6 Installation
Installer and user reference guide
28
SERHQ020~0 SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508020-1A – 2018.01
However, the refrigerant leak detection function cannot be used
before completing the refrigerant charging operation and the
judgement of the initial amount of refrigerant by performing the test
operation again.
Overcharging judgement procedure
1
Close all front panels except the electrical component box front
panel and the lid on the side of the electrical component box.
2
Turn on the power to the outdoor unit and all connected indoor
units.
3
Press BS1 once so the H1P LED is off.
4
Press and hold BS4 down for 5 seconds.
Result:
The system will start to operate.
5
Close all front panels.
Result:
After operating for 40 minutes, operation will stop
automatically.
6
After the system has stopped operating, check the user
interface display.
7
If
,
or
is displayed on the user interface as a result of
the overcharging judgement procedure, recover 20% of the
charged amount of refrigerant and perform this procedure
again.
8
When no more overcharging of refrigerant is detected, start
automatic refrigerant charging from
charge refrigerant" on page 25
6.7.7
To input the additional refrigerant charge
weight
Availability of the leak detection function feature requires input of the
additional refrigerant charge amount immediately after finishing
automatic charging. The input must be executed before performing
the test operation.
NOTICE
If a wrong value is input for the additional charged
refrigerant weight, the accuracy of the leak detection
function will decrease.
Procedure
1
Close the electrical component box lid and all front panels
except the one on the side of the electrical component box.
2
Press and hold BS1 for 5 seconds to enter setting mode 2.
Result:
The H1P LED is on.
3
Press BS2 14 times. The LED display will be as follows.
4
Press BS3 to confirm.
Result:
LEDs will be blinking in function of the last entered
setting (factory setting = 0 kg).
5
Enter the weighed and already recorded amount of additional
refrigerant charge (not the total amount of refrigerant present in
the system) by selecting the corresponding LED display. Press
BS2 to scroll through the possible LED combinations until the
LED combination corresponds to the weight of additional
refrigerant charge you must input.
6
Press BS3 to select the required input and press the button
again to confirm the input into the PCB.
▪ Possible LED combinations in function of weight of additional
refrigerant charge (= x) to input
Value number
Weight (kg)
LEDs
0
x=0
1
0<x<5
Value number
Weight (kg)
LEDs
2
5≤x<10
3
10≤x<15
4
15≤x<20
5
20≤x<25
6
25≤x<30
7
30≤x<35
8
35≤x<40
9
40≤x<45
10
45≤x<50
11
50≤x<55
12
55≤x<60
13
60≤x<65
14
65≤x<70
15
70≤x<75
16
75≤x<80
17
80≤x<85
18
85≤x<90
19
90≤x<95
20
95≤x<100
21
100≤x
7
Press BS1 to return to setting mode 1 (= initial state).
8
Perform a test operation as described in
run of the outdoor unit" on page 45
.
INFORMATION
If you get confused in the middle of the process, push BS1.
Then it returns to setting mode 1 (H1P is off).
9
Resume the input procedure from step 2 onwards.
6.7.8
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.
6.7.9
To fix the fluorinated greenhouse gases
label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a
.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Greenhouse gas emissions
of the total refrigerant charge
expressed as tonnes CO
2
equivalent
f
GWP = Global warming potential
