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7. CAPACITY TABLES
WY-Series-575V
7-3-2. Heating capacity correction
7-3-3. How to obtain the equivalent piping length
1. PQHY-P72ZLMU
Equivalent length = (Actual piping length to the farthest indoor unit) + (1.15 x number of bent on the piping) [ft.]
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.35 x number of bent on the piping) [m]
2. PQHY-P96, 120ZLMU
Equivalent length = (Actual piping length to the farthest indoor unit) + (1.38 x number of bent on the piping) [ft.]
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.42 x number of bent on the piping) [m]
3. PQHY-P144, 168, 192, 216, 240Z(S)LMU
Equivalent length = (Actual piping length to the farthest indoor unit) + (1.64 x number of bent on the piping) [ft.]
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 x number of bent on the piping) [m]
4. PQHY-P288, 312ZSLMU
Equivalent length = (Actual piping length to the farthest indoor unit) + (2.30 x number of bent on the piping) [ft.]
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.70 x number of bent on the piping) [m]
5. PQHY-P336, 360ZSLMU
Equivalent length = (Actual piping length to the farthest indoor unit) + (2.63 x number of bent on the piping) [ft.]
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.80 x number of bent on the piping) [m]
Heating capacity correction factor
ft.
0
600
500
400
300
200
100
0.80
0.90
1.00
Piping equivalent length
PQHY-P72ZLMU
Heating capacity correction factor
ft.
0
600
500
400
300
200
100
0.80
0.90
1.00
Piping equivalent length
PQHY-P288, 312ZSLMU
Heating capacity correction factor
ft.
0
600
500
400
300
200
100
0.80
0.90
1.00
Piping equivalent length
PQHY-P96, 120ZLMU
Heating capacity correction factor
ft.
Piping equivalent length
0
600
500
400
300
200
100
0.80
0.90
1.00
PQHY-P336, 360ZSLMU
Heating capacity correction factor
ft.
0
600
500
400
300
200
100
0.80
0.90
1.00
Piping equivalent length
PQHY-P144, 168, 192, 216, 240Z(S)LMU
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