Mitsubishi Electric CITY MULTI CMB-P104V-G1 Installation Manual page 3

[Fig. 2.4.2]
CMB-P108, 1010, 1013, 1016GA1, P104, 108GB1 (GA1: In the case the outdoor unit is 26-hp (P650 model) or less.)
CMB-P1016HA1, 1016HB1 (HA1: In the case the outdoor unit is 28-hp (P700 model) or more.)
E
A
A
F
F
G
A
B
H
a
D
A Outdoor unit
C SUB BC controller
E The twinning kit is connected inside the outdoor unit on the low-pressure side.
When outdoor units of different capacities are connected, connect the twinning kit
to the unit with a higher capacity.
F Twinning pipe (for R2 series) CMY-R100VBK, CMY-R200VBK
(for WR2 series) CMY-Q100VBK
G Twinning pipe (for Y series) CMY-Y202-G2, CMY-Y102L-G2, CMY-Y102S-G2
H Twinning pipe (CMY-R160-J1: optional)
I Twinning pipe (for Y series) CMY-Y102S-G2
J P100 - P250 model: 2 ports merged
K Maximum of 3 units per a pair of ports
Total capacity of 80 or below
All units connected to the same port must be in the same operation mode.
L Less than H=50 m (when the outdoor unit is higher than the indoor unit)
M Less than H1=40 m (when the outdoor unit is lower than the indoor unit)
N Less than h1=15 m (10 m or less for 200, 250 unit type)
O Less than h2=15 m
Item
Total piping length
Longest piping length
Between outdoor unit and
BC controller
Between indoor units and BC controller B+d or C+D+e or C+E+f
Between outdoor units
Between
Above outdoor unit
indoor and
outdoor units
Below outdoor unit
Between indoor units and BC controller
Between indoor units
Between BC controller (main or sub)
and BC controller (sub)
Between outdoor units
<System that has more than 16 branching points>
G
D
C
I
E
B
b
c d
*6
D D D
J K
B MAIN BC controller
D Indoor unit
Piping portion Allowable value
F+G+A+B+C Not to exceed the
+D+E+a+b maximum refriger-
+c+d+e+f ant piping length *1
165 m or less
F(G)+A+C+E+f (Equivalent length
of 190 m or less)
F(G)+A Below 110
Below 40 *2
F+G Below 5
H Below 50
H1 Below 40
Below 15
h1
(Below 10)*3
Below 15
h2
(Below 10)*3
h3 Below 15
h4 Below 0.1
2.4
D
e
C
C
f
D
Notes:
A system that has more than 16 branching points requires 2 to 3 BC control-
lers (main and sub) and 3 pipes to connect the main and the sub BC control-
lers.
*1 Refer to "Restrictions on piping length" on P. 4.
*2 Please refer to the figure "Distance between main BC controller and far-
thest Indoor unit" when the distance between main BC controller and
farthest indoor unit exceeds 40 m. (Not applicable to the P250 model
indoor unit)
*3 The values in the parentheses show the maximum piping length to be
followed when the connection capacity of the indoor unit is 200 or more.
*4 In the system to which indoor units of the P200 model or above are con-
nected, neither a branch joint nor a branch header may be used.
*5 When connecting two sub BC controllers, the total piping length must be
equal to or less than the maximum length as listed in on the left.
*6 When connecting two sub BC controllers, install them in parallel.
*7 In the system to which indoor units of the P100 through P140 models are
connected, merge the two ports before connecting them. (Set DIP SW4-6
on the main BC controller to ON.)
*8 It is possible to connect the P100 through P140 models of indoor units to
a single port. (Set DIP SW4-6 to OFF.) Note that the cooling capacity will
(Unit: m)
somewhat decrease. (The factory setting for DIP SW4-6 is OFF.)
*9 When the outdoor unit is 28-hp (P700 model) or more, use the HA-type
main BC controller. The G-type BC controller cannot be connected to the
models between 16-hp (P400 model) and 26-hp (P650 model), and the G-
and GA-type BC controllers cannot be connected to the 28-hp (P650
model) or more.
*10 For Sub BC controller GB type, the connectable indoor unit capacities
may sum to equal that of a P350 unit or less. However, if two sub control-
lers are used the TOTAL sum of connectable units connected to BOTH
sub controllers must also not exceed that of a P350 unit.
For sub BC controller HB type, the connectable indoor unit capacities
may sum to equal that or a P350 unit or less. However, if two sub control-
lers are used the TOTAL sum of connectable units connected to BOTH
sub controllers must also not exceed that of a P450 unit.
*11 Indoor units that are connected to the same branch joint cannot be si-
multaneously operated in different operation modes.
*12 Do not connect the P200 or P250 models of indoor units and other mod-
els of indoor units at the same port.
Distance between MAIN BC controller
and farthest indoor unit
70
60
50
40
30
20
10
0
0 5
Height difference between
MAIN BC controller and
farthest indoor unit (m)
10 15
3