Lennox MHA Series - Single Zone Outdoor Units; Model Number Identification; Specifications

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7. Single Zone Outdoor Units
NOTE: Outdoor units can only be installed in an unenclosed outdoor environment.
7.1. ModelNumberIdentication
M H A 009 S 4 S-1 P
Series Type
M=Mini-Split
CoolingEfciency
S=StandardEfciency
Major Design Sequence
A=FirstGeneration
Nominal Cooling Capacity
009=0.75ton
012=1ton
018=1.5tons
024=2tons
Refrigerant Type
4=HFC-410A
Refrigerant Circuits
S=SingleCircuit
Minor Design Sequence
1=1stRevision
Voltage
L=115V-1phase-60Hz
P=208/230V-1phase-60Hz
Unit Type
H=HeatPumpr
7.2. Specications
Outdoor Unit Model No. MHA009S4S MHA012S4S MHA018S4S MHA024S4S
Nominal Size - Tons 0.75 1 1.5 2
Ambient Temperature Operating
Range - °F
Cooling 5-122 5-122 5-122 5-122
Heating 5-86 5-86 5-86 5-86
Sound Data (dBA) 52 55 57.5 58
Refrigerant (R-410A) Chargefurnished 1lb.14oz. 1lb.14oz. 2lbs.12oz. 3lbs.15oz.
Maximumlinelengthwithfurnishedcharge-ft. 25 25 25 25
Additionalchargerequiredperft.-oz. 0.16 0.16 0.16 0.32
Compressor No.andType (1)Rotary (1)Rotary (1)Rotary (1)Rotary
Refrigerantoiltype EsterOil
VG74
EsterOil
VG74
EsterOil
VG74
EsterOil
VG74
Refrigerantoilcharge-oz. 10.5 10.5 14.9 22.7
Connections - in. Liquid/Gaspipe(are) 1/4-3/8 1/4-1/2 1/4-1/2 3/8-5/8
Maximumrefrigerantpipelength-ft. 82 82 98 98
Max.differenceinlevelofindoorunit-ft. 33 33 66 66
Outdoor
Fan
(No.)Diameter-in. (1)16-3/4 (1)16-7/8 (1)16-7/8 (1)19-1/4
Totalairvolume-cfm 1175 1175 1175 1825
rpm 850 / 650 800/650(115V)
800 / 750 / 650
(208/230V)
800 / 750 / 650 800 / 750 / 650
Outdoor Coil Numberofrows 1 1 2 2
Finsperinch 21 21 21 21
Fintype Hydrophilicaluminium
Tubeoutsidediameter-in. 1/4 1/4 1/4 1/4
Tubetype Riedcoppertubing
Netfacearea-ft.² 4.04 4.72 4.67 5.12
Applicationarea-ft.² 129-189 172-252 251-368 330-484