Daikin RXYLQ28T7Y1B handleiding
Handleiding
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14 Piping installation
Installation and operation manual
24
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543426-1C – 2025.01
14.4.5 To charge refrigerant
Follow the steps as described below.
Pre-charging refrigerant
1 Calculate the additional amount of refrigerant to be added using
the formula mentioned in "14.4.3 To determine the additional
refrigerant amount"[422].
2 The first 10 kg of additional refrigerant can be pre-charged
without outdoor unit operation.
If Then
The additional refrigerant amount
is smaller than 10kg
Perform steps 2+3.
The additional refrigerant charge
is larger than 10 kg
Perform steps 2~8.
3 Pre-charging can be done without compressor operation, by
connecting the refrigerant bottle to the service ports of the liquid
and equalising stop valves (open valve B). Make sure that valve
A and all outdoor unit stop valves are closed.
NOTICE
During pre-charging, the refrigerant is charged through the
liquid line. Close valve A and disconnect the manifold from
the gas line.
p
<
p
>
R410AN2
C
b c e
a
g
f
d
A B
a Pressure reducing valve
b Nitrogen
c Weighing scales
d Refrigerant R410A tank (siphon system)
e Vacuum pump
f Liquid line stop valve
g Gas line stop valve
A Valve A
B Valve B
C Valve C
4 Do one of the following:
If Then
4a The calculated additional
refrigerant amount is reached
by above pre-charging
procedure
Close valves C and B and
disconnect the manifold
connection to the liquid line.
4b The total amount of
refrigerant could not be
charged by pre-charging
Close valves C and B,
disconnect the manifold
connection to the liquid line,
and perform steps 4~8.
INFORMATION
If the total additional refrigerant amount was reached in
step 4 (by pre-charging only), record the amount of
refrigerant that was added on the additional refrigerant
charge label provided with the unit and attach it on the
back side of the front panel.
Perform the test procedure as described in
"17Commissioning"[431].
Charging refrigerant
p
<
p
>
R410A
a c
d
b
A
a Weighing scales
b Refrigerant R410A tank (siphon system)
c Vacuum pump
d Refrigerant charge port
A Valve A
INFORMATION
For a multi outdoor unit system, it is not required to
connect all charge ports to a refrigerant tank.
The refrigerant will be charged with ±22 kg in 1 hour time
at an outdoor temperature of 30°CDB or with ±6kg at an
outdoor temperature of 0°CDB.
If you need to speed up in case of a multiple outdoor
system, connect the refrigerant tanks to each outdoor unit.
NOTICE
▪ 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 13.9N•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.
5 Proceed with the manual charge.
INFORMATION
After charging refrigerant:
▪ Record the additional refrigerant amount on the
refrigerant label provided with the unit and attach it to
the backside of the front panel.
▪ Perform the test procedure described in
"17Commissioning"[431].
14.4.6 Step 6: To manually charge refrigerant
INFORMATION
The manual refrigerant charge operation will automatically
stop within 30 minutes. If charging is not completed after
30 minutes, perform the additional refrigerant charging
operation again.
14.4.7 Checks after charging refrigerant
▪ Are all stop valves open?
▪ Is the amount of refrigerant, that has been added, recorded on the
refrigerant charge label?
NOTICE
Make sure to open all stop valves after (pre-) charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
14.4.8 To fix the fluorinated greenhouse gases
label
1 Fill in the label as follows:
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Productinformatie
| Merk | Daikin |
| Model | RXYLQ28T7Y1B |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6679 MB |
