Carrier 48TJ016-028 Install All Accessories-- Install all, Motormaster I Control Installation

Page 15

Step 12 --Install All Accessories-- Install all

field-installed accessories. Refer to the accessoly installation instructions included with each accessory.

MOTORMASTER® I CONTROL INSTALLATION

(48TJ016,020 UNITS)

Install Field-Fabricated Wind Baffles -- Wind baffles must be field-fabricated for all units to ensure proper cooling cycle operation at low ambient temperatures. See Fig. 21 for baffle

details. Use 20-gage, galvanized sheet metal, or similar

conosion-resistant metal for baffles. Use field-supplied screws to attach baffles to unit. Screws should be 1/4-in. diameter and

5/8-in. long. Drill required screw holes for mounting baffles.

To avoid dmnage to the refiigemnt coils and electric_d com-

ponents, use recommended screw sizes only. Use care when drilling holes.

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BAFFLE TOP VIEW 1" (25) MIN--_

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BAFFLE FRONT VIEW

NOTE: Dimensions in ( ) are in mm.

Fig. 21 --Wind Baffle Details

Install Motormaster [ Controls -- Only one Motormaster I

control is required per unit. The Motormaster I control must be used in conjunction with the Accessory 0 ° F Ix_w Ambient Kit (purchased separately). The Motormaster [ device controls out- door fan no. 1 while outdoor fans no. 2 and 3 are sequenced off by the Accessory 0 ° F Low Ambient Kit.

Accessoiw 0 ° F Din' Ambient Kit -- Inst_dl the Accessory 0° F Ix_w Ambient Kit per instruction supplied with accessory. Sensor Assembly -- Install the sensor assembly in the location shown in Fig. 25_

Motor Mount- To ensure proper fan height, replace the exist- ing motor mount with the new motor mount provided with accessory.

Tran._fiwmer (460 and 575-vUnits On@) -- On 460 and 575-v

units, a transhmner is required. The transformer is provided with the accessory and must be field-installed.

Motormaswr I Control -- Recommended mounting location is

on the inside of the panel to the left of the control box. The control should be mounted on the inside of the panel, verti- cally, with leads protruding from bottom of extrusion.

 

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HAIRPIN END

HAIRPIN END

48TJ016

48TJ020

NOTE: All sensors are located on the eighth hairpin up from the bottom.

