PRECAUTIONSInstallation and servicing of air conditioning equipment can be hazardous due to system pressure and electric components. Only trained and qualified servicepersonnel should install, repair or service air conditioning equipment.Untrained personnel can perform basic maintenance functions of cleaning coils and filters, and replacing filters.All other operations should be performed by trained service personnel. When working on air conditioning equipment, observe precautions in the literature, tags andlabels attached to the unit and other safety precautions that may apply. Follow all safety codes. Wear glasses and work gloves. Use a quenching cloth for brazing anddetaching brazed connections. Have a fire extinguisher available for all brazing operations.• Do not install by connecting them to other indoor or outdoor units without consulting a Carrier or other competent air conditioning engineers.Mismatching of the units and incompatibility between control devices in the two units could lead to damage of both unit and voiding of the Carrier warranty.Carrier declines any responsibility, and warranty shall be void if these installation instructions are not observed or if change are made to the electricalconnections.Contact your Carrier distributor if you need futher help.• Before performing service or maintenance operations on the system, turn off the main power switches and breaker of the unit.Electric shock may cause personal injury.“If the supply cord is damaged, contact Carrier distributor to arrange for replacement.”WARNINGDo not switch off the split system by disconnecting the electric power supply. The unit must always be switched off using the remote control.WARNINGTO DISCONNECT THE APPLIANCE FROM THE MAIN SUPPLY.This appliance must be connected to the main by means of a circuit breaker or a switch with a contact separation of at least 3 min.If this is not possible, a power supply plug with earth must be used. This plug must be easily accessible after installation. The plug must be disconnected fromthe power supply socket in order to disconnect the appliance completely from the main. The appliance must be positioned so that the plug is accessible.Check that all current national safety code requirements have been followed for the installaltion. In particular ensure that a properly sized and connectedground wire is in place.CAUTION2SAFETY CONSIDERATIONS