Remote Run / Stop ..........26 Accessories and Options ........14 Remote Print (PNT) ..........26 Alternative Refrigerants ........14 Remote Setpoint Offset – Temperature ....26 Electrical Options ........... 14 Remote Setpoint Offset – Current ......26 YORK INTERNATIONAL...
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3. STATUS KEYS ............40 9. PROGRAM KEYS ............ 69 General ............40 General ............69 General Status Messages ......40 User Programmable Values ......69 Unit Warnings ..........41 Input /Output Display Routine ...... 72 Anticipation Control Status Messages ..42 YORK INTERNATIONAL...
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Associated Drawings ..........102 Sensor Calibration Charts ........80 Typical Control Panel Wiring ........82 SECTION DECOMMISSIONING, DISMANTLING AND DISPOSAL SECTION TECHNICAL DATA General ..............103 Flow Rate and Pressure Drop Graphs ..... 84 Physical Data / Sound Data ........87 YORK INTERNATIONAL...
Center. See Commissioning, page 29. specified in this manual. • Only genuine YORK approved spare parts, oils and This manual contains all the information required for refrigerants must be used.
This manual and any other document supplied with the unit, are the property of YORK which reserves all rights. Electrical They may not be reproduced, in whole or in part, with- The unit must be grounded.
(System 2), can also be used to stop the respective sys- enclosed spaces and attention should be given to good tem in an emergency. When operated, it removes the ventilation. electrical supply from the control system, thus shutting down the unit. YORK INTERNATIONAL...
The INTRODUCTION 60 Hz motor operates at 3600 rpm to direct drive the male rotor which in turn drives the female rotor on a YORK YCRS chillers are designed for water or wa- light film of oil. ter-glycol cooling. 00635VIP Each compressor is direct drive, semi-hermetic, rotary All models are designed for indoor installation.
A 350 watt (115V 1 Ø 60 Hz) immersion heater is lo- ing load. cated in the compressor. The heater is temperature ac- tivated to prevent refrigerant condensation. YORK INTERNATIONAL...
The oil is automatically injected because of the pressure difference between the discharge pres- The condenser can be either a field supplied YORK sure and the reduced pressure at the suction end of the VCB/Remote Air-cooled condenser or an evaporative rotors.
Status Key Thermal Overload This key provides a display of the current operational Three PTC (positive temperature coefficient) ther- and/or fault status of the unit or the individual refriger- mistors in the motor windings of each phase provide YORK INTERNATIONAL...
A YORK ISN Building Automation System can Alternative Refrigerants provide a Pulse Width Modulated (PWM) signal Contact your nearest YORK office for information and direct to the standard control panel via the stan- availability on alternative HFC refrigerants. dard onboard RS485 port.
Flange adapter for grooved end pipe (standard 150 of 36°F (20°C) supply fluid temperature. PSI [10.5 bar] cooler). Includes companion flanges. (Field-mounted) FINAL PAINT – The unit can be painted with an op- tional coat of Caribbean Blue overspray paint. (Factory) YORK INTERNATIONAL...
5 6 7 8 11 12 13 14 15 BASE PRODUCT TYPE NOMINAL CAPACITY UNIT DESIGNATOR REFRIGERANT VOLTAGE/STARTER DESIGN / DEVELOPMENT LEVEL :Design Series F : YORK Standard Unit :R-22 :Wye-Delta :Engineering : Chiller Change : Remote or PIN Level : Condenser...
Sales Order. Major damage must be reported immediately to your If the unit is to be put into storage, before installation, local YORK representative. the following precautions should be observed: Ensure that all openings, such as water connections, MOVING THE UNIT are securely capped.
CONTROL PANEL REMOVAL For installation in locations where access width is lim- ited, the control panel may be removed as shown in the figure below. LD06595 FIG. 5 – CONTROL PANEL REMOVAL YORK INTERNATIONAL...
