Carrier Air Conditioner Control Module Communication, Carrier Comfort Network CCN Interface

Page 4

Control Module Communication

RED LED — Proper operation of the control boards can be visually checked by looking at the red status LEDs (light- emitting diodes). When operating correctly, the red status LEDs should be blinking in unison at a rate of once every 2 seconds. If the red LEDs are not blinking in unison, verify that correct power is being supplied to all modules. Be sure that the Main Base Board (MBB) is supplied with the current soft- ware. If necessary, reload current software. If the problem still persists, replace the MBB. A red LED that is lit continuously or blinking at a rate of once per second or faster indicates that the board should be replaced.

GREEN LED — The MBB has one green LED. The Local Equipment Network (LEN) LED should always be blinking whenever power is on. All other boards have a LEN LED which should be blinking whenever power is on. Check LEN connections for potential communication errors at the board J3 and/or J4 connectors. Communication between modules is ac- complished by a 3-wire sensor bus. These 3 wires run in paral- lel from module to module. The J4 connector on the MBB pro- vides both power and communication directly to the marquee display only.

YELLOW LED — The MBB has one yellow LED. The Carrier Comfort Network (CCN) LED will blink during times of network communication.

Carrier Comfort Network (CCN) Interface —

The 30GTN,R chiller units can be connected to the CCN if desired. The communication bus wiring is a shielded, 3-conductor cable with drain wire and is supplied and installed in the field. The system elements are connected to the commu- nication bus in a daisy chain arrangement. The positive pin of each system element communication connector must be wired to the positive pins of the system elements on either side of it. This is also required for the negative and signal ground pins of each system element. Wiring connections for CCN should be made at TB3. Consult the CCN Contractor’s Manual for fur- ther information.

NOTE: Conductors and drain wire must be 20 AWG (Amer- ican Wire Gage) minimum stranded, tinned copper. Individual conductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum operating temperature range of –20 C to 60 C is required. Wire manufactured by Alpha (2413 or 5463), American (A22503), Belden (8772), or Columbia (02525) meets the above mentioned requirements.

It is important when connecting to a CCN communication bus that a color coding scheme be used for the entire network to simplify the installation. It is recommended that red be used for the signal positive, black for the signal negative, and white for the signal ground. Use a similar scheme for cables contain- ing different colored wires.

At each system element, the shields of its communication bus cables must be tied together. If the communication bus is entirely within one building, the resulting continuous shield must be connected to a ground at one point only. If the commu- nication bus cable exits from one building and enters another, the shields must be connected to grounds at the lightning sup- pressor in each building where the cable enters or exits the building (one point per building only). To connect the unit to the network:

1.Turn off power to the control box.

2.Cut the CCN wire and strip the ends of the red (+), white (ground), and black (–) conductors. (Substitute appropri- 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).

IMPORTANT: A shorted CCN bus cable will prevent some routines from running and may prevent the unit from starting. If abnormal conditions occur, unplug the connector. If conditions return to normal, check the CCN connector and cable. Run new cable if necessary. A short in one section of the bus can cause problems with all system elements on the bus.

Table 2 — Thermistor Designations

THERMISTOR

PIN

 

CONNECTION

THERMISTOR INPUT

NO.

 

 

POINT

 

 

 

 

T1

 

J8-13,14 (MBB)

Cooler Leaving Fluid

T2

 

J8-11,12 (MBB)

Cooler Entering Fluid

T3

 

J8-21,22 (MBB)

Saturated Condensing

 

 

Temperature, Ckt A

 

 

 

T4

 

J8-15,16 (MBB)

Saturated Condensing

 

 

Temperature, Ckt B

 

 

 

T5

 

J8-24,25 (MBB)

Cooler Suction Temperature,

 

 

Ckt A (EXV Only)

 

 

 

T6

 

J8-18,19 (MBB)

Cooler Suction Temperature,

 

 

Ckt B (EXV Only)

 

 

 

T7

 

J5-11,12 (EXV)

Compressor Suction Gas

 

 

Temperature, Ckt A (EXV Only)

 

 

 

T8

 

J5-9,10 (EXV)

Compressor Suction Gas

 

 

Temperature, Ckt B (EXV Only)

 

 

 

T9

 

J8-7,8 (MBB)

Outdoor-Air Temperature

 

 

Sensor or Dual Chiller LWT

 

 

 

Sensors (Accessory)

T10

 

J8-5,6 (MBB)

Remote Space Temperature

 

 

Sensor (Accessory)

 

 

 

 

LEGEND

 

EXV — Electronic Expansion Valve

 

MBB — Main Base Board

 

