1.9.2 Correction of cooling and heating capacity in relation to air flow rate control
(fan speed)
1.9.3 Correction of cooling and heating capacity in relation to one way length of
refrigerant piping
It is necessary to correct the cooling and heating capacity in relation to the one way equivalent piping length between the indoor
and outdoor units.
(1) Models 40~60
7.5 10 15 20 25 30 35
1 0.995 0.992 0.990 0.987 0.984 0.981
Cooling
40 model 1 0.997 0.991 0.985 0.980 0.974 0.968
50 model 1 0.996 0.989 0.981 0.973 0.966 0.958
60 model 1 0.995 0.986 0.977 0.967 0.958 0.948
Note (1) Calculate the equivalent length using the following formula.
However, install the piping so that the equivalent length is within +5 m of the piping distance limit (actual length) for each respective piping system.
(2) Models 71 ~ 140
Note (1) Calculate the equivalent length using the following formula.
However, install the piping so that the piping length is within +5 m of the limit length (actual length) for the respective types.
Note (1) Calculate the equivalent length using the following formula.
However, install the piping so that the piping length is within +5 m of the limit length (actual length) for the respective types.
(3) Models 200, 250
• Equivalent Length =Actual Length + (Equivalent bend length x number of bends in the piping.)
Equivalent length per bend.
0.20 0.25 0.30
Gas Pipe Diameter (mm)
Equivalent Bend Length
φ
22.22
φ
19.05
φ
15.88
φ
12.7
0.35
φ
25.4
0.40
φ
28.58
0.45
1.00 0.97 0.95
Fan speed
Coefficient
LoMeP-Hi or Hi
(
1
)
55
0.988
0.933
0.870
0.824
0.810
0.979
0.963
0.941
0.935
40 45 50
0.993
0.954
0.910
0.878
0.868
0.988
0.980
0.967
0.964
0.993
0.947
0.897
0.860
0.849
0.985
0.974
0.958
0.954
0.988
0.940
0.883
0.842
0.829
0.982
0.969
0.950
0.945
30 35
0.998
0.968
0.937
0.914
0.907
0.994
0.991
0.984
0.983
0.998
0.961
0.924
0.896
0.888
0.991
0.985
0.975
0.973
15 20 25
1
0.989
0.978
0.968
0.966
1.003
1.007
1.009
1.011
1
0.982
0.964
0.950
0.946
1
1.002
1.001
1.002
1
0.975
0.951
0.932
0.927
0.997
0.996
0.992
0.992
7.5 10
1
1
1
1
1
1.008
1.016
1.022
1.026
1
0.996
0.991
0.986
0.985
1.006
1.013
1.018
1.021
Equivalent piping length (m)
Equivalent piping length (m)
Cooling
Heating
Heating
71 model
100 model
125 model
140 model
71 model
100 model
125 model
140 model
φ15.88
φ19.05
φ25.4
φ22.22
φ28.58
Equivalent piping length
(1)
(m)
Cooling
Heating
7.5 10 15 20 25 30 35 40 45 50 55
1 0.998 0.995 0.991 0.988 0.984 0.981 0.977 0.974 0.970 0.967
1.007 1.005 1.002 0.998 0.995 0.991 0.988 0.984 0.981 0.977 0.974
1.012 1.008 1.002 0.996 0.990 0.984 0.978 0.972 0.966 0.960 0.953
1
0.997 0.991 0.984 0.978 0.971 0.965
1
0.995 0.985 0.975 0.965 0.954 0.944
1.010 1.009 1.007 1.005 1.003 1.001 0.999 0.997 0.995 0.993 0.991
1.016 1.015 1.011 1.008 1.004 1.001 0.997 0.994 0.990 0.987 0.983
60
0.963
0.970
0.947
0.989
0.980
65
0.960
0.967
0.941
0.987
0.976
70
0.956
0.963
0.935
0.985
0.973
75
0.953
0.960
0.929
– – – –
– – – –
–
–
–
–
–
–
–
–
0.983
0.969
200 model
250 model
200 model
250 model
200 model
250 model
(1)
(1)
Note (1) Models FDU only.
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