6 Installation
Installer reference guide
20
RZQG71~Y1 + RZQSG100~Y1
Split system air conditioners
4P385522-1A – 2016.10
Triple
(a)
L2
L3
L4
H1
H2
L1
Double twin
(a)
H1
H2
L1
L2
L3
L4
L5
L6
L7
(a)
Assume that the longest line in the illustration corresponds
with the actual longest pipe, and the highest unit in the
illustration corresponds with the actual highest unit.
L1
Main piping
L2~L7
Branch piping
H1
Height difference between the highest indoor unit and the
outdoor unit
H2
Height difference between the highest and the lowest
indoor unit
Refrigerant branch kit
6.6.4
To determine the additional refrigerant
amount
To determine if adding additional refrigerant is necessary
If
Then
(L1+L2+L3+L4+L5+L6+L7)≤
chargeless length
Chargeless length=
▪ 10 m (size‑down)
▪ 30 m (standard)
▪ 15 m (size‑up)
You do not have to add
additional refrigerant.
(L1+L2+L3+L4+L5+L6+L7)>
chargeless length
You must add additional
refrigerant.
For future servicing, encircle the
selected amount in the tables
below.
INFORMATION
Piping length is the largest one way length of liquid piping.
To determine the additional refrigerant amount (R in kg) (in
case of pair)
L1 (m)
L1 (standard): 30~40 m 40~50 m 50~60 m
(a)
60~75 m
(a)
L1 (size-up): 15~20 m 20~25 m 25~30 m
(a)
30~35 m
(a)
R:
0.5 kg
1.0 kg
1.5 kg
2.0 kg
(a)
Only for RZQG100~140.
To determine the additional refrigerant amount (R in kg) (in
case of twin, triple and double twin)
1
Determine G1 and G2.
G1 (m)
Total length of <x> liquid piping
x=
Ø9.5 mm
(standard)
x=
Ø12.7 mm
(size‑up)
G2 (m)
Total length of
Ø6.4
mm liquid piping
2
Determine R1 and R2.
If
Then
G1>30 m
(a)
Use the table below to determine
R1 (length=
G1−30 m
)
(a)
and R2
(length=
G2
).
If
Then
G1≤30 m
(a)
(and G1+G2>30 m)
(a)
R1=0.0 kg.
Use the table below to determine
R2 (length=
G1+G2−30 m
)
(a)
.
(a)
In case of size‑up: Replace 30 m by 15 m.
In case of
standard
liquid pipe size:
Length
0~10 m
10~20 m
20~30 m
(a)
30~45 m
(a)
R1:
0.5 kg
1.0 kg
1.5 kg
2.0 kg
R2:
0.3 kg
0.6 kg
0.9 kg
1.2 kg
In case of
size‑up
liquid pipe size:
Length
0~5 m
5~10 m
10~15 m
(a)
15~20 m
(a)
R1, R2:
0.5 kg
1.0 kg
1.5 kg
2.0 kg
(a)
Only for RZQG100~140.
3
Determine the additional refrigerant amount: R=R1+R2.
Examples
Layout
Additional refrigerant amount (R)
L2=7 m
(Ø6.4 mm)
L3=5 m
(Ø6.4 mm)
L1=35 m (Ø9.5 mm)
RZQG100
Case: Twin, standard liquid pipe size
1 G1 Total Ø9.5
=> G1=35 m
G2 Total Ø6.4 => G2=7+5=12 m
2 Case: G1>30 m
R1 Length=G1−30 m=5 m
=> R1=0.5 kg
R2 Length=G2=12 m
=> R2=0.6 kg
3 R
R=R1+R2=0.5+0.6=1.1 kg
L2=20 m
(Ø6.4 mm)
L3=17 m
(Ø6.4 mm)
L4=17 m
(Ø6.4 mm)
L1=5 m (Ø9.5 mm)
RZQG125
Case: Triple, standard liquid pipe size
1 G1 Total Ø9.5 => G1=5 m
G2 Total Ø6.4 => G2=20+17+17=54 m
2 Case: G1≤30 m (and G1+G2>30 m)
R1 R1=0.0 kg
R2 Length=G1+G2−30 m=5+54−30=29
m
=> R2=0.9 kg
3 R
R=R1+R2=0.0+0.9=0.9 kg
6.6.5
To determine the complete recharge
amount
For RZQG only: When piping length is <5 m, a complete recharge of
the unit is required.
To determine the complete recharge amount (kg) (in case of
standard liquid pipe size)
Model
Length (m)
(a)
5~10
(b)
10~20 20~30 30~40 40~50 50~60 60~75
RZQG71
1.9
2.4
2.9
3.4
3.9
—
—
RZQG100~140
3.0
3.5
4.0
4.5
5.0
5.5
6.0
R125
1.9
2.4
2.9
3.4
3.9
—
—
RZQSG140
3.0
3.5
4.0
4.5
5.0
—
—
(a)
Length = L1 (pair); L1+L2 (twin, triple); L1+L2+L4 (double
twin)
(b)
For RZQG: 3~10 m
