2
8.3.4. -018(208/230V) .................................... 19
8.3.5. -024(208/230V) .................................... 19
8.4. Outdoor Unit Dimensions...................................... 20
8.5. OutdoorUnitClearances ...................................... 21
8.5.1. SingleUnits ............................................ 21
8.5.2. Multiple Units .......................................... 21
9. Refrigeration Pipe Work ..........................22
9.1. Single-ZoneRefrigerantCycleDiagram ............... 22
9.2. Single-ZonePipingLimitations ............................. 22
10. Outdoor Unit Connections and Line
Set Usage .................................................23
10.1. PipeLength........................................................... 23
10.2. Torque Requirements ........................................... 23
11. Power and Communication Wiring for
Systems ...................................................24
12. Outdoor Unit Diagrams ...........................24
13. Installation Requirements ....................... 25
13.1. GasLeakCheckwithSoapWater: ....................... 25
13.2. AirandMoisture.................................................... 25
13.3. AirPurgingusingaVacuumPump ....................... 25
13.4. AddingRefrigerantifPipeLengthExceeds
ChargeLessPipeLength ..................................... 25
13.5. AddRefrigerantafterLong-TermSystem
Operation .............................................................. 25
13.6. ServicingIndoorUnitRefrigerationCircuit............ 26
13.6.1. CollectingRefrigerantintoOutdoorUnit 26
13.6.2. AirPurgingwithVacuumPump .............. 26
13.7. EvacuationafterServicingtheOutdoorUnit
RefrigerationCircuit .............................................. 26
13.7.1. EvacuationoftheComplete
RefrigerationCircuit,Indoorand
Outdoor Unit ........................................... 26
13.7.2. RefrigerantCharging .............................. 27
14. Electronic Function .................................27
14.1. Abbreviation .......................................................... 27
14.2. ElectricControlWorkingEnvironment. ................. 27
15. Adding Refrigerant - Single-Zone
Systems ....................................................27
16. Single-Zone Outdoor Unit LED
Locations .................................................. 27
17. SpecicationsandOperations ...............28
17.1. CoolingChart ........................................................ 29
17.2. CapacityRequestCalculations ............................. 29
17.3. OutdoorFanControl ............................................. 30
17.3.1. CoolingMode ......................................... 30
18. Indoor and Outdoor Unit Disassembly ..32
18.1. IndoorUnit(AllModels) ........................................ 32
18.1.1. FrontPanel ............................................. 32
18.1.2. ElectricalParts ....................................... 34
18.1.3. Evaporator .............................................. 36
18.1.4. FanMotorandFan ................................. 37
18.1.5. Step Motor .............................................. 37
18.1.6. DrainHose ............................................. 37
18.2. Outdoor Unit ......................................................... 38
18.2.1. PanelPlate(MWCA009S4,
MWCA012S4andMWCA018S4)........... 38
18.2.2. PanelPlate(MWCA024S4) .................... 39
18.2.3. ElectronicComponents(MWCA009S4
andMWCA012S4) ................................. 40
18.2.4. ElectronicComponents(MWCA018S4) . 40
18.2.5. ElectronicComponents(MWCA024S4) . 40
18.2.6. FanDisassembly(MWCA009S4and
MWCA012S4) ........................................ 41
18.2.7. FanDisassembly(MWCA018S4) ........... 42
18.2.8. FanDisassembly(MWCA024S4) ........... 42
18.2.9. SoundBlanket ........................................ 43
18.2.10. Compressor ............................................ 43
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