Инструкции на Чиллеры (тепловые насосы) York серии YLPA...SE, YLPA...HE бренда York

Operating Instructions Revision 0 Form 150.68-O1.EN.CE (0311) (035-23225-100) REVERSE CYCLE AIR TO WATER HEAT PUMPS MICRO BASED CONTROL SYSTEM WITH IPU STYLE A (Software version C.MMC.16.04 and higher) R410A

Table of Contents

General 1 Control Panel 1 AMB (IPU II and I/O Boards) 1 Internal Clock & Memory Backup Battery 1 Keypad and Display 2 Unit ON/OFF Switch 2 Customer Controls 2 System Inputs 2 Remote Start/Stop 2 Flow Switch 2 Remote Mode Selection 2 Load Limiting 2 Fan Full Speed Inhibit (units fitted with optional…

General

YLPA units are designed to work independently, or in conjunction with other equipment via an ISN , Bacnet or Modbus or N2 (remote communications device) building management system or other automated control system. When operating, the unit controls monitor the liquid system temperatures at the unit…

Keypad and Display

Remote Mode Selection User interface is via a touch keypad and a liquid crystal display allowing access to operating and programmed data. Information can be displayed in S.I. (Metric) or Imperial units. The 40 character liquid crystal display (2 lines of 20 characters) is used for displaying system…

Voltage Free Contacts

A 28 Vdc or up to 254 Vac external circuit (supplied by others) may be connected to these contacts. The contacts are rated at 125 VA. If any inductive load device (relay or contactor) is connected to the alarm contacts, the device must be suppressed at the load with a RC suppressor across the…

Mode Control

The control mode of the unit is selected by:    A selection under the 'OPTION' key when the local/remote option is set to 'LOCAL'. to terminals 13 & 50 on -XTBC1 in the electronic section. For the contact to be enabled the selection for local/remote mode under the 'OPTION' key must be set to…

After 60 seconds of run-time if the leaving chilled liquid

temperature is still above the Setpoint High Limit and the leaving chilled liquid temperature is not falling faster than the programmed RATE SENSITIVITY within the programmed RATE CONTROL TEMPERATURE RANGE or above the RATE CONTROL TEMPERATURE RANGE at 1.7°C per minute, the next compressor in…

Leaving Liquid Control (Heating Mode)

The leaving hot liquid ‘SETPOINT’ is the temperature the unit will control to within +/- the ‘RANGE’. The Setpoint High Limit is the ‘SETPOINT’ plus the ‘RANGE’. The Setpoint Low Limit is the ‘SETPOINT’ minus the ‘RANGE’. The ‘RANGE’ setting takes into account the number of compressors on the unit…

To ensure reliable operation of the unit the software will

modify the operation of the ‘Leaving hot Liquid Control’ as follows:  If the run time of the lead system is less than 5 minutes the Setpoint Low Limit is decreased down to a minimum of 40°C by the 'Setpoint Adjust Value' shown in the following graph. Last run time of lead system (minutes) Setpoint…

Single speed fans

The following tables show the relationship between fan stages and the microprocessor digital outputs and fans: Systems with 3 fans Stages Fan Output 1 =AMB-XTB7-8 (SYS1) =AMB-XTB10-8 (SYS2) 1-MF1 2-MF1 Off On On On Fan Output 2 =AMB-XTB7-9 (SYS1) =AMB-XTB10-9 (SYS2) 1-MF2 2-MF2 Off Off On On Fan…

Two Speed Fan Option

Cooling Mode The reason for two speed fans it to reduce unit noise by running the fans in slow speed over as wide a range of conditions as possible, only going to full speed as a last resort. This is achieved by raising the pressure at which the last fan stage occurs, switching from all fans running…

The following tables show the relationship between fan stages and the microprocessor digital outputs and fans: Systems with 3 fans Stages Fan Output 1 =AMB-XTB7-8 (SYS1) =AMB-XTB10-8 (SYS2) 1-MF1 2-MF1 Fan Output 2 =AMB-XTB7-9 (SYS1) =AMB-XTB10-9 (SYS2) 1-MF2 2-MF2 Fan Output 3 =AMB-XTB7-10 (SYS1)…

YLPA Fan Configuration

Adaptive Defrost in Heat Pump Mode The purpose of any defrost system is to remove frost and ice from the ambient coils. The adaptive defrost system achieves this by optimising the frequency of defrosts dependent on defrost duration with the aim of improving overall unit efficiency. The field…

At defrost start the low pressure cut-out is set to 50% of actual cut-out value (calculated from discharge pressure) and ramped up to actual cut-out value over 60 seconds. If the defrost is terminated before ramp up is completed the suction pressure cut-out valve reverts to actual cut-out value.…

