Carrier Installation and Service Guide for the 38AQS008 Heat Pump
Page 1

38AQS008 Air-Cooled Split System Heat Pump 50/60 Hz

Installation, Start-Up and

Service Instructions

CONTENTS

Page

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 Step 1 — Complete Pre-Installation Checks . . 1

•UNCRATE UNIT

•INSPECT SHIPMENT

•CONSIDER SYSTEM REQUIREMENTS

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

•RIGGING

•MOUNTING

•COMPRESSOR MOUNTING

Step 3 — Complete Refrigerant Piping

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

•SIZE REFRIGERANT LINES

•FILTER DRIER AND MOISTURE INDICATOR

•LIQUID LINE SOLENOID VALVE

•SAFETY RELIEF

•SUCTION PIPING AT INDOOR COIL AND TXV SENSING BULB LOCATION

Step 4 — Make Electrical Connections . . . . . . . 3

•FIELD POWER SUPPLY

•ACCESSORY ELECTRIC HEAT

•FIELD CONTROL WIRING

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10,11

Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . 10

Evacuate and Dehydrate . . . . . . . . . . . . . . . . . . . 10

Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . 10

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

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

Checking Cooling and Heating Control

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13

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

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

Outdoor-Fan Adjustment . . . . . . . . . . . . . . . . . . . 11

Compressor Removal . . . . . . . . . . . . . . . . . . . . . . 11

Cooling Mode Operation . . . . . . . . . . . . . . . . . . . 12

Heating Mode Operation . . . . . . . . . . . . . . . . . . . 12

TROUBLESHOOTING CHART . . . . . . . . . . . . . . 14,15

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

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. 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.

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

Before installing or servicing system, always turn off main power to system. There may be more than one dis- connect switch. Electrical shock can cause personal injury.

INSTALLATION

The 38AQS008 unit uses a semi-hermetic compressor. See Tables 1A and 1B for physical data.

The 38AQS008 is approved by Carrier for use only with 40RMQ008 fan cooling units. Use only approved far coils.

The 38AQS008 (60 Hz) is Underwriters’ Laboratories (UL) and Canadian Underwriters’ Laboratories (CUL) approved for use with the 40RMQ008 fan coil only.

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 com- pany if shipment is damaged or incomplete.

Fig. 1 — 38AQS008 Unit

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. 533-887

Printed in U.S.A.

Form 38AQS-4SI

Pg 1

6-95

Replaces: 38AQS-3SI

Tab

5a

5a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Safety Considerations ContentsInstallation Complete Refrigerant Piping Connec Rig and Mount the UnitPhysical Data English Physical Data SIRefrigerant Piping Sizes Make Electrical ConnectionsLiquid Line Data Dimensions Compressor Mounting Rigging LabelTypical Piping Diagram, 38AQS/40RMQ RLA LRA FLA Electrical DataMAX Fuse or FLA LRA Hacr Brkr Amps Accessory Electric Heater Data 50 Hz Accessory Electric Heater Data 60 HzUnit Heater Heater MCA Mocp 40RMQ AmpsFusible Plug Locations → Control Wiring ConnectionsPreliminary Checks START-UPOutdoor-Fan Adjustment Fig ServiceChecking Cooling and Heating Control Opera LubricationHeating Mode Operation See Fig Cooling Mode Operation See FigCooling Mode Operation Troubleshooting CHART, Cooling Cycle Troubleshooting CHART, Heating Cycle Page Page Copyright 1995 Carrier Corporation Preliminary Information START-UP ChecklistPre-Start-Up Start-Up

38AQS008 specifications

The Carrier 38AQS008 is a high-performance air conditioning unit that stands out for its innovative technology, design, and efficiency. As part of Carrier's extensive line of HVAC solutions, this model is engineered to deliver optimal indoor comfort while minimizing energy consumption.

One of the main features of the Carrier 38AQS008 is its high SEER rating, which signifies exceptional energy efficiency. This rating ensures that consumers can enjoy lower utility bills and reduced environmental impact, making it an ideal choice for eco-conscious homeowners. The unit's advanced cooling technologies work seamlessly to maintain precise temperature control, ensuring a pleasant environment regardless of the season.

The Carrier 38AQS008 employs a variable-speed compressor, which allows the system to adjust its operation based on the cooling demand. Unlike traditional fixed-speed units that operate at a single speed, the variable-speed technology leads to quieter operation, increased efficiency, and improved dehumidification. As the unit operates at lower speeds, it can effectively reduce energy usage when full cooling capacity is not required, further enhancing overall efficiency.

In addition to its potent cooling capabilities, the Carrier 38AQS008 incorporates a robust filtration system that captures airborne particles, dust, and allergens. This feature not only improves indoor air quality but also ensures that the system operates efficiently by maintaining clean coils. Users can enjoy a healthier living space while also prolonging the lifespan of the air conditioning unit.

Another characteristic of the Carrier 38AQS008 is its durable construction, designed to withstand harsh weather conditions. The unit is equipped with a galvanized steel cabinet that offers corrosion resistance, and its compact design allows for easy installation and integration into various home environments.

Moreover, the Carrier 38AQS008 is compatible with smart home technology, allowing users to control their air conditioning system remotely. This feature enhances convenience and efficiency, as homeowners can adjust settings based on their daily routines and preferences.

Meeting rigorous energy performance standards, the Carrier 38AQS008 exemplifies Carrier's commitment to sustainability and customer satisfaction. With its combination of advanced features, reliable performance, and user-friendly technology, this air conditioning unit is a superior choice for those seeking a dependable and efficient cooling solution.
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