Carrier 50HCQA installation instructions Installation Instructions

Page 1

50HCQA

Single Package Rooftop

Heat Pump

with Puronr (R---410A) Refrigerant Sizes 04 --- 06

Installation Instructions

NOTE: Read the entire instruction manual before starting the installation

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . . . 4 Roof Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Step 2 - Plan for Sequence of Unit Installation . . . . . . 5 Curb-Mount Installation . . . . . . . . . . . . . . . . . . . . . 5 Pad-Mount Installation . . . . . . . . . . . . . . . . . . . . . . 5 Frame-Mount Installation . . . . . . . . . . . . . . . . . . . . 5 Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . . . 5 Roof Curb Mount . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Slab Mount (Horizontal Units Only) . . . . . . . . . . . 5 Alternate Unit Support . . . . . . . . . . . . . . . . . . . . . . 5 Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . . . . 7 For Units with Accessory Electric Heaters . . . . . . 7 Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 7 Positioning on Curb . . . . . . . . . . . . . . . . . . . . . . . . 8 Step 7 - Convert to Horizontal & Connect Ductwork . . 8 Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . . . 9 Economizer Hood Removal and Setup . . . . . . . . . 9 Two Position Damper Hood Removal and Setup . . . 9 Economizer Hood and Two-Position Hood . . . . . 10 Step 9 - Install External Condensate Trap and Line . . . 10 Step 10 - Make Electrical Connections . . . . . . . . . . . 11 Field Power Supply . . . . . . . . . . . . . . . . . . . . . . . . 11 Units without Factory-Installed Disconnect . . . . 11 Units with Factory-Installed Disconnect . . . . . . . 12 Convenience Outlets . . . . . . . . . . . . . . . . . . . . . . . 12 Factory-Option Thru-Base Connections . . . . . . . 13 Units without Thru-Base Connections . . . . . . . . . 14 Field Control Wiring . . . . . . . . . . . . . . . . . . . . . . . 14 Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Unit without Thru-Base Connection Kit . . . . . . . 14 Heat Anticipator Settings . . . . . . . . . . . . . . . . . . . 14 Electric Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Single Point Boxes and Supplementary Fuses . . . . . 16 PremierLinkt (Factory Option) . . . . . . . . . . . . . . . . . 17 Supply Air Temperature (SAT) Sensor . . . . . . . . . 17 Outdoor Air Temperature (OAT) Sensor . . . . . . . 19 EconoMi$ert2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Field Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Space Temperature (SPT) Sensors . . . . . . . . . . . . 19 Connect Thermostat . . . . . . . . . . . . . . . . . . . . . . . 19 Configure the Unit for Thermostat Mode . . . . . . 22 Economizer Controls . . . . . . . . . . . . . . . . . . . . . . . . 22 Outdoor Air Enthalpy Control . . . . . . . . . . . . . . . 22 Differential Enthalpy Control . . . . . . . . . . . . . . . . 22 Return Air Enthalpy Sensor . . . . . . . . . . . . . . . . . 22 Indoor Air Quality (CO2 sensor) . . . . . . . . . . . . . 22 Outdoor Air Quality Sensor . . . . . . . . . . . . . . . . . 23 Smoke Detector/Fire Shutdown (FSD) . . . . . . . . . 23 Filter Status Switch . . . . . . . . . . . . . . . . . . . . . . . . 24 Supply Fan Status Switch . . . . . . . . . . . . . . . . . . . 24 Remote Occupied Switch . . . . . . . . . . . . . . . . . . . 24 Space Relative Humidity Sensor . . . . . . . . . . . . . 24 Power Exhaust (output) . . . . . . . . . . . . . . . . . . . . . 24 CCN Communication Bus . . . . . . . . . . . . . . . . . . 24 RTU-MP Control System . . . . . . . . . . . . . . . . . . . . . . 26 Supply Air Temperature (SAT) Sensor . . . . . . . . . 28 Outdoor Air Temperature (OAT) Sensor . . . . . . . 28 EconoMi$ert2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Field Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Space Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Economizer Controls . . . . . . . . . . . . . . . . . . . . . . . . 29 Outdoor Air Enthalpy Control . . . . . . . . . . . . . . . 29 Differential Enthalpy Control . . . . . . . . . . . . . . . . 29

1

Page 1 Page 2
Image 1
Page 1 Page 2
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 InstallationHeat Anticipator Settings Field Control WiringUnits without Thru-Base Connections ThermostatHeater Model Number Field Control Wiring RacewaySingle Point Boxes and Supplementary Fuse Typical Module InstallationPremierLink Controller Supply Air Temperature SAT SensorTypical PremierLink Wiring Schematic Space Temperature SPT Sensors Outdoor Air Temperature OAT SensorField Connections EconoMi$ert2Space Thermostat Connections PremierLink Sensor Usage Thermostat Mode Space Sensor ModeEconomizer Controls Indoor CO2 Sensor 33ZCSENCO2 Connections Supply Fan Status Switch Filter Status SwitchPower Exhaust output Space Relative Humidity SensorRecommended Cables Connecting CCN bus Color Code RecommendationsRTU-MP Control System Typical RTU-MP System Control Wiring Diagram Type of I/O Connection PIN Name Numbers Inputs RTU-MP Controller Inputs and OutputsSpace Temperature Sensor Typical Wiring 33ZCT59SPT RTU-MP / Outdoor CO2 Sensor 33ZCSENCO2 Connections Connecting Discrete InputsGeneral Communication Wiring ProtocolsRTU-MP Troubleshooting Local AccessLEDs on the RTU-MP show the status of certain functions LEDsSystem ControllerSupply Air Smoke Detector LocationsCompleting Installation of Return Air Smoke Sensor See Completing Installation of Return Air SmokeAdditional Application Data STD Unit Wire/Fuse or Hacr Breaker Sizing DataUnit No P.E 208/230 208/230---3 STD EconoMi$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.
Top Page Image Contents