Publicidad
Idiomas disponibles
Idiomas disponibles
Note on Adding Refrigerant
Some systems require additional charging depending on pipe lengths. The standard pipe length varies
according to local regulations. For example, in North America, the standard pipe length is 7.5m (25').
In other areas, the standard pipe length is 5m (16'). The refrigerant should be charged from the service
port on the outdoor unit's low pressure valve. The additional refrigerant to be charged can be
calculated using the following formula:
Connective Pipe
Air Purging
Length (m)
< Standard pipe length Vacuum Pump
> Standard pipe
Vacuum Pump
length
For R290 refrigerant unit, the total amount of refrigerant to be charged is no more than:
387g(<=9000Btu/h), 447g(>9000Btu/h and <=12000Btu/h), 547g(>12000Btu/h and <=18000Btu/h),
632g(>18000Btu/h and <=24000Btu/h).
CAUTION
DO NOT
Page 33
ADDITIONAL REFRIGERANT PER PIPE LENGTH
Method
Liquid Side: Ø 6.35 (ø 0.25")
(Pipe length – standard length) x 12g/m
(Pipe length – standard length) x 0.13oZ/ft
(Pipe length – standard length) x 10g/m
(Pipe length – standard length) x 0.10oZ/ft
(Pipe length – standard length) x 15g/m
(Pipe length – standard length) x 0.16oZ/ft
(Pipe length – standard length) x 20g/m
(Pipe length – standard length) x 0.21oZ/ft
mix refrigerant types.
Additional Refrigerant
N/A
R32:
(Pipe length – standard length) x 0.26oZ/ft
R290:
(Pipe length – standard length) x 0.19oZ/ft
R410A:
(Pipe length – standard length) x 30g/m
(Pipe length – standard length) x 0.32oZ/ft
R22:
(Pipe length – standard length) x 40g/m
(Pipe length – standard length) x 0.42oZ/ft
Liquid Side: Ø 9.52 (ø 0.375")
R32:
(Pipe length – standard length) x 24g/m
R290:
(Pipe length – standard length) x 18g/m
R410A:
R22:
Publicidad
