Daikin VRV III RXYQ5-54PY1 Service Manual page 163

Test Operation
3. Open the valve C (See the figure 31. The valve A, B and the liquid and gas side shutout
4. Perform the refrigerant charging operation following [Refrigerant charging operation
Note:
The refrigerant will be charged about 22kg in one hour at outdoor temp. 30°C DB (6kg at 0°C
DB).
If you need to speedup in case of multi system, connect the refrigerant cylinders to each
outdoor unit as shown in the figure 33.
152
valve must be left closed), and charge the refrigerant of the "additional charging amount"
from the liquid side shutout valve service port.
If the "additional charging amount" was charged fully, close the valve C and go to step 5.
If the "additional charging amount" was not charged fully, go to step 4.
Measuring device
procedure] as shown in page 153, and charge the remaining refrigerant of the "additional
charging amount". For performing the refrigerant charging operation the push button on the
PC-board (A1P) of outdoor unit (Incase of multi system master unit) are use. (See the figure
32) In addition, the refrigerant are charged from the refrigerant charge port via the valve A.
(See the figure 33)
For operating the push button and opening and closing the valve, follow the work procedure.
EL. COMPO. BOX lid
Liquid side
Charge hose
shutoff valve
Gas side
shutoff valve
Shutoff valve
service port
Measuring
device
R-410A cylinder
(with siphon)
Liquid side
shutoff valve
Gus side
Charge hose
shutoff valve
shutoff valve
service port
Valve B
Valve C
Valve A
R-410A cylinder
(with siphon)
fig 31
EL. COMPO. BOX lid
LED(H1~8P)
Inspection door
Push button
Label
(BS1~5)
"Service Precaution"
Pipe intake
fig 32
Refrigerant
charge port
In case of multi system if you need to speedup.
Outdoor Outdoor
unit unit
valve B
valve C
valve A
:
Field piping
:
Refrigerant flow
fig 33
Outdoor unit Outdoor unit
Refrigerant
charg port
To indoor unit
Field pipings
Refrigerant flow
Lift the protruding
part to open the cover
Inspection door
Outdoor
unit
valve A
To indoor unit
Test Operation
Si34-601A