5
GB
3.3. Securing installation and service
space
1. For hanging from the ceiling
(This is a reference view showing the least installation space.)
[Fig. 3.3.1]
(Unit: mm [in])
INDOOR UNIT SIDE
130 [5-1/8]
*1
A
D
B
E
(700)
250
B
A
D
C
[9-27
/32]
[9-27/32]
[27-9/16]
100
B
[3-15/16]
200
[7-7/8]
450 (17-23/32)
C
<Top view>
<Front view>
A
Inspection
hole
B
On the side of outdoor unit piping
C
Control
box
D
On the side of indoor unit piping
*1 Dimensions with which pipe connection can be handled at site
Model name
A
B
C
D
E
CMB-P104NU-J1
596
[23-15/32]
-
398
[9-11/16]
250
[9-27/32]
73
[2-7/8]
CMB-P106NU-J1
CMB-P108NU-J1
CMB-P1012NU-J1
911
[35-7/8]
545
[21-15/32]
231
[9-1/8]
CMB-P1016NU-J1
1135
[44-11/16]
343
[13-9/16]
CMB-P108NU-JA1
911
[35-7/8]
250
[9-27/32]
300
[11-13/16]
231
[9-1/8]
CMB-P1012NU-JA1
1135
[44-11/16]
343
[13-9/16]
CMB-P1016NU-JA1
CMB-P1016NU-KA1
CMB-P104NU-KB1
596
[23-15/32]
-
398
[9-11/16]
250
[9-27/32]
73
[2-7/8]
CMB-P108NU-KB1
3.4. Checking the installation site
Check that the difference of elevation between indoor and outdoor units and the
length of refrigerant piping are within the following limitations.
1. CMB-P104, 106, 108, 1012, 1016NU-J1 (In the case the outdoor unit
is 12.5-hp (P120 model) or below, and 16 or fewer ports are used.)
CMB-P108, 1012, 1016NU-JA1, CMB-P1016NU-KA1 (When no Sub BC
controller is connected)
[Fig. 3.4.1]
Ⓑ
Ⓓ
A
A
a
a
b
b
Ⓐ
Ⓔ
Ⓓ
Ⓓ
Ⓗ
B
B
c
c
d
d
Ⓕ
Ⓖ
H
H1
h1
h2
A
Outdoor unit (Heat source unit)
B
BC controller (Main)
C
BC controller (Sub)
D
Indoor
unit
E
Indoor unit (Total capacity of downstream indoor unit: 72 to 96)
F
Twinning pipe (Model name: CMY-R160-J1)
G
2-Branch Joint Pipe
H
Up to three units for 1 branch hole
Total capacity: 30 or below. (but same in cooling/heating mode)
(Unit: m [ft])
Item
Piping portion
Allowable value
Length
Total piping length
"A+B+a+b
+c+d"
Not to exceed
the maximum
refrigerant piping
length *1
Longest piping length
"A+B+c"
165 [541] or less
(Equivalent length
of 190 [623] or less)
Between outdoor (heat source) unit
and BC controller
"A"
110 [360] or less
Between indoor units and BC controller
"a" or "b" or
"B+c" or "B+d"
60 [196] or less *2
Dif
ference of height
Between indoor
and outdoor
(heat source)
units
Above outdoor
(heat source) unit
"H"
50 [164] or less
Below outdoor
(heat source) unit
"H1"
40 [131]or less
Between indoor units and BC controller "h1"
15 [49] or less
(10 [32] or less *3)
Between indoor units
"h2"
30 [98] or less
(20 [65] or less *3)
Notes:
*1 Refer to “Restrictions on piping length” on P. 8.
*2 Refer to the graph “Distance between main BC controller and farthest
indoor unit (direct connection)”. (However, when P72 or P96 model of
indoor unit is connected, the maximum allowable distance between
BC controller and farthest indoor unit is 40 m [131 ft].)
*3 The values in the parentheses show the maximum piping length to
be followed when the connection capacity of the indoor unit is 72 or
more.
*4 In the system to which indoor units of the P72 model or above are
connected, neither a branch joint nor a branch header may be used.
*5 Do not connect the P72 or P96 models of indoor units and other
models of indoor units at the same port.
*6 Indoor units that are connected to the same branch joint cannot be
simultaneously operated in different operation modes.
*7 When connecting multiple indoor units to one branch port, those
indoor units must be installed in the same room.
*8 For connecting 6 to 18 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.
Distance between main BC controller and farthest indoor unit (direct connection)
Height difference between BC controller and farthest indoor
unit (m [ft])
15 [49]
10 [32]
5 [16]
20 [65]
10 [32]
0
0
Distance between BC contoroller
and farthest indoor unit (m [ft])
70 [229]
60 [196]
50 [164]
40 [131]
30 [98]
Unit 1
