Carrier 30GN040-420 Subfunction Keypad Entry Display Comment SET Points, Reset SET Points

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Table 9 Ð Keypad Directory (cont)

SET POINT

To read a set point, go to proper subfunction and read desired set point. To change a set point, enter new set point value, then press

.

LOCAL/ENABLE-STOP-CCN switch must be in LOCAL/ENABLE or STOP position.

 

 

 

 

 

 

SUBFUNCTION

KEYPAD ENTRY

DISPLAY

COMMENT

 

 

 

 

 

 

1 SET POINTS

 

SET POINT

Unit Set Point

 

 

 

CSP1 X

Chiller Fluid Set Point 1 (F)

 

 

 

CSP2 X

Chiller Fluid Set Point 2 (F)

 

 

 

HSPA X

Head Pressure Set Point Circuit A (F)

 

 

 

HSPB X

Head Pressure Set Point Circuit B (F)

 

 

 

CRAMP X

Cooling Ramp Loading Rate (F)

 

 

 

 

 

 

2 RESET SET POINTS

 

RESET

Reset Set Points

 

 

 

CRT1 X

Cooling reset at 20 mA (F)

 

 

 

CRT2N X

Reference Temperature at No Reset (F)

 

 

 

CRT2F X

Reference Temperature at Full Reset (F)

 

 

 

CRT2D X

Total Degrees of Reset (F)

 

 

 

CRT3N X

Chiller Fluid DT at No Reset (F)

 

 

 

CRT3F X

Chiller Fluid DT at Full Reset (F)

 

 

 

CRT3D X

Total Degrees of Reset (F)

 

 

 

 

 

 

3 DEMAND SET POINTS

 

DEMAND

Demand Set Points

 

 

 

DLS1 X²

Demand Switch 1 Set Point (percent)

 

 

 

DLS2 X²

Demand Switch 2 Set Point (percent)

 

 

 

DL20 X

Demand Limit at 20 mA (percent)

 

 

 

DLGN X

Loadshed Group Number

 

 

 

LSDD X

Loadshed Demand (percent)

 

 

 

TIME X

Minimum Loadshed Time (minutes)

 

 

 

 

 

 

4 DATE AND TIME

 

DATE.TIME

Date, Time and Day of Week

 

 

 

DOW.HR.MIN

Day 1 = Mon, 2 = Tues. . .7 = Sun

 

 

 

 

Hours are displayed in 24-hr time. Decimal point serves as colon.

 

 

 

MM.DD.YR

Month.Day.Year. When entering date, enter a decimal

 

 

 

 

point between entries. Each entry must be two numbers.

 

 

 

 

 

 

5 LEAVING CHILLER

 

LMT X

Leaving Chiller Fluid Alert Limit (F)

 

FLUID ALERT LIMIT

 

 

 

 

 

 

LEGEND

CCN Ð Carrier Comfort Network

EXV Ð Electronic Expansion Valve

MOP Ð Maximum Operating Pressure

*Will read ALARM or ALERT as appropriate. ²Must be con®gured.

**If applicable.

²²Not manually resettable.

NOTE: If metric option is selected under , temperature expressed as Celsius and pressure will be expressed as kPa.

