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• a liquid line refrigerant restriction, filter drier, service valve,

etc.

• refrigerant charge
Low Suction Superheat
Alarm 77 — Circuit A (P.11)

Alarm 78 — Circuit B (P.12)

Criteria for Trip

— The criteria are tested when the circuit is

ON. This alarm is generated if the following criterion is met:

The EXV position is equal to or less than 5% and the cir-

cuit’s Suction Superheat (Suction Gas Temperature – Saturated

Suction Temperature) is less than the Suction Superheat Set

Point (

EXVA Superheat Setpoint

, SHP.A

EXVB Superheat

Setpoint

, SHP.B

, or

EXVC Superheat Setpoint

, SHP.C

) by at

least 5° F (2.8° C) or the circuit Saturated Suction Temperature

is greater than Maximum Operating Pressure (MOP) set point

(

EXV MOP Setpoint

, MOP

) for more than 5 minutes.

Action to be Taken

— The circuit is shut down normally.

Reset Method

— Automatic, first occurrence in 24 hours.

Manual, if more than one occurrence in 24 hours.

Possible Causes

— If this condition is encountered, check the

following items:

• suction pressure transducer wiring to Main Base Board

• board for a faulty channel

• faulty suction transducer

• suction gas thermistor wiring to EXV Board 1 or to EXV

Board 2

• suction gas thermistor sensor for accuracy

• EXV Board 1 or EXV Board 2 faulty channel

• EXV operation

• confirm maximum operating pressure set point

• refrigerant charge level
Alarm 80 — Interlock Failure (P.14)

Criteria for Trip

— The criteria are tested whether the unit is

ON or OFF. This alarm is generated if the lockout switch

(located in the Energy Management Module) is closed during

normal operation.

Action to be Taken

— All compressors are shut down immedi-

ately without going through pumpdown. and is not allowed to

start.

Reset Method

— Automatic, first occurrence in 24 hours.

Manual, if more than one occurrence in 24 hours.

Possible Causes

— If this condition is encountered, check the

following items:

• chilled water flow switch operation

• water flow. Be sure all water isolation valves are open and

check water strainer for a restriction

• interlock wiring circuit

• power supply to the pump

• control signal to the pump controller

• chilled water pump operation

• cooler pump contactor for proper operation
Alarm 81 — Electrical Box Thermostat Failure/Reverse

Rotation (P.28)

Criteria for Trip

— The alarm criteria are checked whether the

unit is ON or OFF. If channel 15A on the MBB, which is used

for field wired external pump interlock, is open then the alarm

will be generated.

Action to be Taken

— Unit shut down or note allowed to start.

Reset Method

— Automatic, if the channel is closed, the unit

will start normally.

Possible Causes

— If this condition is encountered, check the

following items:

• jumper wiring on TB5-1 and TB5-2 when channel is not in

use

• external pump interlock open

• field wiring for the external pump interlock open

Alarm 82 — Loss of Communication with System Manager

(P.29)

Criteria for Trip

— The criterion is tested whether the unit is

ON or OFF. This alarm is generated if the System Manager

had established communications with the machine and is then

lost for more than 2 minutes.

Action to be Taken

— The action to be taken by the control

depends on the configuration. If Auto Start when SM lost is

enabled, (

Cooler Heater Delta Spt

, AU.SM

YES

), then the

unit will force the CCN Chiller Start Stop to

ENBL

and clear

all forced points from the System Manager. The unit will revert

to stand-alone operation.

Reset Method

— Automatic, once communication is

re-established.

Possible Causes

— If this condition is encountered, check the

following items:

• communication wiring

• power supply to the System Manager and unit controls
Alarm 83 — Master/Slave Communication Failure (P.30)

Criteria for Trip

— The criterion is tested whether the units are

ON or OFF and a master and slave machine has been config-

ured, (

Master/Slave Select

, MSSL

and

Master/Slave

Select

, MSSL

). If communication is lost for more than 3

minutes, this alarm is generated.

Action to be Taken

— Dual chiller control will be disabled and

each unit will operate in Stand-Alone mode.

Reset Method

— Automatic, once communication is

re-established.

Possible Causes

— If this condition is encountered, check the

following items:

• CCN wiring

• control power to each Main Base Board, master and slave

• confirm correct configuration
Low Oil Pressure
Alarm 84 — Circuit A (P.67)

Alarm 85 — Circuit B (P.68)

Criteria for Trip

— The criteria are tested only when the com-

pressor is ON. The alarm is generated if one of the following

occurs, where:

oil

= oil pressure transducer reading for the appropriate com-

pressor

= suction pressure reading for the affected circuit

= discharge pressure reading for the affected circuit

oil_sp1 = 0.7 x (dp-sp) + sp
oil_sp2 = sp + 7.2 psi (15 seconds after start)
oil_sp2 = sp + 14.5 psi (45 seconds after start)

• If the compressor starts with the ambient temperature

(OAT less than 36° F [2° C] the oil pressure monitoring

is delayed by 30 seconds.

Action to be Taken

— The affected compressor will be

stopped. The other compressors will continue to operate.

Reset Method

— Manual.

Possible Causes

— If this condition is encountered, check the

following items:

• sensor wiring to the CPM Board

• board for a faulty channel

• faulty transducer

• plugged oil filter

• faulty oil solenoid valve coil

• stuck oil solenoid valve

• stuck check valve

• manual shut off valve to ensure it is not fully open

• confirm unit configuration

Содержание Aquaforce 30XW150

Страница 1: ...ng and Loading 29 CIRCUIT COMPRESSOR STAGING CIRCUIT COMPRESSOR LOADING Minimum Load Control 29 Dual Chiller Control 29 DUAL CHILLER CONTROL FOR PARALLEL APPLICATIONS DUAL CHILLER PUMP CONTROL FOR PARALLEL CHILLER APPLICATIONS DUAL CHILLER CONTROL FOR SERIES APPLICATIONS DUAL CHILLER PUMP CONTROL FOR SERIES CHILLER APPLICATIONS Page Ramp Loading 35 Temperature Reset 35 RETURN WATER RESET SPACE TEM...

Страница 2: ...he latest edition of ANSI ASHRAE American National Standards Institute American Society of Heating Refrigerating and Air Conditioning Engineers 15 Safety Code for Mechanical Refrigeration The accumulation of refrigerant in an enclosed space can displace oxygen and cause asphyxiation Provide adequate ventilation in enclosed or low overhead areas Inhalation of high concen trations of vapor is harmfu...

Страница 3: ...display touch screen for display and user configuration a Start Stop button and an Alarm Indicator LED light emitting diode See Fig 1 The Touch Pilot display can be used to access various Carrier Comfort Network devices For operation under these circumstances contact your Carrier representative Operation of the Touch Pilot display is driven from the displays on the touch screen The Touch Pilot dis...

Страница 4: ... the CTRL_PNT button in the bottom left corner was selected See Fig 2 and 3 To exit the box press Main Menu Display The default screen for the Touch Pilot controller is the Group Display screen To access the Main Menu press the button The screen shown in Fig 4 will be displayed Selecting a button will display the screens associat ed with that category The user can also access the login screen from...

Страница 5: ...CTORY FACTORY2 SERVICE1 CP_UNABL UPDTHOUR UPDHRFAN MAINTCFG Maint LOADFACT FANCTRL M_MSTSLV DEFROSTM LAST_POR PR_LIMIT BOARD_PN SERMAINT EXV_CTRL CUR_PHAS OCCDEFCFM Config Ctrl ID DISPCONF USER MST_SLV CFG_TAB1 CFG_TAB8 BRODEFS OCCDEFCS HOLIDAY ALARMDEF Alarms ALARHIST ALARHIS2 ALAM_CUR Reset Time Attach Setup Regional Language Contrast Backlight Calibrate Password Display CCN Login Fig 5 Touch Pi...

Страница 6: ...ust consist of 4 digits which can be entered using the numeric keypad Access levels and associated privileges are as follows Limited Logged in Access Provides the user with read write access to all available tables except service configura tion tables where the user will not be permitted to modify point data and Group Display tables where the user will not be permitted to add points This access le...

Страница 7: ...Point Data dialog box press the ADD button The display will show the last Group Display accessed Use the navigation but tons to access the destination Group Display Press an existing point button or a blank button to update the highlighted button with the source point s name Press to add the highlighted point to the group and return to the table display To Remove A Point From A Group Display From ...

Страница 8: ...ge No power off or control reset is required when reconfiguring languages Adjusting the Contrast The contrast of the display can be adjusted to suit ambient conditions To adjust the contrast enter the LED Test mode of the device Pressing will access the TEST point Pressing again will cause the OFF to flash Use the up or down arrow to change OFF to ON Pressing will illuminate all LEDs and display a...

Страница 9: ... Table 3 MODE RUN STATUS SERVICE TEST TEMPERATURES PRESSURES SET POINTS INPUTS OUTPUTS CONFIGURATION TIME CLOCK OPERATING MODES ALARMS Auto Display VIEW Manual Test Mode TEST Unit Temperatures UNIT Circuit A Pressures PRC A Cooling Setpoints COOL General Inputs GEN I Circuit A Outputs CIR A Display Configuration DISP Time of Day TIME Operating Control Type SLCT Reset Current Alarms R ALM Machine S...

