Daikin VRVIII RXQ5P7W1B Installation Manual page 23

Adding refrigerant manually
If refrigerant is added manually, the refrigerant leak
detection function cannot be used during regular
inspection and maintenance after installation. If the
refrigerant leak detection function is needed, charge
refrigerant using the automatic refrigerant charging
function. (Refer to
procedure" on page 25.)
To avoid compressor breakdown, do not charge the refrigerant
more than the specified amount.
This outdoor unit is factory charged.
In case re-charge is required, refer to the nameplate of the unit. The
nameplate states the type of refrigerant and necessary amount.
1 Calculate how much refrigerant is to be added, refer to
calculate the additional refrigerant to be charged" on page 9
fill in the amount in the "Additional refrigerant charge label"
attached to the unit..
2 Add the refrigerant according to the following procedure.
Adding refrigerant (1)
When charging is done
Write the amount of added refrigerant on the servicing precautions
plate attached to the outdoor unit.
If all the refrigerant could not be added
NOTE
according to
unit at stand
missing
refrigerant (2): Outdoor unit is
Using another method could result in
breakage.
Do not perform the
Outdoor unit is operating"
working on the indoor units.
When performing
Outdoor unit is
operate as well as the outdoor unit.
Adding refrigerant (1): Outdoor unit at stand still
Open the valve C (valves A and B and the stop valves must be left
fully closed) and charge the refrigerant in liquid form via the liquid
side stop valve service port. See
R410A is a mixed refrigerant, so charging it as a gas will
cause the refrigerant composition to change, which may
prevent normal operation.
RX(Y)Q5~18P7W1B
VRVIII System air conditioner
4PW28161-1
"Automatic refrigerant charging
"How to
If not all the refrigerant can
be charged
Adding refrigerant (2)
Power on
Adding refrigerant
"Adding refrigerant (1): Outdoor
still", do not forget to add the
amount described in "Adding
operating".
"Adding refrigerant (2):
procedure while
"Adding refrigerant (2):
operating", the indoor units
figure 29.
Adding refrigerant (2): Outdoor unit is operating
Add refrigerant using the following procedure. See the service
precautions attached to the electric box lid on the outdoor unit for
details on the settings for adding refrigerant.
1. Close the electric box lid and turn on the power to all outdoor
units and indoor units in the refrigeration system.
2. Fully open the valve C and the gas line stop valve (the liquid line
stop valve and valve A and B must be left fully closed) and start
the additional refrigerant charge operation. See
3. While the unit is at standstill and under setting mode 2 (refer to
Field setting, "Setting the mode" on page
function "additional refrigerant charging operation" to
Then operation starts. The blinking H2P led indicates test
operation and the remote controller indicates
operation) and
and 4. When the specified amount of refrigerant is charged, push the
button. Then operation stops.
BS3 RETURN
The operation automatically stops within 30 minutes.
If the refrigerant charge cannot be finished within 30 minutes,
repeat step 2.
If the operation stops immediately after restart, there is a
possibility that the system is overcharged.
The refrigerant cannot be charged more than this amount.
3 After the refrigerant charge hose is removed, make sure to fully
open the liquid stop valve. Otherwise the piping may burst due to
blocked liquid.
4 After the refrigerant is charged, turn on the power for the indoor
units and for the outdoor unit.
figure
20), set the required
(external control).
Installation manual
29.
(ON).
ON
(test
18