6 Installation
Installer reference guide
21
RZAG71~Y1
Sky Air Alpha-series
4P486046-1A – 2017.08
Length
0~10 m
10~20 m
20~30 m
30~40 m
40~45 m
R1:
0.35 kg
0.7 kg
1.05 kg
(a)
1.4 kg
(a)
R2:
0.2 kg
0.4 kg
0.6 kg
0.8 kg
(a)
1 kg
(b)
In case of
size‑up
liquid pipe size:
Length
0~5 m
5~10
m
10~15
m
(a)
15~20
m
(a)
20~30
m
30~40
m
40~45
m
R1:
0.35 kg 0.7 kg
1.05 kg
1.4 kg
—
—
—
R2:
0.35 kg
0.7 kg
1.05 kg 1.4 kg
—
(a)
Only for RZAG100~140.
(b)
Only for RZAG125-140.
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=45 m (Ø9.5 mm)
RZAG100
Case: Twin, standard liquid pipe size
1 G1 Total Ø9.5
=> G1=45 m
G2 Total Ø6.4 => G2=7+5=12 m
2 Case: G1>40 m
R1 Length=G1−40 m=5 m
=> R1=0.35 kg
R2 Length=G2=12 m
=> R2=0.4 kg
3 R
R=R1+R2=0.35+0.4=0.75 kg
L2=20 m
(Ø6.4 mm)
L3=17 m
(Ø6.4 mm)
L4=17 m
(Ø6.4 mm)
L1=15 m (Ø9.5 mm)
RZAG125
Case: Triple, standard liquid pipe size
1 G1 Total Ø9.5 => G1=15 m
G2 Total Ø6.4 => G2=20+17+17=54 m
2 Case: G1≤40 m (and G1+G2>40 m)
R1 R1=0.0 kg
R2 Length=G1+G2−40 m=15+54−40=2
9 m
=> R2=0.6 kg
3 R
R=R1+R2=0.0+0.6=0.6 kg
6.6.6
To determine the complete recharge
amount
To determine the complete recharge amount (kg) (in case of
standard liquid pipe size)
Model
Length (m)
(a)
3~40
40~50 50~55 55~60 60~75 75~85
RZAG71
2.95
3.3
3.5
—
—
—
RZAG100~140
3.75
4.1
4.45
4.8
5.3
(a)
Length=L1 (pair); L1+L2 (twin, triple); L1+L2+L4 (double
twin)
To determine the complete recharge amount (kg) (in case of
size‑up liquid pipe size)
Model
Length (m)
(a)
3~15
15~20
20~25
25~35
RZAG71
2.95
3.3
—
RZAG100~140
3.35
3.7
4.05
4.4
(a)
Length=L1 (pair); L1+L2 (twin, triple); L1+L2+L4 (double
twin)
To determine the complete recharge amount (kg) (in case of
size‑down liquid pipe size)
Model
Length (m)
(a)
3~10
RZAG71
2.95
RZAG100~140
3.75
(a)
Length=L1 (pair); L1+L2 (twin, triple); L1+L2+L4 (double
twin)
6.6.7
Charging refrigerant: Setup
See
"6.5.3 Checking refrigerant piping: Setup" on page 18
.
6.6.8
To charge additional refrigerant
WARNING
▪ Only use R32 as refrigerant. Other substances may
cause explosions and accidents.
▪ R32 contains fluorinated greenhouse gases. Its global
warming potential (GWP) value is 675. Do NOT vent
these gases into the atmosphere.
▪ When charging refrigerant, always use protective
gloves and safety glasses.
CAUTION
To avoid compressor breakdown, do NOT charge more
than the specified amount of refrigerant.
Prerequisite:
Before charging refrigerant, make sure the refrigerant
piping is connected and checked (leak test and vacuum drying).
1
Connect the refrigerant cylinder to both the service port of the
gas stop valve and the service port of the liquid stop valve.
2
Charge the additional refrigerant amount.
3
Open the stop valves.
If pump down is needed in case of dismantling or relocating the
system, see
"11.3 To pump down" on page 28
6.6.9
To activate/deactivate the vacuum mode
field setting
Description
To perform vacuum drying or a complete recharge of the outdoor
unit’s internal refrigerant piping it is necessary to activate the
vacuum mode which will open required valves in the refrigerant
circuit so the vacuuming process or recharge of refrigerant can be
done properly.
To activate vacuum mode:
Activating the vacuum mode is done by operating the push buttons
BS* on the PCB (A1P) and reading the feedback from the 7‑segment
displays.
Operate the switches and push buttons with an insulated stick (such
as a closed ball-point pen) to avoid touching of live parts.
1
When the unit is powered on and not running, hold down the
BS1 pushbutton for 5 seconds.
Result:
You will reach the setting mode, the 7 segment display
will show '2 0 0'.
2
Press the BS2 button until you reach page
2–28
.
3
When
2–28
is reached, press the BS3 button once.
4
Change the setting to '
1
' by pressing the BS2 button once .
5
Push the BS3 button once