The system can then reduce the initiation delay in steps of 20% to 60% of set initiation delay. This gives and effective step of initiation delay of 60%, 80%, 100%, 120%, 140% and 160% of set initiation delay (refer to Programmed Initiation Time figure). PERCENT OF PROGRAMMED INITIATION TIME 0% 60 %…

Defrost Termination

Defrost Sensor Mounting and Position When the frost is removed, the coil temperature rises suddenly and soon reaches the termination temperature of 8°C. The software ensures all fan are off, even if the discharge pressure is high. In 5 second the mode valve will be set to heating (energized) and the…

Anti-Recycle Timer

Lead/Lag Control Each system has its own anti-recycle timers. The anti-recycle time under the PROGRAM key can be programmed between 240 - 600 seconds and sets the minimum start-to-start time of the lead compressor in a system. A second non-programmable anti-recycle timer, stop to start is fixed at…

Control Panel Keys

STATUS Display/Print SYS SYS Status Key 1 COMP S RUN 2 2 COMP S RUN 1 Entry Setpoints Unit OPER DATA SETPOINTS OPTIONS PRINT SCHEDULE/ ADVANCE DAY CLOCK HISTORY ENTER /ADV PROGRAM Status Key This key provides a display of the current operational and/or fault status of the unit or individual…

SYS X SYS SWITCH OFF

The system switch under ‘OPTIONS’ is turned off. The system will not be allowed to run until the switch is turned back on. SYS X NO COOL LOAD This message applies to the cooling mode only. The chilled liquid temperature is below the point (determined by the ‘SETPOINT’ and ‘RANGE’) that the…

Models with 3 compressors in a system (Heat Pump

Mode Only) SYS X MAX LOAD LIMIT In the heating mode this message indicates that the leaving hot liquid temperature is low and the number of compressors allowed to run is restricted to prevent low suction pressure trips. If the Leaving Temperature is below 25°C the maximum number of compressors…

4.5 bar. The minimum actual suction pressure cut-out

is 2 bar. The actual suction cut-out pressure can be found under the ‘OPER DATA’ key. SYS 1 ACTUAL SUCTION CUTOUT = XXXX PSIG At system start, the cut-out is set to 50% of the actual suction pressure cut-out value. During the next 3 minutes the cut-out point is ramped up to the actual cut-out point.…

The under voltage safety assures that the system is

not operated at voltages where malfunction of the microprocessor could result in system damage. When the 110 Vac to the microprocessor drops below the limit, a unit fault is initiated to safely shut down the unit. Restart is allowed when the 110 Vac is within limits and the anti-recycle timers have…

OPER DATA Key

The ‘OPER DATA’ key gives access to unit and system operating parameters. When the ‘OPER DATA’ key is pressed, system parameters will be displayed and remain on the display until another key is pressed. After pressing the ‘OPER DATA’ key, the operating data messages can be scrolled through by using…

On dual pump Hydro Kits the following messages are

displayed: EVAPORATOR WATER PUMP 1 STATUS YYYY EVAPORATOR WATER PUMP 2 STATUS YYYY EVAP PUMP TOTAL RUN HOURS = XXXXX This message indicates the total hours that the pump contact is closed (terminals 23 & 24 on –XTBC2). PUMP TOTAL RUN HOURS = XXXXX If the optional Hydro Kit is fitted the above…

PRINT Key

History Messages The ‘PRINT’ key allows the operator to obtain a printout of real-time system operating data or a printout of system data at the ‘’instant of the fault’’ on the last six faults which occurred on the unit. An optional printer is required for the printout. When the ‘HISTORY’ key is…

LOW AMBIENT TEMP

CUTOUT = XXX.X °C Or with York hydrokit option EVAPORATOR WATER PUMP STATUS YYYY LEAVING LIQUID TEMP CUTOUT = XXX.X °C Or with York dual pump hydrokit option FAN CONTROL ON PRESSURE = XXXX PSIG FAN DIFFERENTIAL OFF PRESSURE = XXXX PSIG DEFROST INITIATION TEMP = XX.X °C EVAPORATOR WATER PUMP 1 STATUS…

SYS X ACTUAL SUCTION

CUTOUT = XXXX PSIG Entry Keys SYS X AIR COIL DEFR TEMP = XXX.X °C SYS 1 MODE SV IS XXX SYS 1 FAN STAGE XXX The System 1 messages are displayed first and followed by the System 2 messages. Explanations of the history data messages are given under the ‘STATUS’, ‘DISPLAY/PRINT’, ‘SETPOINTS’ or ‘UNIT’…

