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4.  MWMA and MWMB Wall Mounted Indoor Units
4.1.  ModelNumberIdentication
M  WM  A  012  S  4 - 1  P
Unit Type 
WM=Wall-MountedNon-DuctedUnit
Series Type 
M = Mini-Split
Voltage 
L=115V-1phase-60hz 
P=208/230V-1phase-60hz
CoolingEfciency 
S=StandardEfciency
Major Design Sequence 
A=1stGeneration 
B=2ndGeneration
Nominal Cooling Capacity 
009 = .75 tons 
012 = 1 tons 
018 = 1.5 tons 
024=2tons 
030 = 2.5 tons
Refrigerant Type 
4=R-410A
Minor Design Sequence 
1=1stRevision 
2=2ndRevision
4.2.  IndoorUnitSpecications(009-012Ton)Units
Model No. MWMA009S4-*L 
MWMB009S4-*L
MWMA009S4-*P 
MWMB009S4-*P
MWMA012S4-*L 
MWMB012S4-*L
MWMA012S4-*P 
MWMB012S4-*P
NominalTons 0.75 0.75 1 1
PowerSupply-60hz-1phase 115V 208/230V 115V 208/230V
Ratedloadamps 0.25 0.06 0.25 0.06
Output(W) 20 20 20 20
RoomTemperature 
Range(°F)
Cooling 62 - 90 62 - 90 62 - 90 62 - 90
Heating 32 - 86 32 - 86 32 -86 32 - 86
AirVolume-cfm(High/Medium/Low) 365/265/195 370/270/195 365/265/195 370/275/200
SoundData(dBA)-Low/Medium/High 24/33/42 26.5/33.4/41.7 24/33/42 28.6/35.8/45.1
PipingConnections-Liquid/Gas-o.d.-are-in. 1/4/3/8 1/4/3/8 1/4/1/2 1/4/1/2
Drainconnectiono.d.-in. 1 1 1 1
Net/Shippingweights-lbs. 20 / 26 20 / 26 20 / 26 20 / 27
4.3.  IndoorUnitSpecications(018-030Ton)Units
Model No. MWMA018S4-*P 
MWMB018S4-*P
MWMA024S4-*P 
MWMB024S4-*P
MWMA030S4-*P* 
MWMB030S4-*P*
NominalTons 1.5 2 2.5
PowerSupply-60hz-1phase 208/230V 208/230V 208/230V
Ratedloadamps 0.13 0.3 0.5
Output(W) 58 60 60
RoomTemperature 
Range(°F)
Cooling 62 - 90 62 - 90 62 - 90
Heating 32 - 86 32 - 86 32 - 86
AirVolume-cfm(High/Medium/Low) 530/410/295 695/625/485 795/645/500
SoundData(dBA)-Low/Medium/High 30.9/36.3/46.2 35.1/44.5/51.7 37.5/42/49
PipingConnections-Liquid/Gas-o.d.-are-in. 1/4/1/2 3/8 / 5/8 3/8 / 5/8
Drainconnectiono.d.-in. 1 1 1
Net/Shippingweights-lbs. 27 / 35 40/54 40/51