Mitsubishi Electric CITY MULTI CMB-M-V-J1 Manuel D'installation page 11

2. CMB-M108, 1012, 1016V-JA1(-TR), CMB-P1016V-KA1(-TR) (When a Sub BC controller is connected)
Unit 1
Unit 2
Ⓐ
Ⓐ
K L
L
K
A
A
Ⓓ
Item
Total piping length
Longest piping length
Between outdoor (heat source)
unit and Main BC controller
Direct connection between indoor
units and (Main or Sub) BC
controller
Between indoor units and Main
BC controller via Sub BC
controller
Above outdoor
Between
(heat source) unit
indoor and
outdoor (heat
Below outdoor
source) units
(heat source) unit
Between BC controller (Both Main
and Sub) and indoor unit
Between indoor units
Between BC controller (Both Main
and Sub) and Sub BC controller
Between outdoor (heat source)
units
D
D
D
C E
Ⓑ
E
C
E
C
F
Ⓕ
a
b
a b
Ⓖ
B
B
c
d d
c
Ⓔ Ⓓ
Ⓓ
*1
Ⓗ
(Unit: m)
Piping portion Allowable value
"K+L+A+B+C
Not to exceed the
+D+E+F+G+J
maximum refrigerant
+M+a+b+c+d
piping length *1
+e+f+g+j"
165 or less
"K(L)+A+C
(Equivalent length of
+E+G+J+j"
190 or less)
"K(L)+A" 110 or less
"a" or "b" or
"B+c" or
"B+d" or "e" 60 or less *2
or "f" or "g" or
"j"
"C+D+e" or
"C+E+F+f" or
"C+E+G+M+g" 90 or less *3
or
"C+E+G+J+j"
H 50 or less
H1 40 or less
15 or less
h1
(10 or less *4)
30 or less
h2
(20 or less *4)
h3 15 or less
h4 0.1 or less
Ⓓ
e
e
Ⓒ
Ⓖ
G
Ⓖ
G
G
F M
F M
Ⓒ
M
f
f
Ⓓ
Outdoor unit (Heat source unit)
Ⓐ
Ⓑ BC controller (Main)
BC controller (Sub)
Ⓒ
Ⓓ Indoor unit
Indoor unit (Total capacity of downstream indoor unit: 100 to 250)
Ⓔ
Ⓕ Twinning pipe (Model name: CMY-R160-J1)
2-Branch Joint Pipe
Ⓖ
Ⓗ Up to three units for 1 branch hole
Total capacity: 80 or below (but same in cooling/heating mode)
Notes:
*1 Refer to "Restrictions on piping length" on P. 3.
*2 Refer to Fig. 1. (However, when P/M200 or P/M250 model of indoor unit is
connected, the maximum allowable distance between BC controller and
farthest indoor unit is 40 m.)
*3 When the piping length or the height difference exceeds the restriction
specified in Fig. 1, connect a sub BC controller to the system. The
restriction for a system with a sub BC controller is shown in Fig. 2.
When a given system configuration falls within the shaded area in Fig.
2, increase the size of the high-pressure pipe and the liquid pipe
between the main and sub BC controller by one size. When using
P/M32, P/M40, P/M50, P/M100, or P/M125 model of indoor units,
increase the size of the liquid branch pipe between the sub BC
controller and indoor unit by one size.
When using P/M140 or larger model of indoor units, the restriction
shown in Fig. 1 cannot be exceeded.
*4 The values in the parentheses show the maximum piping length to be
followed when the connection capacity of the indoor unit is 200 or
above.
*5 In the system to which indoor units of the P/M200 model or above are
connected, neither a branch joint nor a branch header may be used.
*6 Do not connect the P/M200 or P/M250 models of indoor units and other
models of indoor units at the same port.
*7 In the system to which indoor units of the P/M100 through P/M140
models are connected, merge the two ports before connecting them.
(Set DIP SW4-6 on the BC controller to ON.)
*8 It is possible to connect the P/M100 through P/M140 models of indoor
units to a single port. (Set DIP SW4-6 to OFF.) Note that the cooling
capacity will somewhat decrease. (The factory setting for DIP SW4-6 is
OFF.)
When connecting only PEFY-P50/63/71/80VMHS2-E units, set the
dipswitches SW4-1 and SW4-6 on the BC controller to ON.
*9 Indoor units that are connected to the same branch joint cannot be
simultaneously operated in different operation modes.
*10 When connecting PEFY-P50/63/71/80VMHS2-E units to two ports, use a
Joint Pipe Kit CMY-R160-J1.
*11 The maximum total capacity of indoor units that can be connected to
each Sub BC controller is P/M350.
*12 Sub BC controller cannot be used at Ⓑ.
*13 For connecting 15 to 50 model indoor units
Have pipe expansion of indoor unit connecting port by cutting the piping at
the cutting point which depends on the indoor unit capacity.
*14 Up to 11 Sub BC controllers can be connected.
J
J
J
Ⓒ
Ⓒ
g
j
g
j
Ⓓ
Ⓓ
11