Carrier 48HJD005-007 specifications Accessory Field-Installed Humidistat, 208/230-V Unit Shown

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Fig. 11 — Accessory Field-Installed Humidistat

OPTIONAL DURABLADE ECONOMIZER — The option- al economizer hood assembly is packaged and shipped in the filter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical dis- charge position.

NOTE: Horizontal discharge block-off plate is shipped with the air hood package. If unit is to be used for vertical discharge application, discard this plate.

Assembly:

1.Determine if ventilation air is required in building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 7.

2.Remove filter access panel by raising panel and swinging panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove filter ac- cess panel. Remove outdoor-air opening panel. Save pan- els and screws. See Fig. 13. Remove economizer, and re- move optional outdoor-air damper hood package from filter section (located behind economizer).

3.Assemble outdoor-air hood top and side plates as shown in Fig. 14. Install seal strips on hood top and sides. Put aside screen retainer and retainer screw for later assem- bly. Do not attach hood to unit at this time.

4.Slide economizer into unit and secure with screws. See Fig. 15.

NOTE: Be sure to engage rear economizer flange under tabs in vertical return-air opening.

5.To convert to horizontal discharge application:

a.Rotate economizer 90 degrees until the econo- mizer motor faces the condenser section (see Fig. 16).

b.Remove tape and shipping screw, rotate the baro- metric relief damper cover 90 degrees.

LEGEND

C— Contactor (Compressor) CCH — Crankcase Heater COMP — Compressor

FU — Fuse

HU — Humidistat

IFM — Indoor (Evaporator) Fan Motor LLSV — Liquid Line Solenoid Valve

S-LPS — Low-Pressure Switch (Subcooler Only) TRAN — Transformer

Factory Wiring

Accessory or Optional Wiring

c.Install horizontal discharge block-off plate over the opening on the access panel. (Block-off plate MUST be installed before installing hood assem- bly.) See Fig. 17.

6.Remove 12-pin blue and yellow wire jumper plug from factory wiring harness and store. Insert economizer plug into 12-pin plug of factory wiring harness. Remove tape and shipping screw from barometric relief damper. See Fig.18.

7.If ventilation air is not required, proceed to Step 8. If ven- tilation air is required, determine minimum position set- ting for required airflow. See Fig. 19. Adjust minimum position setting by adjusting the screws on the position setting bracket. Slide bracket until the top screw is in the position determined by Fig. 19. Tighten screws.

8.Remove tape from outdoor-air thermostat (OAT). Fasten OAT to inside of hood using screws and speed clips pro- vided. See Fig. 20. Make sure OAT terminals are posi- tioned up.

MOISTUREMISER

% RELATIVE HUMIDITY

Fig. 11 — Accessory Field-Installed Humidistat

Fig. 12 — Typical MoistureMiser Dehumidification Package Humidistat Wiring

(208/230-V Unit Shown)

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Contents CONTENTS SAFETY CONSIDERATIONSINSTALLATION Step 1 - Provide Unit SupportFig. 1 - Roof Curb Details 1′-4″Fig. 2 - Unit Leveling Tolerances Fig. 3 - Condensate Drain PanStep 7 - Make Electrical Connections Table 1 - Physical Data Table 1 - Physical Data cont Fig. 5 - Base Unit Dimensions - 48HJ004-007 1/2″3/4″ Step 8 - Adjust Factory-Installed Options Fig. 7 - Gas Piping Guide With AccessoryThru-the-Curb Service Connections Fig. 6 - Flue Hood DetailsFig. 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 Fig. 11 - Accessory Field-Installed Humidistat 208/230-V Unit ShownFig. 13 - Typical Access Panel Locations Fig. 15 - Durablade Economizer Installed in UnitFig. 16 - Horizontal Durablade Economizer Installation Fig. 14 - Outdoor-Air Hood DetailsWiring Harness Fig. 19A - Durablade Economizer Damper Minimum Position SettingFig. 19B - Durablade Economizer Minimum Position Damper Setting Fig. 20 - Outdoor-Air Thermostat Enthalpy Control InstallationRelief Damper Characteristics Fig. 24 - Typical Access Panel LocationsFig. 25 - Exhaust Air Hood Assembly Fig. 22 - Durablade Economizer BarometricFig. 28 - Rear EconoMi$er Flange Installation Fig. 26 - Outdoor-Air Hood AssemblyFig. 27 - Completed Hood Assembly Fig. 29 - EconoMi$er InstalledFig. 31 - EconoMi$er Sensor Wiring Fig. 33 - Typical Access Panel LocationsFig. 32 - Wiring Diagram for Power Exhaust System POWER EXHAUST SYSTEM HIGH VOLTAGEFig. 34 - Supply-Air Sensor Placement Table 4 - Default Potentiometer SettingsFig. 35 - EconoMi$er Control Adjustment Potentiometers Factory SettingsStep 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 Single-Phase Units 3-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 FIOP - Factory-Installed Option Table 26 - Economizer Static Pressure Drop in. wgTable 27 - FIOP MoistureMiser Dehumidification Package Static Pressure Drop in. wgPRE-START-UP START-UPHeating Operating SequenceTable 28 - Altitude Compensation When the supply-air temperature falls between 57 F and Fig. 39 - MoistureMiser Option Operation SERVICE LubricationFig. 40 - Cleaning Condenser Coil Fig. 41 - Propping Up Top Panel Fig. 42 - Separating Coil SectionsFig. 43 - Condenser-Fan Adjustment Fig. 44 - Cooling Charging Chart Standard 48HJ004Fig. 45 - Cooling Charging Chart Standard 48HJ005 Fig. 46 - Cooling Charging Chart Standard 48HJ006 Fig. 47 - Cooling Charging Chart Standard 48HJ007Fig. 48 - Cooling Charging Chart, 48HJ004 with Optional MoistureMiser Dehumidification Package Table 29 - LED Error Code Description Fig. 52 - Burner Section Details Fig. 53 - Burner Tray DetailsFig. 54 - Spark Gap Adjustment LOW HEAT 48HJE004, 48HJD005-007 - 72,000 BTUH INPUTMEDIUM AND HIGH HEAT 48HJE005-007, 48HJF004 - 115,000 BTUH INPUT 48HJF005-007 - 150,000 BTUH INPUTTROUBLESHOOTING Table 30 - LED Error Code Service AnalysisTable 31 - Heating Service Analysis Table 32 - Durablade Economizer Service AnalysisTable 34 - EconoMi$er Troubleshooting Table 33 - EconoMi$er Flash Code IdentificationCritical Table 35 - MoistureMiser Dehumidification Subcooler Service Analysis Table 36 - Cooling Service Analysis Compressor operates continuouslyFig. 55 - Typical Wiring Schematic and Component Arrangement 208/230 3-Phase Unit ShownLEGEND AND NOTES FOR FIG NOTES FOR FIGReplaces 48HJ-17SI Page START-UP CHECKLIST Remove and Store in Job File I. PRELIMINARY INFORMATIONII. PRE-START-UP insert checkmark in box as each item is completed III. START-UP
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