Gree FGR20Pd/DNa-X Manual De Usuario página 15

(3) Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the
outdoor valve, as shown below.
3.4.2 Refrigerant Adding
(1) Refrigerant quantity of outdoor unit before delivery:
Model
Refrigerant Qty (kg)
NOTES!
① The refrigerant amount charged before delivery doesn't include the amount that needs to
be added to indoor units and the connection pipeline.
② Length of connection pipe is decided on site. Therefore the amount of additional
refrigerant shall be decided on site according to the dimension and length of
field-installed liquid pipe.
③ Record the amount of additional refrigerant for convenience of after-sales service.
(2) Calculation of the amount of additional refrigerant
Calculation method of the quantity of additional refrigerant (based on liquid pipe)
Quantity of additional refrigerant = ∑length of liquid pipe X quantity of additional refrigerant
per meter.
Φ22.2
0.35
First confirm that there is no leakage from the system. When compressor is not working,
charge additional R410a with specific amount to the unit through the filling opening of the liquid
pipe valve of the outdoor unit. If required amount cannot be quickly filled due to pressure increase
of the pipe, then set the unit in cooling startup and fill refrigerant from the low pressure check valve
of the outdoor unit.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
FGR20Pd/DNa-X(O)
6.4
Quantity of additional refrigerant per meter for liquid pipe（kg/m）
Φ19.05 Φ15.9
0.25 0.17
Fig.17
FGR25Pd/DNa-X(O)
8.0
Φ12.7
0.11
11
FGR30Pd/DNa-X(O)
9.5
Φ9.52 Φ6.35
0.054 0.022