hazardous by skin
absorption.R134amaybeslightlyirritantandliquidhasadegreasinge󰀨ect.Thawa󰀨ected
areas with water. Remove contaminated clothing carefully — may adhere to skin in case of
freezeburns.Washa󰀨ectedareaswithplentyofwarmwater.Ifsymptomsoccur(irritationor
blistering) obtain medical attention.
In contact with eyes Vapourhasnoe󰀨ect.Liquidsplashesorspraymaycausefreezeburns.Immediatelyirrigate
with eyewash solution or clean water for at least 10 minutes. Obtain immediate medical
attention.
Ingested Highly unlikely to occur — but should this occur freeze burn will occur. Do not induce
vomiting. Provided patient is conscious, wash mouth with water and give about 250 ml (0.5
pint) to drink. Obtain immediate medical attention.
Inhalation Highatmosphericconcentrationsmayhaveananaesthetice󰀨ect,includinglossof
consciousness.Veryhighexposuresmaycauseanabnormalheartrhythmandprove
suddenly fatal.
Athigherconcentrationthereisadangerfromasphyxiationduetoreducedoxygencontent
ofatmosphere.Removepatienttofreshair,keepwarmandatrest.Administeroxygenif
necessary.Applyarticialrespirationifbreathinghasceasedorshowssignsoffailing.In
eventofcardiacarrestapplyexternalcardiacmassage.Obtainimmediatemedicalattention.
Further medical advice Symptomatic and supportive therapy is indicated. Cardiac sensitisation has been described
which may, in the presence of circulating catecholamines such as adrenalin, give rise to
cardiacarrhythmia’sandsubsequentarrestfollowingexposuretohighconcentrations
Longtermexposure Alifetimeinhalationstudyinratshasshownthatexposureto50,000ppmresultedinbenign
tumoursofthetestis.Thisisnotconsideredtobeofrelevancetohumansexposedto
concentrationsatorbelowtheoccupationalexposurelimit.
Occupationalexposure
limits
Recommended limit: 1000 ppm v/v - 8 hr TWA.
Stability Notspecied.
Conditions to avoid Useinpresenceofnakedames,redhotsurfacesandhighmoisturelevels.
Hazardous reactions May react violently with sodium, potassium, barium and other alkali and alkaline earth
metals. Incompatible materials: Magnesium and alloys containing more then 2%
magnesium.
Hazardous
decomposition products
Halogen acids by thermal decomposition and hydrolysis.
General precautions Avoid inhalation of high concentrations of vapours. Atmospheric concentrations should be
minimisedandkeptaslowasreasonablypracticablebelowtheoccupationalexposurelimit.
Thevapourisheavierthanairandcollectsatlowlevelandinconnedareas.Ventilateby
extractionatlowestlevels.
Respiratory protection Wheredoubtexistsonatmosphericconcentration,HSEapprovedbreathingapparatus
should be worn. This should be self contained or of the long breather type.
Storage Keepcontainersdryandinacoolplaceawayfromrerisk,directsunlight,andallsources
ofheatsuchasradiators.Keepattemperaturesnotexceeding45°C.
Protective clothing Wear overalls, impervious gloves and goggles/face protection.
Spill/leak procedure Ensure suitable personal protective clothing and respiratory protection is worn. Provided it
is safe to do so, isolate the source of the leak. Allow small spillage’s to evaporate provided
there is suitable ventilation.
Large spillage’s: Ventilate area. Contain spillage’s with sand, earth or any suitable absorbent
material. Prevent liquid from entering drains, sewers, basements and work pits since vapour
maycreateasu󰀨ocatingatmosphere.

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Form 6S6I-B01C-EOMA-EN (0318)
Refrigerant Data:
Safety Data R134a
Disposal Best to recover and recycle. If this is not possible, destruction is to be in an approved facility
whichisequippedtoabsorbandneutraliseacidsandothertoxicprocessingproducts.
Fireextinguishingdata Non-ammableatatmosphericconditions.
Containers Fireexposedcontainersshouldbekeptcoolwithwatersprays.Containersmayburstif
overheated.
Fireghtingprotective
equipment
Selfcontainedbreathingapparatusandprotectiveclothingmustbeworninreconditions.
