Carrier 48HJ004---007, 48HE003---006 Flue Gas Passageways, Combustion-Air Blower

Page 55

 

 

48HE - 2 TON CHARGING CHART

 

F

C

 

 

 

125

52

 

 

 

 

 

 

115

46

 

 

 

 

 

 

105

41

 

 

Suction Line Temperature (deg C)

 

95

35

 

 

 

85

29

 

 

 

 

 

 

 

5.5

10.5

15.5

20.5

25.5

75

24

 

 

 

 

105.0

 

 

 

 

 

 

 

100.0

 

 

 

 

698.0

 

 

 

 

 

 

 

 

(psig)

95.0

 

 

 

 

648.0

(kpa)

 

 

 

 

 

 

 

 

 

 

 

Line Pressure

90.0

 

 

 

 

 

Line Pressure

85.0

 

 

 

 

598.0

 

 

 

 

 

80.0

 

 

 

 

548.0

Suction

75.0

 

 

 

 

 

Suction

 

 

 

 

 

498.0

 

 

 

 

 

 

 

 

70.0

 

 

 

 

 

 

 

65.0

 

 

 

 

448.0

 

 

42

52

62

72

 

 

 

Suction Line Temp (deg F)

C06148

Fig. 68 ---Cooling Charging Chart,

Standard 48HE003

 

 

 

48HE - 3 TON CHARGING CHART

F

C

 

 

 

115

46

 

 

 

 

 

 

 

 

105

41

 

 

 

 

 

 

 

 

95

35

 

 

 

Suction Line Temperature (deg C)

85

29

 

 

 

75

24

 

6.1

 

11.1

 

16.1

 

21.1

 

 

 

95.0

 

 

 

 

 

 

648.2

 

 

 

 

 

 

 

 

 

 

(psig)

 

 

 

 

 

 

 

 

(kpa)

Pressure

85.0

 

 

 

 

 

 

598.2

Pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Line

 

 

 

 

 

 

 

548.2

Line

 

 

 

 

 

 

 

 

Suction

75.0

 

 

 

 

 

 

 

Suction

 

 

 

 

 

 

 

498.2

 

65.0

 

 

 

 

 

 

448.2

 

 

43

48

53

58

63

68

73

78

 

Suction Line Temp (deg F)

C06149

Fig. 69 ---Cooling Charging Chart,

Standard 48HE004

48HE - 4 TON CHARGING CHART

F

C

115

46

 

105

41

 

95

35

 

85

29

Suction Line Temperature (deg C)

75

24

 

5.6

 

10.6

15.6

 

20.6

 

25.6

 

 

 

 

 

 

 

 

 

692.0

 

(psig)

97.0

 

 

 

 

 

 

 

(kpa)

 

 

 

 

 

 

 

642.0

Pressure

 

 

 

 

 

 

 

Pressure

87.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

592.0

Line

 

 

 

 

 

 

 

Line

 

 

 

 

 

 

 

 

Suction

77.0

 

 

 

 

 

 

542.0

Suction

 

 

 

 

 

 

 

 

67.0

 

 

 

 

 

 

492.0

 

 

42

47

52

57

62

67

72

77

 

Suction Line Temp (deg F)

C06150

Fig. 70 ---Cooling Charging Chart,

Standard 48HE005

 

 

48HE - 5 TON CHARGING CHART

F

C

 

 

115

46

 

 

 

 

 

 

 

 

105

41

 

 

 

 

 

 

 

 

95

35

 

 

 

Suction Line Temperature (deg C)

85

29

 

 

 

75

24

 

 

 

 

 

 

 

 

 

0.0

5.0

 

10.0

15.0

 

20.0

25.0

 

 

115.0

 

 

 

 

 

 

810.0

 

 

 

 

 

 

 

 

 

 

(psig)

105.0

 

 

 

 

 

 

710.0

(kpa)

 

 

 

 

 

 

 

 

Pressure

95.0

 

 

 

 

 

 

610.0

Pressure

 

 

 

 

 

 

 

85.0

 

 

 

 

 

 

 

Line

 

 

 

 

 

 

 

Line

 

 

 

 

 

 

 

510.0

Suction

75.0

 

 

 

 

 

 

 

Suction

 

 

 

 

 

 

 

410.0

 

65.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55.0

 

 

 

 

 

 

310.0

 

 

42

47

52

57

62

67

72

77

 

Suction Line Temp (deg F)

C06151

Fig. 71 ---Cooling Charging Chart,

Standard 48HE006

TO USE COOLING CHARGING CHARTS, UNITS WITH HUMIDI-MIZERADAPTIVE DEHUMIDIFICATION

SYSTEM

Refer to charts (Fig. 64-67) to determine the proper leaving condenser pressure and temperature.

