Carrier 48TJE008-014, 48TJD008-014, 48TJF008-012 installation instructions Position Setting

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Fig. 17 Ð Position Setting

9.Remove and save screws currently on sides of hood. Insert screens. Secure screens to hood using the screws. See Fig. 16.

10.Replace ®lter access panel. Ensure ®lter access panel slides along the tracks and is securely engaged.

OPTIONAL DURABLADE ECONOMIZER Ð The op- tional economizer hood assembly is packaged and shipped in the ®lter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical discharge position.

NOTE: Horizontal discharge block-off plate is shipped with the air hood package. If unit is to be used for vertical dis- charge application, discard this plate.

Assembly

1.Determine if ventilation air is required in building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 8.

2.Remove ®lter access panel by raising panel and swing- ing panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove ®lter access panel. Remove outdoor-air opening panel. Save panels and screws. See Fig. 18. Remove optional economizer and outdoor-air damper hood package from ®lter section.

3.Assemble outdoor-air hood top and side plates as shown in Fig. 19. Install seal strips on hood top and sides. Put aside screen retainer and retainer screw for later assem- bly. Do not attach hood to unit at this time.

4.On 012 and 014 units, install vertical discharge block- off plate over duct openings. See Fig. 20.

5.Slide economizer into unit and secure with screws. See Fig. 21.

NOTE: Be sure to engage rear economizer ¯ange under tabs in vertical return-air opening.

6.To convert to horizontal discharge application:

a.Rotate the economizer 90 degrees until the econo- mizer motor faces the condenser section (see Fig. 22).

b. Rotate the barometric relief damper hinge 90 degrees. Barometric relief damper should open ver- tically to operate properly.

c.Install horizontal discharge block-off plate over the opening on the access panel. (Block-off plate MUST be installed before installing hood assembly.) See Fig. 23.

7.Insert economizer plug into economizer harness. Re- move tape from barometric relief damper. See Fig. 21.

8.If ventilation air is not required, proceed to Step 9. If ventilation air is required, determine the minimum po- sition setting for required air¯ow. See Fig. 24. Adjust minimum position setting by adjusting the screws on the position setting bracket. See Fig. 25. Slide bracket until the top screw is in the position determined by Fig. 24. Tighten screws.

9.Remove tape from outdoor-air thermostat (OAT). Fas- ten OAT to inside of hood using screws and speed clips provided. See Fig. 26. Make sure OAT terminals are po- sitioned up.

10.Replace outdoor-air opening panel using screws from Step 2. Replace ®lter access panel. Ensure the ®lter ac- cess panel slides along the tracks and is securely engaged.

11.Fasten hood top and side plate assembly to outdoor-air opening panel with screws provided.

12.Place knob supplied with economizer on OAT. See Fig. 26. Set for 3° F below indoor room thermostat set- ting. If accessory enthalpy control (EC) is used in place of OAT, see instructions shipped with EC for installa- tion and adjustment. See Fig. 26.

13.Connect OAT per Fig. 27.

14.Slide outdoor-air inlet screens into screen track on hood side plate. While holding screens in place, fasten screen retainer to hood using screws provided.

NOTE: Refer to Fig. 28 for Durablade economizer baromet- ric relief damper characteristics.