Refrigerant Oil Data
Safety Data YORK 'L' Oil
Classication Non-hazardous
In contact with skin Minimallyirritating.Norstaidnecessary.Exercisereasonablepersonalcleanliness
includingcleansingexposedskinareasseveraltimesdailywithsoapandwater.Launder
soiled work clothes at least weekly.
In contact with eyes Flush eyes with eyewash solution or clean water for 15 minutes and consult a physician.
Ingested May cause nausea and diahorrhea. Obtain immediate medical attention.
Inhalation If oil mist is inhaled, remove to fresh air and consult a physician.
Occupationalexposure
limits
Not determined.
Stability Stable but hygroscopic - store in sealed containers.
Conditions to avoid Strongoxidisers,causticoracidsolutions,excessiveheat.Maydegradesomepaintsand
rubber materials.
Hazardous
decomposition
Notfully,Analogouscompoundsevolvecarbonmonoxide,carbondioxideandother
unidentiedfragmentswhenburned.Burningmayevolveirritating/noxiousfumes.
Respiratory protection Use in well ventilated areas - ventilate locally.
Protective clothing Goggles or face shield should be worn. Gloves not necessary, but recommended, especially
forprolongedexposure.
Spill / Leak procedure Wear suitable protective equipment. Especially goggles. Stop source of spill. Use absorbent
materialstosoakupuid(i.e.sand,sawdustandcommerciallyavailablematerials).
Disposal Incinerate the oil and all associated wastes in an approved facility in accordance with local
laws and regulations governing oily wastes.
Fireextinguishingdata Flashpointover300°C.Usedrychemical,carbondioxideorfoam.Sprayingwateronhotor
burning liquid may cause frothing or splashing.
If a leak or spill has not ignited use water spray to disperse the vapours and to provided
protection for persons attempting to stop the leak.
Containers Fireexposedcontainersshouldbekeptcoolwithwatersprays.
Fireghtingprotective
equipment
Selfcontainedbreathingapparatusshouldbeworninreconditions.
Thermal & Acoustic Materials Data
Health Hazard & First Aid ToxicityIndex<10toNES713Issue3(1991):Non-hazardous,non-toxic.Norstaid
necessary.
Stability / Reactivity Stable.
Handling / Use / Disposal No special handling precautions required. Dispose of according to local laws and regulations
governing non-biodegradable non-hazardous solid wastes.
Fire&Explosion FlammabilityratingClass1toBS476pt7:Non-ammable.Ifforcedtoburn,combustion
productsaretypicallyover95%carbondioxideandcarbonmonoxide.

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Form 6S6I-B01C-EOMA-EN (0318)
2. Specication
YGWH water cooled chillers 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 R134a and oil in the
independent refrigerant circuit. After assembly, an
operationaltestisperformedwithwaterowingthrough
theheatexchangertoensurethattherefrigerantcircuit
operate correctly.
YGWH units are designed and manufactured within an
EN ISO 9001 accredited organisation and in conformity
with the following safety standards:
• NB/T 47012
• GB/T18430.1
• GB25131
YGWH units are designed to work independently, or in
conjunction with other equipment via Modbus building
management systems or other automated control
systems.
Sound Standards
The sound data for YGWH water cooled chillers
conforms to, and is rated in accordance with ARI
Standard 575.
Compressor
A semi-hermetic screw compressor is provided
to ensure high operational e󰀩ciency and reliable
performance. Capacity control is achieved through
slide valve. The compressor is a positive displacement
type characterized by two helically grooved rotors,
which are manufactured from forged steel. The 50 Hz
motor operates at 2950 rpm to directly drive the male
rotor, which in turn drives the female rotor on a light
lmofoil.
Each compressor is direct drive, semi-hermetic, rotary
twin screw type and includes the following items:
• two screw rotors, manufactured from forged steel;
• a cast iron compressor housing precisely
machined;
• a discharge check valve can prevent rotor backspin
during shutdown;
• asuctionvapourcooled,highe󰀩cientandreliable
semi- hermetic motor has overload protection:
thermistor and current overload protection.
