Mitsubishi Electric FDF71VNXVD Technical Manual page 44

Limitation on unit and piping installation - single, twin.
D e c s i r t p o i s n Models for outdoor unit
FDC71VNX
FDC100 ・ 125 ・ 140VN, FDC100 ・ 125 ・ 140VS
FDC100 ・ 125 ・ 140VNX, FDC100 ・ 125 ・ 140VSX
One-way pipe length
FDC200VS
FDC200VS
FDC250VS
FDC100 ・ 125 ・ 140VNX, FDC100 ・ 125 ・ 140VSX
FDC100 ・ 125 ・ 140VN, FDC100 ・ 125 ・ 140VS
Main pipe length FDC200VS
FDC200VS
FDC250VS
FDC71VNX
One-way pipe length after first branching
FDC100 ・ 125 ・ 140VNX, FDC100 ・ 125 ・ 140VSX
point
FDC100 ・ 125 ・ 140VN,
Difference of pipe length after first branching point
When outdoor unit is
positioned higher
Elevation difference between indoor and
outdoor unit
When outdoor unit is
positioned lower
Elevation difference among indoor units
Single type
Indoor unit
Outdoor unit
H
L
(1) A riser pipe must be part of the main.
A branching pipe set should be installed horizontally at point as close to an indoor unit as possible.
(2) Reduce refrigerant amount by 1.0kg from the factory charge when refrigerant piping is shorter than 3m.
9 5 . 2
Liquid piping
12.7
25.4 or
Gas piping
2 2 2 . 2
9 5 . 2
Liquid piping
12.7
25.4 or
Gas piping
2 2 2 . 2
FDC100 ・ 125 ・ 140 ・ 200 ・ 250VS
FDC71VNX
FDC100 ・ 125 ・ 140VNX, FDC100 ・ 125 ・ 140VSX
FDC100 ・ 125 ・ 140VN, FDC100 ・ 125 ・ 140VS
FDC200 ・ 250VS
FDC71VNX
FDC100 ・ 125 ・ 140VNX, FDC100 ・ 125 ・ 140VSX
FDC100 ・ 125 ・ 140VN, FDC100 ・ 125 ・ 140VS
FDC200 ・ 250VS
Twin type
Indoor unit
Indoor unit
H
L1
L2
L(riser)
Outdoor unit
Dimensional limitations
≦ 50m
≦ 100m
≦
4 0 m
≦ 70m
28.58
≦
3 5 m
≦ 100m
≦ 50m
≦
4 0 m
≦ 70m
28.58
≦
3 5 m
≦ 20m
≦ 30m
≦ 10m
≦ 30m
≦ 15m
≦0.5m
h
For Twin type
Model for outdoor units
FDC100 ・ 125 ・ 140VNX, FDC100 ・ 125 ・ 140VS
FDC100 ・ 125 ・ 140VN, FDC100 ・ 125 ・ 140VS
・
FDC200 2 5 0 V S
Marks appearing in the drawing
Single type Twin type
L
L+L1+L2
L+L1
L+L2
L
L1， L2
L1-L2
L2-L1
H
H
H
H
h
Branch piping
set (option)
DIS-WA1
DIS-WB1