Carrier 48TC**16 FIRE, Explosion Hazard, Electrical Shock Hazard, CUT Hazard

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48TC**16

Outdoor Air Quality Sensor . . . . . . . . . . . . . . . . . 37 Space Relative Humidity Senor or Humidistat . . 37 Smoke Detector/Fire Shutdown (FSD) . . . . . . . . . 38 Connecting Discrete Inputs . . . . . . . . . . . . . . . . . . 38 Communication Wiring - Protocols . . . . . . . . . . . . 39 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Local Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 RTU Open Troubleshooting . . . . . . . . . . . . . . . . . 40 Outdoor Air Enthalpy Control . . . . . . . . . . . . . . . . . 41 Differential Enthalpy Control . . . . . . . . . . . . . . . . 41 Return Air Enthalpy Sensor . . . . . . . . . . . . . . . . . 41 Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Sensor Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Smoke Detector Locations . . . . . . . . . . . . . . . . . . . . 43 Supply Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Return Air without Economizer . . . . . . . . . . . . . . 43 Return Air with Economizer . . . . . . . . . . . . . . . . . 43 Step 13 - Adjust Factory-Installed Options . . . . . . . . 46 Step 14 - Install Accessories . . . . . . . . . . . . . . . . . . . 46

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and appropriate national electrical codes (in USA, ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA C22.1) for special requirements.

It is important to recognize safety information. This is the

safety-alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices, which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

!WARNING

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal injury or death.

Disconnect gas piping from unit when leak testing at pressure greater than 0.5 psig (3450 Pa). Pressures greater than 0.5 psig (3450 Pa) will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure greater than 0.5 psig (3450 Pa), it must be replaced before use. When pressure testing field-supplied gas piping at pressures of 0.5 psig (3450 Pa) or less, a unit connected to such piping must be isolated by closing the manual gas valve.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lock(s) and lockout tag(s). Unit may have more than one power switch.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

Puronr (R-410A) refrigerant systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on Puron refrigerant equipment.

!WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

Failure to follow this warning could cause personal injury or death.

Relieve pressure and recover all refrigerant before system repair or final unit disposal.

Wear safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.

!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing air conditioning equipment.

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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 LocationProvide Unit Support Plan for Sequence of Unit InstallationInspect Unit Roof Curb Details Property Damage Hazard Field Fabricate DuctworkRig and Place Unit 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 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$er2 Supply Air Temperature SAT SensorField Connections PremierLink Sensor UsageSpace Sensor Mode Thermostat ModeConfigure the unit for Thermostat Mode Space SensorsEconomizer Controls Indoor Air Quality CO2 sensorTo wire the sensor Unit Performance HazardPower Exhaust output Filter Status SwitchSupply Fan Status Switch Smoke Detector/Fire Shutdown FSDRecommended Cables Connecting CCN Bus Color Code RecommendationsCCN Communication Bus RTU Open Control System RTU Open Multi-Protocol Control BoardRTU Open System Control Wiring Diagram RTU Open System Control Wiring Diagram with Humidi-MiZerR RTU Open Controller Inputs and Outputs Type of I/O Connection PIN Name Numbers Dedicated InputsSpace Temperature SPT Sensors RTU Open T-55 Sensor ConnectionsSpace Relative Humidity Sensor Typical Wiring Relative Humidity Sensors Space or Duct MountedDuct Relative Humidity Sensor Typical Wiring Connecting Discrete InputsCommunication Wiring Protocols GeneralLocal Access RTU Open TroubleshootingDifferential Enthalpy Control Outdoor Air Enthalpy Control PNO 33CSENTHSWLEDs Return Air Enthalpy SensorController Smoke DetectorsSystem Sensor ModuleSupply Air See Completing Installation of Return Air SmokeSmoke Detector Locations Return Air with EconomizerCompleting Installation of Return Air Smoke Sensor Return Air Detector Shipping PositionUnit Wire/Fuse or Hacr Breaker Sizing Data BrkrEconoMi$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.
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