Carrier 50HCQA Adjust Factory-Installed Options, Smoke Detectors, EconoMi$er IV Occupancy Switch

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--- Circuit breaker
--- Convenient outlet
--- Direct drive indoor fan motor
--- Disconnect
--- Full load amps
--- Indoor fan motor
--- Locked rotor amps
--- Minimum circuit amps
--- Power exhaust
--- Powered convenient outlet
--- Unpowered convenient outlet

50HCQA

Legend and Notes for Table 10

LEGEND:

BRKR

CO

DD

DISC

FLA

IFM

LRA

MCA

PE

PWRD CO

UNPWR CO

NOTES:

1.In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.

2.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to de- termine the percentage of voltage imbalance.

max voltage deviation from average voltage

% Voltage Imbalance = 100 x

average voltage

Example: Supply voltage is 230-3-60

AB = 224 v

BC = 231 v

AC = 226 v

Average Voltage =

(224 + 231 + 226)

=

681

 

 

3

3

 

 

=227

Determine maximum deviation from average voltage. (AB) 227 – 224 = 3 v

(BC) 231 – 227 = 4 v (AC) 227 – 226 = 1 v Maximum deviation is 4 v.

Determine percent of voltage imbalance.

% Voltage Imbalance

= 100 x

4

 

227

 

 

 

= 1.76%

 

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

Economizer

2 Position Damper

Unit Without Economizer or

2 Position Damper

 

 

 

 

C08631

Fig. 65 - EconoMi$ert IV Wiring

Step 11 — 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. 65 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.

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Contents Installation Instructions Safety Considerations Unit Dimensional Drawing 04 06 Size Units Unit Dimensional Drawing 04 06 Size Unit Plan for Unit LocationPlan for Sequence of Unit Installation Inspect unitProvide Unit Support Roof Curb Details For Units with Accessory Electric Heaters Field Fabricate DuctworkRig and Place Unit Convert to Horizontal and Connect Ductwork when required Rigging Details Positioning on CurbInstall Outside Air Hood Economizer Hood Removal and Setup Factory OptionInstall External Condensate Trap and Line Economizer Hood and Two-Position HoodField Power Supply Make Electrical ConnectionsUnits with Factory-Installed Disconnect Convenience OutletsWeatherproof Cover Installation Factory-Option Thru-Base ConnectionsUnits without Thru-Base Connections Field Control WiringHeat Anticipator Settings ThermostatField Control Wiring Raceway Heater Model NumberTypical Module Installation Single Point Boxes and Supplementary FuseSupply Air Temperature SAT Sensor PremierLink ControllerTypical PremierLink Wiring Schematic Field Connections Outdoor Air Temperature OAT SensorSpace Temperature SPT Sensors EconoMi$ert2Space Thermostat Connections PremierLink Sensor Usage Space Sensor Mode Thermostat ModeEconomizer Controls Indoor CO2 Sensor 33ZCSENCO2 Connections Power Exhaust output Filter Status SwitchSupply Fan Status Switch Space Relative Humidity SensorConnecting CCN bus Color Code Recommendations Recommended CablesRTU-MP Control System Typical RTU-MP System Control Wiring Diagram RTU-MP Controller Inputs and Outputs Type of I/O Connection PIN Name Numbers InputsSpace Temperature Sensor Typical Wiring 33ZCT59SPT Connecting Discrete Inputs RTU-MP / Outdoor CO2 Sensor 33ZCSENCO2 ConnectionsCommunication Wiring Protocols GeneralLocal Access RTU-MP TroubleshootingSystem LEDsLEDs on the RTU-MP show the status of certain functions ControllerSmoke Detector Locations Supply AirSee Completing Installation of Return Air Smoke Completing Installation of Return Air Smoke SensorAdditional Application Data Unit Wire/Fuse or Hacr Breaker Sizing Data STDUnit No P.E 208/230 208/230---3 STD Adjust Factory-Installed Options EconoMi$er IV Occupancy SwitchSmoke Detectors Install Accessories Pre-Start and Start-UpCatalog 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.
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