(1) , with a corkboard (4) installed YORK as an option for the unit. on both sides, and a waterproof sealing compound (5). The concrete base must capable of supporting 150% of •...
Aerated, brackish or salt water is not recommended for use in the water system(s). YORK recommends that a • Thermometer and pressure gauge connections water treatment specialist is consulted to determine that...
0.5 psi per foot of liquid lift (ASHRAE). Other losses include those caused by ac- YORK YCB/Remote Air-cooled Condenser or Evapo- cessories like solenoid valves, filter driers, hand valves, rative Condenser may be used – Refer to Installation &...
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The refrigerant cycle for determining capacity is based on saturated 0.82 1.22 gas leaving the evaporator and no subcooling in the condenser. Dis- charge superheat is 105°F. The saturated suction temperature is 40°F for liquid line sizing. LD07757 YORK INTERNATIONAL...
If the switch is set to the “ON” position before control supply with circuit protection (200, 3Ø, 60 Hz; commissioning then it must be reported to YORK, oth- 230VAC, 3Ø, 60 Hz; 380V, 3Ø, 60 Hz; 460V, 3Ø, 60 erwise the warranty may be invalidated.
(relays) switched by the volt-free contacts must Flow Switch (SF) have their coil suppressed using standard R/C suppressors. A chilled liquid flow switch of suitable type must be connected to terminals 24 and 13 to provide adequate protection against loss of liquid flow. YORK INTERNATIONAL...
Data/Fault History to be obtained (an optional printer to terminals 26 and 13 (PWM contact) will give re- must be connected to the RS 232 port on the micropro- mote offset of EMS% CURRENT LOAD LIMIT. cessor board). YORK INTERNATIONAL...
FORM 201.25-NM1 (302) CUSTOMER WIRING DATA LD07155 FIG. 12 – MULTI-POINT POWER SUPPLY CONNECTION - STANDARD UNIT LD07156 FIG. 13 – SINGLE-POINT POWER SUPPLY WITH INTERNAL CIRCUIT BREAKER OR NON-FUSED DISCONNECT SWITCH YORK INTERNATIONAL...
(wire, metal chips, etc.) and clean out set to the ‘ON’ position before commissioning then it if required. must be reported to YORK otherwise the warranty may be invalidated. Power connections: Check the customer power cables are connected correctly. Ensure that connections of Preparation –...
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Chilled Liquid System: Verify that the chilled liquid Temperature sensor(s): Ensure the chilled liquid tem- system has been installed correctly, and has been com- perature sensors are coated with heat conductive com- YORK INTERNATIONAL...
When the checks are complete stop the unit, switch step by step as follows: both system switches to the ‘ON’ position and restart the unit. Check that loading occurs as specified in the MBCS and that general operation is correct. YORK INTERNATIONAL...
The units are designed to work independently, or in on the lead compressor, the control system will adjust conjunction with other equipment via a YORK ISN the unit load depending on the chilled liquid tempera- building management system or other automated con- ture and rate of temperature change.
ARB boards, and the 40 character display to operate the energized, both sides of the relay coils or triacs will be integrated circuitry. The 24VAC is filtered, but not regu- at +12VDC potential. lated, to provide unregulated + 24VDC to supply the YORK INTERNATIONAL...
The logic section of the control panel compressor if motor cooling is inadequate. contains the relay output boards (ARB), which have 115VAC connected The onboard CTs provide 3-phase current protection to them. which look at phase current and send an analogue sig- YORK INTERNATIONAL...
The maximum allowable running current for each com- signal. After 30 minutes, if no refresh is provided, the pressor can be adjusted remotely to a lower value us- setpoint will change back to its original value. ing repeated timed closure of ‘voltage free’ contacts YORK INTERNATIONAL...
1 second. Kit is connected to the microproces- To calculate the necessary contact closure time to pro- sor. The Remote Control Center will vide a required Reset, use the following steps: always determine the setpoint. YORK INTERNATIONAL...
