Daikin RXYQ120PYDNR [94/108] 2 1 procedure of adding refrigerant charging
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Daikin RXYQ120PYDNR [94/108] 2 1 procedure of adding refrigerant charging

Daikin RXYQ120PYDNR [94/108] 2 1 procedure of adding refrigerant charging
EDUS391000-N_a Installation
Installation of Outdoor Units 93
11-2-1 Procedure of Adding Refrigerant charging
1. Make sure the following works are complete in accordance with
the installation manual.
Piping work
Wiring work
Air tight test
Vacuum drying
Installation work for Branch Selector, indoor unit
2. Calculate the “additional charging amount” using “How to calculate
the additional refrigerant to be charged” in “6-5 Example of connec-
tion”. Be sure to note the additional charge amount on the refrig-
erant charge label.
3. Open the valve B (See the figure 30. The valve A,C and the liquid
pipe, suction gas pipe, HP/LP gas pipe, equalizer pipe shutoff
valves must be left closed), and charge the refrigerant of the “addi-
tional charging amount” from the liquid side shutout valve service
port.
(Refer to figure 30)
1. Measuring device
2. R410A tank (with siphon)
3. Charge hose
4. Equalizer pipe shutoff valve
5. HP/LP gas pipe shutoff valve
6. Suction gas shutoff valve
7. Liquid pipe shutoff valve
8. Refrigerant charge port
9. Valve A
10. Valve B
11. Valve C
12. Outside unit A
13. Outside unit B
14. To Branch Selector, indoor unit
15. Field pipings
16. Refrigerant flow
17. Shutoff valve
18. Service port
4. If the “additional charging amount” was charged fully, close the
valve B and go to step 6.
If the “additional charging amount” was not charged fully, close the
valve B and go to step 5.
5. Perform the refrigerant charging following [Automatic refrigerant
charging operation procedure] as shown below. And charge the
remaining refrigerant of the “additional charging amount”.
NOTE
• For performing the automatic refrigerant charging operation, the
push button on the PC-bord (A1) of outside unit are used. (See fig-
ure 29.)
And the refrigerant are charged from the refrigerant charge port via
the valve A. (See figure 31.) For operating the push button and
opening or closeing the valves, follow the procedure.
• During Automatic refrigerant charging operation, the system will
select charging mode (cooling mode or heating mode) by the
temperature condition as follows.
When charging in cooling mode, the system will stop operation
when the required amount of refrigerant is charged.
During charging in heating mode, a person must manually close
valve A and stop operation.
Beforehand, check the remaining refrigerant that is needed to
charge based on the “additional charging amount” in step 2 and
the charged amount in step 3.
• The refrigerant will be charged about 66 lb in one hour at outdoor
temp. 86°F DB (about 26 lb at outdoor temp. 32°F DB).
• During Automatic refrigerant charging operation, you can stop the
operation forcedly by pushing MODE button (BS1).
(Refer to figure 31)
1. Measuring device
2. R410A tank (with siphon)
3. Charge hose
4. Equalizer pipe shutoff valve
5. HP/LP gas pipe shutoff valve
6. Suction pipe shutoff valve
7. Liquid pipe shutoff valve
8. Refrigerant charge port
9. Valve A
10. Valve B
11. Valve C
12. Outside unit A
13. Outside unit B
14. To Branch Selector, indoor unit
15. Field pipings
16. Refrigerant flow when charging
17. Shutoff valve
18. Service port
19. The refrigerant will be charged about 66 lb in one hour at
outdoor temp. 86°FDB (26 lb at 32°FDB). (According to
outdoor temp. or the refrigerant amount in the tank, the
charging rate may speed up). If you need to speed up in
case of multi system, connect the refrigerant tanks to each
outside unit.
[Automatic refirgerant charging operation procedure]
NOTE
• The marks of LED mean as follows.
h : OFF i : ON j : Blinking ∗ : OFF, ON or Brinking
(1) Open the liquid pipe, suction gas pipe and HP/LP gas pipe shutoff
valves. (The valve A~C must be closed. See figure 31.)
(2) • Close the electrical components box (1) lid and all front panel
except on the electrical components box (1) side. (*1) And turn
the power to the outdoor unit and all connected Branch Selector,
indoor units. (*2)
• After H2P stop blinking (about 12 minutes after turning on the
power), check H2P is OFF.
If H2P is ON, check the malfunction code in the remote controller
of indoor unit and correct the malfunction in accordance with
[Remote controller display malfunction code] in chapter 11-2-2.
(3) Check the LED. And push the MODE button (BS1) once if the LED
displays is not as below.
(4) Push the TEST button (BS4) once. (The LED displays will change
as below.)
(5) Hold the TEST button (BS4) down for 5 seconds or more.
(The LED displays will change as below and fan of outside unit will
start rotation.)
(6) When the compressor start working and the LED displays change
any state in below (*3), go to “In case of cooling mode” or “In case
of heating mode” in accordance with the LED displays.
In case of cooling mode
(7) Push the TEST button (BS4) once within 5 minutes after proce-
dure (5) (*4) and close the all front panels (*5).
After that, open the valve A immediately (See figure 31) (*6) and
watch the remote controller display of indoor unit.
(8) If the remote controller display shows “PE” code (*7), ready to
close the valve A.
And go to procedure (9).
If the remote controller display shows other code, close the valve A
Outdoor temp. : 32˚F DB ~ 109˚F DB
Indoor temp. : 50˚F DB ~ 90˚F DB
Less than above range
Cooling mode
Heating mode
H1P H2P H3P H4P H5P H6P H7P
hhihhhh
H1P H2P H3P H4P H5P H6P H7P
iiiiiii
H1P H2P H3P H4P H5P H6P H7P
hjhhh
∗∗
H1P H2P H3P H4P H5P H6P H7P
jjjhihi
Go to “In case of
cooling mode”
jjhhihi
Go to “In case of
heating mode”

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