Additional Refrigerant Amount - Toshiba RBC-TRP100E Installation Manual

Branch Kit 1:3

Additional Refrigerant Amount

<RAV-SM1603AT(Z)(ZG)-E>
Indoor unit C
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) +
α:
Additional refrigerant amount per meter of actual main piping length (kg)
γ:
Additional refrigerant amount per meter of actual branch piping length (kg)
L: Actual length of main piping (m)
a, b, c: Actual length of branch piping (m)
L
DI 6HP Ø9.5
Indoor unit B
Branch pipe
c
L
Main pipe
Branch piping additional refrigerant amount (kg)
= {α × (L – 28)} + {γ × (a + b + c – 6)}
Connecting pipe diameter
a b
Ø6.4 Ø6.4
Indoor unit A
Branch pipe
b
Branch pipe
a
Distributor
Additional refrigerant amount per
α
c
Ø6.4 0.04
10
H
Meter (kg/m)
β γ
–
0.02
EN
EN