‘PROGRAM’ key to ‘MANUAL’. ‘MANUAL’ restart requires a reset us- YORK provides a voltage free contact terminals 5 and 6 ing the unit ON/OFF switch under the which close to start a pump. This contact can be used as keypad.
The compressor continues to operate to try to maintain chilled liquid temperature as close to until it either pumps down to the low suction pressure setpoint as possible. cutout setting or for 180 seconds, whichever comes first. YORK INTERNATIONAL...
This key is used for display and programming of the This switch shuts down the entire chiller when placed chiller operational settings and limits. in the ‘OFF’ position. The switch must be ‘ON’ for the chiller to operate. YORK INTERNATIONAL...
S W I T C H for systems 3 and 4 should only be in the ‘ON’ position T H E O F F P O S I T I O N for three and four system models respectively. YORK INTERNATIONAL...
P U M P I N G D O W N The chilled liquid temperature is below the point where Both refrigerant systems are in a pump-down cycle. the microprocessor will bring the lead system on and/ Pump down display messages occur on shutdowns YORK INTERNATIONAL...
This message should never appear, if it does consult the high pressure cutout. your local YORK office. This message is a warning that the setting for the type of refrigerant used with the The operation of this safety is important if condenser unit has been tampered with and the unit will not run.
This cutout protects the chiller from running in ambi- ents above 130°F (54°C) where potential malfunction If the flow switch opens, all systems will shutdown of system mechanical and electrical components may and a ‘NO RUN PERM’ (Permissive) message will result. be displayed. YORK INTERNATIONAL...
Lack of a differential indicates that the compressor is The cutout is programmable for a range of values be- not pumping or low condenser pressure and no oil is low the system upper limit. being pumped through the compressor to lubricate the bearings and rotors. YORK INTERNATIONAL...
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If the suc- The suction pressure cutout is ignored for the first 45 tion pressure rises above the programmed cutout value, seconds of operation. During the next 180 seconds of the 30 second timer will be reset. YORK INTERNATIONAL...
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This may result from loss of refrigerant, 6 = OUT OF RANGE DIP SWITCH SETTINGS contactor, or power problems as well as from a com- 7 = UNBALANCE > 50% pressor that is not pumping due to a mechanical mal- 8 = PHASE LOSS YORK INTERNATIONAL...
230 psi (16 bar) and the cutout contacts close. A fault lock-out will result if safety thresholds are ex- ceeded three times in a 90 minute period. YORK INTERNATIONAL...
• Discharge superheat 4.2 CHILLED LIQUID TEMPS KEY • Compressor slide valve position When the key is pressed the chiller leaving chilled liq- • Cooler inlet refrigerant temperature uid temperature (LCHLT) and returning chilled liquid temperature (RCHLT) are displayed. YORK INTERNATIONAL...
W A T E R Open: Water cooling mode is for water cooling applications and allows the chilled liquid leaving temperature set- S 1 - 4 Y C R S point to be programmed from 40 - 70°F (4.4 to 21.1°C). YORK INTERNATIONAL...
The FUNCTION Key can be used to scroll through the displays for: 4.9 FUNCTION KEY • Chilled Liquid Temps • System # Data Pressing this key displays the same message as press- ing the ‘STATUS’ key. • Motor Current • Options YORK INTERNATIONAL...
S Y S T E M N U M B E R 5.3 OPER DATA -– LOCAL DISPLAY MESSAGES When the ‘OPER DATA’ key is pressed, the following This message advises which system is programmed as the lead. message appears: YORK INTERNATIONAL...
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The following sequence of three displays are provided first for System 1 and then for Systems 2: S Y S R U N T I M E 1 1 - 1 5 - 1 0 D - H - M - S YORK INTERNATIONAL...
