13
2.
Do not connect wires of different gauge to the same grounding terminal. Looseness in the connection may
deteriorate protection.
3.
Keep transmission wiring at least 5’’ away from power supply wiring. The equipment may malfunction if
subjected to electrical (external) noise.
4.
For remote controller wiring, refer to the “INSTALLATION MANUAL OF REMOTE CONTROLLER”
attached to the remote controller.
5.
Never connect power supply wiring to the terminal board for transmission wiring. A mistake of the sort
could damage the entire system.
6.
Use only specified wire and tightly connect wires to terminals. Be careful wires do not place external stress
on terminals. Keep wiring in neat order and so as not to obstruct other equipment such as popping open
the service cover. Make sure the cover closes tight. Incomplete connections could result in overheating,
and in worse case, electric shock or fire.
7.
Use 2-core wires for branch wiring.
When wiring more than 2 indoor units and a remote controller with the same 3-core wire (or other multi-
core wire), units sometimes stop unexpectedly because of trouble.
(3-core wires can be used only for the cool/heat selector)
8.
Connect the cooling unit to pins F1 and F2 (outdoor unit) in the final BS unit.
EXAMPLE OF TRANSMISSION LINE CONNECTION
•
Example of connecting transmission wiring.
Connect the transmission wirings as shown in the Fig. 5.