Example (Fig. 64):

Leaving Condenser Pressure . . . . . . . . . . . . . . . . . 250 psig Leaving Condenser Temperature . . . . . . . . . . . . . . . 105°F

NOTE: When using the charging charts, it is important that only the subcooling/reheat dehumidification coil liquid line solenoid valve be energized. The subcooling/reheat dehumidification coil liquid line solenoid valve MUST be energized to use the charging charts and the outdoor motor speed controller jumpered to run the fan at full speed.

Step 10 Flue Gas Passageways

To inspect the flue collector box and upper areas of the heat exchanger:

1.Remove the combustion blower wheel and motor assembly according to directions in Combustion-Air Blower section below.

2.Remove the 3 screws holding the blower housing to the flue cover.

3.Remove the flue cover to inspect the heat exchanger.

4.Clean all surfaces as required using a wire brush.

Step 11 Combustion-Air Blower

Clean periodically to ensure proper airflow and heating efficiency. Inspect blower wheel every fall and periodically during heating season. For the first heating season, inspect blower wheel bimonthly to determine proper cleaning frequency.

To inspect blower wheel, remove draft hood and screen. Shine a flashlight into opening to inspect wheel. If cleaning is required, remove motor and wheel as follows:

1.Slide burner access panel out.

2.Remove the 5 screws that attach induced-draft motor assembly to the vestibule cover.

3.Slide the motor and blower wheel assembly out of the blower housing. The blower wheel can be cleaned at this point. If additional cleaning is required, continue with Steps 4 and 5.

4. To remove blower from the motor shaft, remove

2setscrews.

5.To remove motor, remove the 4 screws that hold the motor to mounting plate. Remove the motor cooling fan

48HE,HJ

55

Image 55
Contents Electrical Shock Hazard Installation InstructionsRoof Curb FIRE, Explosion HazardAlternate Unit Support 48HE,HJ Property Damage Hazard Install Flue HoodPositioning 48HE Unit Operating Dimensions Weight48HJ 48HJ004-007 Base Unit Dimensions 48HE003-006 Base Unit Dimensions Field control wiring Field power supplyHeat 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 Convenience outlet AssemblyHUMIDI-MIZERADAPTIVE Dehumidification System Manual outdoor damperTypical Humidi-MiZer t Adaptive Dehumidification System Enthalpy Sensors and Control Install the Supply Air Temperature SAT SensorOutdoor Air Temperature Sensor OAT Install the Indoor Air Quality CO2 SensorPremierLink 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 WiringDifferential Enthalphy Control Exhaust Set Point AdjustmentIndoor Air Quality IAQ Sensor Input Thermostats Minimum Position ControlDamper Movement Demand Controlled Ventilation DCV Enthalpy Changeover Set PointsDehumidification of Fresh Air with DCV Control Adjust Evaporator-Fan SpeedBelt drive motors Belt Drive Motor Mounting CO2Sensor Standard SettingsEvaporator-Fan Motor Data High-Static Motors 48HJ Fan Rpm at Motor Pulley Setting With High-Static MotorAccessory static pressure Evaporator-Fan Motor Data Standard MotorAirflow 48HJ Outdoor Sound Power Total Unit48HE Outdoor Sound Power Total Unit Unit ARI Octave Bands Rating1300 Rpm Bhp1100 1200Rpm Bhp Watts 1700 Rpm Bhp WattsWatts Rpm Bhp 1200 16001642 2333 1704 Rpm Bhp Watts 15002800 Watts Rpm Bhp 18002600 27002700 2800 2900 3000 Bhp Watts RpmBhp 600 Watts Rpm Bhp Watts 900Watts 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 Gas Piping Internal WiringRefrigerant Service Ports Unit PreparationMain Burners CoolingHeating Heating units without economizer Safety ReliefVentilation Continuous Fan Operating Sequence Cooling units without economizerRoutine 3 OAT DX Cooling Temperature Control ExampleUnits with HUMIDI-MIZERADAPTIVE Dehumidification System Subcooling ModeNormal Design Operation One-Row Coils CleaningEvaporator Coil Condenser coilLubrication Compressor Condenser-Fan AdjustmentHigh Pressure Switch FiltersHUMIDI-MIZERSYSTEM Charging Cooling Charging Chart Standard 48HJ006 To USE Cooling Charging CHART, Standard Unit Combustion-Air Blower Flue Gas PassagewaysBurner Ignition Limit SwitchLED Error Code Description Removal and Replacement of GAS Train SeeLOW Heat Replacement PartsOFM Economi$er IV troubleshooting completion Unit TroubleshootingEconomi$er IV Troubleshooting Dcv demand controlled ventilation and power exhaustLED OFF LED Error Code Service AnalysisSymptom Cause Remedy Component Damage HazardProblem 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.