To Determine The Additional Refrigerant Amount - Daikin RXYSA4A7V1B Installer And User Manual

19 | Charging refrigerant

19.4 To determine the additional refrigerant amount

Installer and user reference guide
96
WARNING
The maximum allowable total refrigerant amount is determined based on the
smallest room being served by the system.
See "3.1.2 System layout
total refrigerant amount.
INFORMATION
For final charge adjustment in a test laboratory, contact your dealer.
INFORMATION
Note down the amount of additional refrigerant that is calculated here, for later use
on the additional refrigerant charge label. See
greenhouse gases
Formula:
R=[(X ×Ø9.5)×0.053+(X
1
R Additional refrigerant to be charged [in kg and rounded off to 1 decimal place]
X Total length [m] of liquid piping size at Øa
1...2
Metric piping. When using metric piping, replace the weight factors in the formula
by the ones from the following table:
Inch piping
Piping
Ø6.4 mm
Ø9.5 mm
Connection ratio requirements. When selecting indoor units, the connection ratio
must comply with the following requirements. For more information, see the
technical engineering data.
Indoor units
VRV DX
(a)
Total CR = Total indoor unit capacity connection ratio
4
requirements" [
4
label" [ 99].
×Ø6.4)×0.020]
2
Weight factor
0.020
0.053
19] to determine the maximum allowable
"19.7 To fix the fluorinated
Metric piping
Piping Weight factor
Ø6 mm
Ø10 mm
(a)
Total CR
50~130%
VRV 5-S system air conditioner
4P600330-1A – 2020.07
0.016
0.058
RXYSA4~6A7V/Y1B