Carrier 30HL050, 30HW018-040, 060 Pre-Start-Up, Initial Check, Electric Shock Hazard, Neut

Page 25

 

 

 

LEGEND

 

 

C

Ð Contactor

GCS

Ð Ground Current Sensor

SW

Ð Switch

CB

Ð Circuit Breaker

GND

Ð Ground

TB

Ð Terminal Block

CM

Ð Control Module

NC

Ð Normally Closed

TDR

Ð Time Delay Relay

COM

Ð Common

NEUT

Ð Neutral

THERM Ð Termistor

CR

Ð Control Relay

NO

Ð Normally Open

TRAN

Ð Transformer

Fig. 20 Ð 30HW Control Box Components Label

PRE-START-UP

IMPORTANT: Before beginning Start-Up, complete Start-Up Checklist on pages CL-1 to CL-4. This check- list assures proper start-up of a unit, and provides a record of unit condition, application requirements, sys- tem information, and operation at initial start-up.

ELECTRIC SHOCK HAZARD

Open all disconnects before servicing this equipment. There may be more than one disconnect.

Initial Check

IMPORTANT: Electrical power source must agree with unit nameplate rating. Do not start the chiller, even momentarily, until the following checks have been completed.

1.Check all auxiliary components, such as cooling tower (if used), chilled liquid and condenser water pumps, air- handling equipment, or other equipment to which the chiller supplies liquid. Consult manufacturer's instructions.

2.Be sure ¯ow switch is properly installed and set. See instructions packaged with ¯ow switch accessory.

3.Set the temperature controller deadband as speci®ed in Tables 5 and 6. Set point should be at the desired cooler leaving ¯uid temperature. Refer to Chilled Fluid Tem- perature Controller section on page 29 for additional dead- band setting information.

4.Backseat (open) compressor suction and discharge shut- off valves. Crack open valves (one turn in) to allow some pressure to each test gage (if installed).

5.Backseat (open) liquid line shutoff valve(s).

6.Open valve to capillaries from ¯uid regulating valve (when used).

7.Fill chilled ¯uid liquid circuit with clean water or other noncorrosive ¯uid to be cooled. Bleed all air out of the high points of the system. Set ¯ow rate according to job requirements. See Table 3. If the chilled water is to be maintained at a temperature below 40 F (4.4 C), a brine of sufficient concentration must be used to prevent freeze-up at anticipated suction temperatures.

8.Open supply valve (or ®ll cooling tower, if used) for condenser water.

9.Check tightness of all electrical connections.

