Carrier 48TC**16 Adjust Factory-Installed Options, Install Accessories, Pre-Start and Start-Up

Page 46

48TC**16

Economizer

2 Position Damper

Unit Without Economizer or

2 Position Damper

 

 

C10333

Fig. 87 - EconoMi$ert IV Wiring

Step 13 — Adjust Factory-Installed Options

Smoke Detectors —

Smoke detector(s) will be connected at the Central Terminal Board (CTB), at terminals marked “Smoke Shutdown”. Remove jumper JMP 3 when ready to energize unit.

EconoMi$er IV Occupancy Switch —

Refer to Fig. 87 for general EconoMi$er IV wiring. External occupancy control is managed through a connection on the Central Terminal Board.

If external occupancy control is desired, connect a time clock or remotely controlled switch (closed for Occupied, open for Unoccupied sequence) at terminals marked OCCUPANCY on CTB. Remove or cut jumper JMP 2 to complete the installation.

Step 14 — Install Accessories

Available accessories include:

Roof Curb (must be installed before unit)

Thru-base connection kit (must be installed before unit is set on curb)

Manual outside air damper

Barometric relief Power Exhaust

Differential dry-bulb sensor (EconoMi$er IV) Outdoor enthalpy sensor

Differential enthalpy sensor

Time Guard II compressor anti-cycle control Outdoor coil protector grille

Head pressure control Programmable setback thermostat Electrical/Mechanical thermostat and subbase Thermidistatt device

Humidistat Thermostat / Sensors CO2 sensor

DDC interface (PremierLink) Louvered hail guard

Phase monitor control

Refer to separate installation instructions for information on installing these accessories.

Pre-Start and Start-Up

Two-Position motorized outside air damper

EconoMi$er IV (with control and integrated barometric relief)

EconoMi$er2 (without control/for external signal and integrated barometric relief)

This completes the mechanical installation of the unit. Refer to the unit’s Service Manual for detailed Pre-Start and Start-up instructions.

46

Page 45 Page 47
Image 46
Page 45 Page 47
Contents Installation Instructions Electrical Shock Hazard Unit Operation and Safety HazardFIRE, Explosion Hazard Personal Injury and Environmental HazardUnit Dimensional Drawing 16 Size Unit Service Clearance Dimensional Drawing Plan for Unit LocationInspect Unit Plan for Sequence of Unit InstallationProvide Unit Support Roof Curb Details Property Damage Hazard Field Fabricate DuctworkRig and Place Unit Unit Damage HazardConvert to Horizontal and Connect Ductwork when required Positioning on CurbEconomizer Hood Removal and Setup Factory Option Install Outside Air HoodTwo Position Damper Hood Removal and Setup Factory Option Install Flue Hood Economizer Hood and Two-Position HoodNatural Gas Supply Line Pressure Ranges Install Gas PipingEquipment Damage Hazard 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 Units without Thru-Base Connections Field Control WiringFactory-Option Thru-Base Connections Electrical Connections ThermostatUnit without Thru-Base Connection Kit Typical Low-Voltage Control ConnectionsTo connect the Carrier humidistat HL38MG029 Humidi-MiZerRControl ConnectionsHumidi-MiZer Space RH Controller To connect the Thermidistat device 33CS2PPRH-01OAT RRS Srtn PremierLinkt Factory Option PremierLink ControllerPremierLink Wiring Schematic PremierLink Wiring Schematic with Humidi-MiZerR EconoMi$er2 Supply Air Temperature SAT SensorField Connections PremierLink Sensor UsageSpace Sensor Mode Thermostat ModeConfigure the unit for Thermostat Mode Space SensorsEconomizer Controls Indoor Air Quality CO2 sensorTo wire the sensor Unit Performance HazardPower Exhaust output Filter Status SwitchSupply Fan Status Switch Smoke Detector/Fire Shutdown FSDCCN Communication Bus Connecting CCN Bus Color Code RecommendationsRecommended Cables RTU Open Control System RTU Open Multi-Protocol Control BoardRTU Open System Control Wiring Diagram RTU Open System Control Wiring Diagram with Humidi-MiZerR RTU Open Controller Inputs and Outputs Type of I/O Connection PIN Name Numbers Dedicated InputsSpace Temperature SPT Sensors RTU Open T-55 Sensor ConnectionsSpace Relative Humidity Sensor Typical Wiring Relative Humidity Sensors Space or Duct MountedDuct Relative Humidity Sensor Typical Wiring Connecting Discrete InputsCommunication Wiring Protocols GeneralLocal Access RTU Open TroubleshootingDifferential Enthalpy Control Outdoor Air Enthalpy Control PNO 33CSENTHSWLEDs Return Air Enthalpy SensorController Smoke DetectorsSystem Sensor ModuleSupply Air See Completing Installation of Return Air SmokeSmoke Detector Locations Return Air with EconomizerCompleting Installation of Return Air Smoke Sensor Return Air Detector Shipping PositionUnit Wire/Fuse or Hacr Breaker Sizing Data BrkrEconoMi$er IV Occupancy Switch Adjust Factory-Installed OptionsInstall Accessories 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.
Top Page Image Contents