Wiring Procedure - Mitsubishi Electric AHU-KIT-SP Manual

15. Wiring procedure

AHU interface incorporates an earth connection for functional purposes only.
Be sure to connect the functional ground wire to the sheet metal of the enclosure when connecting wires to the power supply terminal block.
Be sure to ground the sheet-metal part of the enclosure.
When removing wires from the enclosure, secure or cover the wires with conduit to prevent tension from being applied to the terminals.
Do not turn ON the power supply (power switch) until all the work is completed.
Except for the accessories, obtain other components locally.
If the supply cord is damaged, it must be replaced by the manufacturer, the service agent or similarly qualified persons to avoid any hazards.
Use only copper wires.
Do not use any supply cord lighter than the one specified in parentheses for each type below
- ordinary tough rubber sheathed cord (code designation 60245 IEC 53).
Do not use anything lighter than polychloroprene sheathed flexible cord (code designation 60245 IEC57) for supply cords of appliances parts for outdoor use.
Cascade connection (X7) signal lines
Wire diameter: 0.75mm 2 – 1.25mm 2
The line length between Master and Slave must be less than 2 m.
When using a cable longer than 2 m, use a shielded cable for the cascade signal line.
Wire the grounding of the body to the sheet metal of the enclosure.
Total wiring length of cascade connection can be up to 10 m.
Wiring to each connector (X1-X5)
2
Wire diameter: 0.3mm or more
It is possible to enter into the superlink system by connecting the remote control communication line of SC-ADNA-E to X1.
Use a shielded cable when operating a cable longer than 2 m.
Power supply wire & functional ground wire (X0)
Wind the ferrite core supplied with the ground wire for 6 turns (5 loops) and connect it to the sheet metal of the enclosure.
2
Wire diameter: 0.75mm or more
Line length: 40 cm or more (recommendation)
MODEL NAME
Air Handling Unit Interface
MODEL TYPE
AHU-KIT-SP
ISSUE CLASSIFICATION
INSTALLATION
MORIKAWA
DWG NO.
REV.MARK PAGE
PSZ000Z308
21.09.17
37/38