Samsung KXWD Series Installation Manual page 45

Allowable length of the refrigerant pipe and the installation examples
H/P (AM038/048/055 KXWD✴)
1. Connection by Y-joint
Outdoor unit
2. Connection by Y-joint/EEV kit
Outdoor unit
Classification
Actual
Length
Maximum Outdoor
Equivalent
allowable unit ~
length
length of Indoor
pipe units
Main pipe
length
Total
length
Outdoor
Height
Maximum
unit ~
allowable
Indoor
height
Height
units
Maximum allowable Actual
length after Y-joint Length
Y-joint connection
The distance between the outdoor unit and the farthest indoor unit ≤ 75 m (246')
Ex) 8 indoor units
a+b+c+d+e+f+g+p≤ 75 m (246')
The distance between an outdoor unit and the farthest indoor unit ≤ 90 m (295')
The equivalent length between Y-joint and EEV kit: 0.5 m (1.64')
The main pipe(a) from the outdoor unit to the first Y-joint should be less than 50 m
(164')
The sum of the total length of pipes should be less then 200 m (656')
H1: The difference of height between an outdoor unit and indoor unit < 30 m (98')
H2: The difference of height between indoor units ≤ 15 m (49')
The distance between the first Y-joint and
the farthest indoor unit ≤ 40 m (131')
Ex) 8 indoor units
b+c+d+e+f+g+p≤ 40 m (131')
ENGLISH-45
Y-joint / EEV kit connection
Ex) 6 indoor units
a+b+c+d+j ≤ 75 m (246')
Allowable length between EEV kit and an
indoor unit ≤ 20 m (65')
Ex) h, l, j ≤ 20 m (65')