WFC- SC(H) Series .Installation
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5.3.2. Inside of Junction box wiring
In the Junction box there is a noise filter and some connecting terminals as
figure 5-3-2.
Note1. All conductors must be from copper material.
Note2. All wiring must comply with local and national electrical code and regulation.
Terminal marking Description
L1, L2, L3,PE 400VAC 3phase 50Hz primary power supply
PE Ground line
P Output control signal to chilling/heating water pump
CP Output control signal to cooling water pump
P3A Output control signal to heat medium pump (normal open)
P3B Output control signal to heat medium pump (normal close) (Option)
CTF Output control signal to cooling tower fan (Option)
CM1 Output signal common circuit
1 Not Use
2 Not Use
3 Error signal from chilling/heating water pump
4 Error signal from cooling water pump
5 Error signal from cooling tower fan
6 Error signal from heat medium pump
7 Not Use
8 Not Use
CM2 Error signals common circuit
S3, S4 Requirement heat medium output signal (Option)
１
２
３
４
Noise filter
power supply terminal
Error signal input terminal
Control signal output terminal
Extra control signal output terminal
connecting terminal
・
Connect the conductor by adjusting the
symbol (3,4,5,6,CM2) with figure 5-2-1 .
・
These are input terminal to the chiller.
・
Attention!
You must not give any voltage on to
these terminals.
・
Connect the conductor by adjusting the
symbol (P,CP,P3A,CM1) with figure 5-2-1 .
・
These are output terminal from the chiller .
・
Attention!
Do not exceed 24VAC, 60VA as shown in Figure 5-2-1.
・
Connect the 400VAC 3phase 50Hz power
supply. Connect the ground conductor to PE.
・
Circuit breaker and over -current protection
must be supplied externally by others.
Figure 5-3-2
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