Carrier Complete Installation and Service Guide for 38AK and 38AKS Models
Page 1

38AK007,008,012

38AKS008,009,012 Air-Cooled Condensing Units

50/60 Hz

Installation, Start-Up and

Service Instructions

CONTENTS

Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Step 1 — Complete Pre-Installation Checks . . . . . . 1

•UNCRATE UNIT

•INSPECT SHIPMENT

•CONSIDER SYSTEM REQUIREMENTS

Step 2 — Rig and Mount the Unit . . . . . . . . . . . . . . . . . 4

•RIGGING

•COMPRESSOR MOUNTING

Step 3 — Complete Refrigerant Piping

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

•SIZE REFRIGERANT LINES

•FILTER DRIER AND MOISTURE INDICATOR

Step 4 — Make Electrical Connections . . . . . . . . . . . 6

•FIELD POWER SUPPLY

•FIELD CONTROL WIRING

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-11

Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Evacuate and Dehydrate . . . . . . . . . . . . . . . . . . . . . . . . . 9

Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Compressor Overload. . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Cycle-LOC™ Device (CLO) . . . . . . . . . . . . . . . . . . . . . . 10

Low-Pressure/Loss-of-Charge Switch (LPS). . . . . 10

High-Pressure Switch (HPS). . . . . . . . . . . . . . . . . . . . . 10

High Flow Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Refrigerant Service Ports . . . . . . . . . . . . . . . . . . . . . . . 10

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 10

Oil Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11,12

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Condenser-Fan Adjustment . . . . . . . . . . . . . . . . . . . . . 11

Capacity Control — Unit 38AKS012 Only . . . . . . . . 12

Compressor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Crankcase Heater (Except 38AK007) . . . . . . . . . . . . 12

TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . .13,14

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install or service air-conditioning equipment.

When working on air-conditioning equipment, observe pre- cautions in literature and on tags and labels attached to unit.

NOTE: Ensure voltage listed on unit data plate agrees with electrical supply to unit.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly. Consult local building codes and National Electrical Code (NEC) (U.S.A. Standard) for special installation requirements.

Before installing or servicing system, always turn off main power to system and install lockout tag on disconnect. There may be more than one disconnect switch. Electrical shock can cause personal injury.

INSTALLATION

The 38AK007, 008, and 012 units use hermetic compres- sors. The 38AKS008, 009, and 012 units use semi-hermetic compressors. See Table 1A or 1B for physical data.

Step 1 — Complete Pre-Installation Checks

UNCRATE UNIT (See Fig. 1) — Remove unit packaging except for the top skid assembly and wood bumpers, which should be left in place until after unit is rigged into place.

INSPECT SHIPMENT — File claim with shipping company if shipment is damaged or incomplete.

Fig. 1 — Model 38AK (Size 007 Shown)

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

Book

1

4

PC 111

Catalog No. 533-80003

Printed in U.S.A.

Form 38A-9SI

Pg 1

5-01

Replaces: 38A-8SI

Tab

3a

2a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Safety Considerations ContentsInstallation Unit Physical Data 50/60 Hz EnglishRefrigerant Compressor Condenser CoilPhysical Data 50/60 Hz SI Rig and Mount the Unit Weight DistributionRefrigerant Piping Sizes 60 Hz Refrigerant Piping Sizes 50 HzDimensions ft-in Liquid Line Data 60 Hz Make Electrical ConnectionsLiquid Line Data 50 Hz MAX Liquid Line Unit AllowableElectrical Data Length Insulation Size Rating C AWG Field Control Wiring Raceway 38AKS Unit ShownPreliminary Checks START-UPCooling Charging Chart 38AK008,012 38AKS008,009,012 60 Hz Low-Pressure/Loss-of-Charge Switch LPSCondenser-Fan Adjustment Fig ServiceOil Charge Tables 1A and 1B LubricationCondenser-Fan Adjustment Symptom Cause Remedy Troubleshooting GuideCLO CAPGND OFCPreliminary Information START-UP ChecklistII. Pre-Start-Up Check Voltage Imbalance III. Start-Up
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38AK012, 38AKS009, 38AKS012, 38AKS008, 38AK008 specifications

The Carrier 38AK007 is a state-of-the-art air conditioning system designed for optimal comfort, efficiency, and reliability, making it a standout choice for residential and commercial applications. This model exemplifies Carrier's commitment to innovation and energy efficiency, catering to diverse cooling needs.

One of the key features of the Carrier 38AK007 is its high energy efficiency ratio (EER), which ensures lower energy consumption and reduced utility bills. With advanced inverter technology, this unit adjusts its cooling output based on the current requirements, thereby minimizing energy waste. This makes it an environmentally friendly option, contributing to lower greenhouse gas emissions while providing effective cooling.

The Carrier 38AK007 is also equipped with a variable-speed compressor, which enhances its performance and reliability. The compressor operates at different speeds, allowing the system to maintain a consistent room temperature without the peaks and valleys associated with traditional systems. This ensures not only increased comfort but also quieter operation, making it ideal for homes, offices, and other noise-sensitive environments.

In terms of technological innovation, the Carrier 38AK007 features Smart Thermostat compatibility, allowing users to control their cooling settings remotely via a smartphone or tablet. This integration with smart home systems provides users with added convenience, enabling them to adjust temperature settings from anywhere, ensuring optimal comfort even before arriving home.

The model is built with a robust and durable construction, featuring weather-resistant materials that withstand various environmental conditions. This durability ensures a long lifespan, reducing the frequency and costs of maintenance. Additionally, the Carrier 38AK007 includes a multi-stage filtration system that effectively captures allergens and pollutants from the indoor air, improving overall air quality.

Overall, the Carrier 38AK007 is designed to meet the modern demands for energy efficiency, user control, and durability. Its combination of advanced technologies, such as inverter technology and smart home compatibility, along with high performance and air quality features, makes it an excellent choice for anyone looking to invest in a reliable cooling solution. Whether for a residential setting or a commercial space, the Carrier 38AK007 stands out as a leader in the air conditioning market.
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