Carrier 48TC**16 Convert to Horizontal and Connect Ductwork when required, Positioning on Curb

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48TC**16

Positioning on Curb —

For full perimeter curbs CRRFCURB074A00 and 075A00, the clearance between the roof curb and the front and rear base rails should be 1/4 in (6.4 mm). The clearance between the curb and the end base rails should be 1/2 in (13 mm). For retrofit applications with curbs CRRFCURB003A01 and 4A01, the unit should be position as shown in Fig. 6. Maintain the 15.5 in (394 mm) and 8 5/8 in (220 mm) clearances and allow the 22 5/16 in (567 mm) dimension to float if necessary.

C10003

Fig. 6 - Retrofit Installation Dimensions

If the alternative condensate drain location through the bottom of the unit is used in conjunction with a retrofit curb, the hole in the curb must be moved 12.5 in (320 mm) towards the duct end of the unit. (See Fig. 7.)

Original

New Position

Position

(moved 12.5 in.)

 

C10904

Fig. 7 - Alternative Condensate Drain Hole Positions

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

IMPORTANT:

If the unit has the factory-installed Thru-the-Base option, make sure to complete installation of the option before placing the unit on the roof curb.

See the following sections:

SFactory-Option Thru-Base Connections (Gas Connection) on page 11

SFactory-Option Thru-Base Connections (Electrical Connections) on page 17

NOTE: If gas and/or electrical connections are not going to occur at this time, tape or otherwise cover the fittings so that moisture does not get into the building or conduit in the interim.

Remove all shipping materials and top skid. Remove extra center post from the condenser end of the unit so that the condenser end of the unit matches Figs. 26 and 27. Recycle or dispose of all shipping materials.

Step 7 — Convert to Horizontal and Connect Ductwork (when required)

Unit is shipped in the vertical duct configuration. Unit without factory-installed economizer or return air smoke detector option may be field-converted to horizontal ducted configuration using accessory CRDUCTCV001A00. To convert to horizontal configuration, remove screws from side duct opening covers and remove covers.

Discard the supply duct cover. Install accessory CRDUCTCV001A00 to cover the vertical supply duct opening. Use the return duct cover removed from the end panel to cover the vertical return duct opening.

Field-supplied flanges should be attached to horizontal duct openings and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof or building openings with counter flashing and mastic in accordance with applicable codes.

Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork.

