Mitsubishi Heavy Industries MHI FDU71VNXVF1 Technical Manual page 42

Piping length limitations
Item
Max. one way piping length
Max. vertical height difference
Note (1) Values in the table indicate the one way piping length between the indoor and outdoor units.
How to obtain the cooling and heating capacity
Example : The net cooling capacity of the model FDU100VNXVF1 with the air flow "P-High", the piping length of 15m, the outdoor unit
located 5m lower than the indoor unit, indoor wet-bulb temperature at 19.0℃ and outdoor dry-bulb temperature 35℃ is
Net cooling capacity =
Net cooling total capacity
of FDU100VNXVF1
(Outdoor temp. : 35℃DB
Indoor temp. : 19℃WB)
shown in table 1.8.1
Model
× ×
10.0 1.00
Air flow : P-High
shown in table 1.8.2
Piping length :15m
(Gas pipe size is
shown in table 1.8.3

-
71
50m
Outdoor unit is higher 30m
Outdoor unit is lower 15m
.
×
0.978 0.99 = . 9.7kW
Height diff. :5m
(Outdoor unit : below)
shown in table 1.8.4
15.88)
φ
-
'10 • PAC-DB-136
'12 • PAC-T-178
100, 125, 140
100m