Carrier 30HW018-040, 30HL050 Installed Coupling Fastening Grooved Pipe Ends, Cooler Description

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30HWB CONDENSER Ð When facing the back of the unit, the condenser is the uninsulated heat exchanger located on the right-hand side. The water connections are on the right- hand side of the heat exchanger with the LIQUID-IN con- nection at the bottom, and the LIQUID-OUT connection at the top.

A strainer with a minimum of 20 mesh must be installed ahead of the condenser water inlet to prevent debris from clogging or damaging the heat exchanger.

To install the grooved end coupling (see Fig. 15):

1.Lubricate the gasket lips and stretch the gasket over the end of the pipe. Avoid twisting the gasket when installing.

2.Bring the pipe and heat exchanger coupling ends to- gether into alignment. Slide the gasket so that it is cen- tered over the ends. Apply a light ®lm of lubricant to the gasket, or to the gasket recess of the coupling housing. Avoid twisting the gasket during installation.

3.Seat the coupling halves over the gasket and install the nuts and bolts. Tighten the nuts equally on both sides.

4.Alternately tighten the nuts with a wrench to draw the coupling halves together uniformly. The joint is now complete.

30HK, HWB, HWC, HWS UNITS Ð In order to minimize the water pressure drop in the system, use as few bends as possible in the ®eld water piping, and run the lines as short as possible. Size the water lines according to the available pump pressure (not necessarily the connection size), espe- cially on cooling tower applications. See Carrier System De- sign Manual, Part 3, Piping Design. See Fig. 16 for condenser pressure drops.

Set water regulating valve to maintain design head pres- sure. Do not adjust to compensate for high head pressures caused by fouled condenser tubes, excess refrigerant, or the presence of noncondensables. Due to changes in water temperature, it may be necessary to adjust the valve season- ally. After adjusting for design head pressure, shut unit down. The water regulating valve should shut off the ¯ow of water in a few minutes. If it does not, raise head pressure setting. Make sure that the capillary tube from each water regulating valve is connected to the proper condenser purge valve.

Fig. 15 Ð Installed Coupling Fastening Grooved

Pipe Ends

Provide a means for draining the system in the winter (if not used) and for maintenance.

Accessory steel manifold packages for inlet and outlet con- denser water are available for 30HK units. Each manifold is furnished in 2 sections, to be ®eld welded as shown in Fig. 4. Manifolds should not be used where regulating valves are required because separate valves must be used on each condenser circuit.

Retighten all condenser head bolts before ®lling system with water. Torque bolts to a maximum of 40 to 45 ft-lb.

Water leaving the condenser is under pressure and should not be connected directly into sewer lines. Check local codes. A 3/8-in. drain plug is located in the head at each condenser end.

Refer to Pressure Relief Devices and Discharge Line Check Valve sections on page 28, concerning piping connections for these components.

COOLER DESCRIPTION

30HK, HL Units Ð The cooler is a direct-expansion type with removable heads and is partitioned for multi-pass re- frigerant ¯ow. Fluid ¯ow across the tube bundle is directed by baffles designed for minimum ¯uid-pressure drop. The tubes have integral internal ®ns for maximum heat transfer efficiency.

Viewed from unit front, the return chilled ¯uid enters at the left end of the cooler and leaves at the right end. The sensing bulb for the factory-supplied ¯uid temperature con- troller is in the leaving-¯uid nozzle; the leaving-¯uid tem- perature being the control point.

The cooler is insulated with a ¯exible, closed-cell plastic foam insulation of suitable thickness. Fluid vapor cannot pen- etrate the cellular structure to condense either within cells or on the cooler shell. Thus, the insulation itself is a vapor bar- rier. Because of the toughness of insulation, a protective sheet metal covering is not necessary.

