Daikin Sky Air Advance Series - Preventing Outdoor Unit Falling

7 Charging refrigerant
Installation manual
14
RZASG100~140MUV/Y
Sky Air Advance-series
4P734658-1 – 2023.08
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate
the defrosting process other than those recommended
by the manufacturer.
▪ Be aware that the refrigerant inside the system is
odourless.
7.3 Charging additional refrigerant
7.3.1 To determine the additional refrigerant
amount
To determine if adding additional refrigerant is necessary
If Then
(L1+L2+L3+L4+L5+L6+L7)≤
30m (chargeless length)
You do not have to add
additional refrigerant.
(L1+L2+L3+L4+L5+L6+L7)>
30m (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: 30~40m 40~50m
R: 0.35kg 0.7kg
To determine the additional refrigerant amount (R in kg) (in
case of twin, triple and double twin)
1 Determine R1 and R2.
If Then
G1>30m Use the table below to determine
R1
G1≤30m
(and G1+G2>30m)
R1=0.0kg.
Use the table below to determine
R2
Length (total length of liquid piping−30m)
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 1.4kg
R2: 0.2kg 0.4kg 0.6kg 0.8kg 1kg
(a)
(a)
Only for RZASG100+125.
2 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)
RZASG100
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=0.35kg
R2 Length=G2=12m
=> R2=0.4kg
3 R R=R1+R2=0.35+0.4=0.75kg
Layout Additional refrigerant amount (R)
L2=15 m
(Ø6.4 mm)
L3=12 m
(Ø6.4 mm)
L4=17 m
(Ø6.4 mm)
L1=5 m (Ø9.5 mm)
RZASG125
Case: Triple, standard liquid pipe size
1 G1 Total Ø9.5 => G1=5m
G2 Total Ø6.4 => G2=15+12+17=44m
2 Case: G1≤30m (and G1+G2>30m)
R1 R1=0.0kg
R2 Length=G1+G2−30m =
5+44−30=19m
=> R2=0.4kg
3 R R=R1+R2=0.0+0.4=0.4kg
7.3.2 Charging refrigerant: Setup
See "5.2.1Checking refrigerant piping: Setup"[410].
7.3.3 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.
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.
7.4 Completely recharging refrigerant
7.4.1 To determine the complete recharge
amount
To determine the complete recharge amount (kg)
Model Length
(a)
5~30m 30~40m 40~50m
RZASG100-125 2.6kg 2.95kg 3.3kg
RZASG140 2.9kg 3.25kg 3.6kg
(a)
Length=L1 (pair); L1+L2 (twin, triple); L1+L2+L4 (double twin)
7.4.2 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.