8
S4179544
Model
48 Type
70, 90 Type
Items
Marks
Contents
Length (m)
Allowable tubing length
L1
Max. tubing length
Actual length
50
100
Equivalent length
65
125
L2 - L4
Difference between max. length and
min. length from the No.1 distribution joint
30
30
l
1
,
l
2
, ~
l
n
Max. length of each distribution joint
30
30
l
1
+
l
2
+ ~
Total max. tubing length including length of
+
l
n-1
+ L1
each distribution joint
70
150
Allowable elevation
H1
When outdoor unit is installed higher than indoor unit
40
50
difference
When outdoor unit is installed lower than indoor unit
30
30
H2
Max. difference between indoor units
15
15
Allowable length of
L3
Max. tubing length between the first T-joint
header tube
and terminated (weld shut) end point
2
2
1-5. Tubing Length
●
Refrigerant tubing between the indoor and outdoor
units should be kept as short as possible.
Installation Example 1
Installation Example 2
0006_M_I
L1
L2
L4
LB
3
1
2
H1
H2
LA
Select and decide the installation location so that the
length of the refrigerant tubing will be within the limits
given in Table 1-10.
Symbol meanings:
: Optional distribution joint kit (APR-DV94MB, DV64MB)
: T-joint (field supply)
: Weld solidly (pinch shut)
0007_M_I
L3
L2
LB
3
2
LA
LB LB
1
T-joint
+
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
L = Length;
H = Height
Table 1-10