Carrier Air Conditioner Service, Electronic Components, Oil Charge, Compressor OIL Required

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SERVICE

ELECTRIC SHOCK HAZARD.

Turn off all power to unit before servicing. The ENABLE/OFF/REMOTE CONTACT switch on control panel does not shut off con- trol power; use field disconnect.

Electronic Components

CONTROL COMPONENTS — Unit uses an advanced elec- tronic control system that normally does not require service. For details on controls refer to Operating Data section.

30GTN,R AND 30GUN,R 040-110, AND 230B-315B UNIT CONTROL BOX — When facing compressors, main control box is at left end of unit. All incoming power enters through main box. Control box contains power components and electronic controls.

Outer panels are hinged and latched for easy opening. Re- move screws to remove inner panels. Outer panels can be held open for service and inspection by using door retainer on each panel. To use door retainers: remove bottom pin from door re- tainer assembly, swing retainer out horizontally, and engage pin in one of the retainer ears and the hinge assembly.

30GTN,R AND 30GUN,R 130-210, 230A-315A, AND 330A/B-420A/B UNIT CONTROL AND MAIN POWER BOXES — The main power box is on the cooler side of the unit, and the control box is on the compressor side. Outer pan- els are hinged and latched for easy opening. Remove screws to remove inner panels.

Compressors — If lead compressor on either refrigerant circuit becomes inoperative for any reason, circuit is locked off and cannot be operated due to features built into the electronic control system. Do not attempt to bypass controls to force com- pressors to run.

COMPRESSOR REMOVAL — Access to the oil pump end of the compressor is from the compressor side of the unit. Ac- cess to the motor end of the compressor is from the inside of the unit. All compressors can be removed from the compressor side of the unit.

IMPORTANT: All compressor mounting hardware and support brackets removed during servicing must be rein- stalled prior to start-up.

Following the installation of the new compressor:

Tighten discharge valves to —

 

 

Compressor(s)

20 to 25 ft-lb (27 to 34 N-m)

06E250

80 to 90 ft-lb (109 to 122 N-m)

06E265,275,299

Tighten suction valves to —

 

80 to 90 ft-lb (109 to 122 N-m)

06E250

90 to 120 ft-lb (122 to 163 N-m)

06E265,275,299

Tighten the following fittings to —

 

120 in.-lb (13.5 N-m)

High-Pressure Switch

OIL CHARGE (Refer to Table 30) — All units are factory charged with oil. Acceptable oil level for each compressor is from 1/8 to 3/8-in. of sight glass (see Fig. 35).

When additional oil or a complete charge is required, use only Carrier-approved compressor oil.

30GTN,R approved oils are as follows:

Petroleum Specialties, Inc. — Cryol 150 (factory oil charge)

Texaco, Inc.

— Capella WF-32

Witco Chemical Co.

— Suniso 3GS

30GUN,R approved polyolester (POE) oils are as follows:

•Mobil Artic EAL 68

•Castrol SW68

•ICI Emkarate RL68H

•Lubrizol 29168 (Texaco HFC Capella 68NA)

•CPI Solest 68

Table 30 — Oil Charge

COMPRESSOR

 

OIL REQUIRED

Pts

 

L

 

 

06E250

14

 

6.6

06E265

19

 

9.0

06E275

19

 

9.0

06E299

19

 

9.0

Do not reuse drained oil or any oil that has been exposed to atmosphere.

Cooler — The cooler is easily accessible from the cooler side of the unit. The refrigerant feed components are accessible from the control box end of the unit.

COOLER REMOVAL — Cooler can be removed from the cooler side of the unit as follows:

Open and tag all electrical disconnects before any work begins. Note that cooler is heavy and both fluid-side and refrigerant-side may be under pressure.

1.To ensure the refrigerant is in the condenser, follow this procedure:

a.Open the circuit breakers and close the discharge valves for the lag compressors in both circuits.

Do not close the discharge valve of an operating compres- sor. Severe damage to the compressor can result.

b.After the lag compressor discharge service valves have been closed, close the liquid line service valve for one circuit. Allow the lead compressor to pump down that circuit until it reaches approxi- mately 10 to 15 psig (68.8 to 103.2 kPa).

c.As soon as the system reaches that pressure, shut down the lead compressor by opening the com- pressor circuit breaker, then quickly close the dis- charge service valve for that compressor.

d.Repeat the procedure for the other circuit.

2.Close the shutoff valves, if installed, in the cooler fluid lines. Remove the cooler fluid piping.

3.Cooler may be under pressure. Open the air vent at the top of the cooler, and open the drain on the bottom of the cooler (near the leaving fluid outlet) to drain the cooler. Both the drain and the air vent are located on the leaving fluid end of cooler. See Fig. 24. Remove the cooler water- side strainer.

4.Disconnect the conduit and cooler heater wires, if equipped. Remove all thermistors from the cooler, being sure to label all thermistors as they are removed. Ther- mistor T1 is a well-type thermistor, and thermistor T2 is immersed directly in the fluid. See Fig. 24.

5.Remove the insulation on the refrigerant connection end of the cooler.

6.Unbolt the suction flanges from the cooler head. Save the bolts.