4

Page 3 Page 5
Image 4
Page 3 Page 5
Contents Safety Considerations ContentsGeneral ContentsIntroduction Major System Components Unit Sizes and Modular Combinations 30GTN,RUnit Sizes and Modular Combinations 30GUN,R Unit Nominal Section a Section B 30GTN,R Tons Unit 30GTN,RCarrier Comfort Network CCN Interface Control Module CommunicationThermistor 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 Regular Wiring Plenum Wiring Alpha 1895 American ManufacturerBelden 8205 Columbia D6451 Manhattan M13402 M64430 Quabik 6130Compressor Protection Control System Module Sizes Stepper Motor 12 VDC CEPL130351 Part Load Data Percent Displacement, Standard Units Displacement Compressors30GUN,R Approx110, 290B 255A 60 Hz330A/B 360B 50 Hz390B 60 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 TestRun Status Mode and Sub-Mode Directory SUB-MODE Keypad Range Item Expansion Comment Entry ViewStrt VersSUB-MODE Keypad Range Item Expansion Comment Entry Test Service Test Mode and Sub-Mode DirectoryOuts Pressure Mode and Sub-Mode Directory Temperature Mode and Sub-Mode DirectorySet Point Mode and Sub-Mode Directory Inputs Mode and Sub-Mode Directory Reading and Changing Chilled Fluid Set PointSUB-MODE Keypad Range Item Expansion Comment Entry GEN.I CrctConfiguration Mode and Sub-Mode Directory Outputs Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry GEN.O OPT1 OPT2CCN EMM240 RsetExample of Temperature Reset Return Fluid Configuration SUB-MODE Keypad Display Item Expansion Comment Entry RsetExample of Configuring Dual Chiller Control Slave Chiller Example of Configuring Dual Chiller Control Master ChillerSUB-MODE Keypad Entry Display Item Expansion Comment Rset Example of Compressor Lead/Lag Configuration Time Clock Mode and Sub-Mode DirectorySUB-MODE Keypad Display Item Expansion Comment Entry OPT2 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 AlarmsConfiguring Temperature Reset Mode Keypad SUB-MODEConfiguration Entry ExpansionRED LED Entry Expansion Configuration Configuring Demand Limit DLS2Troubleshooting To 20 mA Demand LimitingPage Alarm and Alert Codes T051By Control Method Cause Code Alert GENERATED? EWTFSM LCWT153 T155T170 T173T203 T204T205 T206Service Electronic ComponentsOil Charge 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 Drop B 5K Thermistor Temperature F vs Resistance/VoltageDrop a 5K Thermistor Temperature C vs Resistance/Voltage Temp Voltage Resistance Drop 200,510 Pressure Switch Settings Psig kPa Switch Cutout CUT-IN30GTN,R Units 30GUN,R UnitsPRE-START-UP System CheckTemperature Limits for Standard Units TemperatureMaximum Ambient Temperature 125 START-UP and OperationRefrigerant Circuit Field WiringNominal and Minimum Cooler Fluid Flow Rates CWP ALMHgbps Energy Management Module EMM Wiring Compressor Expansion Board CXB Accessory Wiring Unit Configuration Settings OPTIONS1 Options ConfigurationDescription Status Default Units Point Description Status Default PointAlarmdef Alarm Definition Table OPTIONS2 Options ConfigurationAppendix a CCN Tables Resetcon Temperature Reset and Demand Limit Brodefs Broadcast POC Definition TableAunit General Unit Parameters Circaan Circuit a Analog ParametersCircadio Circuit a Discrete 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 CurrmodsLine Description Point CSM/FSM Equipment Table Type 621H, BlockDescription Status Point Appendix B Fluid Drop Pressure Curves Cooler Fluid Pressure Drop Curves 30GUN,GUR040-110Cooler Fluid Pressure Drop Curves 30GUN,GUR130-210 Appendix B Fluid Drop Pressure CurvesCooler 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 CatalogRemove and use for job file Preliminary Information START-UP Checklist for Comfortlink Chiller SystemsEquipment Chiller Model no Preliminary Equipment Check Check box if complete System Fluid Volume in Loop Type System UnitStart-UpUnit Start-Up Description Status Units Value Ctrl CcnaCcnb 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.

Carrier also emphasizes user comfort through its variable speed systems. These systems maintain consistent temperatures while minimizing temperature fluctuations, ensuring an even distribution of cool air throughout the home. Additionally, many Carrier models come with advanced air filtration systems, designed to capture allergens, dust, and other particulates, thereby improving indoor air quality.

The smart technology featured in Carrier air conditioners plays a key role in modern convenience. Many units are compatible with smart home systems, allowing users to control settings remotely via smartphones or voice-activated devices. With features like programmable thermostats, users can easily set cooling schedules to match their lifestyle, ensuring comfort while maximizing energy savings.

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.
Top Page Image Contents