Shenzhen Envicool Technology Co., Ltd.
1. The number of compressor fixed pieces depends on the size of the compressor.
2. The unit has high voltage. The power supply must be cut off before any troubleshooting is
conducted inside the unit.
Each unit is configured with complete set of internal wire upon delivery. Please refer to the
internal circuit diagram upon wiring. The wires to be connected onsite include:
1. Power cable of indoor unit: three-phase five-wire (3×L+N+PE);
2. Power cable of outdoor unit: three-phase five-wire (3×L+N+PE);
3. Pump cabinet power cable: single-phase (L+N+PE);
4. Outdoor unit control cable: 2 sets of 2-core wire;
5. Connection of communication cable between indoor unit and upstream device
(optional);
6. Pump cabinet control wire: 2-core wire (twisted-pair shielded wire);
7. Indoor unit: Connection of the public alarm output line and control line of the
remote switch (optional) ;
8. Low-temperature component power cable: single-phase (1L+N+PE);
low-temperature component solenoid valve control line (2*0.75mm); power cord and
control line are connected from the indoor unit.
1、 Only the multi-core copper cable can be used as the power cable of the indoor/outdoor unit;
make sure that all the connections are firm. Pay attention that the power supply voltage shall
be the same as the rated voltage on the equipment nameplate.
2、 The communication line is not less than 2 × 0.5mm2 twisted-pair shielded wire. The shield of
the shielded wire must be reliably grounded.
3、 DISCONNECT switch shall be installed in the distribution cabinet to disconnect the power
supply to the equipment during the maintenance. The DISCONNECT switch of the
distribution cabinet shall be selected according to the optional current value in Table 2-17
4、 To control the outdoor unit, it is suggested not to provide separate power supply to the outdoor
unit. As the standard configuration, the outdoor unit is powered from the indoor unit.
5、 The connection of all the power cables, control cables and grounding wires shall comply with
the national and local electrician regulations.
6、 The remote power switch is an active signal, and the factory default is short-circuited; if there
are multiple units for remote power on / off, it cannot be connected in parallel and signal
isolation is required.
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