7
EN
Branch Kit 1:2
Additional Refrigerant Amount
<RAV-SM2244AT8, SM2804AT8 series>
Formula for Calculating Additional Refrigerant Amount
Do not remove the refrigerant even if the additional refrigerant amount becomes minus
result as a result of calculations by the following formula and operate the air conditioner as it
is.
A:
Additional refrigerant amount per meter of actual main piping length (kg)
B:
Additional refrigerant amount per meter of actual branch piping length (kg)
L:
Actual length of main piping (m)
a, b: Actual length of branch piping (m)
Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg) +
Branch piping additional refrigerant amount (kg)
= A × (L – 28) + B × (a + b – 4)
Standard piping length
Additional refrigerant
amount per Meter (kg/m)
Main piping
Branch piping
A
B
SM224
SM280
28 m
2 m
0.080
0.040
a
L
b
Indoor unit B
Indoor unit A
Outdoor unit
Branch
piping
Branch
piping
Main piping
Summary of Contents for RBC-TWP101E
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