Carrier Air Conditioner specifications Operating Modes, Mode no Item Expansion Description

Page 42

Table 23 — Operating Modes

MODE NO.

ITEM EXPANSION

DESCRIPTION

01

FSM CONTROLLING CHILLER

Flotronic™ System Manager (FSM) is controlling the chiller.

02

WSM CONTROLLING CHILLER

Water System Manager (WSM) is controlling the chiller.

03

MASTER/SLAVE CONTROL

Lead/Lag Chiller control is enabled.

04

LOW SOURCE PROTECTION

Not currently supported.

05

RAMP LOAD LIMITED

Ramp load (pulldown) limiting in effect. In this mode, the rate at which leaving

 

 

fluid temperature is dropped is limited to a predetermined value to prevent

 

 

compressor overloading. See CRMP set point in the Set Point Select (SLCT)

 

 

section of the Configuration mode. The pulldown limit can be modified, if

 

 

desired, to any rate from 0.2° F to 2° F (0.1° to 1° C)/minute.

 

 

 

06

TIMED OVERRIDE IN EFFECT

Timed override is in effect. This is a 1 to 4 hour temporary override of the

 

 

programmed schedule, forcing unit to Occupied mode. Override can be

 

 

implemented with unit under Local (Enable) or CCN control. Override

 

 

expires after each use.

07

LOW COOLER SUCTION TEMP A

Circuit A capacity may be limited due to operation of this mode. Control will

 

 

attempt to correct this situation for up to 10 minutes before shutting the cir-

 

 

cuit down. The control may decrease capacity when attempting to correct

 

 

this problem. See Alarms and Alerts section for more information.

 

 

 

08

LOW COOLER SUCTION TEMP B

Circuit B capacity may be limited due to operation of this mode. Control will

 

 

attempt to correct this situation for up to10 minutes before shutting the cir-

 

 

cuit down. The control may decrease capacity when attempting to correct

 

 

this problem. See Alarms and Alerts section for more information.

 

 

 

09

SLOW CHANGE OVERRIDE

Slow change override is in effect. The leaving fluid temperature is close to

 

 

and moving towards the control point.

10

MINIMUM OFF TIME ACTIVE

Chiller is being held off by Minutes Off Time (DELY) found under Options 2

 

 

(OPT2) section of Configuration mode.

11

LOW SUCTION SUPERHEAT A

Circuit A capacity may be limited due to operation of this mode. Control will

 

 

attempt to correct this situation for up to 5 minutes before shutting the cir-

 

 

cuit down. See Alarms and Alerts section for more information.

12

LOW SUCTION SUPERHEAT B

Circuit B capacity may be limited due to operation of this mode. Control will

 

 

attempt to correct this situation for up to 5 minutes before shutting the cir-

 

 

cuit down. See Alarms and Alerts section for more information.

13

DUAL SET POINT

Dual set point mode is in effect. Chiller controls to CSP.1 during occupied

 

 

periods and CSP.2 during unoccupied periods. Both CSP.1 and CSP.2 are

 

 

located under COOL in the Set Point mode.

14

TEMPERATURE RESET

Temperature reset is in effect. In this mode, chiller is using temperature

 

 

reset to adjust leaving fluid set point upward and is currently controlling to

 

 

the modified set point. The set point can be modified based on return fluid,

 

 

outdoor-air-temperature, space temperature, or 4 to 20 mA signal.

 

 

 

15

DEMAND LIMIT IN EFFECT

Demand limit is in effect. This indicates that the capacity of the chiller

 

 

is being limited by demand limit control option. Because of this limitation,

 

 

the chiller may not be able to produce the desired leaving fluid temperature.

 

 

Demand limit can be controlled by switch inputs or a 4 to 20 mA signal.

 

 

 

16

COOLER FREEZE PROTECTION

Cooler fluid temperatures are approaching the Freeze point (see Alarms

 

 

and Alerts section for definition). The chiller will be shut down when either

 

 

fluid temperature falls below the Freeze point.

 

 

 

17

LO TMP COOL/HI TMP HEAT

Chiller is in Cooling mode and the rate of change of the leaving fluid is neg-

 

 

ative and decreasing faster than -0.5° F per minute. Error between leaving

 

 

fluid and control point exceeds fixed amount. Control will automatically

 

 

unload the chiller if necessary.

