Toshiba MCY-MUG0401HSW-E Service Manual page 125

 Shut-off Valve unit Installation
When Shut-off Valve unit is installed , the allowable installation position differs depending on the total amount of
refrigerant. The installation position shall be determined according to the following formula.
/3 ≧ (m
◆
L +L
φ9.52 φ6.35
L ：Total length of φ9.52 liquid pipe between outdoor unit and Shut-off valve unit or indoor unit. [m]
φ9.52
L ：Total length of φ6.35 liquid pipe between 1st branching section and Shut-off Valve unit or indoor
φ6.35
unit. [m]
m : Total amount of refrigerant [kg]
c
*If the calculation indicates negative, replace it as 0.
Example: 060 type
Liquid Pipe
L1 9.52
L2 9.52
a1 9.52
a2 9.52
b 6.35
c1 6.35
c2 6.35
L = L1 + L2 + a1
φ9.52
L = b + c1
φ6.35
* Notice that liquid pipe [b] is included.
- 8) × 14
c
L2
a1
L1
a2
A
Indoor unit
A MMU-UP 0241HP*
B MMU-UP0181HP*
C MMU-UP0071MH*
Shut-off Valve unit
b
B
124
c1
c2
C