Daikin EHVZ04S18EA6V, Installer'S Reference Manual

Page: 82 / 272

8 | Piping installation
Installer reference guide
82
ERGA04~08EA + 08S18+23EA
Daikin Altherma 3 R F
4P629093-1A – 2021.11
If the total liquid piping
length is…
Then…
≤10 m Do NOT add additional refrigerant.
>10 m R=(total length (m) of liquid piping⁠–⁠10 m)×0.020
R=Additional charge (kg) (rounded in units of
0.01 kg)
INFORMATION
Piping length is the one-way length of liquid piping.
8.4.4 To determine the complete recharge amount
INFORMATION
If a complete recharge is necessary, the total refrigerant charge is: the factory
refrigerant charge (see unit name plate) + the determined additional amount.
8.4.5 To charge additional refrigerant
WARNING
▪
Only use R32 as refrigerant. Other substances may cause explosions and
accidents.
▪
R32 contains fluorinated greenhouse gases. Its global warming potential (GWP)
value is 675. Do NOT vent these gases into the atmosphere.
▪
When charging refrigerant, ALWAYS use protective gloves and safety glasses.
NOTICE
To avoid compressor breakdown, do NOT charge more than the specified amount of
refrigerant.
Prerequisite: Before charging refrigerant, make sure the refrigerant piping is
connected and checked (leak test and vacuum drying).
1 Connect the refrigerant cylinder to the service port.
2 Charge the additional refrigerant amount.
3 Open the gas stop valve.
If pump down is needed in case of dismantling or relocating the system, see
"15.2 To pump down" [
4
241] for more details.
8.4.6 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