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Mammoth HydroBank MS Installation, Operation And Maintenance Manual
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HydroBank MS Installation and Operation Manual MAMM-WSHP-IOM-1MSA (October 2014) 13Ventilation Air ConsiderationsVentilation Air ConsiderationsOutside air may be required for ventilation. Refer tolocal codes. The temperature of the ventilation air mustbe controlled so that the mixture of outside air andreturn air entering the unit is within application limits. Itis recommended that the ventilation air inlet be closedduring unoccupied periods (i.e. night setback).The ventilation air system is typically a separate build-ing subsystem with its own distribution ductwork. Simpleintroduction of the outside air into each return air ple-num chamber is recommended, reasonably close to theunit air inlet. Do not duct outside air directly to the unitinlet. Provide sufficient distance for the thorough mixingof outside and return air.Electrical ConnectionsAll field installed wiring must comply with all local andnational electrical codes. See “Electrical Data” startingon page 34 for applicable fuse or breaker sizes. Con-sult the wiring diagram provided with your unit for thefield connections required.WARNING! Electric shock and movingequipment hazard. Can cause severe injuryor death. Lock and tag out all electric powerduring installation.Wiring to the unit is routed through the electrical knock-outs in the front corner of the unit. See Figure 12 andFigure 13. For detailed information on knockout loca-tions and sizes, see the dimensional drawings providedwith your unit submittal package.Figure 12: Horizontal Unit Electrical ConnectionsField controlwiringPower wiringFigure 13: Vertical Unit Electrical ConnectionsPowerwiringField controlwiringOn units equpped with the non-fused disconnect option,power wiring is brought in the through the knockout inthe top of the junction box. See Figure 14.Figure 14: Non-Fused Disconnect Electrical ConnectionsHorizontal UnitField controlwiringPower wiringVertical UnitField controlwiringPower wiringOperating VoltageIncoming power supply must comply with the data inTable 3. Unit operation outside of the minimum or maxi-mum range is not recommended and will result in pre-mature component failure.IMPORTANT! Units operating with over- or under-voltage conditions for extended periods of time willexperience premature component failure. Three-phase system imbalance should not exceed 2%.Table 3: Operating voltagesMinimum Maximum208-230/60/3 197 volts 253 volts460/60/3 414 volts 506 volts380-415/50/3 342 volts 418 volts575/60/3 515 volts 632 volts |
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