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Toshiba RAV-SM564UTP-E Installation Manual
Also see for RAV-SM1104UTP-E (TR): Service manualService manualInstallation manualService manual
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– 38 –• Use the tightening torque levels as listed in thefollowing table.• Tightening torque of flare pipe connections.Pressure of R410A is higher than that of R22.(Approx. 1.6 times) Therefore, using a torquewrench, tighten the flare pipe connecting sectionswhich connect the indoor and outdoor units of thespecified tightening torque.Incorrect connections may cause not only a gas leak,but also a trouble of the refrigeration cycle.CAUTIONTightening with an excessive torque may crack the nutdepending on installation conditions. EvacuationPerform vacuuming from the charge port of valve of theoutdoor unit by using a vacuum pump.For details, follow to the Installation Manual attached tothe outdoor unit.• Do not use the refrigerant sealed in the outdoor unitfor evacuation.REQUIREMENTFor the tools such as charge hose, use thosemanufactured exclusively for R410A.Refrigerant amount to be addedFor addition of the refrigerant, add refrigerant “R410A”referring to the attached Installation Manual of outdoorunit.Use a scale to charge the refrigerant of specifiedamount.REQUIREMENT• Charging an excessive or too little amount ofrefrigerant causes a trouble of the compressor.Charge the refrigerant of specified amount.• A personnel who charged the refrigerant should writedown the pipe length and the added refrigerantamount in the F-GAS label of the outdoor unit. It isnecessary to fix the compressor and refrigerationcycle malfunction.Open the valve fullyOpen the valve of the outdoor unit fully. A 4 mm-hexagonal wrench is required for opening the valve.For details, refer to the Installation Manual attached tothe outdoor unit.Gas leak checkCheck with a leak detector or soap water whether gasleaks or not, from the pipe connecting section or cap ofthe valve.REQUIREMENTUse a leak detector manufactured exclusively for HFCrefrigerant (R410A, R134a).Heat insulation processApply heat insulation for the pipes separately at liquidside and gas side.• For the heat insulation to the pipes at gas side, usethe material with heat-resisting temperature 120 °Cor higher.• To use the attached heat insulation pipe, apply theheat insulation to the pipe connecting section of theindoor unit securely without gap.REQUIREMENT• Apply the heat insulation to the pipe connectingsection of the indoor unit securely up to the rootwithout exposure of the pipe. (The pipe exposed to theoutside causes water leak.)• Wrap heat insulator with its slits facing up (ceilingside).Outer dia. of connectingpipe (mm) Tightening torque (N•m)6.4 14 to 18 (1.4 to 1.8 kgf•m)9.5 34 to 42 (3.4 to 4.2 kgf•m)12.7 49 to 61 (4.9 to 6.1 kgf•m)15.9 63 to 77 (6.3 to 7.7 kgf•m)Indoor unitUnionHeat insulationpipe(Accessory)Flare nutHeat insulatorof the pipeWrap the pipe with the attached heat insulatorwithout any gap between the indoor unit.The seam must be faced upward(ceiling side).Banding band(locallyprocured)7 Electrical connectionWARNING• Use the specified wires for wiring connect the terminals. Securely fix them to prevent external forces appliedto the terminals from affecting the terminals.Incomplete connection or fixation may cause a fire or other trouble.• Connect earth wire. (grounding work)Incomplete grounding cause an electric shock.Do not connect earth wires to gas pipes, water pipes, lightning conductor or telephone earth wires.• Appliance shall be installed in accordance with national wiring regulations.Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire.CAUTION• For power supply specifications, follow the Installation Manual of outdoor unit.• Do not connect 220 – 240 V power to the terminal blocks ( , ) for control wiring.Otherwise, the system will fail.• Do not damage or scratch the conductive core and inner insulator of power and system interconnection wires duringpeeling them.• Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe.The coating may melt resulting in an accident.• Do not turn on the power of the indoor unit until vacuuming of the refrigerant pipes completes. System interconnection wires specifications*Number of wire x wire sizeRemote controller wiringCAUTIONThe remote controller wire and system interconnection wires cannot be parallel to contact each other and cannot bestored in the same conduits. If doing so, a trouble may be caused on the control system due to noise or other factor.Systeminterconnectionwires*4 x 1.5 mm2 or more(H07 RN-F or 60245 IEC 66)Up to70 mRemote controller wiring, remote controller inter-unitwiring Wire size: 2 × 0.5 to 2.0 mm 2Total wire length of remote controller wiring and remotecontroller inter-unit wiring = L + L1 + L2 + … LnIn case of wired type only Up to 500 mIn case of wireless typeincluded Up to 400 mTotal wire length of remote controller inter-unit wiring = L1 + L2 + … Ln Up to 200 mA BL1LL2 LnIndoor unitRemote controller inter-unit wiringIndoor unit Indoor unit Indoor unitRemotecontroller(Max. 8 units)Remotecontrollerwiring75-EN 76-EN+001114119401_01EN.book Page 38 Wednesday, October 31, 2012 4:56 PM |
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