Страница 10: ...charge Pressure Transducer DPTA Pressure Transducer Discharge Pressure DP A MBB J7A CH6 5V 5 vdc Ref S Signal R Return Circuit B Discharge Pressure Transducer DPTB Pressure Transducer Discharge Pressure DP B MBB J7C CH8 5V 5 vdc Ref S Signal R Return Dual Chiller LWT Thermistor DUAL 5k Thermistor CHWS Temperature CHWS MBB J6 CH3 Dual Set Point Input Dual Set Point Switch Remote Setpoint Switch DUA...

Страница 11: ...OFF 5 ON 6 Invalid will cause MTA configuration alarm ON 4 OFF 5 ON 6 Invalid will cause MTA configuration alarm OFF 4 ON 5 ON 6 Invalid will cause MTA configuration alarm ON 4 ON 5 ON 6 Invalid will cause MTA configuration alarm 7 Contactor Failure Action OFF All units should be off ON Used when Shunt Trip is available in the unit 8 Not Used CPM A DIP Switch 3 1 2 3 4 Address OFF OFF OFF OFF CPM ...

Страница 12: ...NTC Thermistor Discharge Gas Temp DGT X CPM X J9 CH02 1 2 Oil Pressure Transducer OPT X Pressure Transducer Oil Pressure OP X CPM X J10B CH04 5V 5 vdc ref S Signal R Return Economizer Pressure Transducer sizes 175 200 350 400 only EPT X Pressure Transducer Economizer Pressure ECP X CPM X J10A 5V 5 vdc ref S Signal R Return Compressor Current X Phase A Current Sensor CUR A CPM X J8 CH01 1 2 Compres...

Страница 13: ... LEN Local Equipment Network See below for DIP switch infor mation See Tables 6 and 7 for EXV inputs and outputs EXV BOARD 1 150 400 DIP SWITCH 1 2 3 4 5 6 7 8 Address ON ON ON ON ON ON OFF ON EXV BOARD 2 350 400 DIP SWITCH 1 2 3 4 5 6 7 8 Address OFF ON ON ON ON ON OFF ON 1 2 3 4 5 6 7 8 ON 100 100 257 01 712 100K 100K 100 1 2 3 4 5 3 2 1 G J3 1 2 3 4 5 J2A EXVA J2B EXVB 24VAC STATUS MOV1 LOCATIO...

Страница 14: ...T B EXVA J3 TH B Circuit A EXV EXV A Stepper Motor EXV Position EXV A EXVA J2A 1 2 3 4 Circuit B EXV size 325 only EXV B Stepper Motor EXV Position EXV B EXVA J2B 1 2 3 4 DESCRIPTION INPUT OUTPUT I O TYPE DISPLAY MODULE POINT NAME CONNECTION POINT Pin Notation Power 24 vac supply EXVX J1 11 24 vac 12 Ground Local Equipment Network EXVX J4 1 RS485 Port D 2 RS485 Port Gnd 3 RS485 Port D Circuit X Su...

Страница 15: ...Power 24 vac supply AUX J1 11 24 vac 12 Ground Local Equipment Network AUX J9 RS485 Port D G RS485 Port Gnd RS485 Port D RS485 Port D G RS485 Port Gnd RS485 Port D Condenser Head Pressure Control Speed Signal HD_A 0 10 VDC Head Press Actuator Pos SPD A AUX CH9 Signal Ground Minimum Load Valve A MLV A Solenoid Minimum Load Valve Circuit A MLV A AUX J2 CH3 Minimum Load Valve B MLV B Solenoid Minimum...

Страница 16: ...dules is interrupted when this switch is off and all outputs from these modules will be turned off Energy Management Module EMM The EMM is available as a factory installed option or as a field installed accessory See Fig 12 The EMM receives 4 to 20 mA inputs for the temperature reset cooling set point and demand limit functions The EMM also receives the switch inputs for the field installed second...

Страница 17: ...s communication between modules These 3 wires run in parallel from module to module The J9A connector on the MBB provides communication directly to the Navigator display module YELLOW LED The MBB has one yellow LED The Carrier Comfort Network CCN LED will blink during times of network communication Table 10 Touch Pilot Display Port Connections INPUT OUTPUT DESCRIPTION I O TYPE DISPLAY MODULE POINT...

Страница 18: ...ppropri ate colors for different colored cables 3 Connect the red wire to terminal on TB3 of the plug the white wire to COM terminal and the black wire to the terminal 4 The RJ14 CCN connector on TB3 can also be used but is only intended for temporary connection for example a laptop computer running Service Tool Remote Alarm and Alert Relays The 30XW chiller can be equipped with a remote alert and...

Страница 19: ...ation 4 Blank 24 character text field Default Optional Software part number 4 CESR 131363 01 Fixed Model number 4 Blank Fixed Serial number 4 Blank Fixed Reference number 4 Version 1 0 Fixed Broadcast address processing list primary 5 241 251 254 255 enabled 241 255 enabled disabled Defaults Optional Broadcast address processing list secondary 5 none Not applicable DESCRIPTION LIMITS UNITS NAME DE...

Страница 20: ...the CCN network then this decision should be set to No NOTE The display must be in Network mode and connected to the primary CCN bus and this decision set to Yes for alarm acknowledgement to be enabled Allowable Entries No Yes Default Value No BROADCAST ACKNOWLEDGER This configuration is used to indicate whether the Touch Pilot display will act as the broadcast acknowledger for its CCN bus There c...

Страница 21: ...NNING DELAY or READY The Chiller Occupied variable will indicate the occupied state of the machine according to Time Schedule 1 and will be either YES occupied or NO unoccupied The Control Type vari able will indicate the type of control For this configuration Control Type will be Local The Operating Type variable will change to L Sched Local Schedule The schedules consist of 8 user configurable o...

Страница 22: ...ng on the schedule The unit Occupied status OCC will indicate the current occupied schedule according to the schedule either NO or YES The Status Unit Control Type CTRL will be LOCAL OFF when the switch is Off The Status Unit Control Type will be CCN when the Enable Off Remote Contact switch input is On Refer to Appendix F for more detailed instructions regard ing global schedules and the i Vu dev...

Страница 23: ...time periods The control supports time schedules for local control remote control and ice building These time periods can be flagged to be in effect or not in effect on each day of the week The day begins at 00 00 and ends at 24 00 The machine is in unoccupied mode unless a scheduled time period is in effect If an occupied period is to extend past midnight the occupied period must end at 24 00 hou...

Страница 24: ...ions from occupied to unoccupied or vice versa By configuring their appropriate Time Schedule decisions to the same number other devices on the network can follow this same schedule The Enable Off Remote Contact must be in the Enable position or the Remote Contact position with the contacts closed for the unit to operate The Unit Run Status STAT will indicate the current status of the machine OFF ...

Страница 25: ...h Pilot Display Table 20B Cooling Set Point Selection with Navigator Display In all cases there are limits on what values are allowed for each set point These values depend on the Cooler Fluid Type and the Brine Freeze Set point discussed later See Table 21 Table 21 Configuration Set Point Limits The minimum set point for Medium Temperature Brine applications is related to the Brine Freeze Point T...

Страница 26: ...control the set point See Fig 18 Fahrenheit Set Point 10 70 mA 4 16 deg F Celsius Set Point 12 2 38 9 mA 4 16 deg C To configure this option while using a Touch Pilot display To change this value a Control Point Force must be applied When configured correctly Setpoint Control will indicate 4 20 mA SET POINT CONFIGURATION Setpoint Select ICE MODE ENABLE ice_cnfg DUAL SET POINT INPUT SETP_SW ICE DON...

Страница 27: ...r Fluid Type FLUD to brine for brine or glycol chilled water loops This option will allow for a set point temperature range of 14 to 60 F 10 0 to 15 5 C Before configuring this selection confirm that a suitable anti freeze has been added and is at a sufficient concentration to protect the loop Additionally the Brine Freeze Set Point Brine Freeze Setpoint LOSP must be set for proper freeze protecti...

Страница 28: ... and in an ON mode alarm P 91 will be generated Other conditions which will trigger this alarm include Cooler pump interlock is open for at least 15 seconds during chiller operation Lag chiller in Master Slave Control pump interlock does not close after 1 minute of the pump start command Cooler pump control is enabled and the chilled water flow switch interlock is closed for more than 2 minutes fo...

Страница 29: ... gradually unload the circuit which was fully loaded to match capacity requirements To configure this option with the Touch Pilot display To configure this option with the Navigator display Minimum Load Control Minimum Load Control can be a factory installed option or a field installed accessory If installed and its operation is desired the Minimum Load Control must be enabled Once enabled the val...

Страница 30: ...er temperature and the set point is greater than the con figured value then the lag chiller will start A minimum on time for the lag chiller can be programmed with the Lag Minimum Running Time configuration Lag Minimum Running Time LAG M This parameter causes the control to run the lag chiller for the programmed minimum on time The Lag Unit Pump Select Lag Unit Pump Control LAGP can be configured ...

Страница 31: ...fig MST_SLV 12 0 Master Always Leads 1 Lag Once Failed Only 2 Lead Lag Runtime Select Default 0 Master Always Leads Lead Lag Balance Delta Main Menu Config MST_SLV 16 Range 40 to 400 hours Default 168 hours Lag Start Timer Main Menu Config MST_SLV 17 Range 2 to 30 minutes Default 10 minutes Lead Pulldown Time Main Menu Config MST_SLV 18 Range 0 to 60 minutes Default 0 minutes Start If Error Higher...