Refrigerant vapour is sucked into the void created by
the unmeshing of the male and female rotors. Further
meshing of the rotors closes the rotor threads to the
suction port and progressively compresses the vapour
inanaxialdirectiontothedischargeport.Thevapour
is compressed in volume and increased in pressure
beforeexitingatadesignedvolumeatthedischarge
end of the rotor casing. Since the intake and discharge
cycles overlap, a resulting smooth ow of vapour is
maintained.
The rotors are housed in a cast iron compressor housing
precision machined to minimize the void between the
housing and the rotors. Contact between the male and
female rotor is primarily rolling on a contact band on
each of the rotor's pitch circle. It result in virtually no
rotor wear and increased reliability.
The compressor incorporates a complete anti- friction
bearing design for reduced power input and increased
reliability. Four separated, cylindrical, roller bearings
handle radial loads. Angular-contact ball bearings
handle axial loads. Together they maintain accurate
rotor positioning at all pressure ratios, thereby
minimizingleakageandmaintaininge󰀩ciency.
Motor cooling is provided by refrigerant vapour from
the evaporator owing across the motor. Over load
protection includes overheat and current overload
protections.
Motor Starting
Star/Delta (S/D) open transition starter is used for
compressor motor starting. The S/D starter utilizes 3
motor contactors and a starting relay. The starter allows
inrushcurrenttobelimitedtoapproximately33%LRA
for the rst 4~10 seconds, with current changing to
normal running current when the Delta connection is
established
Capacity Control
The compressors should start at the minimum
load position and provide a capacity control within
25%~100% by using one continuous function slide
valve.
The capacity control valve regulating spring returns
the valve to the minimum load position to ensure
compressor starting at the minimum motor load.

2-2 EN
Form 6S6I-B01C-EOMA-EN (0318)
Oil Separator
The YGWH condenser has a built-in internal oil
separator, to remove oil from the refrigerant and return
it back to the compressor for lubrication. An oil sump
is located in the oil separator, along with an oil level
switch to assure the continuous oil supply.
Alllubricantmustowthrougharenewablelterbefore
it is supplied to compressor to lubricate the bearings
and the rotors.
After lubricating the bearings, the oil is injected
through an orice located in the closed thread near
the suction end of the rotors. The oil is automatically
injected because of the pressure di󰀨erence between
the discharge pressure and the pressure at the suction
end of the rotors. This lubricates the rotors as well as
provides an oil seal against leakage around the rotors to
assurerefrigerantcompression(volumetrice󰀩ciency).
An oil heater is located in the oil sump inside the
condenser. The heater is thermostatically controlled to
prevent refrigerant condensation into lubricant during
shutdown.
Refrigerant Circuit
Each unit has an independent refrigeration circuit, the
liquidlinecomponentsinclude:alter,amanualshut-
o󰀨valveandthrottlingdevice(EEVorxedorice).
Condenser
The water-cooled condenser is a cleanable shell and
tube type, with 19 mm thermally enhanced seamless
copper tubes.
The condenser shell is equipped with a pressure relief
valve set to 20.7 Bar. The condenser is manufactured
and tested according to NB/T 47012.
The design working pressure is 10 bar on the
waterside. The water connections are victaulic grooves
asstandard,HG20615weldedangesareavailableas
an option.
The external surface of the condenser shell on Heat
Pump and Heat Recovery Units, is covered with 19 mm
thickexibleclosed-cellfoam.
Evaporator
Theevaporatorisashellandtube,fallinglmtypeheat
exchangerequippedwithapressurereliefvalvesetto
20.7 Bar.
The evaporator is manufactured and tested according
to NB/T 47012.
Theexternalsurfaceoftheevaporatorshelliscovered
with 19 mm thick exible closed-cell foam. The
water connections are victaulic grooves as standard,
HG20615weldedangesareavailableasanoption.
Power Panel
All controls are factory-wired and function tested. The
panel enclosures are designed according to IP22 and
are manufactured from powder-painted steel.
The panel is divided into power supply section, control
section and starter section. The power supply section
and control section have separated hinged, latched,
and gasket sealed doors.
Control Panel
The control panel contains the main PCB (unit
monitoring and control (external inputs / outputs))
and the OptiView™ LT Panel (HMI). The PCBs within
the control and power panel function as a single
microprocessor.DataexchangebetweenthePCBsis
via a RS485 communication bus.
