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

7. Single Zone Outdoor Units

NOTE: Outdoor units can only be installed in an unenclosed outdoor environment.
7.1. Model Number Identification
Series Type
M = Mini-Split
H = Heat Pumpr
Major Design Sequence
A = First Generation
Nominal Cooling Capacity
7.2.

Specifications

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