30RAP010-060 AQUASNAP® Air-Cooled Chillers with COMFORTLINK™ Controls

Controls, Start-Up, Operation, Service, and Troubleshooting

CONTENTS

Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .2 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 Conventions Used in this Manual. . . . . . . . . . . . . . . . . . . .3 Basic Controls Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-44 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Main Base Board (MBB) . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Energy Management Module (EMM) . . . . . . . . . . . . . . . .19 Current Sensor Board (CSB) . . . . . . . . . . . . . . . . . . . . . . .19 AUX Board (AUX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Expansion Valve Board (EXV) . . . . . . . . . . . . . . . . . . . . . .19 Enable/Off/Remote Contact Switch . . . . . . . . . . . . . . . . .19 Emergency On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . .19 Board Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Control Module Communication . . . . . . . . . . . . . . . . . . . .19 Carrier Comfort Network® (CCN) Interface . . . . . . . . . .19 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

COOLER LEAVING FLUID SENSOR

COOLER ENTERING FLUID SENSOR

COMPRESSOR RETURN GAS TEMPERATURE SENSOR

OUTDOOR-AIR TEMPERATURE SENSOR (OAT)

DISCHARGE TEMPERATURE THERMISTOR (DTT)

REMOTE SPACE TEMPERATURE SENSOR OR DUAL

LEAVING WATER TEMPERATURE SENSOR

Energy Management Module . . . . . . . . . . . . . . . . . . . . . . .29

Loss-of-Cooler Flow Protection. . . . . . . . . . . . . . . . . . . . .29

Electronic Expansion Valves (EXV) . . . . . . . . . . . . . . . . .29

Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

MINUTES LEFT FOR START

MINUTES OFF TIME

LEAD/LAG DETERMINATION

CAPACITY CONTROL OVERRIDES

Head Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Operation of Machine Based on Control Method

and Cooling Set Point Selection Settings. . . . . . . . .32

Cooling Set Point Select. . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Low Sound Mode Operation . . . . . . . . . . . . . . . . . . . . . . . .34

Heating Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Service Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Optional Factory-Installed Hydronic Package. . . . . . .34

Cooler Pump Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Cooler Pump Sequence of Operation . . . . . . . . . . . . . . .35

Configuring and Operating Dual Chiller Control . . . .36

Temperature Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

DEMAND LIMIT (2-Stage Switch Controlled)

EXTERNALLY POWERED DEMAND LIMIT (4 to 20 mA Controlled)

DEMAND LIMIT (CCN Loadshed Controlled)

Cooling Set Point (4 to 20 mA). . . . . . . . . . . . . . . . . . . . . .43 Digital Scroll Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

DIGITAL SCROLL OPERATION

DIGITAL COMPRESSOR CONFIGURATION

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44,45

Page

System Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

START-UP AND OPERATION . . . . . . . . . . . . . . . . . . . . 45,46

Actual Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Check Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . . . 45

Operating Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

TEMPERATURES

LOW AMBIENT OPERATION

VOLTAGE — ALL UNITS

OPERATION SEQUENCE . . . . . . . . . . . . . . . . . . . . . .46,47 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47-63

Electronic Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

• CONTROL COMPONENTS

Electronic Expansion Valve (EXV) . . . . . . . . . . . . . . . 47

EXV Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . 47

FIELD SERVICING INSTRUCTIONS

VALVE REPLACEMENT

VALVE REASSEMBLY

Compressor Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . 49 Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

BRAZED-PLATE COOLER HEAT EXCHANGER REPLACEMENT

BRAZED-PLATE COOLER HEAT EXCHANGER

CLEANING

Oil Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Microchannel Heat Exchanger (MCHX)

Condenser Coil Maintenance and Cleaning

Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Check Refrigerant Feed Components . . . . . . . . . . . . . . 50

FILTER DRIER

MOISTURE-LIQUID INDICATOR

MINIMUM LOAD VALVE

PRESSURE RELIEF DEVICES

Check Unit Safeties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

HIGH-PRESSURE SWITCH

PRESSURE TRANSDUCERS

COOLER FREEZE-UP PROTECTION

HEATER CABLE

WINTER SHUTDOWN

Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Chilled Water Flow Switch. . . . . . . . . . . . . . . . . . . . . . . . . . 53

Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Condenser Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Motormaster® V Controller . . . . . . . . . . . . . . . . . . . . . . . . . 58

GENERAL OPERATION

CONFIGURATION

DRIVE PROGRAMMING

EPM CHIP

LOSS OF CCN COMMUNICATIONS

REPLACING DEFECTIVE MODULES

Hydronic Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63,64

Recommended Maintenance Schedule . . . . . . . . . . . . . 63

Microchannel Heat Exchanger (MCHX)

Condenser Coil Maintenance and Cleaning

Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . 64-73

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53300067-01

Printed in U.S.A.

Form 30RAP-2T

Pg 1

12-10

Replaces: 30RAP-1T

Page 1
Image 1
Carrier 30RAP010-060 specifications Controls, Start-Up, Operation, Service, and Troubleshooting, Contents

30RAP010-060 specifications

The Carrier 30RAP010-060 is a series of rooftop air conditioning units designed for effective climate control in commercial applications. Engineered with advanced technologies, these units are known for their reliability, energy efficiency, and ease of installation, making them a suitable choice for a range of settings including offices, retail spaces, and industrial facilities.

One of the standout features of the 30RAP series is its robust construction. Designed to withstand various environmental conditions, these units come equipped with a weather-resistant cabinet and a corrosion-resistant finish. This durability ensures long-term performance and reduced maintenance costs.

Energy efficiency is a significant characteristic of the Carrier 30RAP series. These units utilize advanced technologies such as a high-efficiency compressor and variable speed fans. The inclusion of economizers also contributes to energy savings by allowing the system to take advantage of outdoor air when the conditions are favorable. With high SEER (Seasonal Energy Efficiency Ratio) ratings, the 30RAP units help businesses reduce operating costs while minimizing their environmental footprint.

The 30RAP series is equipped with smart control systems that provide enhanced operational efficiency and comfort. With features such as programmable thermostats and remote access capabilities, building managers can easily monitor and adjust the system to maintain optimal indoor climate conditions. Additionally, the units are compatible with building automation systems, allowing for seamless integration into a larger HVAC network.

The installation process of the Carrier 30RAP010-060 is streamlined thanks to a compact design and lightweight construction, which simplifies the transportation and placement on rooftops. Moreover, the unit's modular components facilitate easy access for maintenance and repairs, minimizing downtime and improving overall reliability.

In summary, the Carrier 30RAP010-060 series stands out for its combination of durability, energy efficiency, and advanced control technologies. It is an ideal solution for businesses seeking reliable climate control systems that balance performance with cost-effectiveness. Whether for new installations or replacements, these rooftop units provide the necessary flexibility and efficiency needed in today’s commercial environments. With strong backing from Carrier, a leader in HVAC technology, the 30RAP series ensures lasting comfort and operational efficiency.