Chariot Carriers Merci Installation Manual download pdf (Page 37)

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How to wire

1. Remove the terminal cover by taking off the mounting screw (1 piece).

2. Connect the power supply wires and system interconnection wires to the terminal block of the electrical control

box.

3. Tighten the screws of the terminal block, connect the wires matching the terminal numbers (Do not apply tension

to the connecting section of the terminal block.)

4. Attach the terminal cover.

 When connecting the system interconnection wire to the outdoor unit terminal, prevent water from coming into

the outdoor unit.

 Insulate the unsheathed cords (conductors) with electrical insulation tape. Process them so that they do not

touch any electrical or metal parts.

 For system interc

onnection wires, do not use a wire joined to another on the way.

Use wires long enough to cover the entire length.

Stripping length power cord and connecting wire

Terminal cover

Screw

123LN

Earth screw

System interconnection wire Power supply wire

1010

3030

4040

123

Earth wire

System

interconnection wire

Power supply wire

Earth wire

(mm)

Earthing

WARNING

Be sure to connect the earth wire. (grounding work)

Incomplete grounding may cause an electric shock.

Connect the earth wire properly following applicable technical standards.

Connecting the earth

wire is essential to preventing electric shock and to reducing noise and electrical charges on

the outdoor unit surface due to the high-frequency wave generated by the frequency converter (inverter) in the

outdoor unit.

If you touch the charged outdoor unit without an earth

wire, you may experience an electric shock.

Finishing

After the refrigerant pipe, inter-unit wires, and drain pipe have been connected, cover them with finishing tape and

clamp them to the wall with off-the-shelf support brackets or their equivalent.

Keep the power wires and system interconne

ction wires off the valve on the gas side or pipes that have no heat

insulator.

10Test run

 Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor during

startup.

To protect the compressor, power is supplied from the 220-240 VAC input to the unit to preheat the compressor.

 Check the following before starting a test run:

 That all pipes are connected securely without leaks.

 That the valve is open.

If the compressor is operated with the valve closed, the outdoor unit will become overpressurized, which may

damage the compressor or other comp

onents.

If there is a leak at a connection, air can be sucked in and the internal pressure further increases, which may

cause a burst or injury.

 Operate the air conditioner in the correct procedure as specified in the Owner’s Manual.

11Annual maintenance

For an air conditioning system that is operated on a regular basis, cleaning and maintenance of the indoor / outdoor

units are strongly recommended.

As a general rule, if an indoor unit is operated for about 8 hours daily, the indoor / outdoor units will need to be

cleaned at least once every 3 months. This cleaning and maintenance should be carried out by a qualified service

rson.

Failure to clean the indoor / outdoor units regularly will result in poor performance, icing, water leaking and even

compressor failure.

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Chariot Carriers Merci Installation Manual Page 37

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