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5.4 Additional Refrigerant Charge Calculation
Although refrigerant has been Charged into this unit, it is required that additional refrigerant be
charged according to piping length.
A. Determine an additional refrigerant quantity according to the following procedure, and charge it
into the system.
B. Record the additional refrigerant quantity to facilitate service activities thereafter.
AVWW-54UCSA
1
Calculation Method of Additional Refrigerant Charge (W kg)
1.1 Additional Refrigerant Charge Calculation for Liquid Piping (W kg)
Take AVWW-54UCSA as an example to fill the following table.
Pipe Diameter(mm) Total Piping Length(m) Additional Charge(kg)
Total Piping Length
Additional Charge of this system
Pipe Diameter(mm) Total Piping Length(m) Additional Charge(kg)
Total Piping Length
2 Charging work
Charge the refrigerant R410A into the system according to the requirement of "installation manual".
3 Record of Additional Charge
Record the refrigerant charging quantity in order to facilitate maintenance and servicing activities.
Total Ref. Charge
This system
Additional Charge
Total Ref. charge of this system
Charging Time
year
Additional Charge of Refrigerant R410A
Additional Charge
Additional Charge
month
day
Table 1
Outdoor Unit
28
38
48
54
NOTE:
W
is outdoor unit ref. Charge before shipment.
0
2
Outdoor unit
Ref. Charge
before shipment
W
(kg)
0
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