Toshiba SUPER MODULAR MULTI HFC R-410A - Manual (Page 30)

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Note 3: The minimum indoor floor area compared with
the amount of refrigerant is roughly as follows (when the
ceiling is 2.7 m high):
Total refrigerant amount
2. Free branching system
 Line branching system
 Header branching system
 Header branching after line branching
 Line branching after header branching
 Header branching after header branching
The above five branching systems are available to increase significantly the flexibility of refrigerant piping design.
Line
branching
system
Header
branching
system
Header
branching
after line
branching
Line
branching
after header
branching
Header
branching
after header
branching
Range below the
density limit of
0.3 kg/m
3
(countermeasures
not needed)
Range above the
density limit of
0.3 kg/m
3
(countermeasures
needed
Min. indoor floor ar
ea
Outdoor unit
Branching joint
Indoor unit
Remote
controller
Outdoor unit
Branching header
Indoor unit
Remote controller
Outdoor unit
Branching joint
Indoor unit
Remote
controller
Branching header
Outdoor unit
Branching
joint
Indoor unit
Remote
controller
Branching header
m 2
kg