Panasonic CZ-256ESMC2 Operation Manual

Also see for CZ-256ESMC2: Operation manual Operation manual

Contents

9816 Installation (Electric) and Service Instructions3 WiringAlways shut off the power supply (breaker) before installing or uninstalling.Connection terminals100-240V~:LINK 1/2 : Inter-unit control wire (HBS)P1 : Pulse meter input (Gas flow meter, fuel meter)Terminal names and usesCommunication adaptor control wire (RS-485)ADAPT +/-P2 - 3 : Pulse meter input (Electricity meter)DI 1 : All stop inputDI 2 : All start inputDI 3 : reservedDO 1 : All alarm outputDO 2 : All operation outputPower connectorpanelCommunicationsconnector panelBasic wiring diagramWire up the communication adaptor control wire and Inter-unit controlwire as shown in the figure below.Intelligent ControllerInter-unit control wireInter-unit control wireCommunicationadaptor controlwireG: Gas flowmeterW: ElectricitymeterW GCommunication adaptor* When connecting link systems (inter-unit control wires), always connectbeginning with LINK1 and LINK2 on the Intelligent Controller. Up to 4 linksystems can be connected.(1) Power supply connectionConnect the power supply to the commercial power mains(100 to 240 V AC), using a dedicated circuit.Connect the power supply lines to the L and N power supplyterminals (the power supply neutral to the N terminal).Connect an earth ground line to the power supplyterminal.Attach the power supply terminal board cover.Firmly secure the power lines using the supplied cable tie.(2) Signal connection Connect indoor and outdoor signals using 0.5 - 2.0 mm 2two-conductor cable. Overall length of each signal line should be 1 km or less. Use the shielded wire for inter-unit control wiring. Do not run signal lines through the same conduit aspower supply lines, use the same cable as the powersupply, or run close to the power supply lines (maintainat least 30 cm separation, if cabled outside the controlbox). Do not run the LINK1 and LINK2 signal lines through thesame conduit, use the same cable for wiring, or run thesignal lines close together. Earth the shield wire of the Inter-unit control wire (U1-U2).Wiring procedure Inter-unit control wire (no polarity)Connect signal terminals 0 and 1 (LINK1) to the Inter-unit control wire terminals of an indoor or outdoor unit.If using two link systems for connection, connect signalterminals 3 and 4 (LINK2) in the same manner. Communication adaptor control lines (note + and -polarity)Up to seven external communication adaptors can beconnected to the control unit (see figure at left). However,a maximum of four links is supported. Be sure to followthe communications adaptor Installation Instructionswhen connecting the adaptors. Make sure that powerlines are not connected to the communication adaptorterminals or Inter-unit control wire terminals.* If the power voltage is accidentally applied to the Inter-unit control wire terminals, a fuse will blow to protect thecontroller board. If this happens, disconnect the powerline, and connect the Inter-unit control wire to the spareU2 terminal. (The other signal line can stay connected tothe U1 terminal.) The spare U2 terminals are right next tothe main U2 terminals.Use terminal 2 (LINK1-U2) instead of terminal 1Use terminal 5 (LINK2-U2) instead of terminal 4Power supply terminalboard coverCable tieUse this screw when connecting the shieldfor the Inter-unit control wiring to ground.