Carrier 50HCQA installation instructions Install Accessories, Pre-Start and Start-Up

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Step 12 — Install Accessories

Available accessories include:

Roof Curb

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

Manual outside air damper 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)

Power Exhaust

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

Differential enthalpy sensor

Time Guard II compressor anti-cycle control Outdoor coil hail guard

Outdoor coil protector grille Head pressure control Programmable setback thermostat Electrical/Mechanical thermostat and subbase Electric Heaters

Single Point kits 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

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

50HCQA

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Contents Installation Instructions Safety Considerations Unit Dimensional Drawing 04 06 Size Units Plan for Unit Location Unit Dimensional Drawing 04 06 Size UnitInspect unit Plan for Sequence of Unit InstallationProvide Unit Support Roof Curb Details Field Fabricate Ductwork For Units with Accessory Electric HeatersRig and Place Unit Rigging Details Positioning on Curb Convert to Horizontal and Connect Ductwork when requiredEconomizer Hood Removal and Setup Factory Option Install Outside Air HoodEconomizer Hood and Two-Position Hood Install External Condensate Trap and LineMake Electrical Connections Field Power SupplyConvenience Outlets Units with Factory-Installed DisconnectFactory-Option Thru-Base Connections Weatherproof Cover InstallationThermostat Field Control WiringHeat Anticipator Settings Units without Thru-Base ConnectionsHeater Model Number Field Control Wiring RacewaySingle Point Boxes and Supplementary Fuse Typical Module InstallationPremierLink Controller Supply Air Temperature SAT SensorTypical PremierLink Wiring Schematic EconoMi$ert2 Outdoor Air Temperature OAT SensorSpace Temperature SPT Sensors Field ConnectionsSpace Thermostat Connections PremierLink Sensor Usage Thermostat Mode Space Sensor ModeEconomizer Controls Indoor CO2 Sensor 33ZCSENCO2 Connections Space Relative Humidity Sensor Filter Status SwitchSupply Fan Status Switch Power Exhaust outputRecommended Cables Connecting CCN bus Color Code RecommendationsRTU-MP Control System Typical RTU-MP System Control Wiring Diagram Type of I/O Connection PIN Name Numbers Inputs RTU-MP Controller Inputs and OutputsSpace Temperature Sensor Typical Wiring 33ZCT59SPT RTU-MP / Outdoor CO2 Sensor 33ZCSENCO2 Connections Connecting Discrete InputsGeneral Communication Wiring ProtocolsRTU-MP Troubleshooting Local AccessController LEDsLEDs on the RTU-MP show the status of certain functions SystemSupply Air Smoke Detector LocationsCompleting Installation of Return Air Smoke Sensor See Completing Installation of Return Air SmokeAdditional Application Data STD Unit Wire/Fuse or Hacr Breaker Sizing DataUnit No P.E 208/230 208/230---3 STD EconoMi$er IV Occupancy Switch Adjust Factory-Installed OptionsSmoke Detectors Pre-Start and Start-Up Install AccessoriesCatalog No 50HCQ---01SI

50HCQA specifications

The Carrier 50HCQA is a cutting-edge rooftop air conditioning unit designed for commercial applications, combining efficiency, reliability, and advanced technology to ensure optimal indoor climate control. This model stands out in Carrier's extensive range of HVAC solutions, showcasing a blend of innovative features suitable for diverse building types.

One of the key features of the Carrier 50HCQA is its high-efficiency compressor. With variable-speed capabilities, the compressor adjusts its output to meet the precise cooling or heating demands of the space, promoting energy savings and consistent temperature management. This flexibility results in reduced energy consumption, making the 50HCQA an environmentally friendly choice for businesses looking to lower their carbon footprint.

The 50HCQA integrates advanced microprocessor controls, streamlining operation and enhancing user interaction. This technology allows for sophisticated diagnostics, monitoring, and scheduling, giving facility managers the tools they need to optimize system performance. The user-friendly interface ensures that settings can be easily adjusted, and real-time performance metrics can be accessed to ensure efficient operation.

In terms of construction, the Carrier 50HCQA is built with durability in mind. The unit features a robust cabinet design with a galvanized steel construction that is resistant to corrosion. This feature enhances the longevity of the unit, making it suitable for a variety of weather conditions. Additionally, the insulated casing reduces sound levels, providing a quieter operation that is particularly beneficial in noise-sensitive environments.

Another significant characteristic of the 50HCQA is its environmentally responsible refrigerant options. It utilizes R-410A refrigerant, which has a lower Global Warming Potential (GWP) compared to traditional refrigerants. This aspect not only meets regulatory standards but also supports users in making eco-friendly choices in their HVAC systems.

The 50HCQA also supports a range of optional accessories, including economizers for enhanced energy efficiency and improved air quality. This allows for increased outdoor air intake during suitable conditions, which can significantly contribute to enhancing indoor air quality—an essential factor for occupant comfort and health.

In conclusion, the Carrier 50HCQA is an exemplary model in the commercial HVAC sector, delivering powerful performance, advanced control technologies, and robust construction. Its energy-efficient design, user-friendly controls, and eco-conscious refrigerant options make it a top choice for businesses aiming to invest in sustainable and reliable climate control solutions.