Mitsubishi Electric PURY-P200 Service Handbook page 41

1. Line-branch method
[16 branches or less (the use of only the main BC controller or standard BC controller)]
Outdoor unit
Total piping length
Farthest piping length
Between outdoor unit - BC controller
Between BC controller and indoor unit
Between indoor unit
and outdoor unit
Between indoor unit and BC controller
Between indoor units
Note 1: Use the figures in the parentheses if the capacity of the connected indoor units is P200 type or above.
Note 2: Refer to the graph below for restrictions on refrigerant piping length when the total piping length exceeds 300 m.
Note 3: Refer to the graph below for restrictions on refrigerant piping length when the piping length between the BC
controller and the farthest indoor unit exceeds 40 m. (except P250-type indoor units)
Note 4: When indoor units of P200 type or above are connected, neither branch joints nor branch headers can be used.
Note 5: Do not connect P200- or P250-type indoor units and other types of indoor units at the same pipe end connection.
• Restrictions on piping length
400
350
300
250
200
30 40 50
Distance between outdoor unit and
110 m or less
A
BC controller
a
Junction
Indoor unit
pipe
(option)
Indoor unit
(P141~P250 types: 2-line merge)
Item
Outdoor unit above
Outdoor unit below
60 70 80 90 100 110
BC controller (m)
- 38 -
40 m or less
Branch pipe (for Y-series)
CMY-Y102S-G
b
B
c
Indoor unit Indoor unit
Maximum of 3 units per branch joint
Total capacity of P140 or less
(All units connected to the same
branch joint must be in the same mode.)
Piping sections
A + B + a + b + c + d + e
A + e
(175 m equivalent length or less)
A
e
H
H'
h1 15 m or less (10 m or less) (Note 1)
h2 15 m or less (10 m or less) (Note 1)
• Height difference and branch piping length between
BC controller and indoor unit. (A)
70
60
50
40
30
20
10
0
0 5
Height difference between main BC controller and
farthest indoor unit (m)
e
d
Indoor unit
Allowable value
300 m less (Note 2)
150 m or less
110 m or less
40 m or less (Note 3)
50 m or less
40 m or less
10 15