Kaysun KEM-30 DNH3, Technical Manual

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MCAC-ATSM-2017-08 Aqua Tempo Power Series (with LAK) air cooled scroll chiller unit (50Hz)
101
process of operation.
2) In case of refrigerating or heating shutdown, the pump will be shut down 2 minutes after all modules stop operating.
3) In case of shutdown under the pump mode, the pump can be directly shut down.
21
One compressor of the system B(B1);
Neutral wire;
One compressor of the system A(A1);
Neutral wire.
22
Numerical code tube.
1) In case of stand-by, the address of the module is displayed;
2) In case of normal operation, 10. is displayed (10 is followed by dot).
3) In case of fault or protection, fault code or protection code is displayed.
23
Four-way valve of the system B;
Neutral wire.
24 Outdoor fan A, controlled by T4.
25 Outdoor fan B, controlled by T4.
26 PWM pressure relif valve control(for digital compressor)
27 Input of transformer, 220-230V AC current. (only valid for the main unit)
28
Input of three-phase four-wire power supply (fault code E1)
Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be 120º
among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will be
displayed. When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase
dislocation of power supply are detected only in the early period after the power supply is connected, and they are not
detected while the unit is in operation.
29 Output of transformer
30 Power port for the current board
31
One compressor of the system B(B2); Neutral wire;
One compressor of the system A(A2) ; Neutral wire.
32 The alarm signal output of the unit(ON/OFF signal)
33
Anti-freezing pressure protection of the system A(protection code Pc)
Anti-freezing pressure protection of the system B(protection code Pd)
34
Remote control port(ON/OFF signal, effect on NO.0 unit)
1 Dial the code S7 in the main control board to the ON position and enter to the remote control mode
(the wire controller is invalid)
2 If the port is closed, the unit is turned on, else,the unit is turned off.
35
Remote mode control port(ON/OFF signal,effect on NO.0 unit)
1 Dial the code S7 in the main control board to the ON position and enter to the remote control mode
(the wire controller is invalid)
2 First, the ON/OFF port is closed, second,if this port is closed, the unit enters the heating mode, else,the unit enters
the cooling mode.
36 Four-way valve of the system A; Neutral wire.
37 Detection of current of the compressor B2 (protection code P5)
38 Plate heat exchanger heater/Pump heater port(DC 12V signal).