Daikin VRV 5 RXYA8A7Y1B Installer And User Manual page 118

19 | Charging refrigerant
Installer and user reference guide
118
INFORMATION
For final charge adjustment in the test laboratory, please contact your local 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
NOTICE
The refrigerant charge of the system must be less than 79.8 kg. This means that in
case the calculated total refrigerant charge is equal to or more than 79.8 kg you must
divide your multiple outdoor system into smaller independent systems, each
containing less than 79.8 kg refrigerant charge. For factory charge, refer to the unit
name plate.
NOTICE
The total refrigerant charge amount in the system MUST always be lower than
79.8 kg.
Formula:
R = [(X × Ø19.1) × 0.23 + (X
1
0.053 + (X × Ø6.4) × 0.020] + (A + B + C)
5
R Additional refrigerant to be charged [kg] (rounded off to one decimal place)
X Total length [m] of liquid piping size at Øa
1...5
A~C Parameters A~C (see below)
INFORMATION
▪
In case of a multi-outdoor-unit system, add the sum of the individual outdoor unit
charge factors.
▪
When using more than one SV unit, add the sum of the individual SV unit charge
factors.
▪ Parameter A: If the total indoor unit capacity connection ratio (CR)>100%,
charge an additional 0.5 kg of refrigerant per outdoor unit.
▪ Parameter B: Outdoor unit charge factors
Model
RYMA5
RXYA8~12
RXYA14
RXYA16
RXYA18
RXYA20
▪ Parameter C: Individual SV unit charge factors
Model
SV1A
SV4A
SV6A
4
label" [ 123].
× Ø15.9) × 0.16 + (X
2
"19.8 To fix the fluorinated
× Ø12.7) × 0.10 + (X
3 4
Parameter B
0 kg
1.2 kg
1.3 kg
4.3 kg
Parameter C
0.4 kg
0.5 kg
0.7 kg
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
× Ø9.5) ×