10. Installation
Installation example
Total power cable length L = 100 [m], initial pull-in current i = 10 [A], running current of each unit = 1 [A],
total 10 fan coil units are installed.
∑ (
Coef × 35.6 × L
k
× i
k
) < 10 % of input voltage [V]
1000×Ak
n
k=1
ELB
MCCB
10 [A]
0 [m]
10 [m]
20 [m]
100 [m]
Fan coil unit
Fan coil unit
Fan coil unit
9 [A]
1 [A]
• Apply the following formula.
• Calculation
Installing with one type of wire
Installing with two types of wires
2.5 [mm²]
-2.2 [V]
220 [V]
Within 198 V to 242 V
208.8 [V]: Applicable
-2.0 [V]
-(2.2 + 2.0 + 1.8 + 1.5 + 1.3 + 1.1 + 0.9 + 0.7 + 0.4 + 0.2) = -11.2 [V]
2.5 [mm²]
············ 2.5 [mm²] ············
4.0 [mm²]
4.0 [mm²]
············ 2.5 [mm²] ············
-1.4 [V]
220 [V]
-1.2 [V]
-(1.4 + 1.2 + 1.8 + 1.5 + 1.3 + 1.1 + 0.9 + 0.7 + 0.4 + 0.2) = -10.5 [V]
Within 198 V to 242 V
209.5 [V]: Applicable
