Carrier 48HC installation instructions Local Access, RTU Open Troubleshooting

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Local Access —

BACview6 Handheld: The BACview6 is a keypad/display interface used to connect to the RTU Open to access the control information, read sensor values, and test the RTU, see Fig. 70. This is an accessory interface that does not come with the RTU Open controller and can only be used at the unit. Connect the BACview6 to the RTU Open J12 local access port. There are 2 password protected levels in the display (User and Admin). The user password is defaulted to 0000 but can be changed. The Admin password is 1111 and cannot be changed. There is a 10 minute auto logout if a screen is idle. See Form 48-50HCTQ-01T, Appendix A for navigation and screen content.

48HC

Virtual BACview: Virtual BACview is a freeware computer program that functions as the BACview6 Handheld. The USB Link interface (USB-L) is required to connect a computer to the RTU Open board. The link cable connects a USB port to the J12 local access port. This program functions and operates identical to the handheld.

RTU Open Troubleshooting —

Communication LEDs: The LEDs indicate if the controller is speaking to the devices on the network. The LEDs should reflect communication traffic based on the baud rate set. The higher the baud rate the more solid the LEDs will appear. See Table 10.

Access Port

P1 P1

J12

Protocol Selector

RTU Open

Cable

P5 P5

BACview6 Local Access Cable

C10812

Fig. 70 - BACview6 Handheld Connections

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Contents Installation Instructions Safety Considerations Unit Dimensional Drawing 17 Size Unit C10897 Unit Dimensional Drawing 20 and 24 Size Units C10893 Unit Dimensional Drawing 28 Size Unit C10901 Roof Mount Operating WeightsPlan for Unit Location Provide Unit Support Plan for Sequence of Unit InstallationInspect unit Roof Curb Details 17 Size Unit Roof Curb Details 20 and 24 Size Units Roof Curb Details 28 Size Unit Field Fabricate Ductwork Rig and Place UnitPositioning on Curb Install Outside Air Hood Factory OptionHorizontal Duct Connection Install Flue Hood and Combustion Air Hood Install Gas PipingTo assemble the outside air hood Gas Supply LineTypical 3/4-in NPT Field Supplied Piping Parts Natural Gas Supply Line Pressure RangesFactory-Option Thru-Base Connections Orifice HoleMake Electrical Connections Install External Condensate Trap and LineField Power Supply Units with Factory-Installed Disconnect All UnitsPowered Convenience Outlet Wiring Field Control Wiring Units without Thru-Base ConnectionsThermostat Unit without Thru-Base Connection KitTransformer Connection for 208-v Power Supply 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$er2 PremierLink Sensor UsageSpace Sensor Mode Thermostat ModeConfigure the Unit for Thermostat Mode Space SensorsEconomizer Controls Indoor Air Quality CO2 SensorSpace Relative Humidity Sensor Installation To wire the sensorFilter Status Switch Supply Fan Status SwitchPower Exhaust output Smoke Detector/Fire Shutdown FSDRecommended Cables Connecting CCN Bus Color Code RecommendationsCCN Communication Bus RTU Open Control System RTU Open Multi-Protocol Control BoardRTU Open System Control Wiring Diagram RTU Open System Control Wiring Diagram with Humidi-MiZerR RTU Open Controller Inputs and Outputs Type of I/O Connection PIN Name Numbers Dedicated InputsSpace Temperature SPT Sensors RTU Open T-55 Sensor ConnectionsSpace Relative Humidity Sensor Typical Wiring Relative Humidity Sensors Space or Duct MountedDuct Relative Humidity Sensor Typical Wiring Connecting Discrete InputsCommunication Wiring Protocols GeneralLocal Access RTU Open TroubleshootingDifferential Enthalpy Control Outdoor Air Enthalpy ControlLEDs Smoke Detectors WiringReturn Air Sensor Tube Installation To install the return air sensor sampling tube Unit Wire/Fuse or Hacr Breaker Sizing DataSmoke Detector Test Magnet Additional Application DataUnit NOM IFM FAN Motor Exhaust Unbalanced 3-Phase Supply Voltage Adjust Factory-Installed Options Install AccessoriesEconoMi$er IV Occupancy Switch Pre-Start and Start-Up48HC Catalog No 48HC---11SI

48HC specifications

The Carrier 48HC is a highly efficient rooftop HVAC unit designed for commercial applications that prioritize both performance and energy savings. This unit embodies Carrier's commitment to innovation by integrating advanced technologies and features that address the modern demands of building climate control.

One of the standout features of the Carrier 48HC is its exceptional energy efficiency. Employing the latest in variable-speed compressor technology, the unit adjusts its output based on the specific cooling needs of the space, which not only enhances comfort levels but also significantly reduces energy consumption. This feature is crucial for businesses looking to lower their operational costs while minimizing their environmental impact.

The Carrier 48HC is also equipped with a comprehensive range of control options. Through its intelligent control systems, users can utilize features such as demand ventilation, which optimizes indoor air quality while maintaining energy efficiency. The integration with building management systems (BMS) further enhances operational effectiveness, allowing real-time monitoring and adjustments from a centralized point.

Additionally, the 48HC is designed with durability in mind. Its robust construction resists harsh weather conditions and ensures long-lasting performance. The unit features advanced corrosion-resistant materials and coatings, which prolong its lifespan and reduce maintenance needs. This durability makes the 48HC a reliable choice for varying environments, whether it’s an industrial setting or a more delicate commercial space.

The unit’s compact design also deserves mention, as it facilitates easier installation on rooftops without taking up excessive space. The modular design allows for customization, enabling businesses to tailor their systems to fit specific heating and cooling requirements.

In terms of comfort, the Carrier 48HC employs efficient air distribution technology that ensures even airflow throughout the space. This greatly enhances occupant comfort by eliminating hot or cold spots, promoting a consistent indoor climate.

Finally, the 48HC complies with stringent environmental regulations and standards. With options for environmentally-friendly refrigerants, it supports businesses in their sustainability efforts while operating effectively under current regulations.

In summary, the Carrier 48HC stands out in the crowded HVAC market due to its advanced technology, energy efficiency, durability, and adaptability for commercial applications, making it a top choice for those looking to invest in a reliable and effective climate control solution.
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