EAS ELECTRIC ECH Serie Manual De Instalación página 71

Step 5. The wires of the main power must pass the bonding clamp.
Step 6. Wires should be connected firmly to the connection terminals A, B, C and N.
Step 7. Phase sequences must be consistent when the wires of the main power.
Step 8. The main power should be located out of easy reach of non-professional maintenance personnel, to avoid mal-operation and
improve safety.
Step 9. Connection of control wires of auxiliary electric heaters: the control wires of AC contactor of the auxiliary electric heater must
pass the connection terminals CN19_L and CN19_N of the main unit, as shown in Fig. 5-2.
Step 10. Connection of control wires of pump: the control wires of AC contactor of pump must pass the connection terminals CN1 or
CN2 of the main unit, as shown in Fig. 5-3.
Step 11. The connection way of the wire controller connects with every signal wires from package units: signal wires P, Q, E are
connected in the same way of main wires connection method and accordingly connect to the terminals P, Q, E in the wire controller.
CN19_Ｌ
CN19_N
An all-pole disconnection device which has at least 3mm separation distance in all pole and a residual current
device(RCD)with the rating of above 10 mA shall be incorporated in the fixed wiring according to the national rule.
The appliance shall be installed in accordance with national wiring regulationgs.
5.5 Electric control schematic diagram of the unit
5.5.1 Schematic diagram of connection and communication of the main unit and subordinate units (see Attached Picture)
5.5.2 Indicating diagram of electric control of main control board (see Fig.5-4)
23
22
21
20
19
18
17
16
15
14 12
13 11
The picture is for reference only, refer to the actual board.
V.2
14
Overcurrent relay
Control coil of AC contactor
Fig.5-2
25 27
24 26
10 8 6 4
9 7 5 3
CN2 or
CN1
CAUTION
28
2
1
Switch (For trial run of pump)
Overcurrent relay
Control coil of AC contactor
29
30
31
32
33
34
36
35
Fig.5-4
Fig.5-3