Table of Contents
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Carrier
International
Sdn. Bhd.
Malaysia
®
CONTENTS
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
38VTA 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.
INSTALLATION, START-UP AND
SERVICE INSTRUCTIONS
AIR-COOLED CONDENSING UNIT
1
2
3
4
4
5
5
FIG. 1
38VTA040/050/060
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.
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.
38VTA
50Hz
5
6
7
7
8
9
10
A United Technologies Company
1
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Table of Contents
Related Manuals for Carrier 38VTA050
Summarization of Contents
Safety and Handling Procedures
General Safety Considerations
General safety precautions for installation and servicing of air conditioning equipment.
Unit Receiving and Protection
Guidelines for unit handling, inspection, and protection against site damage.
Electrical Safety Warning
Crucial warning about disconnecting main power before electrical work.
Unit Dimensional Drawings
Top View Dimensions
Diagram illustrating the top view of the 38VTA unit with dimensions.
Side View Dimensions
Diagram showing the right side view of the 38VTA unit with dimensions.
Front View Dimensions
Diagram presenting the front view of the 38VTA unit with dimensions.
Technical Specifications
Operating and Refrigerant Data
Specifications for unit weight and refrigerant type and charge.
Compressor and Fan Details
Details on compressor type, oil, LRA, RLA, fan, and motor specs.
Electrical and Safety Ratings
Power source, voltage limits, MCA, and MOCP ratings.
Installation Guide
Mounting Position Selection
Guidelines for selecting an appropriate outdoor unit mounting position.
Unit Mounting Procedures
Instructions for mounting the unit on ground, wall, or roof.
Refrigerant Piping Considerations
Guidelines for refrigerant piping length, capacity reduction, and separation limits.
Piping and Electrical Connections
Filter Drier and Piping Insulation
Requirement for field installation of filter drier and suction line insulation.
Electrical Connection Requirements
Guidelines for power supply, control voltage, and unit interconnection.
Wiring Diagrams
Diagram for 40LX/050/060
Schematic wiring diagram for 38VTA units paired with 40LX040/050/060.
Diagram for 42AR/ARM/42GX
Schematic wiring diagram for 38VTA units paired with 42AR/ARM/42GX models.
Start-Up and Refrigerant Charging
Pre-Start Checks and Initial Charge
Preliminary checks, initial charge procedure, and system start-up.
Air Purging Procedure
Detailed steps for purging air and moisture from the refrigerant system.
Superheat Charging Method
Accurate system charging method using superheat and temperature measurements.
Service and Maintenance
Coil Cleaning Procedures
Instructions for cleaning the condenser coil using water or compressed air.
Lubrication and Fan Adjustment
Information on fan motor lubrication and adjusting fan depth.
General Maintenance Advice
Recommendations for continued high performance and periodic maintenance.
Superheat Charging Tables
Table 4: Superheat vs. Outdoor/Indoor Conditions
Table for determining superheat based on outdoor and indoor air temperatures.
Table 5: Required Suction Tube Temperatures
Table correlating superheat with required suction tube temperature and pressure.
Trouble-Shooting Chart
Cooling Cycle Issues
Diagnostic chart for common cooling cycle problems and their causes.
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