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Contents Controls, Operation, Troubleshooting Tons Unit 30GN Unit Sizes and Modular CombinationsUnit Model Nominal Section a Section B 30GN Control Panel 040-110 Unit Shown Stop LOCAL/ENABLE-STOP-CCN Switch Positions and OperationLOCAL/ENABLE Keypad and Display Module Also Called HsioPressure Transducers Compressor Protection Control Module CpcsThermistor and Transducer Locations ThermistorsSteps Ð Capacity Control StepsLoading Sequence a Loading Sequence B Unit Control Ð Capacity Control Steps, 040-070 Ð Capacity Control Steps, 040-070 A1²**,B1² Displacement Compressors Approx 080, 230B 60 HzA1²,B1² A1²**, B1²090, 245B 50 Hz Compressors Displacement090, 245B 60 Hz 270B 60 Hz 100, 255B270B 50 Hz Unit Control Loading Sequence a Loading Sequence B315B 50 Hz 110, 290B315B 60 Hz A1*,A2,B1 A1,A2,B1 A1²²,A2,B1,B2 A1*,A2,B1,B2 130 60 Hz 150, 230A, 245A 130 50 HzA1,kB1 330A/B 60 Hz 170, 270A330A/B,360B 50 Hz 330A/B, 360B 50 Hz A1**,B1 Approx 190, 290A, 360A/B390B 60 Hz A1,B1420A/B 60 Hz 210, 315A, 390A420A/B 50 Hz Pumpout Head Pressure ControlFAN Arrangement FAN Numbers FAN Contactor Controlled by Condenser Fan SequenceOperative USE Keys Keypad and Display Module UsageFunctions and Subfunctions Function USE KeysKeypad Directory Accessing Functions and SubfunctionsSET Point TemperatureKeypad Directory Status Subfunction Keypad Entry Display Comment StageOutputs Subfunction Keypad Entry Display Comment PressureAnalog InputsUnloaders CPA1 Subfunction Keypad Entry Display CommentSubfunction Keypad Entry Display Comment Outputs Subfunction Keypad Entry Display Comment CompressorsKeypad Directory Test Keypad Directory Schedule Subfunction Keypad Entry Display Comment Factory Keypad Directory ServiceConfiguration ServiceHISTORY²² ALARM/ALERTSubfunction Keypad Entry Display Comment RUN Time StartsDate and Time Reset SET PointsSubfunction Keypad Entry Display Comment SET Points Demand SET PointsKeypad Display Comments Entry Response Example 1 Ð Reading Alarm CodesExample 2 Ð Reading Current Operating Modes Operational and Mode Display Codes Reset Set Points Example 3 Ð Using Test FunctionMeasurement Method Input Data Description Example 5A Ð External ResetReset Amounts Example 4 Ð Reading and Changing Chilled Fluid Set PointKeypad Display Comments Entry Response Example 5C Ð Using Return Fluid Temperature ResetPWR PowerSwitch Comm Ð Communications BusLoggedon Service FunctionsPassword SUB Keypad Display CommentExample 8 Ð Setting Time of Day Day of Week To Disable Demand Limit4-20 mA Demand Limiting Factory Conguration Keystrokes Adjustable Field CongurationsKeypad Display Comment Entry Programming Period Example 9 Ð Using the Schedule FunctionKeypad Display Comment Entry Programming PeriodEnter Display Example 10 Ð Holiday Schedule FunctionStop position. Unit cannot start if these contacts are Typical Stoppage Faults and Reset TypesLOCAL/ENABLE-STOP-CCN Alarm and Alert CodesWSM CpcsFSM HPS COM, CommDGT DsioComm CGF Subfunction. Groups Electronic Expansion Valve EXV EXV Cable Connections to EXV Driver Module, Dsio EXV Thermistor Replacement T1, T2, T7, T8 Temperature Voltage Resistance Drop Ohms Temperature Voltage Resistance Drop Thermistor and Pressure Transducer Locations Thermistor Locations Circuits a and B, Lead Compressor Only Lead Compressor Transducer and Thermistor Locations Control Modules Module Address Selector Switch LocationsAccessory Unloader Installation 4 In/4 Out Module SIO InstallationStandard and Accessory Unloaders TroubleshootingPage COM Or HGBPR-A²Or HGBPR-B Hgbpr ÐTB Ð Terminal Block Externally PoweredOutdoor-Air Temperature CWP Ð Chilled Water Fluid PumpInterlocks Remote AlarmPage Copyright 1995 Carrier Corporation

30GN040-420 specifications

The Carrier 30GN040-420 is a well-regarded model within the industry of chillers, designed to deliver efficient cooling solutions for a variety of commercial applications. Its compact design and advanced technology make it an ideal choice for businesses looking to optimize their HVAC systems.

One of the standout features of the Carrier 30GN series is its flexibility. This chiller model is available in a range of capacities, specifically from 40 to 420 tons, allowing for customized solutions based on specific cooling demands. Such versatility enables this unit to cater to a broad array of installations, from small commercial spaces to larger industrial facilities.

The Carrier 30GN040-420 utilizes a scroll compressor design, known for its reliability and efficiency. The scroll technology allows for a reduction in the number of moving parts, resulting in lower maintenance costs and increased durability. Additionally, the unit operates with environmentally friendly refrigerants such as R-410A, promoting sustainability without compromising performance.

Energy efficiency is another significant aspect of this model. The 30GN series is designed to provide high energy efficiency ratios (EER), which translates to lower operational costs for users over the lifespan of the unit. This is particularly beneficial in an era where energy costs are consistently rising.

The advanced controls found within the Carrier 30GN040-420 further enhance its performance and ease of use. The unit is equipped with a microprocessor-based control system that allows for precise temperature management while providing valuable diagnostic information. This feature not only improves the overall reliability of the system but also facilitates proactive maintenance, reducing the risk of unscheduled downtime.

Moreover, the design of the Carrier 30GN040-420 emphasizes quiet operation, making it suitable for environments where noise levels must be minimized. This characteristic is critical for applications in hospitals, schools, or office buildings, where a peaceful atmosphere is essential.

In summary, the Carrier 30GN040-420 chiller provides a robust solution for businesses requiring dependable and efficient cooling. Its features, including flexible capacity options, reliable scroll compressors, energy-efficient performance, advanced controls, and quiet operation, position it as a top choice for various commercial and industrial applications. As technology continues to evolve, models such as the 30GN series remain at the forefront, meeting the demands of modern HVAC needs while ensuring sustainability and efficiency.
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