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Toshiba MMW-AP0271LQ-TR Installation Manual
Also see for MMW-AP0271LQ-TR: Service manual
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– 25 –11Test run Before test run• Before turning on the power supply, carry out thefollowing procedure.1) By using 500 V-megger, check that resistanceof 1 MΩ or more exists between the terminalblock L to N and the earth (grounding).If resistance of less than 1 MΩ is detected, donot run the unit.2) Check the valve of the outdoor unit beingopened fully.• To protect the compressor at activation time, leavepower-ON for 12 hours or more before operating.• Do not press the electromagnetic contactor toforcibly perform a test run. (This is very dangerousbecause the protective device does not work.)• Before starting a test run, set addresses by followingthe Installation Manual supplied with the outdoorunit.• Before carrying out a test run, complete the watersupply (10 °C or more) to the water pipe system andthe wiring for the pump.The entire system stops by detecting an error (checkcode: A01) when the water is not supplied to the HotWater Module and when the water does notcirculate. Execute a test runOperate the unit with the wired remote controller asusual.For the procedure of the operation, refer to theattached Owner’s Manual to the outdoor unit.A forced test run can be executed in the followingprocedure even if the operation stops by thermostat-OFF.In order to prevent a serial operation, the forced testrun is released after 60 minutes have passed andreturns to the usual operation.CAUTIONDo not use the forced test run forcases other than the test runbecause it applies an excessiveload to the devices.1 Push button for 4 seconds or more.[TEST] is displayed on the display part andthe selection of mode in the test mode ispermitted.2 Push button.3 Select the operation mode withbutton, [ Heat].• Cannot select the hot water module in a modeother than [ Heat].• The temperature controlling function does notwork during test run.• The detection of error is performed as usual.4 After the test run, push button tostop a test run.(Display part is same as procedure 1.)5 Push check button to cancel (releasefrom) the test run mode.([TEST] disappears on the display and the statusreturns to a normal.)2, 431,5 Items to check before conducting a trial operationCheck the following items before the trial operation. The numbers in (parentheses) are the chapter numbers in thetable of contents of the installation manual.*1 Do not operate the air conditioner (run the compressor) before the address to the hot water module is fixed.Doing so will cause the heat exchanger in the hot water module to freeze, rupture, and leak water.*2 Set DIP switch 4 of SW09 on the P.C. board of the header outdoor unit to "ON" (factory default is "OFF").The VRF system will be stopped to avoid water freezing when the power supply is disconnected.NOTEBefore you run the compressor, always confirm that the hot water module is operable (power on, address fixed,communication wiring complete).Failure to do this will cause the heat exchanger in the hot water module to freeze, rupture, and leak water.CheckInstallation workIs the equipment attached to the legs with bolts? (See chapter 5.)Is there sufficient open space around the equipment for servicing? (Seechapter 5.)Have the criteria for selecting a location to install the equipment been met?(See chapter 4.)Piping workAre all of the pipes connected correctly? (See chapter 5.)Are there no water leaks?Is the flow rate suitable? (See chapter 6.)Is the strainer in a suitable location? (See chapters 3 and 6.)Is the line heater in a suitable location and is the flow rate suitable? (Seechapters 3 and 6.)Have suitable safety devices for pressure relief and expansion tanks beeninstalled? (See chapters 3 and 6.)Is the shut-off valve in a suitable location? (See chapters 3 and 6.)Is the air vent valve in a suitable location? (See chapters 3 and 6.)Is the piping material suitably heat resistant and corrosion resistant? (Seechapters 6 to 8.)Can water discharge through the drain? (See chapter 7.)Was the heat-retention work done suitably? (See chapters 6 to 8.)Electric wiring workIs the electric wiring connected correctly? (See chapter 9.)Is the electric wiring thick enough? (See chapter 9.)Is the power fed from a dedicated ground fault circuit breaker?Is the output terminal wired? (See chapter 9.)Is the addressed fixed? (*1)Outdoor unit board settings Has DIP switch 4 of SW09 on the interface board of the header outdoorunit been set to "ON" (factory default is "OFF")? (See chapter 9.) (*2)49-EN 50-EN |
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