Mitsubishi Heavy Industries FDTC40ZHXV Technical Manual page 136

(4) When the outdoor unit is located below indoor units in cooling mode, or when the outdoor unit is located above indoor units in
heating mode, the correction coefficient mentioned in the below table should be subtracted from the value in the above table.
Height difference between the indoor unit and
outdoor unit in the vertical height difference
Adjustment coefficient
Piping length limitations
Item
Max. one way piping length
Max. vertical height difference
Notes (1) Values in the table indicate the one way piping length between the indoor and outdoor units.
(2) When 22.22 gas pipe is applied to 200 and 250, maximum one way length is limited to 35m.
How to obtain the cooling and heating capacity
Example : The net cooling capacity of the model FDUM100VNV 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
Net cooling capacity
Net cooling total capacity
of FDUM100VNV
(Outdoor temp. : 35 DB
Indoor temp. : 19 WB)
shown in table (1)
Model
40~60
40m
Outdoor unit is higher 20m
Outdoor unit is lower 20m
= 10.0 × 1.00
Air flow : "High"
shown in table (2)
5m 10m
0.01 0.02
71, 100, 125, 140
50m
and outdoor dry-bulb temperature 35
(0.978 - 0.01) . =. 9.7kW
×
Piping length : 15m
(Gas pipe size is φ15.88)
shown in table (3)
129
- -
15m 20m 25m
0.03 0.04 0.05
200, 250
70m
Outdoor unit is higher 30m
Outdoor unit is lower 15m
Height diff. : 5m
(Outdoor unit : below)
shown in table (4)
30m
0.06
(2)
is