Mitsubishi Heavy Industries FDTCVA SERIES Technical Manual page 136

(ii) Models 302 ~ 602
±
Ambient air temperature 5°C or more
Equivalent piping length
Heating
302 model
402 model
502 model
602 model
Cooling
302 model
402 model
502 model
602 model
±
Ambient air temperature -5°C
Equivalent piping length
Heating
302 model
402 model
502 model
602 model
Cooling
302 model
402 model
502 model
602 model
±
Ambient air temperature -15°C
Equivalent piping length
Heating
302 model
402 model
502 model
602 model
Cooling
302 model
402 model
502 model
602 model
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.
• Equivalent Length = Actual Length + (Equivalent bend length x number of bends in the piping.)
Equivalent length per bend.
Gas Pipe Diameter (mm)
Equivalent Bend Length
(iii) Models 802, 1002
± Ambient air temperature 5°C or more
Equivalent piping length
Heating
802 model
1002 model
802 model
Cooling
1002 model
802 model
1002 model
(1) (m)
7.5
1
1
1
φ15.88
1
1
1.008
1.016
φ19.05
1.022
1.026
(1)
(m)
7.5
1
0.800
1
φ15.88
1
1
0.806
1.016
φ19.05
1.022
1.026
(1) (m)
7.5
1
0.600
1
φ15.88
1
1
0.605
1.016
φ19.05
1.022
1.026
φ12.7 φ15.88
0.20
(1)
(m) 7.5 10 15
1 0.998 0.995 0.991 0.988 0.984 0.981 0.977 0.974 0.970 0.967
1 0.998 0.995 0.991 0.988 0.984 0.981 0.977 0.974 0.970 0.967
φ25.4
1 0.996 0.990 0.984 0.978 0.972 0.966 0.960 0.954 0.948 0.942
0.993 0.990 0.984 0.977 0.971 0.964 0.958
φ22.22
0.988 0.983 0.973 0.963 0.953 0.943 0.933
1.003 1.002
φ28.58
1.004 1.003 0.999 0.996 0.992 0.989 0.985 0.982 0.978 0.975 0.971
10 15 20 25
1 1 1 1
0.996 0.989 0.982 0.975
0.991 0.978 0.964 0.951
0.986 0.968 0.950 0.932
0.985 0.966 0.946 0.927
1.006 1.003 1 0.997
1.013 1.007 1.002 0.996
1.009
1.018 1.001 0.992
1.021 1.011 1.002 0.992
10 15 20 25
1 1 1 1
0.793 0.779 0.765 0.751
0.987 0.963 0.938 0.914
0.983 0.954 0.926 0.897
0.982 0.952 0.921 0.891
0.798 0.786 0.774 0.762
1.008 0.992 0.975 0.959
1.013 0.994 0.974 0.955
1.016 0.996 0.975 0.955
10 15 20 25
1 1 1 1
0.569 0.549 0.528
0.590
0.983 0.948 0.913 0.878
0.980 0.940 0.901 0.861
0.979 0.938 0.897 0.856
0.590 0.569 0.548 0.527
1.002 0.976 0.949 0.922
1.007 0.978 0.948 0.918
1.010 0.980 0.949 0.918
φ19.05
0.25 0.30
20 25 30 35
1 0.998 0.996 0.994 0.992 0.990 0.988 0.986 0.984
135
- -
30 35 40 45
0.998 0.998 0.993 0.993
0.954 0.947
0.968 0.961
0.937 0.924 0.910 0.897
0.914 0.896 0.878 0.860
0.907 0.868 0.849
0.888
0.994 0.991 0.988 0.985
0.991 0.985 0.980 0.974
0.984 0.975 0.967 0.958
0.983 0.973 0.964 0.954
30 35 40 45
0.998 0.998 0.993 0.993
0.738 0.724 0.710 0.696
0.890 0.866 0.841 0.817
0.868 0.839 0.810 0.781
0.861 0.830 0.800 0.769
0.750 0.738 0.727 0.715
0.943 0.927 0.911 0.895
0.936 0.917 0.898 0.879
0.935 0.915 0.895 0.875
30 35 40 45
0.998 0.998 0.933 0.993
0.507 0.487 0.466 0.446
0.843 0.808 0.773 0.738
0.821 0.782 0.742 0.702
0.814 0.773 0.732 0.690
0.507 0.486 0.465 0.444
0.896 0.869 0.842 0.816
0.889 0.859 0.829 0.800
0.888 0.857 0.826 0.796
40 45 50 55 60
0.963
0.963
0.936
– – – – –
– – – – –
0.982
0.968
50 55
0.988 0.988
0.940 0.933
0.883 0.870
0.842 0.824
0.829 0.810
0.982 0.979
0.969 0.963
0.950 0.941
0.945 0.935
50 55
0.988 0.988
0.682 0.669
0.793 0.769
0.752 0.724
0.739 0.709
0.703 0.691
0.879 0.863
0.860 0.841
0.855 0.835
50 55
0.988 0.988
0.425 0.404
0.703 0.668
0.662 0.623
0.649 0.608
0.424 0.403
0.789 0.762
0.770 0.740
0.765 0.734
65 70 75
0.960 0.956 0.953
0.960 0.956 0.953
0.924 0.918
0.930
– – –
– – –
0.980 0.978 0.976
0.964 0.961 0.957