Carrier 42N_S Installation And Operation Manual

Also see for 42N E Series: Installation and operation manual Installation and operation manual

Carrier 42N_S Installation And Operation Manual Manual pdf 31 page image

3142N_S 42N_EEnglishThe units have tangential/centrifugal motors with selectable speeds.There are 5 speeds available:For sizes S15-S20-S30-S45, there are 5 available speeds Ultra Low- Low-Medium-High-Super High (see table on the right).All machines are configured at the factory as follows:ULTRA LOW - MEDIUM – SUPER HIGH.In the case of particular needs, it is possible to move the speedconnections (with Faston quick-connectors) following the enclosedtable and relative drawing (see Fig. 29).For sizes S26-S42-S65 3 speeds are available: Low-Medium-High (seetab. on the side).Fan MotorLow Energy Consumption Fan Motor versionThe fan coil units of the series 42NE… can ensure a 0% - 100% constantair flow modulation (and therefore the thermal and refrigeratingcapacity) thanks to the Inverter technology combined with the lastgeneration of high energy-efficient electric motors (EC brushless). Thisenables a constant control on the power supplied according to theroom that need to be conditioned. The result is 50% electric energysaving compared to traditional 3-speed asynchronous motors and aIMPORTANT:The following maintenance operations should be carried out byqualified personnel.Disconnect the mains power supply prior to any maintenanceoperations or prior to handling any internal parts of the unit.Condensate drainingDuring the summer season check that the condensate drain is free fromdust and lint that could clog it, causing condensate water overflow.Heat exchanger coilAt the beginning of any winter and summer season it is advisable tocheck that the coil fins are not clogged with dust, lint or other foreignmatter.Clean the heat exchanger after having removed the supply grille, takingcare not to damage the fins.MotorThe motor is permanently lubricated.Therefore no periodical maintenance is required.considerable reduction of acoustic emissions.The new range of fan coil units 42NE is equipped with 4 Low EnergyConsumption Fan Motors one of which is tangential and 3 centrifugal.Low Energy Consumption Fan MotorMaintenanceMotor 5 speedMOTOR SPEED CABLE COLORENGINEFACTORYCONNECTIONONLY FOR SIZE 15WHIT ELECTRICHEATERULTRA LOW RED RED -LOW YELLOW -MEDIUM WHITE WHITE REDHIGH ORANGE WHITESUPER HIGH BLACK BLACK BLACKMOTOR NEUTRAL BLUE BLUE BLUEMotor 3 speedMOTOR SPEED CABLE COLORENGINEFACTORYCONNECTIONHIGH BLACK BLACKMEDIUM WHITE WHITELOW RED REDMOTOR NEUTRAL BLUE BLUE