Service manual

INTRODUCTION
1. INTRODUCTION
1.1 General
The Trio/Quattro DCI Multi series is a full line multi-tubing system with 3 to 4 connected indoor
units. The multi-split inverter is a high level technology product for residential and commercial
application offering comfort, low noise operation and energy saving.
1.2 Main Features
1.2.1 High Technology
• Sine wave form in both OFAN and Compressor drives.
• DC-BL-SL (Sensor less) Inverter Compressor drive.
• DC-BL Inverter OFAN drive in the controller.
• DSP Power (Digital Signal Processing) – High speed calculation for accurate Sine wave
form vector control.
• Smart PFC control.
• Fuzzy Logic Control
1.2.2 System Features
• R410A
• High COP (“A” class energy rating)
• Low noise levels
• IAQ (Indoor Air Quality) features (WNG series)
• Lego concept - Products line of wall mounted, floor/ceiling, cassette, ducted with capacity
models of 2.5, 3.5 and 5.0 kW
.
• Networking connectivity.
• Pre-charged system.
• Dry contact inputs:
o STBY
o Night (in cool mode only)
o Power Shedding
o Forced Mode operation
• Dry contact output – Alarm.
• Ready for Base heater connection and logic.
• Cooling operation at outdoor temperature down to -10
0
C.
• Heating operation at outdoor temperature down to -15
0
C.
• HMI Display Board (Human-Machine Interface) – 3x7-segment display shows both indoor
and outdoor diagnostics and setting up features.
• Monitoring softwear(PC port).
• EEV (Electronic Expansion Valve) for each indoor unit.
1.3 Tubing Connections
Flare type interconnecting tubing to be produced on site.
.
1.4 Inbox Documentation
Each indoor unit is supplied with its own installation and operation manuals.
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