C06108

Fig. 8 - Horizontal Conversion Panels

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Contents Installation Instructions Unit Operation and Safety Hazard FIRE, Explosion HazardElectrical Shock Hazard Personal Injury and Environmental HazardUnit Dimensional Drawing 16 Size Unit Service Clearance Dimensional Drawing Plan for Unit LocationProvide Unit Support Plan for Sequence of Unit InstallationInspect Unit Roof Curb Details Field Fabricate Ductwork Rig and Place UnitProperty Damage Hazard Unit Damage HazardConvert to Horizontal and Connect Ductwork when required Positioning on CurbTwo Position Damper Hood Removal and Setup Factory Option Install Outside Air HoodEconomizer Hood Removal and Setup Factory Option Install Flue Hood Economizer Hood and Two-Position HoodEquipment Damage Hazard Install Gas PipingNatural Gas Supply Line Pressure Ranges Completing Installation of Thru-the-Base Option Install External Condensate Trap and Line Fire or Explosion HazardField Power Supply Make Electrical ConnectionsUnits Without Factory-Installed Disconnect Units with Factory-Installed DisconnectPower Wiring Connections Convenience Outlets Electrical Operation HazardUnit Powered Convenience Outlet Wiring Field Control Wiring Factory-Option Thru-Base Connections Electrical ConnectionsUnits without Thru-Base Connections ThermostatUnit without Thru-Base Connection Kit Typical Low-Voltage Control ConnectionsHumidi-MiZerRControl Connections Humidi-MiZer Space RH ControllerTo connect the Carrier humidistat HL38MG029 To connect the Thermidistat device 33CS2PPRH-01OAT RRS Srtn PremierLinkt Factory Option PremierLink ControllerPremierLink Wiring Schematic PremierLink Wiring Schematic with Humidi-MiZerR Supply Air Temperature SAT Sensor Field ConnectionsEconoMi$er2 PremierLink Sensor UsageSpace Sensor Mode Thermostat ModeConfigure the unit for Thermostat Mode Space SensorsEconomizer Controls Indoor Air Quality CO2 sensorTo wire the sensor Unit Performance HazardFilter Status Switch Supply Fan Status SwitchPower Exhaust output Smoke Detector/Fire Shutdown FSDRecommended Cables Connecting CCN Bus Color Code RecommendationsCCN Communication Bus RTU Open Control System RTU Open Multi-Protocol Control BoardRTU Open System Control Wiring Diagram RTU Open System Control Wiring Diagram with Humidi-MiZerR RTU Open Controller Inputs and Outputs Type of I/O Connection PIN Name Numbers Dedicated InputsSpace Temperature SPT Sensors RTU Open T-55 Sensor ConnectionsSpace Relative Humidity Sensor Typical Wiring Relative Humidity Sensors Space or Duct MountedDuct Relative Humidity Sensor Typical Wiring Connecting Discrete InputsCommunication Wiring Protocols GeneralLocal Access RTU Open TroubleshootingOutdoor Air Enthalpy Control PNO 33CSENTHSW LEDsDifferential Enthalpy Control Return Air Enthalpy SensorSmoke Detectors SystemController Sensor ModuleSee Completing Installation of Return Air Smoke Smoke Detector LocationsSupply Air Return Air with EconomizerCompleting Installation of Return Air Smoke Sensor Return Air Detector Shipping PositionUnit Wire/Fuse or Hacr Breaker Sizing Data BrkrAdjust Factory-Installed Options Install AccessoriesEconoMi$er IV Occupancy Switch Pre-Start and Start-Up48TC**16 14SI

48TC**16 specifications

The Carrier 48TC**16 is a high-efficiency rooftop packaged unit, designed for commercial heating and cooling applications. This model exemplifies Carrier's commitment to delivering reliable and innovative solutions to the HVAC industry. With cutting-edge technology and robust performance characteristics, the 48TC**16 is ideally suited for a variety of building types.

One of the main features of the Carrier 48TC**16 is its impressive energy efficiency. The unit achieves high SEER (Seasonal Energy Efficiency Ratio) ratings, which translates to lower energy bills and reduced environmental impact. The unit is equipped with a scroll compressor, known for its quiet operation and reliability, ensuring a comfortable indoor environment without disruptive noise.

The 48TC**16 utilizes advanced microprocessor controls that enhance system performance by enabling precise temperature control and various operational modes. This allows users to optimize the system's performance based on specific heating and cooling needs. Additionally, the unit includes enhanced diagnostics, allowing for faster troubleshooting and easier maintenance, thus minimizing downtime and repair costs.

Another notable characteristic of the 48TC**16 is its robust construction. Built to withstand harsh weather conditions, the unit features a galvanized steel cabinet coated with a corrosion-resistant finish, ensuring longevity and durability. It also comes equipped with a variety of factory-installed options, such as economizers and filtration systems, which can further enhance its performance and flexibility.

The Carrier 48TC**16 is designed with sustainability in mind, using environmentally friendly refrigerants. The unit supports the latest refrigerant regulations, helping to reduce the overall carbon footprint of the building it serves.

Installation and service are simplified by the unit's modular design, which allows for easy access to all major components. This design not only streamlines maintenance procedures but also facilitates quick installation, making it an ideal choice for contractors and facility managers alike.

In summary, the Carrier 48TC**16 rooftop packaged unit combines high energy efficiency, advanced controls, robust construction, and eco-friendly features, making it a top choice for commercial heating and cooling needs. Its user-friendly design and reliability ensure optimal performance and comfort for various applications, underscoring Carrier's reputation as a leader in the HVAC industry. Whether for new construction or retrofitting, the 48TC**16 meets the demands of modern buildings while adhering to sustainability practices.
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