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Contents Contents Installation, Start-Up Service InstructionsGeneral Safety ConsiderationsRig and Place Unit InstallationPlace the Unit 30HW UnitsLeft Side View TOP ViewUnit SAETOP View Front View Right Side View 30HL050,060 CondenserlessRear View Left Side View 30HWB 30HWB018-040 Fluid Cooled30HWC,S Left Side View Front ViewWeight Distribution AT Each Mounting HOLE, 50 HZ Units Weight Distribution AT Each Mounting HOLE, 60 HZ UnitsLocation of Mounting Holes 30HWA,B 30HWC,SHWC,S HWBCompressor CoolerRefrigerant Ð kg Ð Physical Data 30HL, HWA Condenserless Units Ð SI Ð Physical Data 30HL, HWA Condenserless Units Ð EnglishCondenser Connections Factory-Installed Unit Wheels Typical Piping with Fluid-Cooled 30HWB Unit Shown Page Cooler Description Installed Coupling Fastening Grooved Pipe EndsUnit Size Cooler Condenser Minimum Cooler Loop VOLUME² Minimum Cooler and Condenser Flow Rates Minimum Loop VolumeCooler Pressure Drop Ð 30HW Units Cooler Pressure Drop Ð 30HK, HL UnitsCondenser Pressure Drop Ð Page Unit Size Ð Electrical Data Ð 30HK, HWB, HWC, HWS Fluid-Cooled UnitsICF LRA MTAÐ Electrical Data Ð 30HL and HWA Condenserless Units CWP Field Accessory WiringDLS GCSEquip COMGND TORHGS PRISEC HPSInitial Check PRE-START-UPElectric Shock Hazard NeutCheck Refrigerant Charge Deadband SettingTypical Deadband Requirements Operating Limitations START-UP and OperationCheck Refrigerant Feed Components To ADD OILCompressor and Unit Protective Devices Pressure Relief Valve SettingsCheck Unit Safeties Crankcase HeaterFactory Settings, Low-Pressure Switch Fixed Factory Settings, High-Pressure Switch FixedCapacity Control and Operating Sequence Ð Unit OperationFREEZE-UP Protection Capacity Control Steps Ð 30HK, HL Standard Units Transfer Switch Compressor Unit Control No Position StepsCapacity Control Steps Ð 30HW Standard Units ServiceUnit Capacity Control Operating Steps CylindersThermistor Thermistor REPLACEMENT, 30HK, HL UnitsTemperature Resistance Ohms Ð Sensor Temperature F vs ResistanceÐ Sensor Temperature C vs Resistance Tightening Cooler Head Bolts Servicing Cooler 30HK,HL onlyPlugs and Tubes Components for Part Number PluggingChilled Fluid PROOF-OF-FLOW Switches Open TroubleshootingHead Bolt Tightening Sequence Symptoms Cause Remedy TroubleshootingCompressor Call for Free Catalog Service TrainingRemove and use for job le Preliminary Information START-UP Checklist for Chiller SystemsPreliminary Equipment Check YES or no Voltage Imbalance LOCATE, REPAIR, and Report ANY R-22 LeaksFluid Entering Cooler Unit Start-UpFluid Leaving Cooler Units Rated MIN. Pressure Drop =Book Catalog No Form 30H-10SI Pg CL-4 11-98

30HK040-060, 060, 30HL050, 30HW018-040 specifications

The Carrier 30HW018-040, 30HL050, 060, and 30HK040-060 series represents a range of advanced rooftop units designed to meet the diverse heating and cooling needs of commercial buildings. Renowned for their efficiency and performance, these units incorporate cutting-edge technologies to improve operational effectiveness and reduce energy consumption.

One of the standout features of the Carrier 30HW series is its high-efficiency scroll compressors, which are engineered to provide exceptional cooling capacity while minimizing energy usage. These compressors operate quietly and ensure smooth performance across varying loads. Additionally, the units utilize advanced microprocessor controls that enhance system efficiency by enabling precise temperature regulation and optimizing energy consumption based on real-time weather conditions.

Another important aspect of the 30HL series is its ability to provide reliable heating and cooling capabilities even in extreme weather conditions. With robust heat exchangers and a range of variable-speed fans, these units can efficiently circulate air while maintaining optimal indoor comfort levels. Variable-speed technology not only enhances comfort but also improves energy savings, as the system can adjust its output based on occupancy and external temperature fluctuations.

The 30HK series, specifically designed for high-performance applications, features enhanced filtration systems which improve indoor air quality. These systems are capable of accommodating various filter types, ensuring that airborne contaminants are effectively captured. This makes the 30HK a suitable choice for environments where air quality is a priority, such as schools, hospitals, and commercial offices.

Moreover, all units in the 30HW, 30HL, and 30HK series are designed with ease of maintenance in mind. Removable panels and easy access points allow for quick servicing and reduces downtime. The compact design also ensures that installation is straightforward, making them a preferred choice for many contractors.

In summary, Carrier's 30HW018-040, 30HL050, 060, and 30HK040-060 series are integral solutions in the HVAC market, combining energy efficiency, advanced controls, and superior air quality features. These rooftop units are tailored for commercial applications, providing reliable heating and cooling solutions while prioritizing comfort and sustainability. Through continuous innovation, Carrier remains at the forefront of HVAC technology, ensuring that their products meet the evolving demands of the industry.
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