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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]
<Top view>
A
450 (17-23/32)
C
B
D
INDOOR UNIT SIDE
D
A
<Front view>
B
A Inspection hole
C Control box
*1 Dimensions with which pipe connection can be handled at site
Model name
A
TCMBG0104SJ11N4
596
TCMBG0106SJ11N4
[23-15/32]
TCMBG0108SJ11N4
911
TCMBG1012SJ11N4
[35-7/8]
1135
TCMBG1016SJ11N4
[44-11/16]
911
TCMBM0108JA11N4
[35-7/8]
TCMBM1012JA11N4
1135
TCMBM1016JA11N4
[44-11/16]
TCMBM1016KA11N4
TCMBS0104KB11N4
596
[23-15/32]
TCMBS0108KB11N4
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. TCMBG0104, 0106, 0108, 1012, 1016SJ11N4 (In the case the outdoor
unit is 12.5-hp (P120 model) or below, and 16 or fewer ports are used.)
TCMBM0108, 1012, 1016JA11N4, TCMBM1016KA11N4 (When no Sub
BC controller is connected)
[Fig. 3.4.1]
Unit 1
Ⓐ
A
A
a
Ⓓ
(Unit: mm [in])
E
B
B On the side of outdoor unit piping
D On the side of indoor unit piping
B
C
D
398
[9-11/16]
[2-7/8]
250
-
[9-27/32]
[9-1/8]
[13-9/16]
545
[21-15/32]
[9-1/8]
250
300
[9-27/32]
[11-13/16]
[13-9/16]
398
250
-
[9-11/16]
[9-27/32]
[2-7/8]
Ⓑ
Ⓕ
Ⓓ
b
a
b
d
d
Ⓖ
B
B
c
c
Ⓔ
Ⓓ
Ⓗ
A Outdoor unit (Heat source unit)
C BC controller (Sub)
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)
Total piping length
Longest piping length
Between outdoor (heat source) unit
and BC controller
Between indoor units and BC controller
Between indoor
and outdoor
(heat source)
units
Between indoor units and BC controller "h1"
Between indoor units
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
E
BC controller and farthest indoor unit is 40 m [131 ft].)
*3
The values in the parentheses show the maximum piping length to
73
be followed when the connection capacity of the indoor unit is 72 or
more.
231
*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.
343
*5
Do not connect the P72 or P96 models of indoor units and other
models of indoor units at the same port.
231
*6
Indoor units that are connected to the same branch joint cannot be
simultaneously operated in different operation modes.
343
*7
When connecting multiple indoor units to one branch port, those
indoor units must be installed in the same room.
73
*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)
70 [229]
60 [196]
50 [164]
40 [131]
30 [98]
20 [65]
10 [32]
0
0
Height difference between BC controller and farthest indoor
unit (m [ft])
B BC controller (Main)
D Indoor unit
Item
Piping portion
"A+B+a+b
+c+d"
"A+B+c"
"A"
"a" or "b" or
"B+c" or "B+d"
Above outdoor
"H"
(heat source) unit
Below outdoor
"H1"
(heat source) unit
"h2"
5 [16]
10 [32]
(Unit: m [ft])
Allowable value
Not to exceed
the maximum
refrigerant piping
length *1
165 [541] or less
(Equivalent length
of 190 [623] or less)
110 [360] or less
60 [196] or less *2
50 [164] or less
40 [131]or less
15 [49] or less
(10 [32] or less *3)
30 [98] or less
(20 [65] or less *3)
15 [49]
5
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