FORM 201.25-NM1 (302) 5.4 OPER DATA - REMOTE PRINTOUT The following shows a typical example YCRS printout obtained by pressing the ‘OPER DATA’ key with an optional printer attached. YORK INTERNATIONAL CORPORATION MILLENNIUM SCREW CHILLER SYSTEM 1 DATA UNIT STATUS COMPRESSORS STATUS...
P R E S S U R E After the ‘ENTER’ Key is pressed, a message indicat- U N L O A D 2 6 5 . 0 P S I G ing the time and date of the Fault Shutdown will appear: YORK INTERNATIONAL...
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L E A D S Y S T E M • Wye-Delta timer output. S Y S T E M N U M B E R YORK INTERNATIONAL...
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° F S P = 1 2 1 . 2 ° F S Y S # S A T D S C H = 1 2 9 ° F S U C T H E A T ° F YORK INTERNATIONAL...
An example of the first of the 6 HISTORY Printouts is ing the ‘HISTORY’ Key with an optional printer in- shown below: stalled. YORK INTERNATIONAL CORPORATION SYSTEM 1 DATA MILLENNIUM SCREW CHILLER WATER COOLED LIQUID CHILLER COMPRESSORS STATUS...
“PRINT” KEY Sec- tion on Page 52. YORK recommends the field tested WEIGH-TRONIX IMP-24, Model 2600 printer. This is a compact low cost printer that is ideal for service work and data logging.
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Obtaining a Printout Warranty A printout of current operating data may be obtained YORK assumes no warranty responsibility in the use by pressing the OPER DATA key. A snapshot will be of the printer. This includes damages to the printer and taken by the micro of current operating conditions.
If this is not done, the new values entered will the cursor is over ‘AM’ or ‘PM’ on the display. For be lost and the original values will be restored. example, pressing the ‘ ’ key when the cursor is on ‘PM’ changes it to ‘AM’. YORK INTERNATIONAL...
This is accomplished by analyzing the temperature er- point and the range. The range and is the maximum ror (ERROR) and the rate of change (RATE) to deter- acceptable + and - deviation from setpoint. mine the amount of loading necessary to cool the chilled YORK INTERNATIONAL...
• The lag compressor will then be loaded until it also reaches a slide valve step of ‘40’ while the lead Fixed timers are set to minimize undershoot and over- compressor is maintained at a constant load. shoot as a result of slide valve control. YORK INTERNATIONAL...
10 steps between sys- cooling. tems 1 and 2. It could only load system 1 ‘2’ steps while loading system 2 ‘8’ steps. Under these circumstances, the two systems will not appear to equalize loading. YORK INTERNATIONAL...
‘0’ for val- value in memory from a remote device. This feature is typically used for demand limiting or ice storage ues less than 10°F. Press the ‘ENTER’ key to store the new value in memory. applications. YORK INTERNATIONAL...
Press ‘ENTER’ to move to the hour part of the display. disappear and the ‘live’ clock will be Next, key in the time (hours/minutes) using a leading displayed. ‘0’ for times before 10 o’clock. e.g. 08:31. YORK INTERNATIONAL...
Monday will change times day, press the ‘*’ key. If a day marked as a holiday is programmed for the remainder of the not to be a holiday, press the ‘*’ key. week to the Monday schedule. YORK INTERNATIONAL...
Chiller ‘ON/OFF’ switch is ‘ON’, remote cycling to be repeated to bring the chiller back devices are closed, and system switches permit. on line. YORK INTERNATIONAL...
200 to 400 PSIG (13.8 to 27.52 bar). If an unacceptable value is entered at any stage, the following message is displayed for a few seconds and the entered value is ignored: YORK INTERNATIONAL...
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C U T O U T 1 3 0 ° F The high ambient temperature cutout is used to select PROGRAMMED X RUN TIME / 3 +10 CUTOUT the ambient temperature above which the chiller may YORK INTERNATIONAL...
