Field Wiring; Precautions On Electrical Wiring Work; Precautions On Wiring Of Power Supply - EAS ELECTRIC M-THERMAL 2 R32 BIBLOCK ETHKH100A190 Guide D'utilisation

7 FIELD WIRING

A main switch or other means of disconnection, having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with relevant local laws and regulations. Switch off
the power supply before making any connections. Use only copper wires. Never squeeze bundled
cables and make sure they do not come in contact with the piping and sharp edges. Make sure no
external pressure is applied to the terminal connections. All field wiring and components must be
installed by a licensed electrician and must comply with relevant local laws and regulations.
The field wiring must be carried out in accordance with the wiring diagram supplied with the unit
and the instructions given below.
Be sure to use a dedicated power supply. Never use a power supply shared by another appliance.
Be sure to establish a ground. Do not ground the unit to a utility pipe, surge protector, or telephone
ground. Incomplete grounding may cause electrical shock.
Be sure to install a ground fault circuit interrupter (30 mA). Failure to do so may cause electrical shock.
Be sure to install the required fuses or circuit breakers.

7.1 Precautions on electrical wiring work

 Fix cables so that cables do not make contact with the pipes (especially on the high pressure side).
 Secure the electrical wiring with cable ties as shown in figure so that it does not come in contact with the
piping, particularly on the high-pressure side.
 Make sure no external pressure is applied to the terminal connectors.
 When installing the ground fault circuit interrupter make sure that it is compatible with the inverter
(resistant to high frequency electrical noise) to avoid unnecessary opening of the ground fault circuit
interrupter.
The ground fault circuit interrupter must be a high- speed type breaker of 30 m A (<0.1 s).
 Maximum length of communication wirings is 50m.
 Power cords and communication wiring must be laid out separately, they can not be placed in the
same conduit. Otherwise, it may lead to electromagnetic interference.
communication wirings should not come in contact with the refrigerant pipe so as to prevent the
high temperature pipe from damaging the wires.
 Communication wirings must use shielded lines.Including indoor unit to outdoor unit PQE line,
indoor unit to controller ABXYE line.
This unit is equipped with an inverter. Installing a phase advancing capacitor not only will reduce
the power factor improvement effect, but also may cause abnormal heating of the capacitor due to high-
frequency waves. Never install a phase advancing capacitor as it could lead to an accident.
Equipment must be grounded.
All high-voltage external load, if it is metal or a grounded port, must be grounded.
All external load current is needed less than 0.2A, if the single load current is greater than 0.2A, the load
must be controlled through AC contactor.

7.2 Precautions on wiring of power supply

Use a round crimp-style terminal for connection to the power supply terminal board. In case it
cannot be used due to unavoidable reasons, be sure to observe the following instructions.
- Do not connect different gauge wires to the same power supply terminal. (Loose connections may cause
overheating.)
-
When connecting wires of the same gauge, connect them according to the figure below.
WARNING
NOTE
NOTE
19
Power cords and
V.2