(1) Observe all local regulations.
(2) After connecting the cables to the terminal block, siphon and secure the cables with clamps.
(3) Do not turn on the power to the indoor unit until the vacuum in the refrigerant tubes is complete.
(4) Keep the refrigerant piping system and the control wiring system together.
(5) Install a grounded switch for possible defects in the power supply according to local regulations.
(6) Always connect a ground wire. (Grounding work)