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A N T I R E C Y C L E T I M E R ‘WATER’ cooling mode, the cutout is automatically 6 0 0 S E C S set at 36°F (2.2°C) and cannot be reprogrammed. YORK INTERNATIONAL...
• Input plug to -AMB or AIOB (example: J13-7) ‘ ’ or ‘ ’ keys are used to change from ‘AUTO- • Voltage read on input MATIC’ to ‘MANUAL’ lead/lag. • Converted value (example: 54.3 PSIG [3.75 BARG]) YORK INTERNATIONAL...
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113°F STANDARD (45°C) LOW AMBIENT TEMP CUTOUT 25°F STANDARD (-3.9°C) LEAVING LIQUID TEMP CUTOUT 36°F WATER 9°F to 36°F( -12.9° TO 2.2°C) (2.2°C) GLYCOL HIGH MOTOR CURRENT UNLOAD 30 TO 105% FLA ANTI-RECYCLE TIME 300 - 600 SECONDS YORK INTERNATIONAL...
“REM SETP = XXX°F”. * Max Reset Value is the “Max EMS-PWM Remote Temp. Reset” setpoint value described in the programming section under Cooling Setpoints. Programmable values are from 2°F to 40°F (1.11°C to 22.22°C). YORK INTERNATIONAL...
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If a 4-20mA signal is available, it is applied to termi- be suppressed to prevent possible component nals A+ and A- and jumpers are applied to JU5 and damage. Use YORK PN031-00808-000 JU3 on the reset board. The mA signal is conditioned to suppressor.
If damage or a system failure occurs due to tations given in the MBCS manual. improper maintenance during the warranty period, YORK shall not be liable for costs incurred to return Compressor Oil Level: Check the compressor oil level the unit to satisfactory condition.
Check the compressor unloads correctly. Measured temperature is incorrect. Check sensor calibration, location and wiring. Chiller FAULT: VAC Poor mains supply voltage. Check mains supply is stable and within allowable UNDERVOLTAGE limits. displayed Check for voltage dip on compressor start. YORK INTERNATIONAL...
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Check operation of motor cooling, TEVs and liquid solenoid valve. SYS # CURR LIMITING High compressor motor current Check liquid temperature is within operating limits. displayed has activated unloading. Check if ambient air temperature is above unloading). (Compressor current operating limits. YORK INTERNATIONAL...
Maximum Refrigerant Side Pressure (barg) 22.7 22.7 22.7 22.7 22.7 22.7 22.7 Dia. X Length, mm 495 x 2743 495 x 2743 495 x 2743 540 x 3963 540 x 3963 540 x 3963 540 x 3963 Water Nozzle Connection Size, (inches) YORK INTERNATIONAL...
Terminal Block (std), Non-Fused Disconnects (opt) or individual system Circuit Breakers (opt) in each of the two motor control centers.) TABLE 16 – MULTI-POINT POWER SUPPLY SYSTEM #1 VOLT MAX DUAL MIN NF CHILLER CODE CIR. FUSE DUAL DISC SW MODEL MAX CB FUSE YCRS0100SC YCRS0120SC YCRS0140SC YCRS0180SC YCRS0200SC YCRS0220SC YCRS0240SC YORK INTERNATIONAL...
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FORM 201.25-NM1 (302) SYSTEM #2 VOLT MAX DUAL MIN NF CHILLER CODE FUSE CIR. DUAL DISC SW MODEL MAX CB FUSE YCRS0100SC YCRS0120SC YCRS0140SC YCRS0180SC YCRS0200SC YCRS0220SC YCRS0240SC YORK INTERNATIONAL...
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8. The supplied disconnect is a “Disconnecting Means” as defined in the N.E.C. 100.I, and is intended for isolating the unit for the available power supply to perform maintenance and troubleshooting. This disconnect is not intended to be a Load Break Device. 9. Field Wiring by others which complies to the National Electrical Code & Local Codes. YORK INTERNATIONAL...