Страница 32: ...t No OPER Operating Control Type Operating Modes SLCT Set to desired control DISPLAY NAME PATH LINE NO VALUE Master Slave Select Main Menu Config MST_SLV 3 2 Slave Default 0 Disable Master Control Type Main Menu Config MST_SLV 7 1 Local Control 2 Remote Control 3 CCN Control Default 1 Configure for proper control type Slave Address Main Menu Config MST_SLV 11 Must be set to the Slave Chiller s add...

Страница 33: ...Y Lag Start Delay Configuration RSET Range 2 to 30 minutes Default 10 minutes LL ER Start If Error Higher Configuration RSET Range 3 0 to 18 F 1 7 to 10 0 C Default 4 0 F 2 2 C LAG M Lag Unit Pump Select Configuration RSET Range Off If U Stp On If U Stop Default Off If U Stp LPUL Lead Pulldown Time Configuration RSET Range 0 to 60 minutes Default 0 minutes SERI Chillers in Series Configuration RSE...

Страница 34: ...perating Control Type Operating Modes SLCT Set to desired value DISPLAY NAME PATH LINE NO VALUE Master Slave Select Main Menu Config MST_SLV 3 2 Slave Default 0 Disable Master Control Type Main Menu Config MST_SLV 7 1 Local Control 2 Remote Control 3 CCN Control Default 1 Local Control Value Configure for proper control type Slave Address Main Menu Config MST_SLV 11 Must be set to the Slave Chille...

Страница 35: ...ase The chiller can also be set for return water temperature control See Fig 20 Other indirect means of estimating building load and con trolling temperature reset are also available and are discussed below To verify that reset is functioning correctly subtract the Set point Select Current Setpoint SETP from the Control Point Control Point CTPT to determine the degrees reset RETURN WATER RESET The...

Страница 36: ...Navigator display In the example in Fig 23 at 4 mA no reset takes place and at 20 mA 5 F 2 8 C chilled water set point reset is required DISPLAY NAME PATH LINE NO VALUE Cooling Reset Select Main Menu Config USER 19 Default 0 No Reset 2 Delta T Delta T No Reset Temp Main Menu Setpoint SETPOINT 7 Default 0 F 0 C Delta T Full Reset Temp Main Menu Setpoint SETPOINT 8 Default 0 F 0 C Cooling Reset Deg ...

Страница 37: ...perature deg F EWT LWT Design Rise typical Fig 20 Return Water Temperature Control Load Profile a30 4478 Load Fluid Temperature deg F EWT LWT 40 42 44 46 48 50 52 54 56 100 90 80 70 60 50 40 30 20 10 0 Design Rise typical Fig 19 Leaving Chilled Water Temperature Control a30 4066 ...

Страница 38: ...GRC Delta T No Reset Temp CRT1 Delta T Full Reset Temp CRT2 2 4 6 8 10 Fig 21 Return Water Reset a30 4479 0 1 2 3 4 5 6 7 60 65 70 75 80 Space Temperature deg F Degrees Reset deg F Cooling Reset Deg Value DGRC Space T Full Reset Value CRS2 Space T No Reset Value CRS1 Fig 22 Space Temperature Reset a30 4481 ...

Страница 39: ... limit percent capacity or compressor current that is set to the lowest demand takes priority if both de mand limit inputs are closed If the demand limit percentage does not match unit operation the unit will limit capacity or current to the closest step without exceeding the value To use demand limit select the type of demand limiting to use by configuring the Demand Limit Select variable De mand...

Страница 40: ...Demand Limit Selection Demand Limit Type Select DMDC the current at which 100 capacity limit takes place mA For 100 Demand Limit DMMX the current at which 0 capacity limit takes place mA For 0 Demand Limit DMZE the Current Limit Selection Current Limit Select CUR S and the Compressor Current limit at 100 signal Current Limit at 100 CUR F To configure this option with the Touch Pilot display TOUCH ...

Страница 41: ...onfiguration The 30XW chiller is ca pable of broadcasting time date and holiday status to all ele ments in the CCN system In the stand alone mode broadcast must be activated to utilize holiday schedules and adjust for daylight saving time If the chiller is to be connected to a CCN system determine which system element is to be the network broadcaster to all other system elements Broadcast is activ...

Страница 42: ... alarms to ComfortVIEW software TeLink BAClink and DataLINK To configure this option with the Touch Pilot display ALARM EQUIPMENT PRIORITY The ComfortVIEW device uses the equipment priority value when sorting alarms by level The purpose of the equipment priority value is to de termine the order in which to sort alarms that have the same level A priority of 0 is the highest and would appear first w...

Страница 43: ...ill modify the normal operation routine If any of the override conditions listed below are satisfied the override will deter mine the capacity change instead of the normal control Over rides are listed by priority order and are often linked to unit op erating modes See Table 33 for a list of overrides See the Op erating Modes section on page 54 for more information regarding operating modes Overri...

Страница 44: ...the Control Point Control Point CTPT exceeds a calculated value and the rate of change of the water temperature is greater than 0 1º F min a stage will be added Override 12 High Temperature Cooling and Low Temper ature Heating This override runs only when Minimum Load Control is Enabled Hot Gas Bypass Select HGBP and is set to 1 2 or 3 This override will add a stage of capacity if the next stage i...

Страница 45: ...t be true a The saturated suction temperature or saturated discharge temperature is less than leaving fluid temperature by more than 5 4º F 3 0º C b Saturated suction temperature or saturated dis charge temperature is less than 41 F 5 C c Outdoor air temperature is less than 32 F 0º C d Saturated suction temperature or saturated discharge temperature is less than the outdoor air temperature by mor...

Страница 46: ...if the circuit is on and if the saturated condens ing temperature reaches the condensing set point 10 F the valve is opened to its maximum position to avoid a high pres sure alarm The water valve is fully closed when the circuit is OFF on unit sizes 150 200 and if both circuits are off on unit sizes 325 400 If the unit is configured as a heat machine the valve will be maintained fully open when th...

Страница 47: ...ntering water temperatures between 33 F 0 6 C and 65 F 18 3 F field installed accessory head pressure control valve is required Contact your Carrier representative for details Table 35 Temperature Limits for Standard Units LEGEND Temperature limit for high condensing heat reclaim option units are 140 F 60 C For sustained operation EWT should not exceed 85 F 29 4 C Unit requires brine modification ...

Страница 48: ... Rate GPM L s GPM L s GPM L s GPM L s GPM L s GPM L s 150 Two pass 200 12 6 720 45 4 240 15 1 960 60 6 384 24 2 480 30 3 One pass 384 24 2 1520 95 9 480 30 3 1600 100 9 384 24 2 480 30 3 Three pass 120 7 6 480 30 3 384 24 2 175 Two pass 213 13 4 765 48 3 255 16 1 1020 64 4 408 25 7 510 32 2 One pass 408 25 7 1615 101 9 510 32 2 1700 107 3 408 25 7 510 32 2 Three pass 128 8 0 510 32 2 408 25 7 200 ...

Страница 49: ...be properly applied over the entire range of evaporator water flow rates represented A30 4691 Fig 29 30XW150 200 Evaporator NIH Flange and NIH Victaulic 0 500 1000 1500 2000 gpm 0 31 5 63 1 94 6 126 2 L s 2 pass 1 pass 3 pass 0 00 5 00 10 00 15 00 20 00 25 00 30 00 35 00 40 00 0 14 9 29 8 44 8 59 7 74 6 89 5 104 4 119 4 ft wg kPa Pressure Drop Evaporator Flow Rate A30 4834 LEGEND NOTE The table ab...

Страница 50: ...ow rates represented NIH Nozzle In Head A30 4692 Fig 30 30XW325 400 Evaporator NIH Flange 3 0 500 1000 1500 2000 2500 3000 0 31 5 63 1 94 6 126 2 157 7 189 3 Evaporator Flow Rate 2 1 pass pass pass 0 00 5 00 10 00 15 00 20 00 25 00 30 00 35 00 40 00 ft wg 0 14 9 29 8 44 8 59 7 74 6 89 5 104 4 119 4 kPa Pressure Drop gpm L s LEGEND NOTE The table above represents pressure drops only The table does ...

Страница 51: ...ate 2 pass 1 pass 0 14 9 29 8 44 8 59 7 74 6 89 5 104 4 119 4 ft wg kPa Pressure Drop Fig 33 30XW325 400 Condenser Marine Waterbox NOTE The table above represents pressure drops only The table does not imply that the chiller can be properly applied over the entire range of condenser water flow rates represented A30 4694 0 00 5 00 10 00 15 00 20 00 25 00 30 00 35 00 40 00 ft wg gpm L s 0 14 9 29 8 ...

Страница 52: ...00 40 00 Condenser Flow Rate 0 14 9 29 8 44 8 59 7 74 6 89 5 104 4 119 4 ft wg kPa Pressure Drop LEGEND NOTE The table above represents pressure drops only The table does not imply that the chiller can be properly applied over the entire range of evaporator water flow rates represented NIH Nozzle In Head A30 4695 Fig 35 30XW325 400 Condenser NIH Flange 0 00 5 00 10 00 15 00 20 00 25 00 30 00 35 00...

Страница 53: ...ndenser Flow Rate 0 14 9 29 8 44 8 59 7 74 6 89 5 104 4 119 4 ft wg kPa Pressure Drop Fig 37 30XW325 400 Condenser NIH Victaulic LEGEND NOTE The table above represents pressure drops only The table does not imply that the chiller can be properly applied over the entire range of evaporator water flow rates represented NIH Nozzle In Head A30 4696 2 pass 0 00 5 00 10 00 15 00 20 00 25 00 30 00 35 00 ...

