Precautions When Charging Refrigerant; To Determine The Additional Refrigerant Amount - Daikin Siesta AZQS125B8V1B Installer's Reference Manual

6 Installation
INFORMATION
Depending on the units and/or the installation conditions, it
might be necessary to connect electrical wiring before you
can charge refrigerant.
Typical workflow – Charging additional refrigerant typically consists
of the following stages:
1 Determining if and how much you have to charge additionally.
2 If necessary, charging additional refrigerant.
3 Filling in the fluorinated greenhouse gases label, and fixing it to
the inside of the outdoor unit.
Completely recharging refrigerant
Before completely recharging refrigerant, make sure the following is
done:
1 All refrigerant is recovered from the system.
2 The outdoor unit's external refrigerant piping is checked (leak
test, vacuum drying).
3 Vacuum drying on the outdoor unit's internal refrigerant piping is
performed.
NOTICE
Before completely recharging, perform vacuum drying on
the outdoor unit's internal refrigerant piping as well. To do
so, use the internal service port of the outdoor unit
(between the heat exchanger and the 4‑way valve). Do
NOT use the service ports of the stop valves, because
vacuum drying cannot be performed properly from these
ports.
WARNING
Some sections of the refrigerant circuit may be isolated
from other sections caused by components with specific
functions (e.g. valves). The refrigerant circuit therefore
features additional service ports for vacuuming, pressure
relief or pressurizing the circuit.
In case it is required to perform brazing on the unit, ensure
that there is no pressure remaining inside the unit. Internal
pressures need to be released with ALL the service ports
indicated on the figures below opened. The location is
depending on model type.
AZQS140_V1
a
b
c
Installer reference guide
16
AZQS100+125_V1
a
b
c
AZQS140_Y1
a
b
c
a Internal service port
b Stop valve with service port (liquid)
c Stop valve with service port (gas)
Typical workflow – Completely recharging refrigerant typically
consists of the following stages:
1 Determining how much refrigerant to charge.
2 Charging refrigerant.
3 Filling in the fluorinated greenhouse gases label, and fixing it to
the inside of the outdoor unit.
6.6.2

Precautions when charging refrigerant

INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
6.6.3 To determine the additional refrigerant
amount
To determine if adding additional refrigerant is necessary
If
L1≤30 m (chargeless length)
L1>30 m
INFORMATION
Piping length is the one-way length of liquid piping.
To determine the additional refrigerant amount (R in kg)
30~40 m
R: 0.5 kg
AZQS100~140B8V1B + AZQS100~140B7Y1B
AZQS100+125_Y1
a
b
c
Then
You do not have to add
additional refrigerant.
You must add additional
refrigerant.
For future servicing, encircle the
selected amount in the tables
below.
L1 (m)
40~50 m
1.0 kg
Split system air conditioners
4P385529-1C – 2019.04