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Фрагмент инструкции
1997 Carrier Corporation • Syracuse, New York 13221 Form 50JB-1SB New Printed in U.S.A. 12-97 Catalog No. 515-074 Date: Supersedes: 50JB034, 038, 044, 048, 054, 064 SINGLE-PACKAGE COOLING UNITS, EXTENDED CHASSIS PRODUCT INTEGRATED CONTROLS 50JB Rev.: JOB NAME: LOCATION: BUYER: BUYER P.O. # CARRIER # UNIT NUMBER: MODEL NUMBER: PERFORMANCE DATA CERTIFIED BY: DATE: DESCRIPTION 50JB units are completely packaged, pre-wired and precharged cooling only units with PRODUCT INTEGRATED CONTROLS. 50JB units are built for horizontal supply and return applications. Their waterproof construction makes them ideally suited for installation on the accessory roof curb which is NRCA approved or slab mounting. Units are either CONSTANT VOLUME or VARIABLE AIR VOLUME depending on the factory- installed options selected. Units include space and coil tracks downstream of evaporator for field or factory installation of auxiliary devices. PRODUCT INTEGRATED CONTROL FEATURES STANDARD CONTROL FUNCTIONS Unit compatible with CARRIER COMFORT NETWORK or stand alone operation. Constant Volume or Variable Air Volume control. Four to six stages of compressor unloading possible. Supply fan control based on occupancy schedule using 365-day electronic timeclock with holiday scheduling. Time schedule override through the space temperature sensor provided with the unit. Compatible with 37H and 45 Series PIC terminals to form a Digital Air Volume system (DAV). Building pressurization control in conjunction with modulating power exhaust option. Supply duct static pressure controlled through inlet guide vanes or field or factory supplied inverter. Head pressure control to .20° F. Head pressure controlled by saturated condensing temperature, low ambient control utilizes Motormaster. 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 custo...
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