Carrier 53QG18-H Installation Manual

37CONNECTING ELECTRICAL WIRING (Cont.)17-2 ELECTRICAL WIRING BETWEEN INDOOR UNIT, OUTDOOR UNITAND CIRCUIT BREAKER OF AIR CONDITIONERAll electrical connections between the outdoor unit, indoor unit and circuit breaker are theresponsibility of the qualified installer and must be done according to national electricalwiring regulations to avoid fire due to short circuiting.- Both of the outdoor and indoor units leave the factory with complete internal electrical wiring.Do not change any internal electrical wiring of both units.- A qualified electrical technician should carry out the electrical connections.- It is very important before making the electrical connections between the indoor, outdoor units,and the power supply, to pay attention to the following safety instructions:(A) Operating VoltageThe operating voltage of electrical power supply should be within the limits of voltage mentioned on unitnameplate data.Shown on the indoor and outdoor units of the air conditioner.(B) Field Electrical Connection Cables* Do not use electrical connection cords except the approved one for use with air conditioners.* Each cable should be a complete unit, without extensions.(C) Electrical Connectionsa. Check that the electrical connections between the terminal blocks of indoor and outdoor units are inaccordance with the wiring diagrams and caution field electrical wiring contained in the manual.Miswiring may cause malfunction of the system and an electric shock.b. Do not connect wires when power is ON.c. Make ground connection prior to any other electrical connections in accordance with the electricallocal codes.d. Make electrical connections between outdoor and indoor units prior to proceeding to mains supplyconnection.e. Before proceeding with the unit connection to the mains supply locates live L and neutral N, thenmake connections as shown in the wiring diagram.Be sure that the live and neutral wire connected respectively to the Live (L) and the Neutral (N)terminals of terminal block of outdoor units.f. Ensure that mains supply connection is made through a switch that disconnects all poles, withcontact gap of at least 3 mm.g. Avoid slack connections of the electrical cords when connected to the terminal blocks of indoorand outdoor units. and also to circuit breaker These slack connections lead to voltage drop and unitmalfunctions. Every wire must be connected firmly.WARNING!