Toshiba RBC-TWP101E Manuel D'installation page 8

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.
Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg) +
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)
SM224
SM280
EN
Indoor unit B
Outdoor unit
= A × (L – 28) + B × (a + b – 4)
Standard piping length
Main piping Branch piping
28 m
Indoor unit A
b
Branch Branch
piping piping
L
Main piping
Branch piping additional refrigerant amount (kg)
2 m
7
a
Additional refrigerant
amount per Meter (kg/m)
A
0.080
B
0.040