18
|
Piping installation
Installer and user reference guide
100
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
8
Activate outdoor unit setting [2‑20]=1 to start manual refrigerant charge
mode. Refer to
"20.2.8 Mode 2: Field settings"
122] for details.
Result:
The unit will start operation.
9
Valve A can be opened. Charging of remaining additional refrigerant can be
done.
10
When the remaining calculated additional refrigerant amount is added, close
valve A and push BS3 to stop the manual refrigerant charging procedure.
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.
11
Perform the test procedure as described in
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
INFORMATION
Aborting the manual refrigerant charge is possible by pushing BS3. The unit will stop
and return to idle condition.
18.5.5 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.
18.5.6 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 Quantity of fluorinated greenhouse gases
of the total refrigerant charge
expressed as tonnes CO
2
equivalent.
f
GWP = Global warming potential
