Noise Curve - Lennox LI012HI-210P432 Service Manual

2.4 Noise Curve

12K(AFD)
Indoor side noise
50
45
40
35
30
25
20
15
Super
Low
Low
Indoor fan motor rotating speed
24K/18K/12K(AFC)
50
40
30
20
L
Indoor fan motor rating speed
8
12K
Middle Middle
Middle
Low High
Indoor side noise
24K
18K
12K
M H SH
Outdoor side noise
54
52
50
48
46
44
42
40
Super
High
High
75
70
65
60
55
50
45
40
20
Heating
Cooling
20 3 0 4 0 50
Compressor frequency(Hz)
Outdoor side noise
Heating
Cooling
30 40 50 60 70 80
Compressor frequency(Hz)
Service Manual
60 70 80
90 100
Technical Information