13
Table 1-13 Indoor Unit Tubing Connection (
1
,
2
...
n–1
)
(mm)
ø15.
88
ø9.52
U
n
it: mm
ø6.
3
5
ø12.7
Ga
s
t
u
bi
ng
(mm)
Liq
u
id t
u
bi
ng
Indoor unit ty
p
e
7
9
12
1
8
25
3
6
4
8
ø9.52
ø15.
88
ø9.52
ø12.7
(mm)
(mm)
–
7.1
(2.5 hp)
7.1
(2.5 hp)
15.5
(6 hp)
Below kW
Over kW
Total capacity
after di
s
trib
u
tio
n
T
u
bi
ng
s
ize
Ga
s
t
u
bi
ng
Liq
u
id t
u
bi
ng
hp = hor
s
epower
U
n
it: mm
1-5. Tubing Size
Table 1-11 Main Tubing Size (LA)
ø19.05
6
Unit: mm
15.5
14.0
5
ø9.52
ø15.88
4
11.2
kW
System
horsepower
Gas tubing
(mm)
Liquid tubing
(mm)
Table 1-12 Main Tubing Size After Distribution (LB, LC...)
Material
O
Copper tubing
Outer diameter
6.35
9.52
12.7
15.88
Wall thickness
0.8
0.8
0.8
1.0
1.0
19.05
Table 1-15 Required Copper Tubing Dimensions
Unit: mm
Ga
s
tu
b
in
g
s
ize (mm)
90
°
elbow
45
°
elbow
U-
s
hape t
u
be be
n
d (R60 – 100 mm)
Trap be
n
d
12.7
0.
3
0
0.2
3
0.90
2.
3
0
15.
88
0.
3
5
0.26
1.05
2.
8
0
19.05
0.42
0.
3
2
1.26
3
.20
Y-bra
n
ch di
s
trib
u
tio
n
joi
n
t
Eq
u
ivale
n
t le
ng
th co
n
ver
s
io
n
n
ot
n
eeded.
Ball valve for
s
ervice
Eq
u
ivale
n
t le
ng
th co
n
ver
s
io
n
n
ot
n
eeded.
1-6. Straight Equivalent Length of Joints
Design the tubing system by referring to the following table for the straight equivalent length of joints.
Table 1-14 Straight Equivalent Length of Joints
Note:
In case the total capacity of connected indoor units exceeds the total capacity of the outdoor units, select the main
tubing size for the total capacity of the outdoor units.
Note:
When only one indoor unit is connected to a 6-hp outdoor unit, connect ø19.05 gas tubing up to just before the indoor
unit, then use a socket or similar device (field supply) to change the tube diameter to ø15.88 and connect the gas tube
to the indoor unit.
06-062 Mini ECO-i II for Technibel 2/8/06 4:32 PM Page 13