Carrier 48HJD005-007 specifications Durablade Economizer Barometric, Relief Damper Characteristics

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Fig. 22 — Durablade Economizer Barometric

 

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PRESSURE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Fig. 22 — Durablade Economizer Barometric

Relief Damper Characteristics

OPTIONAL ECONOMI$ER — See Fig. 23 for EconoMi$er component locations.

1.To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is now disengaged from the track and can be removed. Remove the indoor coil access panel and discard. See Fig. 24.

If installing an optional Power Exhaust Assembly, refer to the EconoMi$er Power Exhaust Installation Instructions.

Controller should be mounted in vertical position as shown in Fig. 23.

2.Assemble the hood assembly as follows:

Remove the EconoMi$er hood from its packaging. Re- move shipping brackets holding hood package to EconoMi$er. Locate the outdoor-air opening panel. See Fig. 25. Remove hood assembly shipping brackets locat- ed on the back (sloped) side of the EconoMi$er assembly. These brackets are used to retain the hood assembly dur- ing shipping only.

3.Install the 1/8 x 3/4-in. seal strip on the exhaust air hood side panels and the bottom bracket. Assemble the exhaust air hood to the outdoor-air opening panel as shown in Fig. 25, using the screws provided. Do not attach hood assembly to unit at this time.

4.Install the 1/8 x 3/4 in. seal strip on the outdoor-air hood top and side panels. Assemble the outdoor-air hood to the outdoor-air opening panel as shown in Fig. 26, using the screws provided. Do not attach hood assembly to the unit at this time.

5.Slide the outdoor-air inlet screens into the screen track on the hood side panels. While holding the screens in place, fasten the screen retainer to the hood using the screws provided. Repeat the process for the barometric exhaust air screen. Do not attach completed (Fig. 27) hood as- sembly to unit at this time.

6.Install the EconoMi$er assembly into the rooftop unit. See Fig. 28 and 29.

NOTE: Be sure to engage rear EconoMi$er flange under tabs in return-air opening of the unit base. See Fig. 28.

7.Install the outdoor-air block-off plate, then secure the EconoMi$er with the screws provided. See Fig. 29.

8.Remove and discard the 12-pin jumper plug from the unit wiring harness located int he upper left corner and insert

the EconoMi$er plug into the unit wiring harness. Refer to wiring diagram Fig. 30 and 31. Also refer to Fig. 32 if installing an accessory power exhaust.

9.Install the complete hood assembly on the unit and secure using the screws provided.

10.Remove the indoor fan motor access panel. See Fig. 33.

11.Mount the supply-air temperature sensor to the lower left portion of the indoor blower housing with the two

(2) screws provided (see Fig. 34). Connect the violet and pink wires to the corresponding connections on the supply-air temperature sensor. Replace the indoor fan motor access panel.

ECONOMI$ER

CONTROLLER

PLUG

GEAR-DRIVEN

 

 

DAMPER

OUTDOOR AIR

TEMPERATURE

SENSOR

Relief Damper Characteristics ACTUATOR

BAROMETRIC RELIEF DAMPERS

Fig. 23 — Economizer Component Locations

OUTDOOR-AIR

FILTER ACCESS

OPENING PANEL

PANEL

Fig. 24 — Typical Access Panel Locations

OUTDOOR AIR

OPENING PANEL Fig. 23 — Economizer Component LocationsFig. 24 — Typical Access Panel LocationsEXHAUST AIR HOOD TOP

SCREEN

RETAINER

 

EXHAUST AIR

SEAL STRIP

HOOD SIDES

 

