Carrier 30GTN Product Data

Also see for 30GTN: Service and troubleshooting guide Installation instructions Installation instructions

Contents

Carrier 30GTN Product Data Manual pdf 36 page image

36Guide specificationsReciprocating Air-Cooled Liquid ChillerHVAC Guide SpecificationsSize Range: 50 to 400 Tons (176 to 1408 kW) NominalCarrier Model Number: 30GTN,GTR,GBN,GBRPart 1 — General1.01 SYSTEM DESCRIPTIONEasy-to-use, microprocessor-controlled air-cooledliquid chiller utilizing reciprocating compressors andlong-stroke electronic expansion valves.1.02 QUALITY ASSURANCEA. Unit shall be manufactured in a facilityregistered to ISO 9001 (International StandardsOrganization) manufacturing quality standard.E. Unit operation shall be fully tested at the factory.1.03 DELIVERY, STORAGE, AND HANDLINGA. Unit shall be stored and handled per unitmanufacturer’s recommendations.B. Unit controls shall be capable of withstanding150 F (66 C) storage temperature in the controlcompartment for an indefinite period of time.Part 2 — Products2.01 EQUIPMENTA. General:Factory-assembled, single piece, air-cooledliquid chiller. Contained within the unit cabinetshall be all factory wiring, piping, controls,refrigerant charge (R-22), and special featuresrequired prior to field start-up.B. Unit Cabinet:1. Frame shall be of heavy-gage galvanized steelmembers.2. Cabinet shall be galvanized steel casing with apre-painted finish.3. Cabinet shall be capable of withstanding500-hour salt spray test in accordance with theASTM B-117 standard.C. Fans:Condenser fans shall be direct-driven propellertype discharging air vertically upward and shall beequipped with the following features:1. Permanently lubricated bearings.2. Steel wire safety guards.3. Statically and dynamically balanced fan blades.D. Compressors:1. Reciprocating semi-hermetic type only.2. Each equipped with an automatically-reversibleoil pump, operating oil charge, suction anddischarge shutoff valves, and an insert-typefactory-sized crankcase heater to control oildilution.3. Each mounted on spring vibration isolatorswith an isolation efficiency of no less than95%.4. Speed shall not exceed 1750 rpm (29.2 r/s).5. Cycles per hour per compressor shall notexceed 6.E. Cooler:1. Shell-and-tube type with removable heads.2. Tubes shall be internally enhanced seamless-coppertype rolled into tube sheets.3. Equipped with flange type fluid connections.4. Shell shall be insulated with 3 /4 -in. (19-mm) PVCfoam (closed-cell) with a maximum K factor of0.28.5. Design shall incorporate 2 independent direct-expansion refrigerant circuits.6. Cooler shall be tested and stamped in accordancewith ASME Code for a refrigerant working sidepressure of 278 psig (1916 kPa).Cooler shall have a maximum fluid-side pressureof 300 psig (2068 kPa).F. Condenser:1. Coil shall be air-cooled with integral subcooler,constructed of aluminum fins mechanically bondedto seamless copper tubes which are then cleaned,dehydrated, and sealed.2. Air-cooled condenser coils shall be leak tested at150 psig (1034 kPa) and pressure tested at 450 psig(3103 kPa).G. Refrigeration Components:Refrigerant circuit components shall include hot gasmuffler, high side pressure switch, liquid line shutoffvalves, suction and discharge shutoff valves, filterdrier, moisture-indicating sight glass, stepper motoractuated electronic expansion valve (EXV) orthermostatic expansion valve (TXV), and completeoperating charge of refrigerant R-22 and compressoroil.H. Controls, Safeties, and Diagnostics:1. Controls:a. Unit controls shall include the followingminimum components:1) Microprocessor.2) Power and control circuit terminal blocks.3) ON/OFF control switch.4) Replaceable solid-state relay panel.5) Clear language, expandable, alpha numericdiagnostic display/set point panel.6) Thermistor installed to measure saturatedcondensing temperature, cooler saturationtemperature, compressor return gastemperature, and cooler entering andleaving fluid temperatures.b. Unit controls shall be capable of performingthe following functions:1) Automatic circuit lead/lag (accessoryrequired for 040-070 sizes).2) Pumpout at beginning and end of everycircuit cycle.3) Capacity control based on leaving chilled fluidtemperature and compensated by rate ofchange of return-fluid temperature.4) Limiting of the chilled fluid temperaturepulldown rate at start-up to 1° F (.56° C) perminute to prevent excessive demand spikes(charges) at start-up.5) Seven-day time schedule.6) Leaving chilled fluid temperature reset fromreturn fluid, outdoor-air temperature, spacetemperature, or 4 to 20 mA input.7) Demand limit control with 2-stage control (0to 100% each) or through 4 to 20 mA input (0to 100%).

/ 38

Related manuals for Carrier 30GTN