Évaluations - 3, GPA: 4.3 ( )

Fabricant : Carrier Taille : 613.71 kb Nom Fichier : Langue d'enseignement:

II fan cycling. Lead-lag compressor control to even out run time. Self-diagnostic run test confirms control and component operation at unit commissioning. Self-diagnostic troubleshooting codes indicate the reason unit tripped to expedite unit repair. Codes expand to English Text. Control of a two-speed supply fan motor on CV applications. (Two- speed motor available on Special Order.) Building Purge Mode flushes building interior with outdoor air to remove contaminants before occupancy. Adaptive Optimal Start minimizes the amount of time and energy required before entering the occupied mode. Unoccupied Mode Free Cooling — units with optimal economizer will utilize free cooling whenever possible to maintain the unoccupied set point. Input/Output of data and monitoring of alarms can be done remotely using Building Supervisor, or at the unit using the accessory HSIO module. Delayed Mechanical Cooling — units with optional economizer will utilize cooling to cool the space 3 degrees below the occupied set point to delay the need for mechanical cooling. ADDITIONAL CONTROL FUNCTIONS AVAILABLE THROUGH FACTORY-INSTALLED ‘‘OPTION MODULE’’ Provides a discrete output with occupancy control for use as specified by the customer. Controls a field installed humidifier usinga4to20mA or 2-stage output. Requires accessory humidity sensor. Smoke Control functions (Building Pressurization and Smoke Purge) are provided through software. Terminals are provided to interface with field supplied smoke/fire panel. Providesa4to20mA output to direct or reverse proportional hot water control valve for field supplied hydronic heating coil. Requires a field supplied freezestat to protect coil. Factory installed suction and discharge pressure transducers and suction temperature thermistors allow remote monitoring of these parameters and superheat to provide enhanced remote diagnostics. Differential enthalpy control can be provided using field installed accessory humidity sensors. Economizer control field configurable to: — Maintain a minimum economizer set point position, OR — Maintain the minimum economizer position based on input from an IAQ sensor (field supplied0-10 volt), OR — Maintain a constant cfm of outdoor air intake (Requires accessory Outdoor Air CFM package), OR — Look at all three above and maintain minimum economizer position based on the dominant parameter. UNIT FEATURES Large hinged access doors. Standard one-year product warranty. Standard unit as factory-assembled is listed by ETL and/or ETL, Canada. Units are rated in accordance with ARI Standard 360. 115-volt and 24-volt control circuit. Semi-hermetic Carrier compressors. Crankcase heaters. Circuit breaker protection for all power components. Compressor protection includes high and low pressure cutouts. Single low rpm supply fan with 2-in. deflection springs under fan sled. High efficiency indoor motors (supply and exhaust). Tuff-Skin Rx anti-microbial insulation. Sloped condensate pan. Manual adjustable out...

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