Daikin DCH072 SERIES User Manual

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.

Daikin DCH072 SERIES Specifications

General

Category	Heat Pump
Cooling Capacity	7.2 kW
Refrigerant	R410A
Weight (Indoor Unit)	12 kg
Power Supply	220-240V, 50Hz
Noise Level (Outdoor Unit)	52 dB
Series	DCH072 SERIES

Summary

PRODUCT IDENTIFICATION

PRODUCT DESIGN

Unit Location and Installation Requirements

Electrical Wiring Guidelines

Safety and installation standards for electrical wiring connections.

Low Voltage Control Wiring

SYSTEM OPERATION

Startup Procedures and Contractor Responsibilities

Key startup steps and essential tasks for installing contractors.

Heat Pump Operation and Defrost Control

SCHEDULED MAINTENANCE

Routine Maintenance Tasks

SERVICING

Cooling Analysis Chart

Troubleshooting guide for cooling system complaints, causes, and remedies.

Electrical System Diagnostics

Procedures for testing voltage, wiring, transformer, and control circuits.

Pressure Controls and Refrigerant Checks

Motor and Capacitor Testing

Reversing Valve and Defrost Control

System Evacuation and Charging

Procedures for evacuating the system and charging refrigerant.

Superheat and Overfeeding Diagnostics

Diagnosing overfeeding issues and checking system superheat.

Restriction Checks and Compressor Burnout

Procedures for checking restrictions, refrigerant overcharge, and compressor burnout.

External Static Pressure and Belt Tension

Temperature Rise and Fan Checks

UNIT WIRING DIAGRAMS