PACD011001C2
Table of Contents i
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1.Introduction...........................................................................................xiii
1.1Safety Cautions......................................................................................xiii
1.2Survey of Possible UM Outdoor Units...................................................xvii
1.3Survey of Possible UM Indoor Units.....................................................xviii
1.4Nomenclature........................................................................................xix
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1.Outline of System....................................................................................4
1.1MX1 Series...............................................................................................4
1.2Changes in “MX1” Series Functions / Parts.............................................5
1.3ME1 Series...............................................................................................7
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1.Function................................................................................................10
1.1Outdoor Unit Refrigerant System Diagram.............................................10
1.2List of Safety Devices and Functional Parts Setting Values...................18
1.3Flow of Refrigerant in Each Operation Mode (ME1 Series)...................20
1.4Outline of Control (ME1 Series).............................................................25
1.5Safety for Restart...................................................................................27
1.6Equalized Oil Level Operation
(Equalized Oil Level between Twin Compressors).................................30
1.7Oil Return Operation..............................................................................31
1.8Defrost....................................................................................................33
1.9Pressure Equalization Control (ME1 Series)..........................................36
1.10Frequency Limit Control by Pressure Equalization (ME1 Series)..........37
1.11HR Changeover Control (ME1 Series)...................................................38
1.12Pump Down Residual Operation............................................................39
1.13Step Down / Safety Control
→
Standby (Forced Thermostat OFF)
→
Stop Due to Malfunction....................................................................42
1.14Control During Low Outdoor Air Temperature Cooling..........................45
1.15Low Noise Control..................................................................................47
1.16Demand Control.....................................................................................48
1.17Compressor Capacity Control................................................................49
1.18Te / Tc Setting........................................................................................50
1.19Gas Depletion Alarm..............................................................................51
1.20Drain Pump Control................................................................................52