Midea M-Thermal Series User Manual

 M‐ThermalSplit
20190911
Part2‐ ComponentLayout andRefrigerantCircuits
2 PipingDiagrams
2.1 OutdoorUnitPiping 
MHA‐V4W/D2N8/MHA‐V6W/D2N8/MHA‐V8W/D2N8/MHA‐V10W/D2N8
Figure2‐2.1:MHA‐V4(6,8,10)W/D2N8pipingdiagram
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Legend
1 Compressor 7 Electronicexpansionvalve
2.1 Dischargepipetemperaturesensor 8 Stopvalve(liquidside)
2.2 Outdoorambienttemperaturesensor 9 Stopvalve(gasside)
2.3 Airsideheatexchangerrefrigerantoutlettemperature sensor 10 Pressuresensor
2.4 Suctionpipetemperaturesensor 11 Separator
3 4‐wayvalve 12.1 Lowpressureswitch
4 Airsideheatexchanger 12.2 Highpressureswitch
5 Distributor 13 Capillary
6 Filter 14 Solenoidvalve
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Keycomponents:
1. Electronicexpansionvalve(EXV):
Controlsrefrigerantflowandreducesrefrigerantpressure.
2. Four‐wayvalve: 
Controlsrefrigerantflowdirection.Closedincoolingmodeandopeninheatingmode.Whenclosed,theairsideheat
exchangerfunctionsasacondenserandwatersideheatexchangerfunctionsasanevaporator;whenopen,theair
sideheatexchangerfunctionsasanevaporatorandwatersideheatexchangerfunctionasacondenser.
3. Highandlowpressureswitches: 
Regulaterefrigerantsystempressure.Whenrefrigerantsystempressurerisesabovetheupperlimitorfallsbelowthe
lowerlimit,thehighorlowpressureswitchesturnoff,stoppingthecompressor. 
4. Separator:
Separatesliquidrefrigerantfromgasrefrigeranttoprotectcompressorfromliquidhammering.
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Midea CAC Confidential

Midea M-Thermal Series Specifications

General

Brand	Midea
Model	M-Thermal Series
Category	Air Conditioner
Language	English