Carrier 48TJ016-028 specifications Installation, Start-Up Service Instructions

Page 1

48TJ016-028

Single-Package Rooftop Units Electric Cooling/Gas Heating

Installation, Start-Up and

Service Instructions

 

CONTENTS

 

 

 

Page

SAFETY

CONSIDERATIONS

l

INSTALLATION

2-31

Step 1 --

Provide Unit Support

2

•ROOF CURB

•ALTERNATE UNIT SUPPORT

precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

Step 2 -- Rig and Place Unit

2

•POSITIONING

•ROOF MOUNT

Step

3 --

Field

Fabricate

Ductwork

9

Step 4 -- Make Unit Duct Connections

9

Step

5 --

Install

Flue Hood and Wind Baffle

9

Step

6 --

Trap Condensate Drain

9

Step

7 --

Orifice

Change

........................

10

Step

8 --

Install

Gas Piping

11

Step

9 --

Make

Electrical

Connections

11

•FIELD POWER SUPPLY

•FIELD CONTROL WIRING

•OPTIONAL NON-FUSED DISCONNECT

•OPTIONAL CONVENIENCE OUTLET

Step

10 --

Make Outdoor-Air

Inlet Adjustments..

14

Step

11 --

Install

Outdoor-Air

Hood

14

Step

12-

Install

All Accessories

15

•MOTORMASTER® I CONTROL INSTALLATION

•MOTORMASTER V CONTROL INSTALLATION

Step 13- Adjust Factory-InstalledOptions ..... 17

•PREMIERLINK TM CONTROL

•ENTHALPY SWITCH/RECEIVER

•OUTDOOR ENTHALPY CONTROL

•DIFFERENTIALENTHALPY CONTROL

•ENTHALPY SENSORS AND CONTROL

•OPTIONAL ECONOMI$ERIV AND ECONOMI$ER2

•ECONOMI$ERIV STANDARD SENSORS

•ECONOMI$ERIV CONTROL MODES

Step 14 --Install Humidistat for

Optional

MoistureMi$er TM Package

29

START-UP

....................................

31-38

SERVICE

.....................................

39-47

TROUBLESHOOTING

48-52

INDEX

53

START-UP

CHECKLIST

CL-I

SAFETY CONSIDERATIONS

Installation and selwicing of air-conditioning equipment can be hazardous due to system pressure and electric_d compo- nents. Only trained and qualified service personnel should in- stall, repaiL or service ai>conditioning equipment.

Untrained personnel can perform basic maintenance func- tions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on ai>conditioning equipment, observe

Before perforlning service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

1.Improper inst_dlation, adjustment, alteration, service, or maintenance can cause property &image, personal injury, or loss of life. Refer to the User's Information Manual provided with this unit for more details.

2.Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

What to do if you smell gas:

I.DO NOT Uy to light any appliance.

2.DO NOT touch any electrical switch, or use any phone in your building.

3.IMMEDIATELY call your gas supplier from a neigh- bor's phone. Follow the gas supplier's instructions.

4.If you cannot reach your gas supplier, czfll the fire department.

Disconnect gas piping hom unit when pressure testing at pressure greater than 0.5 psig. Pressures greater than

0.5psig will cause gas valve damage resulting in haz_udous condition. If gas valve is subjected to pressure greater than

0.5psig, it must be replaced before use. When pressure testing field-supplied gas piping at pressures of 0.5 psig or less, a unit connected to such piping must be isolated by closing the manual gas valve(s).

its. If limits are exceeded, the units will automatically I lock the compressor out of operation. Manu_d reset will IMPORTANT: Units have high ambient operating lim- ] be required to restgu-tthe compressor.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53480009-01

Printed in U,S.A,

Form 48TJ-22SI

Pg 1

3-06

Replaces: 48TJ-21SI

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Contents Installation, Start-Up Service Instructions Rig and Place Unit --Do not diop unit Accessory Curb14-3/4 Package no HeightOUTLINEGPUN,T Spreaderbars Detail a DimensionsUnit Base Rail UnitSTD Unit Economizer DIM B DIM C Unit WeightDIM a DIM B DIM C Weight BTD Unit Unit WeightEvaporator FAN Physical DataFreeze Protection Thermostat F Unit 48TJ Furnace SectionOUTDOOR-AIR Inlet Screens Make Unit Duct Connections -- Unit Install Flue Hood and Wind BaffleTrap Condensate Drain -- See Fig InsideOrifice Quantity Orifice Change -- This unit is factory asLP Gas Conversion GAS VO Ltag ETBI Thermostat Assembly Field Control Thermostat WiringElectrical Data Securing Screws Make Outdoor-Air Inlet Adjust- mentsPanel PANMotormaster I Control Installation Install All Accessories-- Install allMotormaster V Control Package Usage Motormaster V Control InstallationItem Description 48TJ024,028Outputs AdjustFactory-Installed OptionsWnti ELDEcono Motor GrinyelOutdoor AIR Return Application Temperature Sensor Enthalpy33CSENTHSW Differential Enthalpy Control Wiring JIN Unit OutdoorOptional Economiseriv and ECONOMISER2 EconoMiSerlVComponent Locations-- End ViewEconoMi$erlV Wiring EconoMi$erlV Sensor Usage Supply Air Sensor Temperature Resistance ValuesEconomiseriv Standard Sensors ECONOMI$ERIV11t,4 AOlI so+Nocv EconoMi$erlV Controller 002 Sensor Maximum Range SettingSR117 To x l---ff+ TR 002 Sensor Standard Settings Llsv MOISTUREMI$ERLPS TranCrankcase Heater Size 028 and Units with Compressor RotationFan Performance --48TJD020 and 024 Low Heat Units Fan Performance --48TJD016 Low Heat UnitsAirflow Fan Performance --48TJF016 High Heat Units Fan Performance 48TJD028 Low Heat UnitsFan Performance --48TJF028 High Heat Units Fan Performance 48TJF020 and 024 High Heat UnitsAccessory/FlOP Static Pressure In. wg --48TJ020-028 Accessory/FlOP Static PressureFan Rpm at Motor Pulley Settings Air Quantity LimitsEvaporator-Fan Motor Efficiency Evaporator-Fan Motor DataOperating Sequence COOLING, Units with ECONOMISER2, Premier COOLING. Units with ECONOMISER2, PremierHEATING. Unit with ECONOMI$ER2, Premierlink OAT SPTTypical Gas Heating Section Coil Maintenance and Cleaning RecommenLubrication Evaporator Fan Performance AdjustmentCondenser and EVAPORATOR-FAN Motor Manufacturer LubricantMotor Section Evaporator Fan Service and ReplacementFixed Flange SINGLE-GROOVE With BeltCondenser-Fan Adjustment Belt Tension Adjustment --To adjust belt tensionDiagnostic IGC Control LEDs-- The IGC bomd Gas Valve AdjustmentProtective Devices Control Circuit, 24-7--This control circuit is proSee 48TJD016D o,,-PL1o-12 1Oll IOll 1011BKR W/AT AHAUnit Troubleshooting- Refer to Tables 27-29 Cause Remedy Cooling Service AnalysisWill Not Than NormallySubcooler Service Analysis Heating Service AnalysisProblem Cause MoistureMi$er TM DehumidificationEr LOC.rsOFF Valve Motor FaultInputs EconoMi$erlV Input/Output LogicDCV OutputsIndex Service Training Page Model no Serial no Date RETURN-AIR TemperatureSupply 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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