Carrier Official Air Conditioner Manual: 48HJD, 48HJE, and 48HJF Models

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LOW HEAT

48HJE/H004, 48HJD/G005-007 — 72,000 BTUH INPUT 48HJM004, 48HJL005,006 — 60,000 BTUH INPUT 48HEF003, 48HEE004, 48HED005 -

MEDIUM AND HIGH HEAT

48HJE/H005-007, 48HJF/K004 — 115,000 BTUH INPUT

48HJF/K005-007 — 150,000 BTUH INPUT

48HJM005,006; 48HJN004 — 90,000 BTUH INPUT

48HJN005,006 — 120,000 BTUH INPUT 48HEF004, 48HEE/F005, 48HED/E/F006 -

48HE,HJ

C06154

Fig. 74 ---Spark Gap Adjustment

Cleaning and Adjustment

5. Reinstall burner rack as described above.

1.Remove burner rack from unit as described above.

2.Inspect burners and, if dirty, remove burners from rack.

3.Using a soft brush, clean burners and cross-over port as required.

4.Adjust spark gap. (See Fig. 74.)

Step 15 Replacement Parts

A complete list of replacement parts may be obtained from any Carrier distributor upon request. Refer to Fig. 75 for a typical unit wiring schematic.

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Contents Electrical Shock Hazard Installation InstructionsFIRE, Explosion Hazard Roof CurbAlternate Unit Support 48HE,HJ Install Flue Hood Property Damage HazardPositioning Unit Operating Dimensions Weight 48HE48HJ 48HJ004-007 Base Unit Dimensions 48HE003-006 Base Unit Dimensions Field power supply Field control wiringHeat anticipator settings Nominal Capacity Physical Data 48HJHJE HJD Physical Data 48HE HEE HED Power Wiring Connections 48HE003---006 Electrical Data 48HEElectrical Data 48HJ 38.2 242 208/230---3---60 187 254 12.4 HUMIDI-MIZERADAPTIVE Dehumidification System AssemblyManual outdoor damper Convenience outletTypical Humidi-MiZer t Adaptive Dehumidification System Outdoor Air Temperature Sensor OAT Install the Supply Air Temperature SAT SensorInstall the Indoor Air Quality CO2 Sensor Enthalpy Sensors and ControlPremierLink Controller PremierLinkSensor UsagePremierLinktController Installed EconoMi$er IV Component Locations Return Air Enthalphy SensorECONOMI$ER IV Standard Sensors Outdoor Air Temperature OAT SensorECONOMI$ER IV Control Modes RUN EconoMi$er IV WiringExhaust Set Point Adjustment Differential Enthalphy ControlIndoor Air Quality IAQ Sensor Input Minimum Position Control ThermostatsDamper Movement Demand Controlled Ventilation DCV Enthalpy Changeover Set PointsAdjust Evaporator-Fan Speed Dehumidification of Fresh Air with DCV ControlBelt drive motors Belt Drive Motor Mounting CO2Sensor Standard SettingsAccessory static pressure 48HJ Fan Rpm at Motor Pulley Setting With High-Static MotorEvaporator-Fan Motor Data Standard Motor Evaporator-Fan Motor Data High-Static Motors48HE Outdoor Sound Power Total Unit 48HJ Outdoor Sound Power Total UnitUnit ARI Octave Bands Rating Airflow1100 Rpm Bhp1200 1300Rpm Bhp Watts Watts Rpm Bhp 1200 Rpm Bhp Watts1600 17001642 2333 1704 Rpm Bhp Watts 15002600 Watts Rpm Bhp 18002700 2800Bhp Watts Rpm 2700 2800 2900 3000Bhp 600 Bhp Watts 900 Watts RpmWatts Rpm Bhp 900 Bhp Watts 1700 1800 1900 20001900 2000 2100 2200 2300 2400 2500 800 350 904 438 999 535 1087 640 1169 753 913 569 1250 1500 1750 2000 2250 2500 2750 3000 Refrigerant Service Ports Internal WiringUnit Preparation Gas PipingCooling Main BurnersHeating Ventilation Continuous Fan Safety ReliefOperating Sequence Cooling units without economizer Heating units without economizerRoutine 3 OAT DX Cooling Temperature Control ExampleSubcooling Mode Units with HUMIDI-MIZERADAPTIVE Dehumidification SystemNormal Design Operation Evaporator Coil CleaningCondenser coil One-Row CoilsHigh Pressure Switch Condenser-Fan AdjustmentFilters Lubrication CompressorHUMIDI-MIZERSYSTEM Charging Cooling Charging Chart Standard 48HJ006 To USE Cooling Charging CHART, Standard Unit Combustion-Air Blower Flue Gas PassagewaysLED Error Code Description Limit SwitchRemoval and Replacement of GAS Train See Burner IgnitionLOW Heat Replacement PartsOFM Economi$er IV Troubleshooting Unit TroubleshootingDcv demand controlled ventilation and power exhaust Economi$er IV troubleshooting completionSymptom Cause Remedy LED Error Code Service AnalysisComponent Damage Hazard LED OFFProblem Cause Remedy Heating Service AnalysisCooling Service Analysis Inputs Outputs EconoMi$er IV Input/Output LogicSTART-UP Checklist

48HJ004---007, 48HE003---006 specifications

Carrier has long been a trusted name in the HVAC industry, and its models 48HJ004---007 and 48HE003---006 continue that legacy, offering efficient, reliable climate control solutions. These models are designed for different applications, ensuring optimal performance in a variety of environments.

The 48HJ series features advanced rooftop units that are ideal for commercial settings. They come equipped with high-efficiency scroll compressors that provide superior cooling and heating capabilities. This series is noted for its compact design, allowing for easy installation on rooftops or other constrained spaces. The units offer variable capacity operation, which enables them to efficiently meet varying heating and cooling demands without unnecessary energy consumption.

One of the standout features of the 48HJ series is its use of advanced microprocessor controls. This technology allows for precise temperature management and system diagnostics, enhancing the ease of operation while ensuring maximum comfort. Additionally, the series supports advanced connectivity options, enabling integration with building management systems. This allows for remote monitoring and control, making it easier for facility managers to keep track of performance and energy usage.

On the other hand, the 48HE series specializes in high-efficiency heating and cooling performance. These units are designed for larger commercial spaces and come with robust features for enhanced durability and efficiency. Like the 48HJ series, the 48HE models utilize scroll compressors and are equipped with a high-efficiency fan setup for improved airflow and reduced noise levels.

The 48HE also includes an innovative heat pump option, which allows the system to reverse the cooling process to provide heating, making it versatile across different seasonal demands. Both series are designed with eco-friendly refrigerants that comply with the latest environmental regulations, ensuring a minimized ecological footprint.

In terms of energy efficiency, both the 48HJ and 48HE series hold impressive SEER and EER ratings, contributing to reduced operational costs over time. The units are also built with durable, corrosion-resistant materials, ensuring longevity and low maintenance needs.

In conclusion, Carrier 48HJ004---007 and 48HE003---006 models are designed with cutting-edge technology, energy efficiency, and flexibility in mind. Their robust features make them ideal choices for commercial applications, providing reliable comfort and operational excellence. Whether for cooling or heating, these systems stand out in performance and sustainability, earning Carrier's reputation as a leader in the HVAC market.