EMRQ8~16ABY1
Daikin Altherma outdoor unit
4P501819-1 – 2017.08
Installation manual
24
Charging method
As explained during vacuum drying method, once vacuum drying is
finished, additional refrigerant charging can start.
Follow the steps as described below.
1
Calculate the amount of refrigerant to be added using the
formula mentioned in
"13.3. Calculating the additional refrigerant
The first 10 kg of refrigerant can be charged without outdoor unit
operation. If the additional refrigerant amount is smaller than
10 kg, perform the precharging procedure as explained in step
below. If the additional refrigerant charge is larger than 10 kg,
perform step
and perform step
till the end of the procedure.
2
Precharging can be done without compressor running by
connecting the refrigerant bottle only to the liquid stop valve.
Make sure that the stop valves are closed:
3
If the total amount of refrigerant could not be charged by
precharging, then connect the refrigerant bottle to the refrigerant
charging port as described in the figure above.
4
Make sure to open the discharge gas pipe stop valve and liquid
pipe stop valve of the outdoor unit. Keep the suction gas stop
valved of the outdoor unit ALWAYS closed. Refer to
5
Turn on the power of the indoor unit and outdoor unit.
Take all the precautions mentioned in
into account.
To be able to do this operation, the outdoor unit should be set in
mode 2. Refer to
"Field settings by push buttons" on page 26
for
further explanation on how to do the necessary settings.
6
Push the
BS1 MODE
button for 5 sec, the H1P LED is on
w
.
7
Push the
BS2 SET
button 20 times until following LED
combination is reached:
8
Push the
BS3 RETURN
button to confirm setting 2-20 above.
9
Push the
BS2 SET
button to change the charge mode from
OFF
(OFF) to
ON
(ON). LED indication should change as follows
10
Push the
BS3 RETURN
button and the setting is defined.
11
Push the
BS3 RETURN
button again, and the refrigerant
charging operation will start.
12
After charging the specified quantity of refrigerant, press the
BS3 RETURN
button to stop the operation.
Checks after adding refrigerant
■
Are the stop valves for liquid and discharge open?
■
Is the amount of refrigerant, that has been added, recorded on
the refrigerant charge label?
1
Pressure reducing valve
2
Nitrogen
3
Refrigerant R410A tank (siphon system)
4
Measuring instrument
5
Vacuum pump
6
Gas pipe stop valve (not used)
7
Outdoor unit
8
Liquid pipe stop valve
9
Indoor unit(s)
10
Charge hose
11
Refrigerant charge port
12
Discharge pipe stop valve
Valve
Stop valve service port
If the suction stop valve should remain closed at all
times.
VAC
U
8
6
1
2
3
4
5
8
11
12
7
9
9
9
12
H1P
H2P
H3P
H4P
H5P
H6P
H7P
w x w x w x
x
H1P
H2P
H3P
H4P
H5P
H6P
H7P
OFF
(a)
(a) This setting = factory setting
w x
x
x
x
x c
ON
w x
x
x
x c x
NOTE
The operation will automatically stop within 30
minutes. If charging is not completed after 30 minutes,
set and perform the additional refrigerant charging
operation again.
■
Make sure to open the stop valves after charging the
refrigerant but keep the suction stop valve closed at
all times.
■
Operating with the stop valves closed will damage the
compressor.
4PEN501819-1.book Page 24 Wednesday, September 13, 2017 12:52 PM
