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

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Step 6 Ð Make Electrical Connections Ð All field wiring must comply with local code requirements. Electrical data for the complete unit and for the compressors is shown in Tables 4A and 4B. See Fig. 17 and 18 for ®eld wiring connections. A ®eld-supplied branch circuit disconnect switch that can be locked in either OPEN or OFF position must be installed.

30HK, HL UNITS Ð On all 60 Hz units, a fused (15 amp maximum), 115 v control circuit must be supplied by either a separate power source or by using a minimum 300 va trans- former. On 208/230 and 460 v units, control circuit power can be supplied by accessory transformer part no. 07EA900051. Check to be sure that installation of the 115 v control power source meets all local codes.

On all 50 Hz units, a fused (15 amp maximum), 230 v control circuit must be ®eld supplied. On 200-3-50 units, power for the control circuit can be supplied by connecting a ®eld- supplied fuse (15 amp maximum) between TB1 and TB2 for L1 overcurrent protection. On 400-3-50 units, power for the control circuit can be supplied by connecting a ®eld- supplied fuse (15 amp maximum) between TB1 and a neu- tral leg from TB2 for L1 overcurrent protection. On all units, check to be sure that installation of the 230 v control power source meets all local codes.

30HW UNITS Ð Control circuit power is 24 v and 115 v on all units, and is supplied by factory-installed control

Control Box, Controls Section Ð The control box controls section contains the following components:

·temperature controller

·control relay(s)

·control module(s)

·low-voltage control transformer(s)

·terminal block for ground current sensing accessory

Control Box, Field Control Wiring Section Ð Inside this section is a 10-terminal (30HK, HL) or 14-terminal (30HW), low-voltage, ®eld-wiring terminal strip. All low-voltage ®eld- wiring connections are made to this terminal block. Seven 3¤4-in. (19 mm) knockouts are provided for ®eld wiring in this section. Connections for chilled ¯uid ¯ow switch, chilled ¯uid pump interlock, condenser pump interlock, remote alarm output, and ground current sensor accessory are made at this location. The remote condenser relay connections are made to a separate 4-terminal (30HK, HL) or 3-terminal (30HW) ®eld wiring strip. See Fig. 17-20 for speci®c location of connections.

Unbalanced 3-Phase Supply Voltage Ð Never operate a com- pressor where a phase imbalance in the supply voltage is greater than 2%. Use the following formula to determine the percent voltage imbalance:

% Voltage Imbalance =

transformers.

ALL UNITS Ð Inside the control box are terminals for ®eld

100 x

max voltage deviation from average voltage

average voltage

power and ground (earth) wiring, as well as a terminal for a neutral wire when needed (380-3-60 and 400-3-50 units only). A ground wire must be installed with each ®eld power sup- ply. Compressor are wired standard from the factory for across- the-line start. As a factory-installed option, all 025-060 sizes are available wired for part-wind start (special order option on 30HK, HL unit).

Example: Supply voltage is 240-3-60

AB = 243 v

BC = 236 v

AC = 238 v

Refer to Tables 4A and 4B for electrical data.

Flow Switch Ð A cooler ¯ow switch is required for all units, and must be ®eld-installed. The Carrier ¯ow switch acces-

Average Voltage =

243 + 236 + 238

3

sory (part number 30HW900003), is available for this pur- pose. Flow switch wiring terminals are located in the ®eld wiring compartment of the control box. The ¯ow switch should be wired between terminals TB3-1 and TB3-7 for 30HK, HL units or between terminals TB2-7 and TB2-13 for 30HW units. The factory jumper wire between these 2 terminals must be removed for proper operation of the ¯ow switch.

Control Box, Power Section Ð The electrical power supply is brought in through the top left-hand side (30HK, HL) or

= 239 v

Determine maximum deviation from average voltage:

(AB) 243 - 239 = 4 v (BC) 239 - 236 = 3 v (AC) 239 - 238 = 1 v

Maximum deviation is 4 v.

Determine percent voltage imbalance:

right-hand side (30HW) of the control box (see Fig. 19 and

% Voltage Imbalance = 100 x

4

20). The knockout accepts up to a 3-in. (76 mm) conduit for 30HK, HL units, and a 13¤4- to 21¤2-in. (44 to 64 mm) conduit for 30HW units. Pressure-lug connections on the terminal blocks are suitable for copper, copper-clad aluminum, or alu- minum conductors.

The control box power section contains the following components:

·power terminal block

·compressor circuit breaker(s)

·compressor contactor(s)

·high-voltage transformer (30HW units only)

·control-circuit circuit breaker for 24-v circuit

·unit ON-OFF switch

·unit service light

·ground lug

·neutral terminal (380-3-60 and 400-3-50 units)

·terminal block for ground current sensing accessory

239

= 1.7%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local utility company immediately.

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Contents Contents Installation, Start-Up Service InstructionsGeneral Safety Considerations30HW Units InstallationRig and Place Unit Place the UnitSAE TOP ViewLeft Side View UnitTOP View Front View Right Side View 30HL050,060 CondenserlessRear View Left Side View 30HWB 30HWB018-040 Fluid Cooled30HWC,S Left Side View Front View30HWA,B 30HWC,S Weight Distribution AT Each Mounting HOLE, 60 HZ UnitsWeight Distribution AT Each Mounting HOLE, 50 HZ Units Location of Mounting HolesCooler HWBHWC,S CompressorRefrigerant 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 EndsCooler Pressure Drop Ð 30HK, HL Units Minimum Cooler and Condenser Flow Rates Minimum Loop VolumeUnit Size Cooler Condenser Minimum Cooler Loop VOLUME² Cooler Pressure Drop Ð 30HW UnitsCondenser Pressure Drop Ð Page LRA MTA Ð Electrical Data Ð 30HK, HWB, HWC, HWS Fluid-Cooled UnitsUnit Size ICFÐ Electrical Data Ð 30HL and HWA Condenserless Units GCS Field Accessory WiringCWP DLSTOR COMEquip GNDHPS PRIHGS SECNeut PRE-START-UPInitial Check Electric Shock HazardCheck Refrigerant Charge Deadband SettingTypical Deadband Requirements To ADD OIL START-UP and OperationOperating Limitations Check Refrigerant Feed ComponentsCrankcase Heater Pressure Relief Valve SettingsCompressor and Unit Protective Devices Check Unit SafetiesFactory 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 StepsSteps Cylinders ServiceCapacity Control Steps Ð 30HW Standard Units Unit Capacity Control OperatingThermistor Thermistor REPLACEMENT, 30HK, HL UnitsTemperature Resistance Ohms Ð Sensor Temperature F vs ResistanceÐ Sensor Temperature C vs Resistance Components for Part Number Plugging Servicing Cooler 30HK,HL onlyTightening Cooler Head Bolts Plugs and TubesChilled 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 LeaksUnits Rated MIN. Pressure Drop = Unit Start-UpFluid Entering Cooler Fluid Leaving CoolerBook 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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