Panasonic U-72MF2U9 Technical Data Manual

Also see for U-120MF2U9: Installation instructions Operating instructions Installation instructions Service manual

Design of 3WAY VRF SYSTEM2 - 521234567898-3-5-4. Procedure1.2.3.4.Connect the power supply wire to the solenoid valve kit, usingthe Class wire.(Fig. 3)Connect the solenoid valve kit to the solenoid valve relay kit,using the Class wire shown in Table 19. (Fig. 2, Fig. 3)Connect the solenoid valve relay kit to the indoor unit, usingthe supplied connecting wire. (Fig. 1, Fig. 2)The left-over wires connected to the solenoid valve relay kitshould be tied up in a bundle of wires by the supplied wireholder not to leave the wires loose as shown in the diagramat right. (Fig. 2)ⅠⅡSolenoid valve relay kitSolenoid valve kit1 2 3 4 5Class3-Way connect wire(supplied)ClassControl wire(field supplied)* Wiring fixed with clamper* Wiring fixedwith clamperⅡⅡFig. 2Clamper(supplied)ClamperWire* Wiring fixed with clamperFig. 3* Wiring fixedwith clamperGround* Wiring fixedwith clamperClass Power supply(field supplied)ⅠConduit(field supplied)Class Control wire(field supplied)ⅡHow to connect wiring to the terminal■ For stranded wiring(1)(2)(3)(4)Cut the wire end with cutting pliers, then strip the insulation to expose the stranded wiring about 25/64" (10 mm) andtightly twist the wire ends. (Fig. 4)Using a Phillips head screwdriver, remove the terminal screw(s) on the terminal board.Using a ring connector fastener or pliers, securely clamp each stripped wire end with a ring pressure terminal.Place the ring pressure terminal, and replace and tighten the removed terminal screw using a screwdriver. (Fig. 5)Stranded wireStrip 25/64"(10 mm)RingpressureterminalSpecialwasher ScrewRing pressureterminalWire Terminal boardScrew andSpecial washerWireRingpressureterminalFig. 4 Fig. 5CAUTION Loose wiring may cause the terminal to overheat or result in unit malfunction.A fire hazard may also occur.Therefore, ensure that all wiring is tightly connected.8-3-5-5. Installation to the Solenoid Valve Relay KitInstall the solenoid valve relay kit into the indoor unit and fix it using a Philips-head screwdriver.WARNING Do not install outside the building and the area where the water is splashed. Failure to doso could result in product or property damage.Do not handle or touch the unit with wet hands. Failure to do so could result in electric shock.●●Regarding the solenoid valve relay kit, refer to the indoor unit Installation Instructions.*8. Optional Parts