5
.
C
C
A
A
P
P
A
A
C
C
I
I
T
T
I
I
E
E
S
S
A
A
N
N
D
D
S
S
E
E
L
L
E
E
C
C
T
T
I
I
O
O
N
N
D
D
A
A
T
T
A
A
53
5.2 Piping length correction factor
The correction factor is based on the equivalent piping length in meters (EL) and the height between outdoor and indoor units
in meters (H).
H:
Height between indoor unit and outdoor unit (m).
• H>0: Position of outdoor unit is higher than position of indoor unit (m).
• H<0: Position of outdoor unit is lower than position of indoor unit (m).
L:
Actual one-way piping length between indoor unit and outdoor unit (m).
EL:
Equivalent one-way piping length between indoor unit and outdoor unit (m).
Cooling ：
EL
5m 7.5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
9K/12K/18K 1.0 —— 0.98 0.96 0.94 —— —— —— —— —— ——
24K 1.0 —— 0.98 0.96 0.94 0.91 0.88 —— —— —— ——
36K 1.0 —— 0.98 0.96 0.94 0.92 0.90 —— —— —— ——
48K —— 1.0 0.98 0.96 0.93 0.91 0.88 0.85 0.81 0.78 0.76
60K
—— 1.0 0.98 0.96 0.94 0.92 0.89 0.86 0.83 0.79 0.75
Indoor unit
Pipe length L
Height difference H
Outdoor unit
Gas Diameter
(mm/inch)
9.52
(3/8')
12.7
(1/2')
15.88
(5/8')
19.05
(3/4')
90° Elbow
0.15 0.2 0.25 0.35
Model
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