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Contents Contents Safety ConsiderationsIntroduction ContentsGeneral Unit Sizes and Modular Combinations 30GTN,R Major System ComponentsUnit Sizes and Modular Combinations 30GUN,R Unit Nominal Section a Section B 30GTN,R Tons Unit 30GTN,RThermistor Designations Control Module CommunicationCarrier Comfort Network CCN Interface Output Relay Status SwitchesPage 24 V Control Schematic, Unit Sizes 24 V Control Schematic, Unit Sizes 080-110, 230B-315B CCN LEN Data Communication Port Main Base Board 040-110 130-210 Operating DataThermistor T3 and T4 Locations Compressor Thermistor Locations T7 and T8 Manufacturer Regular Wiring Plenum Wiring Alpha 1895 AmericanBelden 8205 Columbia D6451 Manhattan M13402 M64430 Quabik 6130Compressor Protection Control System Module Sizes Stepper Motor 12 VDC CEPL130351 Displacement Compressors Part Load Data Percent Displacement, Standard Units30GUN,R Approx255A 60 Hz 110, 290B360B 50 Hz 330A/B390B 60 Hz 390B 50 HzB1† A1,B1 A1†,A2,B1 A1*,B1†,B2 Unloaded compressor Two unloaders, both unloaded 190, 290A, 360A/B 170, 270AA1*,B1*,B2 150-210 Required Hardware for Additional UnloadersPumpout Head Pressure ControlFAN Arrangement FAN Relay Normal Control PowerScrolling Marquee Display Service Test See Both main powerGEN.O Test ModesSUB-MODE Keypad Range Item Expansion Comment Entry View Run Status Mode and Sub-Mode DirectoryStrt VersOuts Service Test Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry Test Set Point Mode and Sub-Mode Directory Temperature Mode and Sub-Mode DirectoryPressure Mode and Sub-Mode Directory Reading and Changing Chilled Fluid Set Point Inputs Mode and Sub-Mode DirectorySUB-MODE Keypad Range Item Expansion Comment Entry GEN.I CrctSUB-MODE Keypad Range Item Expansion Comment Entry GEN.O Outputs Mode and Sub-Mode DirectoryConfiguration Mode and Sub-Mode Directory OPT2 OPT1CCN EMMRset 240SUB-MODE Keypad Display Item Expansion Comment Entry Rset Example of Temperature Reset Return Fluid ConfigurationSUB-MODE Keypad Entry Display Item Expansion Comment Rset Example of Configuring Dual Chiller Control Master ChillerExample of Configuring Dual Chiller Control Slave Chiller Time Clock Mode and Sub-Mode Directory Example of Compressor Lead/Lag ConfigurationSUB-MODE Keypad Display Item Expansion Comment Entry OPT2 SUB-MODE Keypad Entry Item Expansion Comment Range TimeOperating Mode and Sub-Mode Directory Setting an Occupied Time ScheduleOperating Modes Mode no Item Expansion DescriptionExample of Reading and Clearing Alarms Alarms Mode and Sub-Mode DirectoryMode Keypad SUB-MODE Configuring Temperature ResetConfiguration Entry ExpansionRED LED Entry Expansion Configuration DLS2 Configuring Demand LimitTo 20 mA Demand Limiting TroubleshootingPage T051 Alarm and Alert CodesEWT By Control Method Cause Code Alert GENERATED?FSM LCWT155 T153T170 T173T204 T203T205 T206Electronic Components ServiceOil Charge Compressor OIL RequiredCooler Thermistor Locations Components for Part Number Plugging PlugsCooler Head Bolt Tightening Sequence Typical Tube Sheet Condenser CoilsDimension FAN Type Condenser Fan Adjustment Hz Low Noise Fan Option UnitsRefrigerant Feed Components Each circuit has Printed Circuit Board ConnectorThermistors Temperature Sensors Drop a 5K Thermistor Temperature F vs Resistance/VoltageDrop B 5K Thermistor Temperature C vs Resistance/Voltage Temp Voltage Resistance Drop 200,510 Switch Cutout CUT-IN Pressure Switch Settings Psig kPa30GTN,R Units 30GUN,R UnitsSystem Check PRE-START-UPTemperature Temperature Limits for Standard UnitsMaximum Ambient Temperature 125 START-UP and OperationNominal and Minimum Cooler Fluid Flow Rates Field WiringRefrigerant Circuit Hgbps ALMCWP Energy Management Module EMM Wiring Compressor Expansion Board CXB Accessory Wiring OPTIONS1 Options Configuration Unit Configuration SettingsDescription Status Default Units Point Description Status Default PointAppendix a CCN Tables OPTIONS2 Options ConfigurationAlarmdef Alarm Definition Table Brodefs Broadcast POC Definition Table Resetcon Temperature Reset and Demand LimitCircaan Circuit a Analog Parameters Aunit General Unit ParametersCircadio Circuit a Discrete Parameters Description Status Units Point ForceableCircbdio Circuit B Discrete Parameters Circban Circuit B Analog ParametersOptions Unit Parameters Description Status Units Point StrthourCurrmods Description Status Units Point DefaultsDescription Status Point CSM/FSM Equipment Table Type 621H, BlockLine Description Point Cooler Fluid Pressure Drop Curves 30GUN,GUR040-110 Appendix B Fluid Drop Pressure CurvesCooler Pressure Drop KEY Appendix B Fluid Drop Pressure CurvesCooler Fluid Pressure Drop Curves 30GUN,GUR130-210 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 Call for Free Catalog Service TrainingEquipment Chiller Model no START-UP Checklist for Comfortlink Chiller SystemsRemove and use for job file Preliminary Information Preliminary Equipment Check Check box if complete UnitStart-Up System Fluid Volume in Loop Type SystemUnit Start-Up Ccna Description Status Units Value CtrlCcnb 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.
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