Daikin VRV IV RXMLQ8T7Y1B Series - To Charge Refrigerant: Flow Chart

5 Installation
Installation and operation manual
16
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543426-1 – 2018.07
Metric piping. When using metric piping, replace the weight factors
in the formula by the ones from the following table:
Inch piping Metric piping
Piping Weight factor Piping Weight factor
Ø6.4mm 0.022 Ø6mm 0.018
Ø9.5mm 0.059 Ø10mm 0.065
Ø12.7mm 0.12 Ø12mm 0.097
Inch piping Metric piping
Piping Weight factor Piping Weight factor
Ø15.9mm 0.18 Ø15mm 0.16
Ø16mm 0.18
Ø19.1mm 0.26 Ø18mm 0.24
Ø22.2mm 0.37 Ø22mm 0.35
5.6.4 To charge refrigerant: Flow chart
For more information, see "5.6.5To charge refrigerant"on page17.
Pre-charging refrigerant
Step 1
Calculate additional refrigerant charge amount: R (kg)
Refrigerant overcharge happened, recover
refrigerant to reach R=Q
Step 2
• Open valves C and B to the liquid line
• Execute pre-charging amount: Q (kg)
Step 3a
• Close valves C and B
• Charging is finished
• Fill in the amount on the additional
refrigerant charge label
• Go to test run
Step 3b
Close valves C and B
R=Q R>QR<Q
Continued on next page >>
p
<
p
>
R410AN2
C
A B