Страница 54: ...acity of the lead chiller For series chiller operation the pump is always controlled by the master chiller Operating Modes Operating modes are override modes that affect normal operation of the equipment More than one operating mode can be in effect at the same time Some operating modes have corresponding capacity control overrides in the Capacity Control Overrides section on page 43 For the Touch...

Страница 55: ...s not run that day a pump will be started and will run for 2 seconds at 2 00 PM If the machine is equipped with dual pumps Pump no 1 will run on even days such as day 2 4 6 of the month Pump no 2 will run on odd days such as day 1 3 5 of the month The mode will terminate when the pump shuts down SYSTEM MANAGER ACTIVE This mode is checked when the unit is ON or OFF This mode is active if a System M...

Страница 56: ... well in the leaving water nozzle of the condenser See Fig 39 and 40 Condenser Entering Water Sensor On all sizes with heat machine options this thermistor is factory installed in a well in the entering water nozzle of the condenser Compressor Suction Gas Temperature On all sizes this thermistor is factory installed in a well located on the compres sor of each circuit There is one thermistor for e...

Страница 57: ... angle shown DGT Discharge Gas Thermistor DPT Discharge Pressure Transducer ECT Economizer Gas Thermistor EPT Economizer Pressure Transducer HPS High Pressure Switch OPT Oil Pressure Transducer SGT Suction Gas Thermistor SPT Suction Pressure Transducer Fig 38 Thermistor and Transducer Locations A30 4839 SGTA DPTA DPTB SGTB SPTA SPTB OPTA OPTB ...

Страница 58: ...027 36 14 614 37 14 214 TEMP F RESISTANCE Ohms 38 13 826 39 13 449 40 13 084 41 12 730 42 12 387 43 12 053 44 11 730 45 11 416 46 11 112 47 10 816 48 10 529 49 10 250 50 9 979 51 9 717 52 9 461 53 9 213 54 8 973 55 8 739 56 8 511 57 8 291 58 8 076 59 7 686 60 7 665 61 7 468 62 7 277 63 7 091 64 6 911 65 6 735 66 6 564 67 6 399 68 6 238 69 6 081 70 5 929 71 5 781 72 5 637 73 5 497 74 5 361 75 5 229...

Страница 59: ...ntrol the position of the EXV The difference between the temperature of the discharge gas and the saturated discharge temperature is the superheat The EXV module controls the position of the elec tronic expansion valve stepper motor to maintain the discharge superheat set point TEMP C RESISTANCE Ohms 3 14 026 4 13 342 5 12 696 6 12 085 7 11 506 8 10 959 9 10 441 10 9 949 11 9 485 12 9 044 13 8 627...

Страница 60: ...EXV is controlled by the circuit EXV board There is an economizer gas temperature thermistor and economizer pressure transducer located in the line which runs from the economizer assembly to the compressor The economizer pressure is converted to satu rated temperature and is used to calculate economizer superheat Economizer superheat equals economizer temperature minus saturated economizer tempera...

Страница 61: ...ed Put the Enable Off Remote Contact EOR switch in the Off position Enter the Service Test mode and change Service Test Enable T REQ from OFF to ON A password may be required Switch the EOR switch to the Enable position Under the COMP sub mode enable one of the compressors CP xn for the cir cuit Let compressor run until gage on suction pressure port reads 10 psig 68 9 kPa Turn the compressor off T...

Страница 62: ...zer EXV Circuit A Main Menu Status QCK_TST1 Q_ECO_A Service Test Mode QUIC ECO A Economizer EXV Circuit B Main Menu Status QCK_TST1 Q_ECO_B Service Test Mode QUIC ECO B COLOR INDICATOR R 134a 75 F 24 C ppm R 134a 125 F 52 C ppm Green Dry 30 45 Yellow green Caution 30 100 45 170 Yellow Wet 100 170 CLOSED OPEN CLOSED OPEN GASKET OPEN VALVE IN QUICK TEST SUB MODE BEFORE DISASSEMBLING EF05BD271 NV 32 ...

Страница 63: ...oid check valve oil level switch oil pressure transducer and an oil shut off valve A typical oil system is shown in Fig 46 See Table 42 Table 42 Unit Oil Quantities 30XW UNIT SIZE OIL CHANGE gal liters Circuit A Circuit B 150 200 6 0 22 7 325 400 5 0 18 9 5 0 18 9 Fig 45 Typical 06T Compressor SOLENOID 1 SOLENOID 2 HIGH PRESSURE SWITCH MOTOR TEMPERATURE SENSOR 2 COMMON MOTOR TEMPERATURE SENSOR 1 t...

Страница 64: ...the problem is resolved up to a maximum of 1 5 gal 5 7 l If it is necessary to add factory oil charge levels to the system contact your local Carrier representative Oil Filter Maintenance Each circuit has one oil filter locat ed externally to the compressor Oil line pressure drop is monitored by the control Oil line pressure drop is calculated by subtracting oil pressure OP from discharge pressure...

Страница 65: ...mmended when rolling replacement tubes into the tubesheet Place one drop of Loctite No 675 or equivalent on top of tube prior to rolling This material is intended to wick into the area of the tube that is not rolled into the tube sheet and prevent fluid from accumulating between the tube and the tube sheet New tubes must also be rolled into the center tubesheet to prevent circuit to circuit leaks ...

Страница 66: ...icate minimum flow require ments have been met for the machine 1 Check to confirm that all strainers are clean valves are open and pumps are running For the case of variable frequency drive VFD controlled pumps ensure the minimum speed setting has not been changed 2 Measure the pressure drop across the cooler evaporator Use the cooler pressure drop curves in Fig 27 37 to cal culate the flow and co...

Страница 67: ...nt for Fluid Type brine When the fluid temperature rises 6 F 3 3 C above the leaving fluid set point the safety resets and the chiller restarts Reset is automatic as long as this is the first occurrence of the day Relief Devices Fusible plugs are located in each cir cuit between the condenser and the liquid line shutoff valve PRESSURE RELIEF VALVES Valves are installed in each circuit and are loca...

Страница 68: ... for leak and add refrigerant Compressor or control contacts welded Replace contactor or relay Air in chilled water loop Purge water loop Non condensables in refrigerant circuit Remove refrigerant and recharge Inoperative EXV Check EXV clean or replace Check EXV cable replace if necessary Check EXV board for output signal Load too high Unit may be undersized for application Circuit Does Not Run Ac...

Страница 69: ...b cooling Liquid Thermistor 21 19 Space Temperature Thermistor Alarm tripped Automatic Faulty Sensor wiring error failed EMM board 23 20 Cooler heater feedback thermistor None Automatic Configuration error 24 21 Circuit A Economizer Gas Thermistor Circuit economizer function disabled Automatic Faulty Sensor wiring error failed EXV board 25 22 Circuit B Economizer Gas Thermistor Pr 01 26 Circuit A ...

Страница 70: ...module P 01 67 Cooler Freeze Protection Entering or leaving therm istor sensed a tempera ture at or below freeze point Unit shut down or not allowed to start Automatic first occurrence in 24 hours manual if multiple alarms within 24 hours Faulty thermistor faulty wiring low water flow low loop volume fouled cooler or freeze conditions 02 68 Condenser Freeze Protection Circuit A None Automatic Conf...

Страница 71: ...gh Oil Filter Drop Pressure Difference between dis charge pressure and oil pressure is greater than 30 psi for more than 5 minutes Alert generated Manual Plugged oil filter 85 91 Circuit B High Oil Filter Drop Pressure 75 93 Circuit A Low Oil Level Oil level switch open Circuit shut down or not allowed to start Automatic first occurrence in 24 hours manual if multiple alarms within 24 hours Low oi...

Страница 72: ...n Field programmed elapsed time has expired for maintenance time None Manual Maintenance required A1 B1 01 132 01 133 01 Compressor Motor tempera ture too high Compressor temperature higher than 232 F for more than 90 seconds Circuit shut down Manual Economizer EXV fail ure 350 400 only faulty CPM board low refrigerant charge 02 132 02 133 02 Compressor Motor tempera ture out of range Compressor t...

Страница 73: ... 133 11 Compressor Contactor failure CPM board detects greater than 15 of MTA current for 10 seconds after shutting off the com pressor contactor Oil solenoid is energized Circuit shut down Manual Faulty contactor con tactor welded wiring error 12 132 12 133 12 Compressor Unable to stop motor CPM board detects greater than 15 of MTA current for 10 seconds after three attempts Circuit shut down Man...

Страница 74: ...ms 17 and 18 are not used or supported If this condition is encountered confirm machine configuration Alarm 19 Space Temperature Sensor Failure th 21 Criteria for Trip This alarm criterion is checked whether the unit is ON or OFF and if Space Temperature Reset has been enabled This alarm is generated if the outdoor air temperature as measured by the thermistor is outside of the range 40 to 245 F 4...

Страница 75: ...alve coil stuck oil solenoid valve confirm unit configuration Economizer Pressure Transducer Failure sizes 175 200 350 400 only Alarm 37 Circuit A Pr 13 Alarm 38 Circuit B Pr 14 Criteria for Trip The criteria are tested whether the circuit is ON or OFF The alarm is generated if the voltage as sensed by the MBB or Fan Board C is 0 vdc which corresponds to the Navigator display of 7 psi 48 3 kPa Act...

