Carrier 48EZ-A installation instructions Supply Duct Panels

Page 12

48EZ -- A

Horizontal Duct Covers

Basepan Downflow (Vertical) Supply Knockout

A09061

Basepan Downflow (Vertical) Return Knockout

Return Duct Panels

Supply Duct Panels

A09060

Fig. 8 - Supply and Return Duct Opening

Return & Supply Duct Panels from

Underside of Base (Alternate Method)

A09420

Fig. 9 - Vertical (Downflow) Discharge Duct Knockouts

12

Page 11 Page 13
Image 12
Page 11 Page 13
Contents Table of Contents Safety ConsiderationsReceiving and Installation IntroductionCheck Equipment Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Small Curb Rig and Place Unit Provide ClearancesPersonal Injury or Property Damage HazardInstall Flue Hood Install Gas PipingConnect Condensate Drain InspectionFire or Explosion Hazard Sediment TrapPhysical Data Unit 48EZ-A Unit Size 48EZPhysical Data Unit 48EZ-A Cont’d Maximum Gas Flow CapacityHeating Inputs Install Duct Connections Configuring Units for Downflow Vertical DischargeAlternate Method Unit Component Damage HazardSupply Duct Panels Install Electrical Connections Special Procedures for 208-V OperationHigh-Voltage Connections Control Voltage ConnectionsBalance Point Setting-Thermidistat or Hybrid Thermostat PRE-START-UPTransformer Protection FIRE, EXPLOSION, Electrical Shock HazardStart-up Heating and Make Adjust- ments START-UPCheck for Refrigerant Leaks Unit Sequence of OperationAdjust Gas Input Check Heating ControlCheck Gas Input Unit Damage HazardAirflow and Temperature Rise Limit SwitchesRollout Switch Check Burner FlameStart-up Cooling and Make Adjust- ments Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments Checking Cooling Control OperationTwo Cooling Fan Speeds Set-up Dehumidification feature used Gas Heating Fan Speed Set-upContinuous Fan Operation Color Coding for Indoor Fan Motor LeadsFilter Pressure Drop Table IN. W.C 48EZ-A Wet Coil Pressure Drop IN. W.C741 638 547 415 Heating Low Blue 1234 1168 1093 1021 961 894 825 759 687 Heating Low Blue 1736 1695 1642 1601 1553 1512 1465 1427 1381 65oF Heating 1927 1893 1858 1824 1791 1759 1720 1689 1640 65oF Heating 48EZ a 208/230-3-60 Wiring Diagram, Unit 48EZ-A Cooling Charging Table-Subcooling Maintenance Cleaning the Blower Motor and WheelAir Filter Indoor Blower and MotorLimit Switch Induced Draft combustion air Blower AssemblyBurner Ignition Main BurnersElectrical Controls and Wiring Outdoor FanRefrigerant Circuit Pressure Switches Loss of Charge SwitchGas Input Indoor AirflowHigh-Pressure Switch Copeland Scroll Compressor Puron RefrigerantExplosion Hazard Unit Operation and Safety Hazard Refrigerant SystemCompressor Oil Troubleshooting START-UP ChecklistPuronr R-410A Quick Reference Guide Troubleshooting Guide Cooling or Heat Pump Heating Mode Symptom Cause RemedyTroubleshooting Guide-Heating Troubleshooting Guide-LED Error CodesTemperatures Remove and Store in Job FilesPreliminary Information Model no III. START-UP Electrical Supply Voltage Compressor AmpsCatalog No 48EZ---06SI
Related manuals
Manual 10 pages 39.3 Kb

48EZ-A specifications

The Carrier 48EZ-A and 48VT-A are two advanced rooftop unit air conditioners that exemplify innovation and efficiency in HVAC technology. Designed for commercial applications, these units provide optimal comfort while ensuring energy conservation and reliability.

One of the standout features of the Carrier 48EZ-A is its high-efficiency cooling system. With SEER ratings reaching up to 16, this model uses advanced compressor technology to ensure that energy consumption stays low while maximizing cooling output. The 48EZ-A incorporates a two-stage scroll compressor that enhances performance during partial load conditions, making it ideal for varying temperature demands throughout the day.

Meanwhile, the Carrier 48VT-A is designed with variable speed technology that allows for precise modulation of airflow and cooling capacity, adapting seamlessly to real-time building conditions. This technology not only improves comfort but also significantly reduces energy usage by optimizing operational efficiency.

Both units are equipped with advanced microprocessor controls that facilitate superior management of the HVAC system. The controls offer programmable options allowing for enhanced control over system operation, scheduling, and diagnostics. This promotes easy maintenance and ensures long-term reliability.

In terms of construction, the Carrier 48EZ-A and 48VT-A units are built with corrosion-resistant materials, ensuring durability and longevity even in challenging environments. The cabinet is designed with insulated panels to minimize sound levels, making them suitable for installation in noise-sensitive locations.

Moreover, both models are equipped for easy installation and serviceability. The logical wiring design and access ports streamline maintenance, reducing downtime and optimizing overall performance. Additionally, they feature an energy-efficient fan design that maximizes airflow while minimizing energy use.

In summary, the Carrier 48EZ-A and 48VT-A rooftop units stand out in the HVAC market for their energy efficiency, advanced technology, and durable construction. These features make them ideal choices for various commercial applications where comfort, efficiency, and reliability are paramount. The combination of high-performance components and user-friendly features positions these models as leaders in modern HVAC solutions.
Top Page Image Contents