18

HI TMP COOL/LO TMP HEAT

Chiller is in Cooling mode and the rate of change of the leaving fluid is positive

 

 

and increasing. Error between leaving fluid and control point exceeds fixed

 

 

amount. Control will automatically load the chiller if necessary to better match

 

 

the increasing load.

 

 

 

19

MAKING ICE

Chiller is in an unoccupied mode and is using Ice Set Point 3 (CSP.3) to make

 

 

ice. The ice done input to the Energy Management Module (EMM) is open.

20

STORING ICE

Chiller is in an unoccupied mode and is controlling to Cooling Set Point 2

 

 

(CSP.2). The ice done input to the Energy Management Module (EMM) is

 

 

closed.

21

HIGH SCT CIRCUIT A

Chiller is in a cooling mode and the Saturated Condensing temperature read

 

 

by sensor T3 is greater than 140 F (60 C). No additional stages of capacity

 

 

will be added. Chiller may be unloaded if SCT continues to rise to avoid high-

 

 

pressure switch trips by reducing condensing temperature.

 

 

 

22

HIGH SCT CIRCUIT B

Chiller is in a cooling mode and the Saturated Condensing temperature read

 

 

by sensor T4 is greater than 140 F (60 C). No additional stages of capacity

 

 

will be added. Chiller may be unloaded if SCT continues to rise to avoid high-

 

 

pressure switch trips by reducing condensing temperature.

42

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Contents Safety Considerations ContentsContents GeneralIntroduction Unit Sizes and Modular Combinations 30GUN,R Major System ComponentsUnit Sizes and Modular Combinations 30GTN,R Unit Nominal Section a Section B 30GTN,R Tons Unit 30GTN,RControl Module Communication Carrier Comfort Network CCN InterfaceThermistor Designations Status Switches Output RelayPage 24 V Control Schematic, Unit Sizes 24 V Control Schematic, Unit Sizes 080-110, 230B-315B CCN LEN Data Communication Port Main Base Board Operating Data 040-110 130-210Thermistor T3 and T4 Locations Compressor Thermistor Locations T7 and T8 Belden 8205 Regular Wiring Plenum Wiring Alpha 1895 AmericanManufacturer Columbia D6451 Manhattan M13402 M64430 Quabik 6130Compressor Protection Control System Module Sizes Stepper Motor 12 VDC CEPL130351 30GUN,R Part Load Data Percent Displacement, Standard UnitsDisplacement Compressors Approx110, 290B 255A 60 Hz390B 60 Hz 330A/B360B 50 Hz 390B 50 HzB1† A1,B1 A1†,A2,B1 A1*,B1†,B2 Unloaded compressor Two unloaders, both unloaded 170, 270A 190, 290A, 360A/BA1*,B1*,B2 Required Hardware for Additional Unloaders 150-210Head Pressure Control PumpoutPower FAN Arrangement FAN Relay Normal ControlService Test See Both main power Scrolling Marquee DisplayModes GEN.O TestStrt Run Status Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry View VersService Test Mode and Sub-Mode Directory SUB-MODE Keypad Range Item Expansion Comment Entry TestOuts Temperature Mode and Sub-Mode Directory Pressure Mode and Sub-Mode DirectorySet Point Mode and Sub-Mode Directory SUB-MODE Keypad Range Item Expansion Comment Entry GEN.I Inputs Mode and Sub-Mode DirectoryReading and Changing Chilled Fluid Set Point CrctOutputs Mode and Sub-Mode Directory Configuration Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry GEN.O CCN OPT1OPT2 EMM240 RsetExample of Temperature Reset Return Fluid Configuration SUB-MODE Keypad Display Item Expansion Comment Entry RsetExample of Configuring Dual Chiller Control Master Chiller Example of Configuring Dual Chiller Control Slave ChillerSUB-MODE Keypad Entry Display Item Expansion Comment Rset SUB-MODE Keypad Display Item Expansion Comment Entry OPT2 Example of Compressor Lead/Lag ConfigurationTime Clock Mode and Sub-Mode Directory SUB-MODE Keypad Entry Item Expansion Comment Range TimeSetting an Occupied Time Schedule Operating Mode and Sub-Mode DirectoryMode no Item Expansion Description Operating ModesAlarms Mode and Sub-Mode Directory Example of Reading and Clearing AlarmsConfiguration Configuring Temperature ResetMode Keypad SUB-MODE Entry ExpansionRED LED Entry Expansion Configuration Configuring Demand Limit DLS2Troubleshooting To 20 mA Demand LimitingPage Alarm and Alert Codes T051FSM By Control Method Cause Code Alert GENERATED?EWT LCWT170 T153T155 T173T205 T203T204 T206Oil Charge ServiceElectronic Components Compressor OIL RequiredCooler Thermistor Locations Plugs Components for Part Number PluggingCondenser Coils Cooler Head Bolt Tightening Sequence Typical Tube SheetCondenser Fan Adjustment Hz Low Noise Fan Option Units Dimension FAN TypePrinted Circuit Board Connector Refrigerant Feed Components Each circuit hasThermistors Temperature Sensors 5K Thermistor Temperature F vs Resistance/Voltage Drop BDrop a 5K Thermistor Temperature C vs Resistance/Voltage Temp Voltage Resistance Drop 200,510 30GTN,R Units Pressure Switch Settings Psig kPaSwitch Cutout CUT-IN 30GUN,R UnitsPRE-START-UP System CheckMaximum Ambient Temperature 125 Temperature Limits for Standard UnitsTemperature START-UP and OperationField Wiring Refrigerant CircuitNominal and Minimum Cooler Fluid Flow Rates ALM CWPHgbps Energy Management Module EMM Wiring Compressor Expansion Board CXB Accessory Wiring Description Status Default Units Point Unit Configuration SettingsOPTIONS1 Options Configuration Description Status Default PointOPTIONS2 Options Configuration Alarmdef Alarm Definition TableAppendix a CCN Tables Resetcon Temperature Reset and Demand Limit Brodefs Broadcast POC Definition TableCircadio Circuit a Discrete Parameters Aunit General Unit ParametersCircaan Circuit a Analog Parameters Description Status Units Point ForceableCircban Circuit B Analog Parameters Circbdio Circuit B Discrete ParametersOptions Unit Parameters Strthour Description Status Units PointDescription Status Units Point Defaults CurrmodsCSM/FSM Equipment Table Type 621H, Block Line Description PointDescription Status Point Appendix B Fluid Drop Pressure Curves Cooler Fluid Pressure Drop Curves 30GUN,GUR040-110Appendix B Fluid Drop Pressure Curves Cooler Fluid Pressure Drop Curves 30GUN,GUR130-210Cooler Pressure Drop KEY Appendix B Fluid Drop Pressure Curves Cooler Fluid Pressure Drop Curves 30GUN,GUR230B-315B Cooler Fluid Pressure Drop Curves 30GTN,GTR040-110 Cooler Fluid Pressure Drop Curves 30GTN,GTR130-210 Appendix B Fluid Drop Pressure Curves Module B 30GTN,GTR230,245 Module B 30GTN,GTR255,290,315 Service Training Call for Free CatalogSTART-UP Checklist for Comfortlink Chiller Systems Remove and use for job file Preliminary InformationEquipment Chiller Model no Preliminary Equipment Check Check box if complete System Fluid Volume in Loop Type System UnitStart-UpUnit Start-Up Ccnb Description Status Units Value CtrlCcna BaudSlct Heating Cooling Setpoint Select CND.P RMT.A All Units

