Handleiding
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6 Installation
Installer reference guide
16
RZQG71L9V1L + RZQG71~125L8Y1L + RZQG140L7Y1L
Split system air conditioners
4P473074-1 – 2017.03
NOTICE
Use this vacuum pump for R410A exclusively. Using the
same pump for other refrigerants may damage the pump
and the unit.
6.5.3 Checking refrigerant piping: Setup
a
c
f
b d e
R410A
a Pressure gauge
b Nitrogen
c Refrigerant
d Weighing machine
e Vacuum pump
f Stop valve
6.5.4 To check for leaks
NOTICE
Do NOT exceed the unit's maximum working pressure (see
"PS High" on the unit name plate).
NOTICE
Make sure to use a recommended bubble test solution
from your wholesaler. Do not use soap water, which may
cause cracking of flare nuts (soap water may contain salt,
which absorbs moisture that will freeze when the piping
gets cold), and/or lead to corrosion of flared joints (soap
water may contain ammonia which causes a corrosive
effect between the brass flare nut and the copper flare).
1 Charge the system with nitrogen gas up to a gauge pressure of
at least 200 kPa (2 bar). It is recommended to pressurize to
3000kPa (30bar) in order to detect small leaks.
2 Check for leaks by applying the bubble test solution to all
connections.
3 Discharge all nitrogen gas.
INFORMATION
After opening the stop valve, it is possible that the pressure
in the refrigerant piping does NOT increase. This might be
caused by e.g. the closed state of the expansion valve in
the outdoor unit circuit, but does NOT present any problem
for correct operation of the unit.
6.5.5 To perform vacuum drying
1 Vacuum the system until the pressure on the manifold indicates
−0.1MPa (−1bar).
2 Leave as is for 4-5minutes and check the pressure:
If the pressure… Then…
Does not change There is no moisture in the
system. This procedure is
finished.
Increases There is moisture in the
system. Go to the next step.
3 Evacuate for at least 2 hours to a pressure on the manifold of
−0.1MPa (−1bar).
4 After turning OFF the pump, check the pressure for at least
1hour.
5 If you do NOT reach the target vacuum or cannot maintain the
vacuum for 1hour, do the following:
▪ Check for leaks again.
▪ Perform vacuum drying again.
NOTICE
Make sure to open the stop valves after installing the
refrigerant piping and performing vacuum drying. Running
the system with the stop valves closed may break the
compressor.
6.6 Charging refrigerant
6.6.1 About charging refrigerant
The outdoor unit is factory charged with refrigerant, but in some
cases the following might be necessary:
What When
Charging additional refrigerant When the total liquid piping
length is more than specified
(see later).
Completely recharging refrigerant Example:
▪ When relocating the system.
▪ After a leak.
When piping length is <5 m, a complete recharge of the unit is
required.
Charging additional refrigerant
Before charging additional refrigerant, make sure the outdoor unit's
external refrigerant piping is checked (leak test, vacuum drying).
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 The system is pumped down.
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.
Bekijk gratis de handleiding van Daikin RZQG100L8Y1L, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | RZQG100L8Y1L |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 5217 MB |