Control System
The microprocessor control system is capable of
single circuit control to maintain liquid temperature
within programmed limits, as well as system safeties,
displaying status, and daily schedules.
Remotestartingandowandequipmentinterlockcan
beaccomplishedbyeldsuppliedcontacts.
Remote indications of alarms, run status and pump
control are available as outputs.
Compressor starting/stopping and loading/unloading
decisions are performed by the microprocessor to
maintain leaving liquid temperature.
Accessories and Options
Flow Switch
A paddle type water ow switch with 10.3 bar DWP,
which is applicable to chilled water and cooling water
lines.
Rubber Isolator Pads
Rubber isolators for mounting under the tube sheets
(eldmounted).
Spring Isolators
Level adjustable, spring and cage type isolators for
mountingunderthetubesheets(eldmounted).

2-3
EN
Form 6S6I-B01C-EOMA-EN (0318)
Nomenclature
1 2 3 4 5 6 7 8 9 10 11 12
BASE PRODUCT TYPE NOMINAL CAPACITY APPLICATION TYPE REFRIGERANT VOLTAGE DESIGN / DEVELOPMENT LEVEL
Y: York # # # TR C: Comfort Cooling A: HFC-134a 5 0 : 380 / 3 / 50 A: Design Series
G: GT Compressor :115, 145, 180, 225, D: Ice storage dual conditions 53: 400 / 3 / 50
W: Water cooled 260, 300, 330, 375 5 5 : 415 / 3 / 50
H: High Efficiency
YGWH180CA50A
Component Location Diagram
1
2
34
5
6
7
8
1 Condenser 5 Emergency Stop Button
2 Evaporator 6 Power Panel
3 Compressor 7 Circuit Breaker
4 Control Panel 8 Pressure Relief Valve

2-4 EN
Form 6S6I-B01C-EOMA-EN (0318)
Refrigerant Flow Diagram
Low pressure liquid refrigerant enters the cooler and is evaporated and superheated by the heat energy absorbed
from the chilled water passing through the cooler tubes. The low pressure vapour is returned to the compressor
where the pressure and temperature are increased. The high pressure and temperature refrigerant vapour enters the
condenser and is condensed. The fully condensed and subcooled liquid refrigerant then enters the throttling device
where pressure reduction and further cooling takes place before returning to the cooler.
COMP
OF
SA
COND
RF
EVAP
EEV [NB1]
FO [NB2]
OE
COMP Compressor
COND Condenser
EVAP Evaporator
EEV Electronic Expansion Valve
FO Fixed Orifice
OE Oil Eductor
OF Oil Filter
RF Refrigerant Filter
SA Muffler
[NB1] Models 115 to 260
[NB2] Models 300 to 375

3-1
EN
Form 6S6I-B01C-EOMA-EN (0318)
3. Rigging, Lifting, Handling and Storage
RIGGING AND LIFTING SHOULD ONLY BE DONE BY A PROFESSIONAL RIGGER IN ACCORDANCE
WITH A WRITTEN RIGGING AND LIFTING PLAN. THE MOST APPROPRIATE RIGGING AND LIFTING
METHOD WILL DEPEND ON JOB SPECIFIC FACTORS, SUCH AS THE RIGGING EQUIPMENT
AVAILABLE AND SITE NEEDS. THEREFORE, A PROFESSIONAL RIGGER MUST DETERMINE THE
RIGGING AND LIFTING METHOD TO BE USED, AND IT IS BEYOND THE SCOPE OF THIS MANUAL
TO SPECIFY RIGGING AND LIFTING DETAILS. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD
RESULT IN DEATH, SERIOUS INJURY OR EQUIPMENT DAMAGE.
