Panasonic U-5MX3XPQ Installation Manual

Contents

U-5~48MX3Urban Multi air conditioner4PW16235-1CInstallation manual15Picking power line and transmission line■ Be sure to let the power line and the transmission line passthrough a conduit hole.■ Pick the power line from the upper hole on the left side plate,from the front position of the main unit (through the conduit holeof the wiring mounting plate) or from a knock out hole to bemade in the unit's bottom plate. (See figure 18)Precautions when knocking out knock holes■ To punch a knock hole, hit on it with a hammer.■ After knocking out the holes, we recommend you paint theedges and areas around the edges using the repair paint toprevent rusting.■ When passing electrical wiring through the knock holes, removeany burrs from the knock holes and wrap the wiring withprotective tape to prevent damage.Never connect 400 V to the terminal block of the interconnectingwiring. Doing so will break the entire system.■ The wiring from the indoor units must be connected to the F1/F2(In-Out) terminals on the PC board in the outdoor unit.■ After installing the interconnecting wires inside the unit, wrapthem along with the on-site refrigerant pipes using finishing tape,as shown in figure 20.For the above wiring, always use vinyl cords with 0.75 to 1.25 mm 2sheath or cables (2 core wires). (3 core wire cables are allowable forthe cooler/heater changeover remote controller only.)[In case of U-18~48MX3]■ The interconnecting wiring between the outdoor units in thesame pipe line must be connected to the Q1/Q2 (Out Multi)terminals. Connecting the wires to the F1/F2 (Out-Out) terminalsresults in system malfunction.■ The wiring for the other lines must be connected to the F1/F2(Out-Out) terminals of the P-board in the outdoor unit to whichthe interconnecting wiring for the indoor units is connected.■ The base unit is the outdoor unit to which the interconnectingwiring for the indoor units is connected.■ The interconnecting wiring between the outdoor units must be≤30 m.See the paragraph "Fixing field line connection" on page 14A Electric wiring diagram. Printed on the back of the electric box lid.1 Cut off the shaded zones before use.2 Through cover3 Power wiring between outdoor units(When the wiring is routed out through the lateral panel.)4 Set apart5 Transmission wire6 Knockout hole7 Power wiring between outdoor units (when wiring is routed through thefront panel)1 Knockout hole2 If there are any possibilities that small animals enter the systemthrough the knock holes, plug the holes with packing materials (tobe prepared on-site).3 Burr■ Use a power wire pipe for the power wiring.■ Outside the unit, make sure the weak low voltageelectric wiring (i.e. for the remote control, betweenunits, etc.) and the high voltage electric wiring do notpass near each other, keeping them at least 50 mmapart. Proximity may cause electrical interference,malfunctions, and breakage.■ Be sure to connect the power wiring to the powerwiring terminal block and secure it as described under"Field line connection" on page 13.■ Inter-unit wiring should be secured as described in"Field line connection" in chapter "7.5. Examples" onpage 13.• Secure the wiring with the accessory clamps so that itdoes not touch the piping.• Make sure the wiring and the electric box lid do notstick up above the structure, and close the coverfirmly.1 1 2 3 3 3211 Liquid pipe2 Gas pipe3 Interconnecting wiring4 Insulator5 Finishing tape■ Be sure to keep the power line and transmission lineapart from each other.■ Be careful about polarity of the transmission line.■ Make sure that the transmission line is clamped asshown in the figure in "Field line connection" inchapter "7.5. Examples" on page 13.■ Check that wiring lines do not make contact withrefrigerant piping.■ Firmly close the lid and arrange the electrical wires soas to prevent the lid or other parts from coming loose.■ When you don’t use a wire conduit, be sure to protectthe wires with vinyl tubes etc, to prevent the edge ofthe knock-out hole from cutting the wires.