Страница 76: ...oop volume low loop volume at nominal flow rates can in extreme cases bypass cold water to the cooler freezing conditions freeze protection items for proper operation glycol concentration and adjust LOSP accordingly If the Leaving Water Set Point is above 40 F 4 4 C and there is glycol in the loop consider using the Medium Temperature Brine option Cooler Fluid Type FLUD 2 to utilize the brine free...

Страница 77: ... Possible Causes If this condition is encountered check the following items jumper wiring on TB5 1 and TB5 2 when channel is not in use external pump interlock open field wiring for the external pump interlock open Alarm 82 Loss of Communication with System Manager P 29 Criteria for Trip The criterion is tested whether the unit is ON or OFF This alarm is generated if the System Manager had establi...

Страница 78: ...n the oil level is elevated first three times the alarm is tripped in a 24 hour period Man ual if alarm is tripped more than three times in a 24 hour period Possible Causes If this condition is encountered check the following items oil level in the oil separator oil level switch wiring to the CPM board CPM board for a faulty channel faulty oil level switch oil solenoid valve stuck open Alarm 96 Ma...

Страница 79: ...106 Circuit B P 38 Criteria for Trip The criterion is tested when the circuit is ON This alarm will be tripped if the circuit capacity is reduced more than 8 times in 30 minutes due to high discharge gas tem peratures If no override occurs in a 30 minute period the counter is reset Action to be Taken The affected circuit will be shut down Reset Method Automatic after 30 minutes If the alarm is cle...

Страница 80: ...he following items suction service valve is closed sensor wiring to the EXV boards boards for faulty channels faulty transducer economizer EXV operation Slide Valve Control Unverifiable Alarm 120 Circuit A P 87 Alarm 121 Circuit B P 88 Criteria for Trip The criteria are tested when the compres sor is operating and the active cooling set point is greater than 32 F 0 C This alarm will be tripped if ...

Страница 81: ...arm will be generated if the CPM board detects a motor current greater than 93 MTA must trip amps and less than 2 times that for more than 1 7 seconds Action to be Taken The compressor will be stopped Reset Method Manual Possible Causes If this condition is encountered check the following items Compressor operating beyond the operation envelope Incorrect MTA setting Compressor Locked Rotor Alarm 1...

Страница 82: ...nt toroid Action to be Taken The compressor will be stopped Reset Method Manual Possible Causes If this condition is encountered check the following items if power supply lead at the terminal block is not operating at the correct phase if power supply is crossed when going through the current toroid Compressor MTA Configuration Fault Alarm 132 14 Circuit A A1 14 Alarm 133 14 Circuit B B1 14 Criter...

Страница 83: ...and ON will flash Use either arrow key to change the value to OFF and press The item should be inactive To enter the Quick Test mode the Enable Off Remote Contact switch must be in the OFF position Move the LED to the Service Test mode Press to access TEST Use the key until the display reads QUIC Press to access Q REQ Press and the display will show OFF Press and OFF will flash Enter the password ...

Страница 84: ...FF OFF OFF will flash ON ON OLS A will turn on ON 1 will flash OFF OFF OLS A will turn off ALM Isolation FIOP Factory Installed Option ALT Alert HGBP Hot Gas Bypass CB Circuit Breaker LWT Leaving Water Temperature CDFS Condenser Flow Switch MBB Main Base Board CPM Compressor Protection Module MLV Minimum Load Valve CPMP Condenser Pump Relay PL Plug CWFS Chilled Water Flow Switch PMP Pump DPT Disch...

Страница 85: ...85 Fig 53 30XW Low Voltage Control Wiring Schematic A30 4848 ...

Страница 86: ...T 10 RO Maintenance Display Tables LOADFACT Actual Chiller Current TOT_CURR MAIN MENU Status GENUNIT 23 RO Status Display Tables GENUNIT Air Cond Enter Valve A Q_HREA_A MAIN MENU Status QCK_TST2 3 RW Status Display Tables QCK_TST2 Air Cond Enter Valve B Q_HREA_B MAIN MENU Status QCK_TST2 7 RW Status Display Tables QCK_TST2 Air Cond Entering Valv A hr_ea_a MAIN MENU Status RECLAIM 15 RO Status Disp...

Страница 87: ...tatus STATEGEN 38 RO Status Display Tables STATEGEN Circuit Loading Sequence lead_cir MAIN MENU Config USER 1 RW Configuration Tables USER Comm Failure Retry Time RETRY_TM MAIN MENU Config ALARMDEF 3 RW Configuration Tables ALARMDEF ALARMS01 Comp A Must Trip Amps cpa_mtac MAIN MENU Service FACTORY2 2 RW Service Configuration Tables FACTORY2 Comp A S1 Config Switch 8 1 cpa_s1_c MAIN MENU Service FA...

Страница 88: ...play Tables GENUNIT Controlled Temp Error tp_error MAIN MENU Maint LOADFACT 7 RO Maintenance Display Tables LOADFACT Controlled Water Temp CTRL_WT MAIN MENU Status GENUNIT 29 RO Status Display Tables GENUNIT Cool Changeover Setpt cauto_sp MAIN MENU Setpoint SETPOINT 29 RW Setpoint Configuration Tables SETPOINT Cooler Entering Fluid COOL_EWT MAIN MENU Status STATEGEN 33 RO Status Display Tables STA...

Страница 89: ...ur_30_c MAIN MENU Maint LOADFACT 14 RO Maintenance Display Tables LOADFACT Current Control on_ctrl MAIN MENU Status STATEGEN 4 RO Status Display Tables STATEGEN Current Cooling Power cool_pwr MAIN MENU Status FREECOOL 4 RO Status Display Tables FREECOOL Current Full Reset Value v_cr_fu MAIN MENU Setpoint SETPOINT 10 RW Setpoint Configuration Tables SETPOINT Current Full Reset Value v_hr_fu MAIN ME...

Страница 90: ... MENU Maint DEFROSTM 16 RO Maintenance Display Tables DEFROSTM Defrost Fan Offset Cal B def_of_b MAIN MENU Maint DEFROSTM 33 RO Maintenance Display Tables DEFROSTM Defrost Fan Start Cal A def_ca_a MAIN MENU Maint DEFROSTM 15 RO Maintenance Display Tables DEFROSTM Defrost Fan Start Cal B def_ca_b MAIN MENU Maint DEFROSTM 32 RO Maintenance Display Tables DEFROSTM Defrost Number Circuit A nb_def_a MA...

Страница 91: ...ys cpump2_m MAIN MENU Maint SERMAINT 11 RO Maintenance Display Tables SERMAINT DLY 5 Condenser Pump 1 days hpump1_m MAIN MENU Maint SERMAINT 12 RO Maintenance Display Tables SERMAINT DLY 6 Condenser Pump 2 days hpump2_m MAIN MENU Maint SERMAINT 13 RO Maintenance Display Tables SERMAINT DLY 7 Water Filter days wfilte_m MAIN MENU Maint SERMAINT 14 RO Maintenance Display Tables SERMAINT DLY 8 Cp A Oi...

Страница 92: ...splay Tables GENUNIT EXV A Maximum Steps Numb exva_max MAIN MENU Service FACTORY2 18 RW Service Configuration Tables FACTORY2 EXV A Superheat Setpoint sh_sp_a MAIN MENU Service SERVICE1 9 RW Service Configuration Tables SERVICE1 EXV B Maximum Steps Numb exvb_max MAIN MENU Service FACTORY2 19 RW Service Configuration Tables FACTORY2 EXV B Superheat Setpoint sh_sp_b MAIN MENU Service SERVICE1 10 RW ...

Страница 93: ...anc3 MAIN MENU Service UPDHRFAN 30 RW Service Configuration Tables UPDHRFAN Fan 3 Hours Circuit A hr_fana3 MAIN MENU Status FANHOURS 7 RO Status Display Tables FANHOURS Circuit B hr_fanb3 MAIN MENU Status FANHOURS 17 RO Status Display Tables FANHOURS Circuit C hr_fanc3 MAIN MENU Status FANHOURS 27 RO Status Display Tables FANHOURS Fan 4 Hours Circuit A hr_fana4 MAIN MENU Service UPDHRFAN 11 RW Ser...

Страница 94: ...nc9 MAIN MENU Status FANHOURS 33 RO Status Display Tables FANHOURS Fan 10 Hours Circuit A hrfana10 MAIN MENU Service UPDHRFAN 17 RW Service Configuration Tables UPDHRFAN Circuit B hrfanb10 MAIN MENU Service UPDHRFAN 27 RW Service Configuration Tables UPDHRFAN Circuit C hrfanc10 MAIN MENU Service UPDHRFAN 37 RW Service Configuration Tables UPDHRFAN Fan 10 Hours Circuit A hrfana10 MAIN MENU Status F...

Страница 95: ...OOL Circuit B FAN_ST_B MAIN MENU Status FREECOOL 23 RO Status Display Tables FREECOOL Circuit C FAN_ST_C MAIN MENU Status FREECOOL 33 RO Status Display Tables FREECOOL Flow Checked if C Pump Off pump_loc MAIN MENU Config USER 17 RW Configuration Tables USER Free Cool A Ball Valve Q_FCBVL_A MAIN MENU Status QCK_TST2 18 RO Status Display Tables QCK_TST2 Free Cool A EXV Position Q_FCEXVA MAIN MENU St...