Weights and Weight Distribution
Refertotheunitnameplateforunitshippingweight.Notethatweightmayvarydependingonunitcongurationatthe
time of lifting. Standard weights and weight distribution are given below:
COMP
EVAP
COND
POWER CTRL
F1 F2
R1 R2
YGWH
Model Shipping Operating F1 F2 R1 R2
115 3906 4307 1124 1160 996 1027
145 4588 5089 1317 1356 1190 1226
180 5632 6270 1451 1479 1654 1686
225 6040 6839 1579 1620 1796 1843
260 7102 7802 2118 2148 1856 1883
300 8053 8882 2051 2077 2362 2392
330 8242 9271 2490 2527 2111 2143
375 8837 9948 2278 2310 2662 2699
Weight (kg)
Point Weight (kg)

3-2 EN
Form 6S6I-B01C-EOMA-EN (0318)
Delivery and Storage
To ensure consistent quality and maximum reliability,
all units are tested and inspected before leaving the
factory. The chiller may be ordered and shipped in any
of the following forms:
• Form 1 (shipped complete)
• Form 2 (shipped without refrigerant charge)
Units are lled with YORK L oil and shipped without
exportcrating,unlesscratinghasbeenspeciedonthe
Sales Order.
If the unit is to be put into storage, prior to installation,
the following precautions should be observed:
• Ensure that the unit is not exposed to wind and
rain.
• Ensure that all openings, such as water
connections, are securely capped.
• The unit should be stored in a location where there
is minimal activity to limit the risk of accidental
physical damage.
• To prevent inadvertent operation of the pressure
relief devices the unit must NOT be steam cleaned.
• It is recommended that the unit be periodically
inspected during storage.
• Iftheunitisstoredforlongerthansixmonths,you
must comply with screw chiller requires long-term
storage requirements detailed in documents (Form
50.20-NM9 / Form 50.20-CL9 / Form 50.20-NM1).
Inspection
The unit shipment should be checked on arrival to see
that all major pieces, boxes and crates are received.
Each unit should be checked on the trailer or rail car
when received, before unloading, for any visible signs
of damage. Any damage of signs of possible damage
must be reported to the transportation company
immediately for their inspection.
When received at the job site,all containers should be
opened and the contents checked against the packing
list. Any material shortage should be reported to YORK
immediately.
Rigging
Prior to moving the unit, ensure that the installation site
is suitable for installing the unit and is easily capable
of supporting the weight of the unit and all associated
services.
The unit should be lifted in accordance with the written
rigging and lifting plan, using chains and shackles. The
shackles should be inserted into the respective holes in
the tube end sheets (lifting holes in the tube end sheet
are for a 6.8 shackle).
Use spreader bars to avoid lifting chains hitting the
chiller. Various methods of spreader bar arrangements
may be used, keeping in mind the intent is to keep the
unit stable and to keep the chains from hitting the chiller
and causing damage.
Do not move the unit on rollers, or lift it using
a forklift.

4-1
EN
Form 6S6I-B01C-EOMA-EN (0318)
Maintenance space requirements are as follows: Rear,
Ends and Above Unit - 610 mm
Front of Unit - 914 mm
Tube Removal - See following tables
Installation of Vibration Isolators
The optional vibration isolators are shipped loose with
the chiller.
Pleaserefertotheoorlayoutdrawing,forinstallation
positions for the units.
Isolator Installation
There are two types of isolator available: rubber pads
or spring isolators.
Locating and installing isolator pads
The isolator pads should be located in accordance with
the oor layout drawing.After the isolator pads have
been placed into position on the oor, lower the unit
onto the pads. Make sure the pads are even with the
edges of the mounting feet. When the unit is in place,
remove the rigging equipment and check that the chiller
is level, both longitudinally and transversely.
The longitudinal alignment of the unit should be
checked by placing a level on the top centre of the
evaporator shell under the compressor. Transverse
alignment should be checked by placing a level on top
of the shell end sheets at each end of the unit.
The unit should be level within 6.4 mm from one end to
the other end and from front to rear. If the chiller is not
levelwithintheamountspecied,liftitandplaceshims
between the isolation pad and the tube sheets.
CheckingtheIsolatorPadsDeection
All isolator pads should be checked for the proper
deectionwhilecheckingtheleveloftheunit.Eachpad
shouldbedeectedapproximately4mm(0.15").Ifan
isolatorpadisunderdeected,shimshouldbeplaced
between the unit tube sheet and the top of the pad to
equallydeectallpads.
YGWH Models Tube removal space
115, 145, 180, 225
2591 mm
YGWH Models Tube removal space
260, 300, 330, 375
4267 mm
Unit Weight (kg) Unit Weight (lbs) Part No.
UP TO 7423 UP TO 16365 028W14462-000
Unit Weight (kg) Unit Weight (lbs) Part No.
