Operating Instructions and Installation
Samsung Electronics11-28
Allowable Length of the Refrigerant Pipe and the Installation Examples (cont.)
• Select the first Y-joint depending on the outdoor unit capacity.
Select the first Y-joint depending on the outdoor unit capacity.
Select the other Y-joints and branch joints depending on the total capacity of attached indoor units below the selected joint
individually.
Using only Y-joint Using Y-joint and branch joint Using only branch joint
The distance between the outdoor unit and the furthest indoor unit ≤ 170m
Ex)Indoor unit 8 :
a+b+c+d+e+f+g+p ≤ 170m
Ex)Indoor unit 6:a+b+h ≤ 170m
Ex)Indoor unit 8:a+i ≤ 170m
Actual
length
Actual
length
Equivalent
length
Total
length
Height
Height
Height
Actual
length
Maximum
allowable
length of
pipe
Maximum
allowable
height
Maximum allowable length
after the first branch pipe
Outdoor unit~
Indoor unit
Outdoor unit~
Outdoor unit
(16HP
≤
)
Outdoor unit~
Indoor unit
Outdoor unit~
Outdoor unit
Indoor unit~
Indoor unit
The distance between the outdoor and the furthest indoor unit ≤ 190m
(The equivalent length of Y-joint :0.5m,The equivalent length of branch joint :1m)
The total distance from the outdoor unit to all indoor units ≤ 300m
The distance between the outdoor joint and the outdoor unit ≤ 10m,
Equivalent length ≤ 13m
H1:Difference of height between the outdoor unit and
indoor unit → <50m,
When the outdoor unit is lower → <40m
H2:Difference of height among the indoor units →≤15m
H3:Difference of height among the outdoor units →≤5m
The distance between the first Y-joint and the indoor unit ≤ 45m
Ex)Indoor unit 8 : b+c+d+e+f+g+p ≤ 45m/
Indoor unit 6 : b+h ≤ 45m/Indoor unit 8 : i ≤ 45m
The distance between the EEV kit and indoor unit ≤ 20m
r≤10m(Equivalent length≤13m)
s≤10m(Equivalent length≤13m)
t≤10m(Equivalent length≤13m)
8,10
12,14
16,18,20,22,24
26,28,30,32,34
36,38,40,42,
44,46,48
MXJ-YA2212A
MXJ-YA2512A
MXJ-YA2815A
MXJ-YA3119A
MXJ-YA3819A
Selecting the first Y-joint
Outdoor capacity(HP) Y-joint model
X < 22.4
22.4 ≤ X < 33.0
33.0 ≤ X < 47.0
47.0 ≤ X < 71.0
71.0 ≤ X < 104.0
104.0 ≤ X
MXJ-YA1509A
MXJ-YA2212A
MXJ-YA2512A
MXJ-YA2815A
MXJ-YA3119A
MXJ-YA3819A
The other Y-joint
Total capacity of
attached indoor units
Y-joint model
below this Y-joint (kW)
Branch joint
Total capacity of attached
indoor units below this
Branch joint model
branch joint (kW)
16~48 MXJ-T3819A
Outdoor joint
Outdoor capacity(HP) Outdoor joint model
X < 47.0
Connection of below
4 units of indoor unit
X <71.0
Connection of 5 to
8 units of indoor unit
71.0 ≤ X
MXJ-HA2512A
MXJ-HA3115A
MXJ-HA3819A
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