Страница 96: ... High Pres Override Cir B Mode_28 MAIN MENU Status MODES 29 RO Status Display Tables MODES High Pres Override Cir C Mode_29 MAIN MENU Status MODES 30 RO Status Display Tables MODES High Pressure Threshold hp_th MAIN MENU Service SERVICE1 16 RW Service Configuration Tables SERVICE1 High Tiers Display Selec highdisp MAIN MENU Service FACTORY 18 RW Service Configuration Tables FACTORY Holiday Duratio...

Страница 97: ...Tables MODES Low Superheat Circuit C Mode_32 MAIN MENU Status MODES 33 RO Status Display Tables MODES LWT OAT Delta fc_delta MAIN MENU Status FREECOOL 3 RO Status Display Tables FREECOOL mA For 0 Demand Limit lim_ze MAIN MENU Config USER 29 RW Configuration Tables USER mA For 100 Demand Limit lim_mx MAIN MENU Config USER 28 RW Configuration Tables USER Machine Operating Hours hr_mach MAIN MENU Ser...

Страница 98: ...isplay Tables CIRCA_AN Circuit B DOP_B MAIN MENU Status CIRCB_AN 7 RO Status Display Tables CIRCB_AN Circuit C DOP_C MAIN MENU Status CIRCC_AN 7 RO Status Display Tables CIRCC_AN Oil Solenoid Circuit A Q_OILS_A MAIN MENU Status QCK_TST1 16 RW Status Display Tables QCK_TST1 Circuit B Q_OILS_B MAIN MENU Status QCK_TST1 23 RW Status Display Tables QCK_TST1 Circuit C Q_OILS_C MAIN MENU Status QCK_TST1...

Страница 99: ...2S 8 RO Maintenance Display Tables OCCDEFCM OCC2PO2S Next Session Allowed In fc_next MAIN MENU Status FREECOOL 6 RO Status Display Tables FREECOOL Next Unoccupied Day NXTUNDAY MAIN MENU Maint OCCDEFCM OCC1PO1S 9 RO Maintenance Display Tables OCCDEFCM OCC1PO1S Next Unoccupied Day NXTUNDAY MAIN MENU Maint OCCDEFCM OCC2PO2S 9 RO Maintenance Display Tables OCCDEFCM OCC2PO2S Next Unoccupied Time NXTUNT...

Страница 100: ...lay Tables GENUNIT Period DOW MTWTFSSH DOW MAIN MENU Schedule OCCPC01S 2 RO Configuration Tables OCCPC01S Pinch offset circuit A p_ofst_a MAIN MENU Service SERVICE1 12 RW Service Configuration Tables SERVICE1 Pinch offset circuit B p_ofst_b MAIN MENU Service SERVICE1 13 RW Service Configuration Tables SERVICE1 Pinch offset circuit C p_ofst_c MAIN MENU Service SERVICE1 14 RW Service Configuration T...

Страница 101: ...fan hd_pg MAIN MENU Service SERVICE1 6 RW Service Configuration Tables SERVICE1 Pump Auto Rotation Delay pump_del MAIN MENU Config USER 14 RW Configuration Tables USER Pump Periodic Start Mode_08 MAIN MENU Status MODES 9 RO Status Display Tables MODES Pump Sticking Protection pump_per MAIN MENU Config USER 15 RW Configuration Tables USER Pumpdown Pressure Cir A PD_P_A MAIN MENU Status RECLAIM 11 R...

Страница 102: ...us Display Tables MODES Reset Maintenance Alert S_RESET MAIN MENU Maint SERMAINT 1 RO Maintenance Display Tables SERMAINT Reset Setpnt 4 20mA Sgnl SP_RESET MAIN MENU Status STATEGEN 41 RO Status Display Tables STATEGEN Reverse Alarms Relay al_rever MAIN MENU Config USER 43 RW Configuration Tables USER Rotate Condenser Pumps ROTHPUMP MAIN MENU Status STATEGEN 25 RO Status Display Tables STATEGEN Ro...

Страница 103: ...MENU Maint BOARD_PN 17 RO Maintenance Display Tables BOARD_PN S1 Config Switch 8 1 cpc_s1_m MAIN MENU Maint BOARD_PN 21 RO Maintenance Display Tables BOARD_PN Second Setpoint in Use Mode_02 MAIN MENU Status MODES 3 RO Status Display Tables MODES Serial Number SerialNo MAIN MENU Config Ctlr ID 5 RO Configuration Tables CtlrID PD5_XAXQ Service Test Enable Q_STREQ MAIN MENU Status SERV_TST 1 RW Statu...

Страница 104: ...OVERLAST MAIN MENU Maint OCCDEFCM OCC1PO1S 3 RO Maintenance Display Tables OCCDEFCM OCC1PO1S Timed Override in Effect OVERLAST MAIN MENU Maint OCCDEFCM OCC2PO2S 3 RO Maintenance Display Tables OCCDEFCM OCC2PO2S Total Fans NB Circuit A nb_fan_a MAIN MENU Service FACTORY2 14 RW Service Configuration Tables FACTORY2 Circuit B nb_fan_b MAIN MENU Service FACTORY2 15 RW Service Configuration Tables FACT...

Страница 105: ...l 1 Partial 2 Shutdown GENUNIT ALM 68 EMGY Emergency Stop DSBL ENBL GENUNIT EMSTOP CH SS CCN Chiller Start Stop DSBL ENBL GENUNIT CHILL_S_S HC ST Heat Cool Status 0 Cooling 1 Heating 2 Standby Heating and Standby not supported GENUNIT HEATCOOL 45 RC ST Reclaim Select Status NO YES Not supported GENUNIT reclaim_sel TIME Time of Day XX XX 00 00 23 59 N A TIME MNTH Month of Year 1 January 2 February ...

Страница 106: ... 999999 forcible FANHOURS hrfanb10 FR C1 Fan 1 Run Hours Cir C XXXX hours 0 999999 forcible FANHOURS hr_fanc1 FR C2 Fan 2 Run Hours Cir C XXXX hours 0 999999 forcible FANHOURS hr_fanc2 FR C3 Fan 3 Run Hours Cir C XXXX hours 0 999999 forcible FANHOURS hr_fanc3 FR C4 Fan 4 Run Hours Cir C XXXX hours 0 999999 forcible FANHOURS hr_fanc4 FR C5 Fan 5 Run Hours Cir C XXXX hours 0 999999 forcible FANHOURS...

Страница 107: ...ion XXX 0 100 forcible N A SPD B Cir B Varifan position XXX 0 100 forcible N A SPD C Cir C Varifan position XXX 0 100 forcible N A HT A Oil Heater Circuit A OFF ON forcible SL1 A Slide Valve 1 Cir A OFF ON forcible SL2 A Slide Valve 2 Cir B OFF ON forcible HGP A Hot Gas Bypass A Output OFF ON forcible OLS A Oil Solenoid Cir A OFF ON forcible DGT A DGT Cool Solenoid A OFF ON forcible HT B Oil Heate...

Страница 108: ...Circ A XXX X F C CIRCA_AN SH_A ECT A Economizer Gas Temp A XXX X deg F deg C 40 245 F 40 118 C ECO_TP_A ESH A Economizer Superheat A XXX X deg F deg C 40 245 F 40 118 C ECO_SH_A CTP A Motor Temperature Cir A XXX X deg F deg C 40 245 F 40 118 C CP_TMP_A CIR B CIRCUIT B TEMPERATURES SCT B Sat Cond Temp Circ B XXX X deg F deg C 40 245 F 40 118 C CIRCB_AN SCT_B SST B Sat Suction Temp Circ B XXX X deg ...

Страница 109: ...ngeover Setpt XX X deg F deg C Default 75 0 Not supported forcible SETPOINT cauto_sp CRMP Cool Ramp Loading X X 0 2 2 0 F 0 1 1 1 C Default 1 0 forcible SETPOINT cramp_sp 35 HEAT HEATING SETPOINTS HSP 1 Heating Setpoint 1 XXX X deg F deg C Default 100 Not supported forcible SETPOINT HSP 1 HSP 2 Heating Setpoint 2 XXX X deg F deg C Default 100 Not supported forcible SETPOINT HSP 2 HRV1 Current to R...

Страница 110: ...PANSION UNITS RANGE COMMENT WRITE STATUS CCN TABLE CCN POINT PAGE NO GEN I GENERAL INPUTS ONOF On Off Switch OPEN CLSE STATEGEN ONOF LOCK Cooler Interlock OPEN CLSE STATEGEN LOCK_1 44 COND Condenser Flow Switch OPEN CLSE Not supported STATEGEN CONFLOW DLS1 Demand Limit Switch 1 OPEN CLSE STATEGEN LIM_SW1 39 40 DLS2 Demand Limit Switch 2 OPEN CLSE STATEGEN LIM_SW2 39 40 ICE D Ice Done OFF ON STATEG...

Страница 111: ...cuit C OFF ON CIRCC_D OIL_HT_C SL1 C Slide Valve 1 Cir C OFF ON SLID1_C SL2 C Slide Valve 2 Cir C OFF ON SLID2_C OLS C Oil Solenoid Cir C OFF ON OIL_SL_C HGB C Hot Gas Bypass Cir C OFF ON FAN C Circuit C Fan Stages X 0 6 CIRCC_D FAN_ST_C SPD C Circ C Varifan Position XXX 0 100 CIRCC_AN hd_pos_c EXV C Circuit C EXV Open XXX 0 100 CIRCC_AN EXV_C ECO C Circ C EXV ECO Open XXX 0 100 EXV_EC_C DGT C DGT...