7424 TO 13079 16366 TO 28835 028W14459-000
YGWH115, YGWH145, YGWH180, YGWH225
YGWH260, YGWH300, YGWH330, YGWH375
4. Installation
The YGWH unit is shipped as a single factory assembled,
piped, wired and refrigerant charged package (or
nitrogenholdingcharge),requiringaminimumofeld
labour to make chilled water connections, condenser
water connections, refrigerant atmospheric relief
connections, and electrical power connections.
York representatives will provide unit installation
inspection, initial start-up and other services as detailed
in the supply contract.
The YORK Warranty will be voided if the following
restrictions are not adhered to:
• No valves or connections should be opened
under any circumstances because such action will
result in loss of the factory charged refrigerant or
nitrogen.
• Do not dismantle or open the Unit for any
reason except under the supervision of a YORK
representative.
• Donotmakenalpowersupplyconnectionstothe
compressor motor or control panel.
• Do not charge the compressor with oil.
• Do not attempt to start the system.
• Do not supply the evaporator with hot water
(temperaturelimitis38°C(100°F)orsteam
Location Requirements
YGWH units are low noise, and low vibration and can be
located in any building or structure that is level (within
6 mm) and can withstand the weight of the entire unit.
The unit should be located in an indoor location where
temperaturerangesfrom4°Cto43°Candthealtitude
is less than 2000 metres.
The units are furnished with neoprene vibration isolator
mounts for basement or ground level installations. Unit
may by located on upper oor levels providing the
oor is capable of supporting the total unit operating
weight (in this application, the spring isolator option is
recommended).
A level oor, mounting pad or  foundation must be
provided by others, capable of supporting the operating
weight of the unit.
Thereshouldbesu󰀩cientclearancesatthesidesand
top of the unit to carry out routine maintenance work.
In addition, tube removal space should be allowed at
one end of the unit for cleaning the evaporator and
condenser tubes, a doorway or other suitable hole
maybe used.

4-2 EN
Form 6S6I-B01C-EOMA-EN (0318)
Tube
Sheet
3/4”
[
19]
D
IA.
3”
[76]
End
Plate
B
6”
[152]
13/16”
[20]
A
C
5 1/2”
[140]
3/4”
[19]
”
]
D
4 1/2
[111
[114]
[76] [152]
Dim. mm (") 115, 145, 180, 225 260, 300, 330, 375
A152 (6") 152 (6")
B38 (1-1/2") 38 (1-1/2")
C140 (5-1/2“) 178 (7")
D114 (4-1/2“) 152 (6")
YGWH Models
Installing Option Spring Isolators
Inordertomountspringisolators,rstremovethenuts
and screws on the spring isolator supports. Before the
unit is positioned, the isolator supports should be bolted
to the unit support. Position the 4 spring isolators,
screw out the adjusting screws on each isolator until
they reach out to match the isolator support holes.
Then lower down the unit on the adjusting screws.
The levelling bolts should now be rotated one (1) turn at
a time, in sequence, until the unit end sheets are clear
oftheoororfoundationby22mm(7/8")andtheunit
is level. Check that the unit is level, both longitudinally
and transversely. If the levelling bolts are not long
enoughtolevelunitduetoanunevenorslopingooror
foundation, steel shims (ground, if necessary) must be
added beneath the isolator assemblies as necessary.
After the unit is levelled, wedge and shim under each
corner to solidly support the unit in this position while
piping connections are being made, pipe hangers
adjusted and connections checked for alignment. Then
theunitislledwithwaterandcheckedforleaks.The
levellingboltsshouldnowbenallyadjusteduntilthe
wedges and shims can be removed the unit should
now be in correct level position, clear of the oor or
foundation and without any e󰀨ect from the weight of
the piping.
Part No.: 029W27514-### Part No.: 029W27515-###
Unit Weight (kg) Unit Weight (lbs) Part No.
3115 TO 4453 6866 TO 9818 029W27514-002
Unit Weight (kg) Unit Weight (lbs) Part No.
4454 TO 5526 9819 TO 12182 029W27514-003
Unit Weight (kg) Unit Weight (lbs) Part No.
