-
49
-
(4)
When the outdoor unit is located at a lower height than the indoor unit in cooling operation and when the outdoor unit is located
at a higher height than the indoor unit in heating operation, the following values should be subtracted from the values in the
above table.
Height difference between the indoor unit and
outdoor unit in the vertical height difference
5m
10m
15m
20m
25m
30m
Adjustment coefficient
0.01
0.02
0.03
0.04
0.05
0.06
Piping length limitations
Item
Model
FDCA301~601 models
FDCA801, 1001 models
Max. one way piping length
50m
70m
Max. vertical height difference
Outdoor unit is higher 30m Outdoor unit is lower 15m
How to obtain the cooling and heating capacity
Example : The net cooling capacity of the model FDCA301HEN with the air flow “High”, the piping length of 15m, the outdoor unit
located 5m lower than the indoor unit, indoor wet-bulb temperature at 19.0 ˚C and outdoor dry-bulb temperature 35 ˚C is
Net cooling capacity =
7200
×
1.00
×
(0.989 - 0.01)
×
1.0
=
7049 w
Factor by air
temperatures
FDCA301HEN
Air flow
“High”
Length 15m.
Height difference 5 m
Note
(1) Values in the table indicate
the one way piping length
between the indoor and
outdoor units.