ENGLISH-37
02
INST
ALLA
TION
Selecting additional refrigerant charge
❋
Basic charge
The basic amount of refrigerant for outdoor unit charged in factory is:
Outdoor unit (Series)
Factory charge(kg)
AE090RXEDEG
1.4
AE090RXEDGG
❋
Charge additional refrigerant according to the total length of the pipe.
Each factory charging values are determined according to basic pipe length 15 m.
When extra pipe length are required, additional charging works must be implemented as describes below.
Refrigerant Charging
❋
Additional charging amount is determined based on liquid pipe specifications.
Outdoor unit of liquid
ø6.35
Additional charging (g)
20 g/m
Additional Charge(g) = (L1-15)*20
• L1: Total length of liquid pipe Ø 6.35(m)_Model :
✴✴
090
✴✴
NOTE
Ex) Total length of liquid pipe =20 m
Φ 6.35 = (20m-15m) x 20g/m = 100 g (Model :
✴✴
090
✴✴
)
Precautions on adding the R-32 refrigerant
In addition to the conventional charging procedure,. the following requirements shall be kept.
f
Make sure that contamination by other refrigerants does not occur for charging.
f
To minimize the amount of refrigerant, keep the hoses and lines as short as possible.
f
The cylinders shall be kept upright.
f
Make sure that the refrigeration system is earthed before charging.
f
Label the system after charging, if necessary.
f
Extreme care is required not to overcharge the system.
f
Before recharging, the pressure shall be checked with nitrogen blowing.
f
After charging, check for leakage before commissioning.
f
Be sure to check for leakage before leaving the work area.