Setpoints Keys

The ‘RANGE’ should be set in accordance with the following table: Compressors Delta T °C Range 3 0.8 4 5.5 1.1 8 1.4 Compressors Delta T °C Range 3 0.8 5&6 5.5 0.8 8 1.1 The ‘RANGE’ is programmed for +/- X.X° C. The ‘SETPOINT’ is in the centre of the control range. Programming and viewing the…

Remote Cooling Setpoint

Pressing the ‘SETPOINTS’ key a third time will display the remote cooling ‘SETPOINT’ and ‘RANGE’. The range value is the value entered under the ‘COOLING SETPOINT / RANGE’ display: REM C SP = XX.X °C RANGE = +/- X.X °C This message automatically updates every 2 seconds. This setpoint is not…

With optional two speed fans

Pressing the ENTER/ADV key will advance the schedule to the following display: FAN ON 00:00AM INHIBIT OFF 00:00AM A time range can be set during which the fans will be preventing from operating on the last stage, full speed, to reduce unit noise say at night. Fan inhibit is considered not programmed…

FAN CONTROL ON

PRESSURE = XXXX PSIG DEFROST TERMINATION TIME = XX MIN In the cooling mode the fan control ON pressure is the programmed setting that is used to stage the ambient coil fans on, in relation to discharge pressure. In the heating mode the defrost termination time should be regarded as the maximum…

Setpoint and Cut-out Settings

Refer to Operating Limitations in ICOM when setting or adjusting Setpoint and Cut-out Settings. Parameter High Limit 21.1°C 21.1°C Default 6.7°C 6.7°C 21.1°C 6.7°C Water/Glycol 0.8°C 2.5°C All 35°C 55°C Heating Liquid 'RANGE' All 0.8°C 2.5°C Maximum EMS-PWM Remote Temperature Reset Water/Glycol…

Unit Keys

For correct operation only change Mode Selection Local\Remote when unit switch is set to OFF. When programmed for LOCAL the next option message allows the control mode to be selected cooling or heating. If connected the remote mode selection contact is ignored. If connected to a remote communication…

LEAD / LAG CONTROL

MANUAL SYS 1 LEAD REFRIGERANT TYPE R-410A LEAD / LAG CONTROL MANUAL SYS 2 LEAD This option is factory set and should always read R410A. If the refrigerant type is incorrect contact your local YORK office. LEAD / LAG CONTROL AUTOMATIC FLASH CARD UPDATE DISABLED System1 or system 2 can be selected as…

the pump with the shortest run hours. Pump duty is

changed when the pumps are off or if the duty pump run hours are greater than the ‘DUTY/STANDBY PUMP CHANGEOVER DAYS’ (programmed under the program key). If the running pump fails to make flow, or flow is lost, or the pumps manual motor starter trips on overload, the duty pump will be stopped and…

Inputs / Outputs

Digital Inputs INPUT 1 XTBC1 13 - -AMB J13-1 J13-2 2 20 J13-3 J13-4 J13-5 5 50 J13-6 - J13-7 J13-8 J13-9 J13-10 J13-11 15 DESCRIPTION +30VDC UNIT SWITCH PULSE WIDTH MODULATED TEMPERATURE RESET or REMOTE UNLOAD STEP 2 REMOTE UNLOAD STEP 1 REMOTE START STOP MODE SELECTION (OPEN COOLING CLOSED HEATING)…

Digital Outputs

OUTPUT 17 -AMB XTB7-1 XTB7-2 XTB7-3 XTB7-4 XTB7-5 XTB7-6 XTB7-7 XTB7-8 XTB7-9 XTB7-10 XTB10-1 XTB10-2 XTB10-3 XTB10-4 XTB10-5 XTB10-6 XTB10-7 XTB10-8 XTB10-9 XTB10-10 XTB8-1 XTB8-2 IDENT 110V VIA =1-KCR =AMB-K1 =AMB-K2 =AMB-K3 =AMB-K4 110V =AMB-K5 =AMB-K6 =AMB-K7 =AMB-K8 110V VIA =2-KCR =AMB-K17…

  Maximum cable length between the printer and the Microprocessor Board is 7.5 m. Twisted pair shielded cable is required (1 m with optional printer). Serial printer should be set for data bits = 8 parity = none and baud rate = 1200. The printer may be left connected to the microprocessor panel.…

0-10VDC Remote Signal

4-20mA Remote Signal Jumper JP on the I/O board must be set to 10V. Jumper JP on the I/O board must be set to 20mA. To calculate the reset chilled liquid setpoint for values between 0VDC and 10VDC use the following formula: To calculate the chilled liquid setpoint for values between 4mA and 20 mA…

