Panasonic S-36PU1E5A Technical Data & Service Manual page 265

R410a models
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Tubing Size
(A) Single type
Refrigerant tubing between the indoor and outdoor units should be kept as short as possible.
The lengths of the refrigerant tubes between the indoor and outdoor units are limited by the elevation difference
between the 2 units. During tubing work, try to make both the tubing length (L) and the difference in elevation (H1)
as short as possible.
Single
Main tubing L
(B) Simultaneous operation multi (Twin)
N OTE
Because the indoor units run simultaneously, install them within the same room.
Table 1-1
I
e t
m
Maximum
allowable
Allowable
tubing length
tubing
Maximum
lengths
distribution
tubing length
Maximum branch tubing
length
Maximum difference between lengths of No. 1 distribution
tubing (double twin)
Maximum difference between lengths of No. 2 distribution
tubing (double twin)
Maximum
Maximum
indoor-
allowable
outdoor height
height
difference
difference
Maximum height difference between indoor units
* For connection tubing sizes, refer to Table above.
Twin
Main
tubing L
Distribution joint
1
2
Outdoor unit type
Maximum allowable
Charge-less tubing
Additional charge per 1 m
Contents
One-way length of tubing
from outdoor unit to the most
distant indoor unit
Maximum length following
the first branch point (No. 1
distribution)
Difference between the
maximum length and
minimum length in tubing
following the first branch point
If outdoor unit is higher
If outdoor unit is lower
CZ-P155BK1
NOTE
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).
U-50PE1E5
tubing length
length
(actual length)
Symbol
Single
Twin
L + 1
L
L + 2
1, 2
1 > 2
1 – 2
H1
H2
1-255
U-60PEY1E5
U-71PEY1E5
40 m
50 m
3 – 30 m
3 – 20 m
20 g
40 g
Actual length (m)
60 – 71
50
single
40
50
30
30
15
15
1
71
twin
40
15
10
30
15
0.5

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