Pumping Down; Connecting An Interface (Option) To The Air Conditioner - Mitsubishi Electric MLZ-KY20VG Installationsanleitung

6. PUMPING DOWN

Refer to the procedures indicated in the installation manual of the outdoor unit.
When the refrigeration circuit has a leak, do not execute pump down with the
compressor.
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.

7. CONNECTING AN INTERFACE (OPTION) TO THE AIR CONDITIONER

• Connect an interface to the indoor control board of an air conditioner with a connecting cable.
• Cutting or extending the connecting cable of the interface results in defects in connecting. Do not bundle the connecting cable together with power supply cord,
indoor/outdoor connecting wire, and/or earth wire. Keep as much distance as possible between the connecting cable and those wires.
• The thin part of the connecting cable should be stored and placed where customers cannot touch it.
1) Fix the cable tie to the connecting cable at 200 mm from the edge of the insulation coating part. Attach the mounting cord clamp (medium) to the interface side of
the cable tie.
Mounting cord clamp (medium)
2) Remove the grille. (If the grille has been already installed)
3) Remove the disp cover.
Refer to 2-4. CONNECTING WIRES FOR INDOOR UNIT.
4) Slide out the indoor control board, and connect the connecting cable to CN105 on the indoor control board.
5) Remove the screw shown in the photo blow. Route the connecting cable according to the photo below. Fix the mounting cord clamp (medium), which has attached
to the connecting cable, with the screw.
6) Reinstall the indoor control board and the disp cover.
7) Reinstall the grille.
Fix the connecting cable at the prescribed position securely.
Incorrect installation may cause electric shock, fire, and/or malfunction.
WARNING
Thin part of the connecting cable. Place this part
where customers cannot touch it.
Room air conditioner
Indoor control board CN105
WARNING
Main body of an interface
Connector
Thick part of the connecting cable
Cable tie
200 mm
Insulation coating part
Connecting cable
Mounting cord clamp
Screw
(medium)
Cable tie
EN-10
EN