Страница 112: ...stalled NO YES NO FACTORY emm_nrcp PAS E Password Enable ENBL DSBL FACTORY pass_enb PASS Factory Password XXX 1 to 0150 0111 FACTORY fac_pass CO HT Cooler Heater Select NO YES Not supported heat_sel CON V Condenser Valve Select NO YES NO cond_val 46 76 HGBP Hot Gas Bypass Select NO YES Not supported NO FACTORY hgbp_sel 29 76 MCHX MCHX Exchanger Select NO YES Not supported NO FACTORY mchx_sel HI TI...

Страница 113: ... 100 USER nh_limit 55 RV AL Reverse Alarms Relay NO YES NO USER al_rever OA TH Heat Mode OAT Threshold XX X deg F deg C Not supported 5 F USER heat_th FREE Free Cooling OAT Limit XX X deg F deg C Not supported 32 0 USER free_oat CUR S Current Limit Select NO YES NO curr_sel 39 41 CUR F Current Limit at 100 XXXX 0 to 5000 2000 curr_ful 40 41 RSET RESET DEMAND LIMIT MASTER SLAVE CRST Cooling Reset T...

Страница 114: ...4 PER 3 TUE 3 Tuesday Select NO YES forcible OCC1P01S DOW3 24 PER 3 WED 3 Wednesday Select NO YES forcible OCC1P01S DOW3 24 PER 3 THU 3 Thursday Select NO YES forcible OCC1P01S DOW3 24 PER 3 FRI 3 Friday Select NO YES forcible OCC1P01S DOW3 24 PER 3 SAT 3 Saturday Select NO YES forcible OCC1P01S DOW3 24 PER 3 SUN 3 Sunday Select NO YES forcible OCC1P01S DOW3 24 PER 3 HOL 3 Holiday Select NO YES fo...

Страница 115: ...aturday Select NO YES forcible OCC2P02S DOW2 24 PER 2 SUN 2 Sunday Select NO YES forcible OCC2P02S DOW2 24 PER 2 HOL 2 Holiday Select NO YES forcible OCC2P02S DOW2 24 PER 3 Period 3 Occ Unocc Sel PER 3 OCC 3 Occupied Time XX XX 00 00 23 59 forcible OCC2P02S OCCTOD 24 PER 3 UNO 3 Unoccupied Time XX XX 00 00 23 59 forcible OCC2P02S UNOCTOD3 24 PER 3 MON 3 Monday Select NO YES forcible OCC2P02S DOW3 ...

Страница 116: ...ible HOLDY_01 HOL_DAY 24 HOL 1 DUR 1 Holiday Duration in Days XX 1 to 99 forcible HOLDY_01 HOL_LEN 24 HOL 1 HOL 2 Holiday 2 Configuration 24 HOL 1 MON 2 Holiday Start Month See HOL 1 MON 1 forcible HOLDY_02 HOL_MON 24 HOL 2 DAY 2 Holiday Start Day See HOL 1 DAY 1 forcible HOLDY_02 HOL_DAY 24 HOL 2 DUR 2 Holiday Duration in Days See HOL 1 DUR 1 forcible HOLDY_02 HOL_LEN 24 HOL 16 HO 16 Holiday 16 C...

Страница 117: ...at Cool Select Cooling Heating Auto Chgover Heat Cool Sw Default Cooling Not supported Not supported Not supported forcible GENUNIT HC_SEL 25 MODE OPERATING MODES MD01 First Active Mode 0 32 MODES MD02 Second Active Mode 0 32 MODES MD03 Third Active Mode 0 32 MODES MD04 Fourth Active Mode 0 32 MODES MD05 Fifth Active Mode 0 32 MODES MD06 Sixth Active Mode 0 32 MODES ITEM EXPANSION UNITS RANGE COMM...

Страница 118: ...ANEOUS Ball Valve Position OPEN CLSE ISO_REFA Ball Valve Closing Out ON OFF ISO_CL_A Ball Valve Opening Out ON OFF ISO_OP_A 4 Way Refrigerant Valve ON OFF RV_A CIRCB_AN CIRCUIT B ANALOG VALUES Percent Total Capacity 0 100 CAPB_T Discharge Pressure nnn n psi DP_B Suction Pressure nnn n psi SP_B Economizer Pressure nnn n psi ECON_P_B Oil Pressure nnn n psi OP_B Oil Pressure Difference nnn n psi DOP_...

Страница 119: ...ll Valve Position OPEN CLSE ISO_REFC Ball Valve Closing Out ON OFF ISO_CL_C Ball Valve Opening Out ON OFF ISO_OP_C FAN HOURS Free Cool A Pump Hours nnnnn hours hr_fem_a Free Cool B Pump Hours nnnnn hours hr_fem_b Circuit A Defrost Number nnnnn ub_def_a Circuit B Defrost Number nnnnn ub_def_b Circuit A Fan 1 Hours nnnnn hours hr_fana1 Circuit A Fan 2 Hours nnnnn hours hr_fana2 Circuit A Fan 3 Hours...

Страница 120: ...Chiller Current Limit nnn amps CURR_LIM forcible Current Setpoint nnn n F SP Setpoint Occupied Yes No SP_OCC forcible Setpoint Control Setpt 1 Setpt 2 Ice_sp 4 20mA Auto sp_ctrl Control Point nnn n F CTRL_PNT forcible Controlled Water Temp nnn n F CTRL_WT External Temperature nnn n F OAT Emergency Stop Enable Disable EMSTOP forcible MODES Startup Delay in Effect Yes No Mode_01 Second Setpoint in U...

Страница 121: ... Circuit C Slide Valve 2 Off On Q_SLI_2C forcible Cir C Heater Ball Valve Off On Q_BVL_C forcible Cir C Hot Gas Bypass Off On Q_HGBP_C forcible Cooler Heater Output Off On Q_CL_HT forcible Water Exchanger Pump 1 Off On Q_PMP1 forcible Water Exchanger Pump 2 Off On Q_PMP2 forcible Condenser Pump 1 Off On Q_HPMP1 forcible Condenser Pump 2 Off On Q_HPMP2 forcible Chiller Ready Output Off On Q_READY f...

Страница 122: ...erant Pump Out On Off fc_pmp_a Pump Inlet Pressure nnn kPa fc_inp_a Pump Outlet Pressure nnn kPa fc_oup_a Pump Differential Pressure nnn kPa fc_dp_a EXV Position nnn n EXV_A CIRCUIT B Free Cooling Active Yes No fc_on_b Fan Staging Number 1 to 6 FAN_ST_B 3 Way Valve Position nnn fc_vlv_b 3 Way Valve Status Opening Closing FC_VLV_B Refrigerant Pump Out On Off fc_pmp_b Pump Inlet Pressure nnn kPa fc_...

Страница 123: ...verride Switch Open Clse OCC_OVSW Ice Done Storage Switch Open Clse ICE_SW Cooler Flow Switch Open Clse FLOW_SW Cooler Pump Run Status Open Clse CPUMPDEF Condenser Flow Status On Off CONDFLOW Remote Interlock Status Open Clse REM_ LOCK Electrical Box Interlock Open Clse ELEC_BOX UNIT DISCRETE OUT Cooler Flow Setpoint Out On Off SET_FLOW Electrical Heat Stage 0 4 Off EHS_STEP Cooler Pump 1 Command ...

Страница 124: ...termi nation will be done without broadcasting through the bus 2 ccnbroad OAT Broadcast Bus 0 to 239 0 oatbusnm Element 0 to 239 0 oatlocad DAYLIGHT SAVING SELECT Disable Enable Disable dayl_sel ENTERING Month 1 to 12 3 startmon Day of week 1 Monday 1 to 7 7 startdow Week Number of Month 1 to 5 5 startwom LEAVING Month 1 to 12 10 Stopmon Day of week 1 Monday 1 to 7 7 Stoptdow Week Number of Month ...

Страница 125: ...2 tab_nb_8 Display n var number 8 34 var_nb_8 Display n table number 9 0 tab_nb_9 Display n var number 9 0 var_nb_9 DISPCONF Metric Display on STDU Yes No No DISPUNIT Language Selection 0 English 1 Espanol 2 Francais 3 Portugues 4 Translated 0 LANGUAGE MST_SLV MASTER SLAVE CONTROL Master Slave Select 0 Disable 1 Master 2 Slave 0 ms_sel Master Control Type 1 Local Control 2 Remote Control 3 CCN Con...

Страница 126: ...ng Sequence 0 3 0 Auto 1 A Lead 2 B Lead 3 C Lead 0 lead_cir Staged Loading Sequence No Yes No seq_typ Ramp Loading Select No Yes No ramp_sel Unit Off to On Delay 1 15 1 min off_on_d Condenser Pumps Sequence 0 4 0 hpumpseq Cooler Pumps Sequence 0 4 0 No Pump 1 One Pump Only 2 Two Pumps Auto 3 Pump 1 Manual 4 Pump 2 Manual 0 cpumpseq Pump Auto Rotation Delay 24 3000 48 hours pump_del Pump Sticking ...

Страница 127: ...X Board 2 Part Number XXXXXXXX aux_brd2 AUX Board 3 Part Number XXXXXXXX aux_brd3 AUX Board 4 Part Number XXXXXXXX aux_brd4 AUX Board 5 Part Number XXXXXXXX aux_brd5 EMM NRCP2 Board XXXXXXXX emm_nrcp Reclaim NRCP2 Board XXXXXXXX rec_nrcp TCPM Board Comp A XXXXXXXX cpa_vers Must Trip Amps 0 600 amps cpa_mtam S1 Config Switch 8 to 1 00000000 0 cpa_s1_m TCPM Board Comp B nnnn cpb_vers Must Trip Amps ...

