Capacity Coefficient Factor - LG ATNH24GPLE2 User Manual

SINGLE ZONE
1. DC Inverter SINGLE ZONE

1.8 Capacity coefficient factor

1) Rate of change in capacity due to the Main piping length
Rate of change in cooling capacity
Piping length(m(ft))
Rate of change
in capacity(%)
Rate of change in heating capacity
Piping length(m(ft))
Rate of change
in capacity(%)
2) Calculation of actual system capacity
① Outdoor unit standard maximum capacity
Q [from specification table]
rated
② Outdoor unit capacity at Ti, To temperature.
Q [from capacity table]
(Ti, To)
③ Outdoor unit capacity coefficient factor
F = Q
(Ti, To) (Ti, To)
④ Piping correction factor
F for piping length [from capacity coefficient factor table]
piping
⑤ Indoor Unit actual capacity
Q = Q
actual rated
Example)
• Outdoor unit model : AUUW24GD2 [LUU247HV]
• Indoor units (ATNH24GPLE2 [LCN247HV])
• Outdoor temperature : 104℉DB
• Indoor temperature: 66.2 ℉WB
• Piping length (ODU to IDU):49.2 ft
• Indoor unit actual cooling capacity in A room?
- Q : 24,000 Btu/h
rated
- Q : 23,160 Btu/h
(Ti, To)
- F : 23.16 / 24.0 = 96.5%
(Ti, To)
- F = 97.9%
piping
- Q = 24,000 x 0.965 x 0.979 = 22,673.6 Btu/h
actual
5(16.4) 10(32.8) 15(49.2) 20(65.6) 30(98.4) 40(131.2) 50(164.0) 60(196.9) 70(229.7) 75(246.0)
24k 100 99.3 97.9
42k 100 99.3 97.9
5(16.4) 10(32.8) 15(49.2) 20(65.6) 30(98.4) 40(131.2) 50(164.0) 60(196.9) 70(229.7) 75(246.0)
24k 100 99.7 99.2
42k 100 99.7 99.2
/ Q
rated
x F x F
(Ti, To) piping
96.6 93.8 91.1 88.4
96.6 93.8 91.1 88.4
98.7 97.7 96.6 95.6
98.7 97.7 96.6 95.6
Heat pump 60Hz/R410A
- - -
85.6 82.9 81.5
- - -
94.6 93.5 93
_ 11