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SMMS-i
Installation Manual
SMMS-i
Installation Manual
(5)
Branching section
È
Indoor unit
Indoor unit
connecting pipe
Connecting pipe size of indoor unit
(6)
Branching section
Y-shaped
branching joint
Selection of branching section (Y-shaped branching joint)
(7)
Branching section Branching header
Selection of branching section (Branching header)
*2: Up to a total of 6.0 maximum equivalent to HP capacity codes is connectable to one line
after branching of header. When the total capacity codes of all outdoor units are 12 to below
26 (equivalent to HP) and you use a branching header for the first branching section, use
a RBM-HY2043E or RBM-HY2083E regardless of the total capacity codes of outdoor units
at downstream side. In addition, you cannot use a branching header for the first branching
section when the total capacity codes of all outdoor units are over 26 (equivalent to HP).
(8)
Branching section
Outdoor unit
connection piping
kit (For linking of
outdoor units)
Outdoor unit connection piping kit (For linking of outdoor units)
*3: Downstream side when regarding the main piping as the start point
No.
Piping parts Name Selection of pipe size Remarks
Capacity rank Gas side
Liquid
side
007 to 012 type
15m or less real length Ø9.5 Ø6.4
Real length exceeds 15m Ø12.7 Ø6.4
015 to 018 type Ø12.7 Ø6.4
024 to 056 type Ø15.9 Ø9.5
072 to 096 type Ø22.2 Ø12.7
Total capacity code of indoor units
Model name
Equivalent to HP
Equivalent to
capacity
Y-shape
branching joint
Below 6.4 Below 18.0 RBM-BY55E
6.4 to below 14.2 18.0 to below 40.0 RBM-BY105E
14.2 to below 25.2 40.0 to below 70.5 RBM-BY205E
25.2 or more 70.5 or more RBM-BY305E
Total capacity code of indoor units
Model name
Equivalent to HP
Equivalent to
capacity
*2
Branching header
For 4
branches
Below 14.2 Below 40.0 RBM-HY1043E
14.2 to below 25.2 40.0 to below 70.5 RBM-HY2043E
For 8
branches
Below 14.2 Below 40.0 RBM-HY1083E
14.2 to below 25.2 40.0 to below 70.5 RBM-HY2083E
Total capacity code of outdoor units
*3
Model name
Equivalent to HP
Equivalent to
capacity
Outdoor unit
connection piping
kit (For linking of
outdoor units)
Below 26.0 Below 73.0 RBM-BT14E
26.0 or more Above 73.0 RBM-BT24E
Allowable length of refrigerant pipes and allowable height
difference between units
D
Follower unit
Height
difference
between
outdoor
units
H3 ≤ 5 m
Height
difference
between
indoor units:
H2 ≤ 40 m
Outdoor unit
Ld
Lc
Lb
La
LB
LA
Outdoor unit connection piping kit
(For linking of outdoor units)
Outdoor unit connecting pipes
The longest piping between outdoor units:
L0 ≤ 25 m
Main piping L1
Height
difference
between
outdoor
and indoor
units:
H1 ≤ 70 m
First branching
section
L3
Y-shaped
branching joint
L4
L5
L6
Indoor unit
f
g
h
i
j
The longest piping length from the first branch: Li ≤ 90 m
The longest piping length: L ≤ 235 m
Indoor unit
abcde
(j)
Indoor unit connecting
pipe
Branching header
Y-shaped branching
joint
L7
A
Header
unit
B
Follower
unit
C
Follower
unit
25-EN 26-EN
+00EH99871699_01EN.book Page 13 Thursday, August 26, 2010 4:41 PM