Mitsubishi Heavy Industries FDTC50ZHXV Technical Manual page 355

Operating temperature range
Cooling
50
40
30
20
10
0
-10
-20
10
Heating
30
25
20
15
10
5
-20
Height and length restrictions for refrigerant piping
Twin type
Outdoor unit Indoor unit
L
ra
rb
Triple type
The Indoor_outdoor piping length differences among indoor units are less than 3m.
Model 140, 200 only
Indoor uni
Outdoor unit
a
L
r
A
b
r
c
r
12 14 16
Indoor air W.B. temperature (˚CW.B.)
Range of heating usage
-15 -10 -5
Outdoor air W.B. tem p erature ( ˚CW.B. )
Models 71~140
One-way pipe length (m) L +ra +rb
Branch pipe length (m)
Difference in height between indoor units (m) h=0.5 or less
Models 200, 250
A
One-way pipe length (m) L +ra
B
Branch pipe length (m)
Difference in height between indoor units (m) h=0.5 or less
Model 140
t
One-way pipe length (m) L +ra +rb +rc
Branch pipe length (m)
Difference in height between indoor units (m) h1=0.5 or less, h2=0.5 or less, h3=0.5 or less
B
C
Model 200
One-way pipe length (m) L +ra
Branch pipe length (m)
Difference in height between indoor units (m) h1=0.5 or less, h2=0.5 or less, h3=0.5 or less
Range of cooling usage
18 20 22
0 5 10
Ira –rb I
70, L +rb
Ira –rb I
Ira –rb I < 3, Ira –rc I < 3, Irb – rc I < 3
ra 30, rb
70, L +rb
Ira –rb I < 3, Ira – rc I < 3, Irb – rc I < 3
30, rb
ra
345
- -
24 26
15 20 25
50
10, ra 30, rb 30
70
10, ra 30, rb 30
50
30, rc 30
70, L +rc 70
30, rc 30