Mitsubishi Heavy Industries FDCVA1002HESAR, Technical Manual, Page: 135 / 329

-
134
-
0.50
0.60
0.70
0.80
0.90
1.00
1.10
-15 -13 -9 -5 -1 3 7 11 15 19 23 27 31 35 39 43
Ambient air temperature (˚CDB)
Sensib
le heat factor
Indoor air
temperature 12˚CW.B
Indoor air
temperature 24˚CW.B
Indoor air
temperature 19˚CW.B
Indoor air
temperature 16˚CW.B
(3) Correction of cooling and heating capacity in relation to air fl ow rate control (fan speed)
Coeffi cient: 1.00 at High, 0.97 at Middle, 0.95 at Low
(4) 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.
(i) Models 151~251
Equivalent piping length
(1)
m 7.5 10 15 20 25 30 35 40 45 50 55
Heating 1.0 0.995 0.992 0.990 0.987 0.984 0.981 0.978 0.975 0.972 0.970
Cooling
151 model 1.0 0.997 0.991 0.985 0.980 0.974 0.968 0.962 0.956 — —
201 model 1.0 0.996 0.989 0.981 0.973 0.966 0.958 0.951 0.943 — —
251 model 1.0 0.995 0.986 0.977 0.967 0.958 0.948 0.939 0.930 — —
Note (1) Calculate the equivalent length using the following formula.
However, install the piping so that the equivalent length is 5 m of the piping distance limit (actual length) for each respective piping system.
Equivalent length = Actual (equivalent length of bends x number of bends in the piping)
Equivalent length for 1 bend
φ
12.7
0.20
φ
15.88
0.25
Gas pipe diameter (mm)
Bend equivalent length
3) Models 802, 1002