Carrier 38ASB Series User Manual

CONTENTS
Safety Considerations 1 Complete Electrical Connections 5
Dimensional Drawing 2 Start-up 5
Model Identification 2 Refrigerant Charging 5 - 6
Specifications 3 Service and Maintenance 6 - 7
Installation 4 Wiring Diagram 7 - 13
Refrigerant Piping 4 Trouble-Shooting Guide 14
Piping Connections 5
SAFETY CONSIDERATIONS
Installation and servicing of air conditioning equipment can
be hazardous due to system pressure and electrical
components. Only trained and qualified service personnel
should install, repair or service air conditioning equipment.
Observe precautions in the literature, tags and labels
attached to the unit and other safety codes. Wear safety
glasses and gloves. Use quenching cloth and have fire
extinguisher available for all brazing operations.
RECEIVING
INSPECTION
Check the shipment against shipping list and remove unit
from the carton and take off protective covering. If the unit
has been damaged, file claim with Transportation Company
and notify Carrier immediately.
PROTECTION
Protect unit from damage caused by job site debris. Do
not allow dust, debris and water get into the unit.
These will damage unit’s component and unit’s
performance will be affected.
38ASB/CCARS240~600 condensing units (Fig. 1) are
shipped individually packed in carton boxes. When cartons
are individually off loaded from truck, do not roll, nor throw,
or drop the carton, to avoid damages to the content. Store
boxes upright as the symbols or the boxes indicate. Do not
stack units more than 2 high.
WARNING
Before installing or servicing system always turn off main
power supply. There may be more than one disconnect
switch. Electrical shock can cause personal injury.
Concepcion
Carrier
Air conditioning
Company
Philippines
INSTALLATION, START-UP AND
SERVICE INSTRUCTIONS
38ASB/CCARS
24
0
~
60
0
(036~060)
AIR-COOLED CONDENSING UNIT
FIG. 1
38ASB/CCARS240~600
(036~060) Export
1

Carrier 38ASB Series Specifications

General

Refrigerant	R-410A
Voltage	208/230V
Energy Efficiency Ratio (EER)	Up to 12.5
Dimensions (Indoor Unit)	Varies by model
Net Weight (Indoor Unit)	Varies by model
Airflow (Indoor Unit)	Varies by model
Cooling Capacity	18, 000 - 60, 000 BTU/h
Sound Level	As low as 56 dB
Stages	Single

Summary

Safety Considerations and Handling

Electrical Safety Warning

Always turn off main power before installation or servicing. Be aware of multiple disconnect switches for safety.

Installation Instructions

Mounting Position Selection

Refrigerant Piping Guidelines

Run tubes directly, avoid bends, suspend to prevent vibration, and seal wall openings. Longer piping reduces capacity.

Piping Connections and Insulation

Electrical Connections and Start-Up

Complete Electrical Connections

Ensure control voltage is 230V. Provide a fused disconnect switch. Route power wires correctly and ensure unit is grounded.

Start-Up Procedures

Refrigerant Charging and System Checks

Refrigerant Charging Method

Charge by superheat method. Operate unit for 15 mins, measure pressures and temperatures, and adjust charge as per tables.

Superheat Charging Tables

Suction Tube Temperature Guide

Trouble-Shooting Guide

Cooling Cycle Troubleshooting

Flowchart to diagnose issues like no cooling, insufficient cooling, or compressor cycling based on observed symptoms.