Daikin VRV III RXYQ-PY1K, Руководство по установке, Страница: 21 / 34

RXYQ8~1 RXYQ8~12P7YLK
VRVIII System air conditioner
4PW41760-1
Installation manual
18
11.4. Additional refrigerant charge
There are two ways to charge refrigerant. Use the selected method
following the described procedure below.
■
Adding refrigerant using leak detection function.
Refer to
"1 Adding refrigerant using leak detection function (for
RXYQ_Y1K units only)" on page 19
■
Adding refrigerant without using leak detection function.
Refer to
"2 Adding refrigerant without using leak detection
function" on page 21
Follow the procedures below.
Adding refrigerant using the automatic refrigerant charging
function is recommended.
If refrigerant is added manually, without using the
automatic refrigerant charging function, the refrigerant leak
detection function can not be used.
■
When charging a system, charging over the
permissible quantity can cause liquid hammer.
■
Always use protective gloves and protect your eyes
when charging refrigerant.
■
When the refrigerant charging procedure is done or
when pausing, close the valve of the refrigerant tank
immediately. If the tank is left with the valve open, the
amount of refrigerant which is properly charged may
get off point. More refrigerant may be charged by any
remaining pressure after the unit has stopped.
Electric shock warning
■
Close the electric box lid before turning on the main
power.
■
Perform the settings on the circuit board (A1P) of the
outdoor unit and check the LED display after the
power is on via the service lid which is in the lid of the
electric box.
Operate switches with an insulated
stick (such as a ball-point pen) to
avoid touching the life parts.
Make sure to re-attach the
inspection cover into the switch box cover after the job
is finished.
■
If the power of some units is turned off, the charging
procedure can not be finished properly.
■
In case of a multiple outdoor system, turn on the
power of all outdoor units.
■
Make sure to turn ON the power 6 hours before
starting the operation. This is necessary to warm the
crankcase by the electric heater.
■
If operation is performed within 12 minutes after the
indoor and outdoor units are turned on, the H2P-LED
will be lit and the compressor will not operate.
NOTE
■
See "11.2. Stop valve operation procedure" on
page 17 for details on how to handle stop valves.
■
The refrigerant charging port is connected to the
piping inside the unit.
The unit’s internal piping is already factory
charged with refrigerant, so be careful when
connecting the charge hose.
■
After adding the refrigerant, do not forget to close
the lid of the refrigerant charging port.
The tightening torque for the lid is 11.5 to
13.9 N•m.
■
In order to ensure uniform refrigerant distribution,
it may take the compressor ±10 minutes to start
up after the unit has started operation. This is not
a malfunction.
■
Make sure to perform the check operation after
installation. Otherwise the malfunction code "U3"
will be displayed and normal operation can not be
performed.
Failing to perform a check for wrong wiring could
result in a abnormal operation.
Performance may drop due to a wrong judgement
of piping length.