Fig. 25 — Exhaust Air Hood Assembly EXHAUST AIR SCREEN

EXHAUST AIR BOTTOM BRACKET

Fig. 25 — Exhaust Air Hood Assembly

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Contents Step 1 - Provide Unit Support CONTENTSSAFETY CONSIDERATIONS INSTALLATION1′-4″ Fig. 1 - Roof Curb DetailsFig. 3 - Condensate Drain Pan Fig. 2 - Unit Leveling TolerancesStep 7 - Make Electrical Connections Table 1 - Physical Data Table 1 - Physical Data cont Fig. 5 - Base Unit Dimensions - 48HJ004-007 1/2″3/4″ Fig. 6 - Flue Hood Details Step 8 - Adjust Factory-Installed OptionsFig. 7 - Gas Piping Guide With Accessory Thru-the-Curb Service ConnectionsFig. 8 - Power Wiring Connections Fig. 10 - Field Control Wiring RacewayFig. 9 - Low-Voltage Connections With or Without Economizer Never operate a motor where a phase imbalance in supply volt age is greater than 2%. Use the following formula to determinethe percent of voltage imbalance Table 2C - 48HJ High-Static Motor Units Without Electrical Convenience Outlet 208/230-V Unit Shown Fig. 11 - Accessory Field-Installed HumidistatFig. 14 - Outdoor-Air Hood Details Fig. 13 - Typical Access Panel LocationsFig. 15 - Durablade Economizer Installed in Unit Fig. 16 - Horizontal Durablade Economizer InstallationFig. 20 - Outdoor-Air Thermostat Enthalpy Control Installation Wiring HarnessFig. 19A - Durablade Economizer Damper Minimum Position Setting Fig. 19B - Durablade Economizer Minimum Position Damper SettingFig. 22 - Durablade Economizer Barometric Relief Damper CharacteristicsFig. 24 - Typical Access Panel Locations Fig. 25 - Exhaust Air Hood AssemblyFig. 29 - EconoMi$er Installed Fig. 28 - Rear EconoMi$er Flange InstallationFig. 26 - Outdoor-Air Hood Assembly Fig. 27 - Completed Hood AssemblyPOWER EXHAUST SYSTEM HIGH VOLTAGE Fig. 31 - EconoMi$er Sensor WiringFig. 33 - Typical Access Panel Locations Fig. 32 - Wiring Diagram for Power Exhaust SystemPotentiometers Factory Settings Fig. 34 - Supply-Air Sensor PlacementTable 4 - Default Potentiometer Settings Fig. 35 - EconoMi$er Control AdjustmentStep 9 - Adjust Evaporator-Fan Speed - Ad Fig. 38 - Evaporator-Fan Pulley AdjustmentFig. 37 - Belt-Drive Motor Mounting Table 5A - 48HJ Fan Rpm at Motor Pulley Setting With Standard Motor Table 6 - Evaporator-Fan Motor Data - Standard MotorTable 7 - Evaporator-Fan Motor Data - High-Static Motors Table 8 - Motor Nominal Horsepower Table 9 - Outdoor Sound Power Total UnitBels Table 12 - 48HJ005 Fan Performance - Vertical Discharge Units With Standard Motor 3-Phase Units Single-Phase UnitsTable 16 - 48HJ007 Fan Performance - Vertical Discharge Units With Standard Motor Table 18 - 48HJ004 Fan Performance - Horizontal Discharge Units With Standard Motor Table 20 - 48HJ005 Fan Performance - Horizontal Discharge Units With Standard Motor 3-Phase Units Package Static Pressure Drop in. wg FIOP - Factory-Installed OptionTable 26 - Economizer Static Pressure Drop in. wg Table 27 - FIOP MoistureMiser DehumidificationSTART-UP PRE-START-UPHeating Operating SequenceTable 28 - Altitude Compensation When the supply-air temperature falls between 57 F and Fig. 39 - MoistureMiser Option Operation Fig. 42 - Separating Coil Sections SERVICELubrication Fig. 40 - Cleaning Condenser Coil Fig. 41 - Propping Up Top PanelFig. 43 - Condenser-Fan Adjustment Fig. 44 - Cooling Charging Chart Standard 48HJ004Fig. 45 - Cooling Charging Chart Standard 48HJ005 Fig. 47 - Cooling Charging Chart Standard 48HJ007 Fig. 46 - Cooling Charging Chart Standard 48HJ006Fig. 48 - Cooling Charging Chart, 48HJ004 with Optional MoistureMiser Dehumidification Package Fig. 52 - Burner Section Details Fig. 53 - Burner Tray Details Table 29 - LED Error Code Description48HJF005-007 - 150,000 BTUH INPUT Fig. 54 - Spark Gap AdjustmentLOW HEAT 48HJE004, 48HJD005-007 - 72,000 BTUH INPUT MEDIUM AND HIGH HEAT 48HJE005-007, 48HJF004 - 115,000 BTUH INPUTTable 30 - LED Error Code Service Analysis TROUBLESHOOTINGTable 32 - Durablade Economizer Service Analysis Table 31 - Heating Service AnalysisTable 34 - EconoMi$er Troubleshooting Table 33 - EconoMi$er Flash Code IdentificationCritical Table 35 - MoistureMiser Dehumidification Subcooler Service Analysis Compressor operates continuously Table 36 - Cooling Service Analysis208/230 3-Phase Unit Shown Fig. 55 - Typical Wiring Schematic and Component ArrangementNOTES FOR FIG LEGEND AND NOTES FOR FIGReplaces 48HJ-17SI Page III. START-UP START-UP CHECKLIST Remove and Store in Job FileI. PRELIMINARY INFORMATION II. PRE-START-UP insert checkmark in box as each item is completed
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