11
(B) Simultaneous operation multi (Twin, Triple, Double-Twin)
Because the indoor units run simultaneously, install them within the same room.
NOTE
Single
Twin
Triple
Double-Twin
Actual
length (m)
L
L + 1
L + 2
L + 3
L + 1, L + 2
L + L1 + 1, L + L1 + 2
L2 + 3, L2 + 4
Max.: L2 + 4
Min.: L1 + 1
(L2 + 4) – (L1+ 1)
L1 + 1, L1 + 2
1, 2
1 > 2
1 > 2 > 3
1 – 2
1 – 2
1 – 3
2 – 3
L + L2 + 3, L + L2 + 4
1, 2, 3
≤
50
≤
15
≤
10
≤
10
≤
10
≤
30
≤
15
≤
0.5
Item
Contents
Allowable
tubing
lengths
Maximum allowable
tubing length
One-way length of tubing from outdoor
unit to the most distant indoor unit
Maximum distribution
tubing length
Maximum length following the first
branch point (No. 1 distribution)
Maximum branch tubing
length
Difference between the maximum
length and minimum length in tubing
following the first branch point
Maximum difference between lengths of No. 1 distribution tubing
(double twin)
Maximum difference between lengths of No. 2 distribution tubing
(double twin)
Maximum
allowable
height
difference
Maximum indoor-outdoor
height difference
If outdoor unit is higher
If outdoor unit is lower
Maximum height difference between indoor units
Symbol
L2 > L1
2 > 1
4 > 3
2 – 1
4 – 3
L2 – L1
H2
H2, H3, H4
H2, H3, H4, H5, H6, H7
–
–
–
–
–
–
–
–
–
H1
H1
Triple
Twin
Double-Twin
Main
tubing L
Main tubing L
Main
tubing L
Distribution joint No. 1
Distribution joint
(purchase separately)
Distribution joint
Distribution tubing
A
A
A
1
2
2
A
1
1
2
3
3
4
* For connection tubing sizes, refer to table above.
B
H1
H1
H1
H2
H2
H2
H4
H3
H3
H6
H7
H5
Distribution joint
No. 2
L1
L2
A = K70A056Z
B = K70A061Z
●
For refrigerant tube branches, use the optional distribution joints.
●
For cautions on the use of the optional distribution joints, be sure to refer to the provided instruction sheet. Also,
be careful to install them in the correct direction (orientation).
NOTE
04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 11
