Service manual
Table Of Contents
- DNG DC Inverter Series
- LIST OF EFFECTIVE PAGES
- TABLE OF CONTENTS
- INTRODUCTION
- PRODUCT DATA SHEET
- RATING CONDITIONS
- OUTLINE DIMENSIONS
- PERFORMANCE DATA & PRESSURE CURVES
- AIRFLOW CURVES
- SOUND LEVEL CHARACTERISTICS
- ELECTRICAL DATA
- WIRING DIAGRAMS
- REFRIGERATION DIAGRAMS
- TUBING CONNECTIONS
- CONTROL SYSTEM
- TROUBLESHOOTING
- EXPLODED VIEWS AND SPARE PARTS LISTS
- APPENDIX A

1-3
INTRODUCTION
SM DNGDCI 2-E.1 GB
1.7 Outdoor Unit
The DNG DCI INV outdoor units can be installed as floor or wall mounted units by using
a wall supporting bracket. The metal sheets are protected by anti- corrosion paint work
allowing long life resistance. All outdoor units are pre-charged. For further information,
please refer to the Product Data Sheet, Chapter 2.
It includes:
• Compressor mounted in a soundproofed compartment :
Scroll – for DNG 50, 60, 100, 125.
Twin Rotary – for DNG 72, 80.
• Improved 3- blades axial fans for noise reduction.
• Fan grill air outlet.
• Service valves ”flare” type connection.
• Service ports for high/ low pressure measurement.
• Advanced controller.
• Outdoor coil with hydrophilic louver fins.
• Interconnecting wiring terminal blocks.
1.8 Tubing Connections
Flare type-interconnecting tubing to be produced on site.
All the units from 7KW and up can be installed with 50-meter tubing length and 25-meter
height difference without oil traps.
All the units from 10KW and up can be installed with 70-meter tubing length and 30-
meter height difference without oil traps.
For further details, please refer to the Installation Manual, Charter 9.
1.9 Accessories
RCW Wall Mounted Remote Control
The RCW remote control is mounted on the wall, and controls the unit either as an
infrared remote control or as a wired controller. The wired controller can control up to 10
Indoor units with the same program settings and adjustments.
For further details, please refer to the Technical Service Manual, Optional Accessories,
Chapter 18.
1.10 Inbox Documentation
Each unit includes its own installation and operation manuals.
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