Example

4-20mA Remote Signal Local Hot Liquid Setpoint = 50 °C Jumper JP on the I/O board must be set to 20mA. *Max Reset Value = 10 °C To calculate the chilled liquid setpoint for values between 4mA and 20mA use the following formula: Input Signal = 6VDC °Reset = (6VDC x 10. 0 °C)/10 = 6.0 °C New Setpoint…

EMS-PWM Cooling Temperature Reset

Pressing the ‘SETPOINTS’ a fifth time will allow the maximum remote EMS-PWM cooling temperature reset to be programmed: MAX EMS-PWM REM C TEMP RESET = +XX °C The temperature reset value is the maximum allowable reset of the cooling temperature ‘SETPOINT’ . The ‘SETPOINT’ can be reset upwards by the…

ISN Control

(York Talk -AMB terminal block TB1) If communications cannot be established check that the panel has been set up for York Talk. Press the Program key, followed by four presses on the down arrow key, followed by the Enter key. The DE MODIFIER ADDRESS must be set to minus one. Use the Enter and down…

P56/58

P57/59 OPERATIONAL CODE NO ABNORMAL CONDITION UNIT SWITCH OFF SYSTEM SWITCH OFF LOCK-OUT UNIT FAULT SYSTEM FAULT REMOTE SHUTDOWN DAILY SCHEDULE SHUTDOWN NO RUN PERMISSIVE NO LOAD ANTI-COINCIDENCE TIMER ACTIVE ANTI-RECYCLE TIMER ACTIVE MANUAL OVERRIDE SUCTION LIMITING DISCHARGE LIMITING LOAD LIMITING…

IPU II Port Settings

With unit switch set to OFF press PROGRAM, DOWN ARROW, DOWN ARROW, DOWN ARROW, DOWN ARROW, ENTER keys in turn and then set the following: DE MODIFIER ADDRESS DE MODIFIER OFFSET P1 PROTOCOL P1 MANUAL MAC ADDRESS P1 BAUD RATE P1 PARITY P1 STOP BITS P2 PROTOCOL P2 MANUAL MAC ADDRESS P2 BAUD RATE P2…

The table below details the real time error numbers and a description of each error

ERROR NUMBER (##) DESCRIPTION ALL OK DATUM TYPE OK TEST FAILED ENGLISH TEXT TOO LONG FLOATING POINT EXCEPTION GET PACKET FAILED GET TYPE FAILED INVALID UNIT CONVERSION INVALID HARDWARE SELECTION REAL TIME FAULT SPANISH TEXT TOO LONG THREAD EXITED THREAD FAILED THREAD STALLED IO BOARD RESET BRAM…

Serial Communication Analog Input Data

This data can be read using a BACnet or Modbus network connection and can NOT be modified using this connection. The Modbus Register Address for these points is 513 + AI # AI BACNET NAME LCHLT RCHLT DAT S1_SUCT_TEMP OAT S1_SUCT_SH S1_RUN_TIME S1_SUCT_PR S1_DSCH_PR S1_CIR_TEMP S1_DEF_TEMP S1_EEV_OUT…

Serial Communication Binary Value Data

This data can be read using a BACnet or Modbus network connection and can NOT be modified using this connection. The Modbus Register Address for these points is 1281 + BI #. BI BACnet NAME S1_ALARM S2_ALARM EVAP_HTR EVAP_PUMP S1_C1_RUN S2_C1_RUN S1_LLSV S1_MODE_SV S1_HGBV S1_BHS S1_C2_RUN S2_C2_RUN…

ADF

NAME ANALOG VALUE DESCRIPTION 11 S1_SUCT_TEMP NOT USED 12 OAT AMBIENT AIR TEMPERATURE 13 S1_SUCT_SH NOT USED 14 S1_RUN_TIME SYS 1 RUN TIME (SECONDS) 15 S1_SUCT_PR SYS 1 SUCTION PRESSURE 16 S1_DSCH_PR SYS 1 DISCHARGE PRESSURE 17 S1_CIR_TEMP NOT USED 18 S1_DEF_TEMP SYS 1 DEFROST TEMPERATURE 19…

Serial Communication Binary Value Data

This data can be read and DB 1 modified using a N2 network connection. BD EN NAME START_STOP SS_SYS1 SS_SYS2 S1_ALARM S2_ALARM EVAP_HTR EVAP_PUMP S1_C1_RUN S2_C1_RUN S1_LLSV S1_MODE_SV S1_HGBV S1_BHS S1_C2_RUN S2_C2_RUN S2_LLSV Sys 2 S2_MODE_SV LEAD_SYS S1_C3_RUN S2_C3_RUN CH_LIQ_TYPE AMB_MODE…

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