Air Conditioner specifications

Carrier Air Conditioners have long been synonymous with reliability and innovation in climate control. Founded by Willis Carrier, the inventor of modern air conditioning, the brand has continuously set industry standards through state-of-the-art technologies and features designed to enhance indoor comfort.

One of the standout features of Carrier air conditioners is their energy efficiency. Many models are equipped with advanced inverter technology, allowing the compressor to adjust its speed based on the cooling demand. This results in decreased energy consumption, which not only reduces utility bills but also lessens the environmental impact. Recognizing the importance of sustainable practices, Carrier has integrated eco-friendly refrigerants into their systems, further promoting energy-efficient operations.

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Durability and noise reduction are also central to the Carrier brand. Many models are designed with sound-dampening features, making them some of the quietest units on the market. This is particularly advantageous for residential use, where noise can disrupt daily activities and sleep.

In terms of design, Carrier air conditioners come in various styles and capacities to suit a wide range of spaces, from compact apartment units to large central systems for sprawling homes. Their extensive warranty and service offerings further reinforce Carrier’s commitment to customer satisfaction.

In conclusion, Carrier air conditioners represent a perfect blend of cutting-edge technology, energy efficiency, and user comfort. Their emphasis on sustainability and smart features positions them as a leading choice for homeowners seeking reliable and innovative climate control solutions. Whether for cooling a small room or an entire house, Carrier remains a trusted name in air conditioning.
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