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8. The supplied disconnect is a “Disconnecting Means” as defined in the N.E.C. 100.I, and is intended for isolating the unit for the available power supply to perform maintenance and troubleshooting. This disconnect is not intended to be a Load Break Device. 9. Field Wiring by others which complies to the National Electrical Code & Local Codes. YORK INTERNATIONAL...
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TABLE 18 – SINGLE-POINT POWER SUPPLY SYSTEM #1 SYSTEM #2 MAX DUAL CHILLER VOLT MIN N/F CIR. DUAL FUSE MODELS DISC SW CODE FUSE MAX CB YCRS0100SC YCRS0120SC YCRS0140SC YCRS0180SC YCRS0200SC 1000 1000 YCRS0220SC 1000 1000 1000 1000 YCRS0240SC YORK INTERNATIONAL...
DISCH. CONN. VALVE 300 PSI SYS. 2 EACH 1-5/8" O.D. SYSTEM SYSTEM SYSTEM DISCH. CONN. COOLER COOLER LIQUID OUTLET LIQUID INLET VICTAULIC VICTAULIC CONNECTION CONNECTION SYS. 2 1-1/8" O.D. LIQ. CONN. SYS. 1 1-1/8" O.D. LIQ. CONN. LD07761 ORIGIN YORK INTERNATIONAL...
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25-15/16" 25-15/16" 48" 48" 48" 48" 48" 48" 48" NOTES: 200/230V 1. CLEARANCES - Recommended YORK clearances to service the unit are as follows: 30-1/4" Rear to Wall: 1' 8" 8" Front to Wall: 2' 8" 2" 10" Top: 1' 8"...
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DISCH. CONN. VALVE 300 PSI SYS. 2 EACH 1-5/8" O.D. SYSTEM SYSTEM SYSTEM DISCH. CONN. COOLER COOLER LIQUID OUTLET LIQUID INLET VICTAULIC VICTAULIC CONNECTION CONNECTION SYS. 2 1-1/8" O.D. LIQ. CONN. SYS. 1 1-1/8" O.D. LIQ. CONN. LD07761 ORIGIN YORK INTERNATIONAL...
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1791 1791 1219 1219 1219 1219 1219 1219 1219 NOTES: 1. CLEARANCES - Recommended YORK clearances to service the 200/230V unit are as follows: Rear to Wall: 508mm Front to Wall: 813mm Top: 508mm Tube removal 100, 120, 140: 2743mm (either end)
TABLE 30 – NEOPRENE -VMC TYPE RD-4 SELECTIONS MODEL MODEL YCRS0100SC YCRS0100SC YCRS0120SC YCRS0120SC YCRS0140SC YCRS0140SC YCRS0180SC GREEN GREEN GREEN GREEN YCRS0180SC YCRS0200SC GREEN GREEN GREEN GREEN YCRS0200SC YCRS0220SC GREEN GREEN GREEN GREEN YCRS0220SC YCRS0240SC GREEN GREEN GREEN GREEN YCRS0240SC YORK INTERNATIONAL...
TABLE 36 – SOUND PRESSURE LEVELS (SPL), dB re 20 microPa IN ACCORDANCE WITH ARI STANDARD 575-94 OCTAVE BAND HZ WEIGHTED MODEL 1000 2000 4000 8000 YCRS0100SC 71.5 YCRS0120SC YCRS0140SC 72.5 YCRS0180SC 78.5 YCRS0200SC 73.5 79.5 YCRS0220SC 80.5 66.5 YCRS0240SC 81.5 Note: All ‘A’ weighted sound pressure data ± 3 dBA YORK INTERNATIONAL...
If no isolation valves are installed it may be Only use lifting equipment of ad- necessary to drain the complete system. equate capacity. After removal from position the unit parts may be dis- posed of according to local laws and regulations. YORK INTERNATIONAL...