5527 TO 6927 12183 TO 15272 029W27514-004
YGWH145
YGWH115
YGWH180, YGWH225
Unit Weight (kg) Unit Weight (lbs) Part No.
6928 TO 8288 15273 TO 18272 029W27515-001
Unit Weight (kg) Unit Weight (lbs) Part No.
8289 TO 10391 18273 TO 22909 029W27515-002
YGWH260
YGWH300, YGWH330, YGWH375

4-3
EN
Form 6S6I-B01C-EOMA-EN (0318)
YGWH Floor Layout Diagram
Model A B C D E F
YGWH115 2731 1670 2937 1718 152 200
YGWH145 2731 1750 2937 1798 152 200
YGWH180 2731 1960 2937 2008 152 200
YGWH225 2731 1970 2937 2018 152 200
YGWH260 4407 1890 4613 1968 152 230
YGWH300 4407 1960 4613 2038 152 230
YGWH330 4407 2060 4613 2138 152 230
YGWH375 4407 2060 4613 2138 152 230

4-4 EN
Form 6S6I-B01C-EOMA-EN (0318)
Piping Connections
The following connection recommendations are
intended to ensure safe and satisfactory operation of
the unit. Failure to follow these recommendations could
cause harm to persons, or damage to the unit, and may
invalidate the warranty.
Themaximumowrateandpressuredropfor
the evaporator and condenser must not be
exceededatanytime.RefertoSection9for
details.
A ow switch must be directly in series with the
evaporator/ condenser and wired back to the control
panel using screened cable. For details, refer to
customer connection diagram. This is to prevent
damage to the evaporator/ condenser caused by
inadequateliquidow.Apaddletypeowswitchesare
suitable for 10 bar working pressure.
The chilled water pump should be installed in the
entering water pipe. Pipework and ttings must be
separately supported to prevent any loading on the
unit.Flexibleconnectionsarerecommendedwhichwill
also minimize transmission of vibrations to the building.
Flexibleconnectionsmustbeusediftheunitismounted
on anti-vibration mounts as some movement of the unit
canbeexpectedinnormaloperation.
Pipeworkandttingsimmediatelynexttotheevaporator
should be readily dismantled to enable cleaning prior to
operation, and to facilitate visual inspection of the heat
exchangernozzles.
A strainer must be mounted on the waterside of the
evaporator and condenser respectively, preferably of
40mesh,ttedascloseaspossibletotheliquidinlet
connection, and provided with a local water cut-o󰀨
switch.
The evaporator must not be exposed to too high
ushingvelocitiesordebrisdepositedduringushing.
It is recommended that a suitably sized by-pass
andvalvearrangementbeinstalledtoallowushing
of the pipework system. The by-pass can be used
during maintenance to isolate the evaporator without
disruptingowtootherunits.
Thermometer and pressure gauge connections should
be provided on the inlet and outlet connections of the
evaporator and condenser.
Drain and vent valves (by others) should be installed in
the connections provided in the cooler and condenser
liquid heads. These connections may be piped to drain
if desired.
Any debris left in the water piping between
the strainer and cooler could cause serious
damage to the tubes in the cooler and must
be avoided. The installer/user must also
ensure that the quality of the water in
circulation is adequate, without any dissolved
gases, which can cause oxidation of steel
parts within the cooler.
Evaporator
or
Condenser
Flow Switch
Stop Valve
Regulation
Valve
Flow Meter
Filter
Pressure Meter
Drain
Thermometer
3-way Valve for Flow Rate Control
Water Treatment
The unit performance provided in the design guide
is based on a fouling factor of (0.044 m²/KW for
condenser and 0.0018 m²/KW for evaporator). Dirt,
scale, grease and certain types of water treatment
willadverselya󰀨ecttheheatexchangersurfacesand
therefore the unit performance. Foreign matter in the
water system(s) can increase the heat exchanger
pressure drop, reducing the ow rate and causing
potentialdamagetotheheatexchangertubes.YORK
recommends that a water treatment specialist should
be consulted to determine whether the proposed
watercompositionwilladverselya󰀨ecttheevaporator
materials of carbon steel and copper. The pH value of
thewaterowingthroughtheevaporatormustbekept
in a range between 6.5 and 8.0. The water quality of
chiller should be in accordance with local code.