Carrier 48TJ016-028 specifications Unit 48TJ Furnace Section, Freeze Protection Thermostat F

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Table 1 --Physical Data (cont)

UNIT 48TJ

FURNACE SECTION

Rollout Switch Cutout Temp (F)t Burner Orifice Diameter (in....drill size)

Natural

Gas

 

 

Thermostat Heat Anticipator Setting (amps)

208/230,

575

Stage

1

460 v

 

Stage

2

 

Stage

1

 

 

Stage

2

Gas Input

 

Stage

1

 

 

Stage

2

Efficiency (Steady State) (%)

Temperature Rise Range

Manifold Pressure (in. wg)

Natural Gas

Gas Valve Quantity

Field Gas Connection Size (in.-FPT)

HIGH-PRESSURE SWITCH (psig)

Cutout

Reset (Auto)

LOW-PRESSURE SWITCH (psig)

Cutout

Reset (Auto)

FREEZE PROTECTION THERMOSTAT (F)

Opens

Closes

OUTDOOR-AIR INLET SCREENS

Quantity...Size (in.)

016D/F

O20D/F

 

024D/F

028D/F

190

190

 

190

190

0.1285-.30/0.136-.29

0.1285.-30/0.136-.29

0.1285.-30/0.136-.29

0.1285_.30/0.136...29

0.98

0.98

 

0.98

0.98

0.44

0.44

 

0.44

0.44

0.80

0.80

 

0.80

0.80

0.44

0.44

 

0.44

0.44

172,000/225,000

206,000/270,000

 

206,000/270,000

206,000/270,000

230,000/300,000

275,000/360,000

 

275,000/360,000

275,000/360,000

81

81

 

81

81

15-45/20-50

15-45/20-50

 

15-45/20-50

15-45/20-50

3.3

3.3

 

3.3

3.3

1

1

 

1

1

3/4

3/4

 

3/4

3/4

 

 

426

 

 

 

 

32O

 

 

 

 

27

 

 

 

 

44

 

 

 

3O-+5

 

 

 

45-+5

 

 

 

Cleanable

 

 

 

2...20

x 25

x 1

 

 

1...20

x 20

x 1

 

RETURN-AIR FILTERS

Throwaway**

Quantity.,.Size (in.)

4_.20

x 20

x 2

 

4...16

x 20

x 2

POWER EXHAUST

V2 Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)

LEGEND

Bhp -- Brake Horsepower

TXV -- Thermostatic Expansion Valve

*Circuit 1 uses the lower portion of condenser coil and lower portion of evap- orator coils; and Circuit 2 uses the upper portion of both coils.

tRollout switch is manual reset.

**The 48TJ028 units requires 2-in. industrial-grade filters capable of handling face velocities of up to 625 ft/min (such as American Air Filter no. 5700 or equivalent).

NOTE: The 48TJ016-028 units have a low-pressure switch (standard) located on the suction side.

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Contents Installation, Start-Up Service Instructions Accessory Curb Rig and Place Unit --Do not diop unit14-3/4 Package no HeightOUTLINEGPUN,T Dimensions Spreaderbars Detail aUnit Base Rail UnitDIM B DIM C Unit Weight STD Unit EconomizerBTD Unit Unit Weight DIM a DIM B DIM C WeightPhysical Data Evaporator FANOUTDOOR-AIR Inlet Screens Unit 48TJ Furnace SectionFreeze Protection Thermostat F Install Flue Hood and Wind Baffle Make Unit Duct Connections -- UnitTrap Condensate Drain -- See Fig InsideLP Gas Conversion Orifice Change -- This unit is factory asOrifice Quantity TBI VO Ltag EGAS Field Control Thermostat Wiring Thermostat AssemblyElectrical Data Make Outdoor-Air Inlet Adjust- ments Securing ScrewsPanel PANInstall All Accessories-- Install all Motormaster I Control InstallationMotormaster V Control Installation Motormaster V Control Package UsageItem Description 48TJ024,028AdjustFactory-Installed Options OutputsELD WntiEcono Motor GrinyelApplication Temperature Sensor Enthalpy Outdoor AIR Return33CSENTHSW Differential Enthalpy Control Wiring Outdoor JIN UnitEconoMiSerlVComponent Locations-- End View Optional Economiseriv and ECONOMISER2EconoMi$erlV Wiring Supply Air Sensor Temperature Resistance Values EconoMi$erlV Sensor UsageEconomiseriv Standard Sensors ECONOMI$ERIV11t,4 SR117 EconoMi$erlV Controller 002 Sensor Maximum Range SettingAOlI so+Nocv To x l---ff+ TR 002 Sensor Standard Settings MOISTUREMI$ER LlsvLPS TranCompressor Rotation Crankcase Heater Size 028 and Units withAirflow Fan Performance --48TJD016 Low Heat UnitsFan Performance --48TJD020 and 024 Low Heat Units Fan Performance 48TJD028 Low Heat Units Fan Performance --48TJF016 High Heat UnitsFan Performance 48TJF020 and 024 High Heat Units Fan Performance --48TJF028 High Heat UnitsAccessory/FlOP Static Pressure Accessory/FlOP Static Pressure In. wg --48TJ020-028Fan Rpm at Motor Pulley Settings Air Quantity LimitsOperating Sequence Evaporator-Fan Motor DataEvaporator-Fan Motor Efficiency COOLING. Units with ECONOMISER2, Premier COOLING, Units with ECONOMISER2, PremierOAT SPT HEATING. Unit with ECONOMI$ER2, PremierlinkCoil Maintenance and Cleaning Recommen Typical Gas Heating SectionEvaporator Fan Performance Adjustment LubricationCondenser and EVAPORATOR-FAN Motor Manufacturer LubricantEvaporator Fan Service and Replacement Motor SectionFixed Flange SINGLE-GROOVE With BeltBelt Tension Adjustment --To adjust belt tension Condenser-Fan AdjustmentGas Valve Adjustment Diagnostic IGC Control LEDs-- The IGC bomdProtective Devices Control Circuit, 24-7--This control circuit is pro48TJD016 SeeD o,,-PL1o-12 1011 1Oll IOllAHA BKR W/ATUnit Troubleshooting- Refer to Tables 27-29 Cooling Service Analysis Cause RemedyWill Not Than NormallyHeating Service Analysis Subcooler Service AnalysisProblem Cause MoistureMi$er TM DehumidificationMotor Fault Er LOC.rsOFF ValveEconoMi$erlV Input/Output Logic InputsDCV OutputsIndex Service Training Page RETURN-AIR Temperature Model no Serial no DateSupply Voltage Compressor Amps Supply FAN Amps Exhaust FAN Amps

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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