Special modi®cation may be necessary for brine chillers. Contact your Carrier representative for details. For calcium or sodium chloride brines, it is important that the proper in- hibitors be carefully selected for protection of the copper tubes. Refer to the publications of the Calcium Institute or the Mutual Chemical Division of Allied Chemical Corporation for information on corrosion control for calcium or sodium chloride systems.

30HW Units Ð All 30HW units use a brazed-plate heat- exchanger type cooler. The heat exchanger is constructed es- sentially the same as the brazed-plate condenser used on 30HWB units. See 30HWB Condenser Description section on page 13 for more details. Similar to the condenser, the cooler can only be chemically cleaned.

COOLER PIPING Ð Plan cooler ¯uid piping for minimum number of changes in elevation, and for the fewest number of bends as possible. Install manual or automatic vent valve at high points in the line. Maintain system pressure by using a pressure tank or a combination or relief and reducing valves.

A strainer with a minimum of 20 mesh must be installed ahead of the cooler ¯uid inlet to prevent debris from clog- ging or damaging the heat exchanger.

See Carrier System Design Manual, Part 3, Piping Design, for chilled ¯uid piping details.

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Contents Installation, Start-Up Service Instructions ContentsSafety Considerations GeneralInstallation Rig and Place UnitPlace the Unit 30HW UnitsTOP View Left Side ViewUnit SAE30HL050,060 Condenserless TOP View Front View Right Side ViewRear View Left Side View 30HWB018-040 Fluid Cooled 30HWBLeft Side View Front View 30HWC,SWeight Distribution AT Each Mounting HOLE, 60 HZ Units Weight Distribution AT Each Mounting HOLE, 50 HZ UnitsLocation of Mounting Holes 30HWA,B 30HWC,SHWB HWC,SCompressor 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 Installed Coupling Fastening Grooved Pipe Ends Cooler DescriptionMinimum Cooler and Condenser Flow Rates Minimum Loop Volume Unit Size Cooler Condenser Minimum Cooler Loop VOLUME²Cooler Pressure Drop Ð 30HW Units Cooler Pressure Drop Ð 30HK, HL UnitsCondenser Pressure Drop Ð Page Ð Electrical Data Ð 30HK, HWB, HWC, HWS Fluid-Cooled Units Unit SizeICF LRA MTAÐ Electrical Data Ð 30HL and HWA Condenserless Units Field Accessory Wiring CWPDLS GCSCOM EquipGND TORPRI HGSSEC HPSPRE-START-UP Initial CheckElectric Shock Hazard NeutCheck Refrigerant Charge Deadband SettingTypical Deadband Requirements START-UP and Operation Operating LimitationsCheck Refrigerant Feed Components To ADD OILPressure Relief Valve Settings Compressor and Unit Protective DevicesCheck Unit Safeties Crankcase HeaterFactory Settings, High-Pressure Switch Fixed Factory Settings, Low-Pressure Switch FixedCapacity Control and Operating Sequence Ð Unit OperationFREEZE-UP Protection Transfer Switch Compressor Unit Control No Position Steps Capacity Control Steps Ð 30HK, HL Standard UnitsService Capacity Control Steps Ð 30HW Standard UnitsUnit Capacity Control Operating Steps CylindersThermistor REPLACEMENT, 30HK, HL Units ThermistorÐ Sensor Temperature F vs Resistance Temperature Resistance OhmsÐ Sensor Temperature C vs Resistance Servicing Cooler 30HK,HL only Tightening Cooler Head BoltsPlugs and Tubes Components for Part Number PluggingChilled Fluid PROOF-OF-FLOW Switches Open TroubleshootingHead Bolt Tightening Sequence Troubleshooting Symptoms Cause RemedyCompressor Service Training Call for Free CatalogRemove and use for job le Preliminary Information START-UP Checklist for Chiller SystemsPreliminary Equipment Check YES or no LOCATE, REPAIR, and Report ANY R-22 Leaks Voltage ImbalanceUnit Start-Up Fluid Entering CoolerFluid 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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