Haier HBU-18HF03 Manual page 94

7. Calculation method of the dimension of the simple quadrate air duct
B
A
The calculation of duct resistance (the simple calculation is as follow table)
The chosen chart of simple duct
100
200
300
400
500
600(10)
800
1,000
1,200(20)
1,400
1,600
8. The attentive matters in installation of air suction and discharging duct
9. The examples of improper installation
For HDU-42/50*
A
A
250 x 60
250 x 90
250 x 120
250 x 140
250 x 170
250 x 190
250 x 230
250 x 270
250 x 310
250 x 350
250 x 390
250 x 430
1,800(30)
250 x 470
2000
250 x 560
2400
250 x 650
3,000(50)
250 x 740
3,500
250 x 830
4,000
250 x 920
4,500
250 x 1000
5,000
250 x 1090
5,500
250 x 1180
6,000(100)
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Installation