Fig. 22 --Motormaster I Sensor Locations

15

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Contents Installation, Start-Up Service Instructions Package no Height Accessory CurbRig and Place Unit --Do not diop unit 14-3/4OUTLINEGPUN,T Unit DimensionsSpreaderbars Detail a Unit Base RailSTD Unit Economizer DIM B DIM C Unit WeightDIM a DIM B DIM C Weight BTD Unit Unit WeightEvaporator FAN Physical DataUnit 48TJ Furnace Section Freeze Protection Thermostat FOUTDOOR-AIR Inlet Screens Inside Install Flue Hood and Wind BaffleMake Unit Duct Connections -- Unit Trap Condensate Drain -- See FigOrifice Change -- This unit is factory as Orifice QuantityLP Gas Conversion VO Ltag E GASTBI Thermostat Assembly Field Control Thermostat WiringElectrical Data PAN Make Outdoor-Air Inlet Adjust- mentsSecuring Screws PanelMotormaster I Control Installation Install All Accessories-- Install all48TJ024,028 Motormaster V Control InstallationMotormaster V Control Package Usage Item DescriptionOutputs AdjustFactory-Installed OptionsGrinyel ELDWnti Econo MotorOutdoor AIR Return Application Temperature Sensor Enthalpy33CSENTHSW Differential Enthalpy Control Wiring JIN Unit OutdoorOptional Economiseriv and ECONOMISER2 EconoMiSerlVComponent Locations-- End ViewEconoMi$erlV Wiring ECONOMI$ERIV Supply Air Sensor Temperature Resistance ValuesEconoMi$erlV Sensor Usage Economiseriv Standard Sensors11t,4 EconoMi$erlV Controller 002 Sensor Maximum Range Setting AOlI so+NocvSR117 To x l---ff+ TR 002 Sensor Standard Settings Tran MOISTUREMI$ERLlsv LPSCrankcase Heater Size 028 and Units with Compressor RotationFan Performance --48TJD016 Low Heat Units Fan Performance --48TJD020 and 024 Low Heat UnitsAirflow Fan Performance --48TJF016 High Heat Units Fan Performance 48TJD028 Low Heat UnitsFan Performance --48TJF028 High Heat Units Fan Performance 48TJF020 and 024 High Heat UnitsAir Quantity Limits Accessory/FlOP Static PressureAccessory/FlOP Static Pressure In. wg --48TJ020-028 Fan Rpm at Motor Pulley SettingsEvaporator-Fan Motor Data Evaporator-Fan Motor EfficiencyOperating Sequence COOLING, Units with ECONOMISER2, Premier COOLING. Units with ECONOMISER2, PremierHEATING. Unit with ECONOMI$ER2, Premierlink OAT SPTTypical Gas Heating Section Coil Maintenance and Cleaning RecommenManufacturer Lubricant Evaporator Fan Performance AdjustmentLubrication Condenser and EVAPORATOR-FAN MotorWith Belt Evaporator Fan Service and ReplacementMotor Section Fixed Flange SINGLE-GROOVECondenser-Fan Adjustment Belt Tension Adjustment --To adjust belt tensionControl Circuit, 24-7--This control circuit is pro Gas Valve AdjustmentDiagnostic IGC Control LEDs-- The IGC bomd Protective DevicesSee 48TJD016D o,,-PL1o-12 1Oll IOll 1011BKR W/AT AHAUnit Troubleshooting- Refer to Tables 27-29 Than Normally Cooling Service AnalysisCause Remedy Will NotMoistureMi$er TM Dehumidification Heating Service AnalysisSubcooler Service Analysis Problem CauseEr LOC.rsOFF Valve Motor FaultOutputs EconoMi$erlV Input/Output LogicInputs DCVIndex Service Training Page Compressor Amps Supply FAN Amps Exhaust FAN Amps RETURN-AIR TemperatureModel no Serial no Date Supply Voltage

48TJ016-028 specifications

The Carrier 48TJ016-028 is a notable model in the range of packaged rooftop units designed by Carrier, a leader in heating, ventilation, and air conditioning (HVAC) solutions. Tailored specifically for commercial applications, these units provide a blend of efficiency, durability, and reliability, making them suitable for a variety of settings, including offices, retail spaces, and industrial environments.

One of the standout features of the 48TJ series is its energy-efficient performance. Equipped with high-efficiency scroll compressors, these units offer superior cooling capacity while minimizing energy consumption. This aligns with modern sustainability goals, helping businesses reduce their carbon footprint and operational costs. Additionally, the 48TJ units comply with stringent industry standards, such as the ASHRAE 90.1 energy efficiency guidelines, ensuring that users receive a product that meets modern energy performance benchmarks.

The 48TJ016-028 units also include advanced technologies that enhance performance and user comfort. The inclusion of a sophisticated microprocessor control system facilitates precise temperature regulation, allowing for an optimal balance of cooling and heating based on real-time conditions. Moreover, the user-friendly controls make it easy for facility managers to monitor system performance and make adjustments as necessary.

Another notable characteristic of the 48TJ series is its flexible installation options. These rooftop units are designed for easy integration into existing building structures and can be installed on flat or pitched roofs. Their compact design and lightweight construction simplify the installation process while minimizing structural impacts on buildings.

Durability is paramount in the design of the 48TJ units as well. The cabinets are constructed from high-quality materials with corrosion-resistant coatings, ensuring a long lifespan even in harsh environmental conditions. The systems are also equipped with robust insulation to reduce sound levels and improve overall operating efficiency.

Furthermore, the Carrier 48TJ016-028 units offer various options for customization. Users can choose from different airflow configurations, heating options, and accessories, allowing for tailored solutions that meet specific requirements. Whether you are looking for a unit with enhanced filtration, economizer capabilities, or advanced humidity control, the 48TJ series provides the flexibility needed for diverse applications.

In summary, the Carrier 48TJ016-028 units deliver a compelling combination of energy efficiency, advanced technology, and robust construction, making them an ideal choice for commercial HVAC needs. With their versatile features and customizable options, they stand out as reliable solutions for maintaining comfortable indoor environments.
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