Ka
ysun Amaz
on Unit
ario T
op Dischar
ge Engineering Da
ta Book
Amazon Unitario Top Discharge
148
4.4 Selecting Piping Diameters
Tables 3-4.4 to 3-4.8, below, specify the required pipe diameters for the indoor and outdoor piping. The main pipe (L1) and
first indoor branch joint (A) should be sized according to whichever of Tables 3-4.4 and 3-4.5 indicates the larger size.
Figure 3-4.3: Selecting piping diameters
Legend
L
1
Main pipe
Figures in parentheses
indicate indoor unit
capacity indexes.
L
2
to L
9
Indoor main pipes
a to j
Indoor auxiliary pipes
A to I
Indoor branch joints
Table 3-4.4: Main pipe
1
(L
1
), indoor main pipes (L
2
to L
16
) and indoor branch joint kits
Total capacity indexes of indoor units
Gas pipe (mm)
Liquid pipe (mm)
Branch joint kit
Capacity indexes < 168
Φ15.9
Φ9.53
KCMI 112
168 ≤ Capacity indexes < 224
Φ19.1
Φ9.53
KCMI 112
224 ≤ Capacity indexes < 330
Φ22.2
Φ9.53
KCMI 212
330 ≤ Capacity indexes < 470
Φ28.6
Φ12.7
KCMI 312
470 ≤ Capacity indexes < 710
Φ28.6
Φ15.9
KCMI 312
710 ≤ Capacity indexes < 1040
Φ31.8
Φ19.1
KCMI 312
1040 ≤ Capacity indexes < 1540
Φ38.1
Φ19.1
KCMI 412
Notes:
1.
The main pipe (L1) and first indoor branch joint (A) should be sized according to whichever of
Tables 3-4.4 and 3-4.5 indicates the larger size.
