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Daikin DCH150 Series User Manual

Daikin DCH150 Series
139 pages
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This manual is to be used by qualified, professionally trained HVAC
technicians only. Daikin does not assume any responsibility for property
damage or personal injury due to improper service procedures or services
performed by an unqualified person.
RSDX6412006r1
November 2016
DCC Cooling/DCH Heat Pumps
Commercial Package Units
with R-410A Refrigerant
4 - 6 Tons & Accessories
Service Instructions
Copyright © 2015 - 2016
Not for installation in the United States or Canada. This unit is for export only.

Table of Contents

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Daikin DCH150 Series Specifications

General IconGeneral
SeriesDCH150
RefrigerantR410A
Operating Temperature Range (Cooling)-5°C to 46°C
TypeHeat Pump
Heating Capacity16.0 kW
Cooling Capacity14.0 kW
Power Supply3 Phase, 380-415V, 50Hz

Summary

Important Information

Safe Refrigerant Handling

Guidelines for safe handling of refrigerants and related hazards.

Product Design

Electrical Wiring Safety and Guidelines

High voltage safety precautions and general wiring guidelines.

Servicing

Cooling Analysis Chart

A chart to diagnose cooling system issues based on symptoms and causes.

Checking Voltage

Procedure for measuring supply voltage and identifying voltage imbalances.

Checking Pressure Controls

Testing procedures for loss of charge, high, and low pressure controls.

Checking Capacitors

Methods for testing run and start capacitors using resistance and capacitance checks.

Checking Motors and Windings

Procedures for testing PSC and EEM motor windings for continuity and grounding.

Checking Compressor Windings and Ground Test

Testing compressor windings for continuity and performing ground tests.

Troubleshooting

Heat Pump Heating Cycle Issues

Common causes for unsatisfactory operation of heat pumps on the heating cycle.

Refrigeration Repair Practices and Leak Testing

Guidelines for safe refrigerant handling, brazing, and leak detection.

Evacuation and Charging Procedures

Detailed steps for system evacuation and refrigerant charging.

Compressor Efficiency and Superheat

Methods for checking compressor efficiency and system superheat.

Compressor Burnout and External Static Pressure

Steps for dealing with compressor burnout and checking external static pressure.

Unit Wiring Diagrams

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