Daikin GYEQ20AN Service Manual page 71

SiAUY361411EA
Wiring Connection
About power supply wiring
Use specified cables for wiring work. The cables should be perfectly connected to the appropriate
connectors and fastened tightly so that the terminal connectors will not be exposed to external
forces via the cables.
Be sure to install a ground-fault circuit breaker designed specifically for use with air conditioners.
Do not use single-core cables, which can cause incomplete contact or damage to the terminal block.
Do not use a "cord" for power supply wiring.
Example: You cannot use a VCTF cord, but you can use a VV cable.
Both outdoor and indoor units should be grounded.
Power must be supplied via a dedicated branch circuit.
For indoor unit power supply wiring, you cannot connect two different-diameter cables to the power
supply terminal block. (Should such two cables be connected, they would likely loosen during use,
possibly resulting in abnormal heat generation.) See the figure below.
Single phase 200 V
(Not 240 V)
Single phase 220~240 V
Connecting the single phase 200 V power supply cable
Be sure to do all grounding work. At installation time, you must perform grounding work to prevent
electrostatic charge and interference.
The maximum connectable size of the terminal block is 6 mm
apply.
Device Overview
Leakage
circuit breaker
Leakage
circuit breaker
Earthing cable
Power supply cable
068552-00EN00
2. Wiring Connection and Capacity
Outdoor
unit
Manual switch (switch + fuse)
or wiring circuit breaker
BS BS
unit unit
2
, but some types of cables may not
– 3 –
Wiring Manual
Indoor Indoor
unit unit
032772-02E
0FGHP-EN0821 DGJ002
60