Страница 128: ...ntrolled Temp Error nnn n F tp_error Actual Capacity nnn cap_t Actual Capacity Limit nnn cap_lim Actual Chiller Current nnnn amps TOT_CURR Chiller Current Limit nnnn amps CURR_LIM Current At 30 Load A nnnn amps cur_30_a Current At 30 Load B nnnn amps cur_30_b Current At 30 Load C nnnn amps cur_30_c Current At 100 Load A nnnn amps cur100_a Current At 100 Load B nnnn amps cur100_b Current At 100 Loa...

Страница 129: ...ng water control with no pump control lag_pump 1 lagstat TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS OCCMAINT Current Mode 1 occup 0 1 MODE Current Occp Period 1 to 8 PER_NO Timed Override in Effect Yes No OVERLAST Timed Override Duration 0 4 hours OVR_HRS Current Occupied Time 00 00 23 59 STRTTIME Current Unoccupied Time 00 00 23 59 ENDTIME Next Occupied Day Mon Sun NXTOCDAY Next Occup...

Страница 130: ...ower Frequence 60HZ Sel Yes No Yes freq_60H Power Supply Voltage 200 to 660 460 volts voltage NB Fans on Varifan Cir A 0 to 6 1 varfan_a NB Fans on Varifan Cir B 0 to 6 1 varfan_b NB Fans on Varifan Cir C 0 to 6 0 varfan_c Soft Starter Select Yes No No softstar Wye Delta Start Select Yes No No wye_delt Air Cooled Reclaim Sel Yes No No recl_opt Free Cooling Select Yes No No freecool Cooler Heater S...

Страница 131: ...4 4 F sh_sp_b EXV C Superheat Setpoint 12 6 44 14 4 F sh_sp_c Pinch offset circuit A 3 0 3 0 0 F p_ofst_a Pinch offset circuit B 3 0 3 0 0 F p_ofst_b Pinch offset circuit C 3 0 3 0 3 6 F p_ofst_c EXV MOP Setpoint 40 55 62 F mop_sp High Pressure Threshold 200 290 275 5 psi hp_th Cooler Heater Delta Spt 1 6 2 F heatersp Auto Start When SM Lost Enable Disable Disable auto_sm 3way Valve Min Position 0...

Страница 132: ... NAME RANGE UNITS POINT NAME WRITE STATUS TABLE TO BE USED FOR RUN TIMES UPDATE IN CASE OF CONTROL RETROFIT UPDTHOUR Machine Operating Hours 0 hours hr_mach Machine Starts 0 st_mach Compressor A Hours 0 hours hr_cp_a Compressor A Starts 0 st_cp_a Compressor B Hours 0 hours hr_cp_b Compressor B Starts 0 st_cp_b Compressor C Hours 0 hours hr_cp_c Compressor C Starts 0 st_cp_c Water Pump 1 Hours 0 ho...

Страница 133: ...OFF ON OFF OFF OFF 380 S1 OFF ON OFF OFF ON OFF OFF OFF OFF ON OFF OFF ON OFF OFF OFF 378 378 S2 OFF OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF OFF ON OFF OFF 30XW UNITSIZE VOLTAGE 3 ph 60Hz CPM DIP SWITCHES CIRCUIT A CIRCUIT B MTA SETTING CIRCUIT A MTA SETTING CIRCUIT B 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 150 325 575 S1 OFF ON OFF OFF ON OFF OFF OFF OFF ON OFF OFF ON OFF OFF OFF 282 282 S2 OFF OFF OF...

Страница 134: ...N ON ON ON OFF ON OFF 200 S1 ON OFF OFF OFF ON OFF OFF OFF ON OFF OFF OFF ON OFF OFF OFF 722 722 S2 OFF ON ON OFF ON ON ON OFF OFF ON ON OFF ON ON ON OFF 30XW UNIT SIZE VOLTAGE 3 ph 60Hz CPM DIP SWITCHES CIRCUIT A CIRCUIT B MTA SETTING CIRCUIT A MTA SETTING CIRCUIT B 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 150 325 575 S1 ON OFF OFF ON OFF OFF OFF OFF ON OFF OFF ON OFF OFF OFF OFF 282 282 S2 ON OFF OFF ON ...

Страница 135: ...135 APPENDIX E PIPING AND INSTRUMENTATION 30XW UNIT ECONOMIZED PIPING A30 4849 ...

Страница 136: ...136 APPENDIX E PIPING AND INSTRUMENTATION 30XW UNIT NON ECONOMIZED PIPING A30 4850 ...

Страница 137: ...n trol This is not applicable in this application TIME SCHEDULE TABLE NAME CHANGE NSTV When using NSTV to edit a Time Schedule Name the process is the same for both Local S or Network E Time Schedules 1 Highlight the chiller then at the top menu bar click on Configure Names 2 When the dialog box opens scroll down to find the four time schedules as seen in Fig A for Local Schedule or Fig B for Netw...

Страница 138: ...t Operating Modes SLCT SP SE then enter the password 2 Click the arrow up and select SETPOINT 1 then push Enter Step 4 Chiller Switch Setup 1 Set the Emergency On Off Switch SW2 switch to the On Position 2 Set the Enable Off Remote SW1 switch to the Enable position If Remote is used external contacts will need to be closed or a jumper needs to be installed on TB 5 no 9 10 The chiller will run off ...

Страница 139: ...139 APPENDIX F GLOBAL TIME SCHEDULE CONFIGURATION FOR i Vu DEVICE AND CSM CONTROLLER cont Fig F Schedule Type Example Weekly A30 4856 Fig G CCN Global Schedule Number A30 4857 ...

Страница 140: ...9 EXV board 13 EXV control 60 Main EXV control 59 Troubleshooting procedure 61 Emergency on off switch SW2 16 Enable off remote contact switch SW1 16 Energy Management Module EMM 16 Entering fluid control option 25 Flow rate requirements 47 Freeze protection 43 76 Fresh water 27 General Controls 9 Green LED 17 Head pressure control 46 Heat exchangers inspecting cleaning 66 Ice storage operation 41...

Страница 141: ... any physical damage Yes No Will this prevent start up Yes No Description ___________________________________________________________________________________________ ___________________________________________________________________________________________ 2 Unit is installed level as per the installation instructions Yes No 3 Power supply agrees with the unit nameplate Yes No 4 Correct control v...

Страница 142: ..._ Average voltage __________ A B A C B C 3 Maximum deviation from average voltage _______ Voltage imbalance ______ max deviation average voltage X 100 Is voltage imbalance less than 2 Yes No DO NOT start chiller if voltage imbalance is greater than 2 Contact local utility for assistance 8 Verify evaporator flow rate Pressure entering evaporator _____ psig Pressure leaving evaporator _____ psig Eva...

Страница 143: ...ion UNIT XXX Must Trip Amps Read Circuit B R MT B Configuration UNIT XXX S1 Config Switch Circuit A C SW A Configuration UNIT XXX S1 Config Switch Read Circuit A R CSA Configuration UNIT XXX S1 Config Switch Circuit B C SW B Configuration UNIT XXX S1 Config Switch Read Circuit B R CSB Configuration UNIT XXX Energy Management Module EMM Configuration UNIT NO YES NO Password Enable PAS E Configurati...

Страница 144: ...Configuration OPTN NO YES NO Flow Checked if C Pump On P LOC Configuration OPTN NO YES NO Start Hour Night Control LS ST Configuration OPTN XX XX 00 00 End Hour Night Control LS ND Configuration OPTN XX XX 00 00 Capacity Limit Night Control LS LT Configuration OPTN XXX 100 Reverse Alarms Relay RV AL Configuration OPTN NO YES NO Heating OAT Threshold OA TH Configuration OPTN XX X 5 F Current Limit ...

Страница 145: ...oint COOL XXX X 75 F Cooling Ramp Loading CRMP Set Point COOL X X 1 0 Heating Setpoint 1 HSP 1 Set Point HEAT XXX X 100 0 F Heating Setpoint 2 HSP 2 Set Point HEAT XXX X 100 0 F Current No Reset Value Heating HRV1 Set Point HEAT XXX X 0 Current Full Reset Value Heating HRV2 Set Point HEAT XXX X 0 Delta T No Reset Value Heating HRT1 Set Point HEAT XXX X 0 Delta T Full Reset Value Heating HRT2 Set P...

Страница 146: ...ON Circuit A Slide Valve 2 SL2 A Service Test QUIC OFF ON Circuit A Hot Gas Bypass HGP A Service Test QUIC OFF ON Circuit A Oil Solenoid OLS A Service Test QUIC OFF ON Circuit A DGT Cool Solenoid DGT A Service Test QUIC OFF ON Circuit B Oil Heater HT B Service Test QUIC OFF ON Circuit B Slide Valve 1 SL1 B Service Test QUIC OFF ON Circuit B Slide Valve 2 SL2 B Service Test QUIC OFF ON Circuit B Ho...

Страница 147: ..._____________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ _______________________...

Страница 148: ...nge at any time specifications or designs without notice and without incurring obligations Catalog No 04 53300024 01 Printed in U S A Form 30XW 1T CL 8 2 10A 11 09 Replaces New Copyright 2009 Carrier Corporation CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE ...

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