Precautions When Charging Refrigerant; To Determine The Additional Refrigerant Amount; To Determine The Complete Recharge Amount; To Charge Additional Refrigerant - Daikin Altherma 3 R F Installer's Reference Manual

8 | Piping installation

8.5.2 Precautions when charging refrigerant

8.5.3 To determine the additional refrigerant amount

8.5.4 To determine the complete recharge amount

8.5.5 To charge additional refrigerant

Installer reference guide
94
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
General safety precautions
▪
Preparation
WARNING
If the total refrigerant charge in the system is ≥1.84 kg (i.e. if the piping length is
≥27 m), you need to comply with the minimum floor area requirements for the
indoor unit. For more information, see
4
indoor unit" [
If the total liquid piping
length is...
≤10 m
>10 m
INFORMATION
Piping length is the one-way length of liquid piping.
INFORMATION
If a complete recharge is necessary, the total refrigerant charge is: the factory
refrigerant charge (see unit name plate) + the determined additional amount.
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.
CAUTION
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.
"7.1.3 Installation site requirements of the
59].
Do NOT add additional refrigerant.
R=(total length (m) of liquid piping⁠ – ⁠ 1 0 m)×0.020
R=Additional charge (kg) (rounded in units of
0.01 kg)
Then...
ERGA04~08EAV3(A) + EHVH04+08SU18+23EA6V
Daikin Altherma 3 R F
4P629090-1 – 2020.08