OUTDOOR-AIR

FILTER ACCESS

OPENING PANEL

PANEL

Fig. 18 Ð Access Panel Locations

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Contents Installation, Start-Up Service Instructions Install External Trap for Condensate Horizontal Conversion PanelsPower Control Connector ``D ALT Drain Hole AccessoryUnit Size GAS Connection PackageUnit Leveling Tolerances Physical Data Furnace Section Freeze Protection Thermostat F²OUTDOOR-AIR Inlet Screens RETURN-AIR FiltersBase Unit Dimensions Make Electrical Connections Flue Hood DetailsElectrical Data Comps IFCAdjust Factory-Installed Options Typical UnitPosition Setting Durablade Economizer Installed in Unit Durablade Economizer Damper Minimum Position Setting Parablade Economizer Installed in Unit Enthalpy Settings for Parablade Economizer Unit Motor Pulley Turns Open Evaporator-Fan Motor Efficiency Economizer Static Pressure Drop in. wgMotor Data Fan Performance, 48TJ008 Ð Vertical Discharge Units Fan Performance, 48TJ009 Ð Vertical Discharge UnitsAirflow Fan Performance, 48TJ012 Ð Vertical Discharge Units Fan Performance, 48TJ014 Ð Vertical Discharge UnitsFan Performance, 48TJ008 Ð Horizontal Discharge Units Fan Performance, 48TJ009 Ð Horizontal Discharge UnitsFan Performance, 48TJ012 Ð Horizontal Discharge Units Fan Performance, 48TJ014 Ð Horizontal Discharge UnitsSTART-UP HeatingAltitude Compensation Nominal InputElevation Cleaning Condenser Coil LubricationCondenser-Fan Adjustment Fig 48TJ Unit VoltageFAN Height ``A Cooling Charging Chart 48TJ009 LED Error Code Description LED Indication Error Code DescriptionOFF Flash²Burner Section Details Spark Gap Adjustment LED Error Code Service Analysis Problem Cause RemedyLED OFF Durablade Economizer Troubleshooting Problem Cause RemedyParablade Economizer Service Troubleshooting Cooling Service Troubleshooting Heating Service Troubleshooting Typical Wiring Schematic and Component Arrangement Page Copyright 1996 Carrier Corporation Page Remove and Store in Job File Preliminary Information

48TJF008-012, 48TJD008-014, 48TJE008-014 specifications

Carrier's 48TJD008-014, 48TJE008-014, and 48TJF008-012 series are high-performance packaged rooftop units engineered to meet the heating, ventilation, and air conditioning (HVAC) needs of commercial and industrial applications. These units are renowned for their reliability, energy efficiency, and advanced technologies, making them a popular choice among facility managers and HVAC professionals.

One of the standout features of these Carrier units is their robust construction. Designed to withstand diverse environmental conditions, these units come with durable cabinets that are resistant to corrosion and UV degradation. This durability extends the product lifespan and reduces maintenance needs, providing long-term savings for facility operators.

The series includes models ranging from 8 to 14 tons, catering to a variety of space requirements. Each unit is equipped with a high-efficiency scroll compressor that enhances performance while minimizing energy consumption. This compressor technology guarantees quieter operation, reduced vibrations, and exceptional reliability, which are critical factors in commercial settings.

Energy efficiency is a hallmark of the 48TJD, 48TJE, and 48TJF series. These units come with high Seasonal Energy Efficiency Ratios (SEER) and Energy Efficiency Ratios (EER), which result in lower energy bills and a reduced carbon footprint. The incorporation of advanced digital controls allows for precise temperature management and integration with building management systems, ensuring optimal performance throughout the year.

In terms of comfort features, the Carrier series utilizes variable-speed technology, enabling the fan to adjust its speed according to the load requirements. This results in more consistent temperature control and enhanced indoor air quality. The units also include options for enhanced filtration systems, which can accommodate various filter types, ensuring the removal of airborne particles and allergens.

Installation is simplified with these packaged rooftop units. Their compact design fits well on rooftops or in limited spaces, and they come with factory-installed components, which streamline the setup process. Additionally, the units feature easy access panels for maintenance, allowing technicians to conduct service with minimal disruption to operations.

Finally, Carrier's dedication to innovation is evident in the incorporation of smart technologies within these units. Integrated diagnostics and monitoring systems provide real-time performance data, enabling proactive maintenance and reducing the likelihood of unexpected breakdowns.

In summary, Carrier's 48TJD008-014, 48TJE008-014, and 48TJF008-012 rooftop units are engineered for efficiency, reliability, and comfort. With their durable construction, advanced compressor technology, energy efficiency, comfort features, and ease of installation, these units are ideal for meeting the demanding HVAC needs of commercial spaces.
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