Indoor Units; Model Number Identification; Indoor Unit Specifications - Lennox MHA Series Service Manual

1. Indoor Units

1.1. Model Number Identification
WALL-MOUNTED INDOOR UNITS
Series Type
M = Mini-Split
WH = Wall-Mounted Non-Ducted Unit
Major Design Sequence
1.2. Indoor Unit Specifications
Indoor Unit Model No.
Nominal Size - Tons
Power Supply - 60 hz - 1 phase
Room Temperature Range (°F)
Air Volume - cfm (High/Medium/Low)
Sound Data (dBA) - Low/Medium/High
Piping Connections - Liquid/Gas - o.d. - flare - in.
Indoor Unit Model No.
Nominal Size - Tons
Power Supply - 60 hz - 1 phase
Room Temperature Range (°F)
Air Volume - cfm (High/Medium/Low)
Sound Data (dBA) - Low/Medium/High
Piping Connections - Liquid/Gas - o.d. - flare - in.
M WH A 009 S 4 - 1 P
Unit Type
A = First Generation
Nominal Cooling Capacity
009 = 0.75 ton
012 = 1 ton
018 = 1.5 tons
024 = 2 tons
Rated load amps
Output (W)
Cooling
Heating
Drain connection o.d. - in.
Net/Shipping weights - lbs.
Rated load amps
Output (W)
Cooling
Heating
Drain connection o.d. - in.
Net/Shipping weights - lbs.
Cooling Efficiency
S = Standard Efficiency
MWHA009S4
0.75
115V 208/230V
0.7 0.06
20 20
62 - 90 62 - 90
32 - 86 32 - 86
247 / 182 / 129 309 / 285 / 187
38 / 32 / 25 38 / 32 / 25
1/4 / 3/8 1/4 / 3/8
1
18 / 23 18 / 23
MWHA018S4 MWHA024S4
1.5
208/230V 208/230V
0.11 0.37
30 60
62 - 90 62 - 90
32 - 86 32 - 86
449 / 393 / 262 706 / 588 / 450
43 /35 / 30.5 48 / 42.5 / 34
1/4 / 1/2 3/8 / 5/8
1
25 / 33 31 / 40
3
Voltage
L = 115V-1 phase-60Hz
P = 208/230V-1 phase-60Hz
Minor Design Sequence
1 = 1st Revision
Refrigerant Type
4 = HFC-410A
MWHA012S4
115V
0.7
20
62 - 90
32 - 86
294 / 212 / 171
38 / 30 / 28
1/4 / 1/2
1 1
19 / 25
2
1
1
208/230V
0.06
20
62 - 90
32 - 86
324 / 282 / 212
38 / 32 / 24
1/4 / 1/2
1
19 / 25