Tubing Length - Sanyo Mini ECO-i SPW-ASR74GXH56(A/B) Installation Instructions Manual

05-194 5/27/05 5:06 PM

1-9. Tubing Length

Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown
in the figure below.
Main tube of unit
1st branch
Unit distribution tube
Note: Do not use commercially available T-joints for the liquid tubing.
* Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor
unit connections and tubing branches.
Table 1-10 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
Items
Allowable tubing
length
Allowable elevation
difference
L = Length, H = Height
Page 10
L1
LA
L2
LB LC
L3
2
1
Marks
L1 Max. tubing length
Difference between max. length and min.
L (L2 – L3)
length from the No.1 distribution joint
, ~
Max. length of each distribution tube
1 2 n
Total max. tubing length including length of
+ +~
+L1
1 2 n–1
each distribution tube (only narrow tubing)
When outdoor unit is installed higher than indoor unit
H1
When outdoor unit is installed lower than indoor unit
H2 Max. difference between indoor units
LD
n
3
n-1
Contents
Actual length
Equivalent length
10
H1
H2
R410A distribution joint
APR-RP160AG (for indoor unit)
Length (m)
>
150
>
175
>
40
>
30
>
200
>
50
>
40
>
15