Greenheck Fan 470656 manual Sequence of Operation Modulation Sequence, Inlet Air Sensor iAS

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Sequence of Operation

2:1 Modulation Sequence, continued

•N.O. contact on cool relay (RC) is energized and closed

•Power passes to evaporative cooling pump (P1)

*If DX or chilled water coils are used rather than an evaporative cooler, the cooling sequence of operation will depend on the coil controls. Cooling coil controls are supplied by others.

Operation

4:1 Modulation and

8:1 Staged Controller

L1	L2	L3
Function		Up
Enter		Down

Water Wizard™ User Interface

Key Function Description

Program Mode

Program Mode allows the user to view the Program Menu and edit the factory default settings. To access Program Mode and view the Setpoints Menu, press and hold the Function key for three seconds. While viewing the Setpoints Menu, press the Up or Down key to scroll through the menu options. To view the setting of the selected menu option, press the Enter key. To edit the setting, press the Up or Down key while viewing the setting. To save the setting and return to the Setpoints Menu press the Enter key.

To return to the Setpoints Menu without saving the change, wait 15 seconds. To exit Program Mode from the Setpoints Menu, wait 15 seconds.

Warning

Changing the default settings will significantly affect performance. Only change a setting after reading and understanding this entire manual.

Note

The Enter key must be pressed to save any changes made to a setting.

Inlet Air Sensor (iAS)

The inlet air sensor monitors the temperature of the inlet air. If the inlet air is above the sensor’s set point, the inlet air sensor shuts off the furnace and continues to supply the warm outside air. The inlet air sensor is preset to the factory recommended 65ºF for 8:1 and 60ºF for 4:1.

Discharge Air Temperature (dtS)

The discharge air temperature setting is the temperature that the unit will discharge. The discharge air temperature is preset to the factory recommended 70ºF. The actual discharge air temperature is the default display.

Outside Air Temperature (OAt)

To temporarily display the outside air temperature, use the Up or Down key until the display reads “OAt,” then press the Enter key.

40 Model IG / IGX Make-Up Air

®

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Contents Installation, Operation and Maintenance Manual General Safety InformationInspection and Maintenance during Storage ReceivingHandling StorageTable of Contents Clearance to Combustibles / Service ClearancesInstallation of Indoor Unit Installation of Arrangement DB / HZInstallation of Roof Mounted Unit Arrangement DBC Install Combination Curb AdaptorInstall Curb/Equipment Supports Assemble and Attach WeatherhoodInstall Exhaust Options Install Exhaust FanInstall Supply Unit Installation of Evaporative Cooling Module optional Installation of Venting for Outdoor UnitsInstallation of Venting for Indoor Units Venting MethodsStandard Indoor Venting Separated Combustion Concentric VentingInstalling Exhaust Vent Pipe Installation of Standard Indoor VentingVent Pipe Diameter Installation of Concentric Venting General Concentric Venting HorizontalConcentric Venting Vertical Intake END Installation of Two Pipe Venting Horizontal Seal Wall OpeningsInstallation of Two Pipe Venting Vertical Seal Roof PenetrationInstallation Electrical Wiring Wire the Evaporative Cooler optional Install Economizer Sensors optionalInstall Discharge Air Sensor optional Install DDC Interface OptionalInstallation of Gas Piping Install Additional Regulator if RequiredDetermine the Supply Gas Requirements Connect the Supply Gas LineInstallation Evaporative Cooler Piping optional Install the Water Supply LineInstall the Drain Line Check/Adjust Water LevelInstallation of Water WizardTM optional Install Normally Closed Supply Line/ SolenoidInstall Normally Open Drain Line/ Solenoid Water Wizard Valves When provided by manufacturerInstallation of Water Wizard Installation Direct Expansion DX Coil Piping optionalWire the Solenoids Wire the Temperature SensorInstall Suction Line Mount the Remote Sensing Bulb By OthersCheck Coil Piping for Leaks Evacuate and Charge the CoilInstallation of Chilled Water Coil Piping optional Installation of Building Pressure Control optionalStart-Up Blower Set-up Optional Components Reset the Temperature Setting Start-Up Furnaces all unitsStart-Up Single Stage Control Send Unit to High FireStart-Up 21 Staged Control Start-Up 81 Staged ControlSend Unit to Low Fire Check the Low Fire Manifold PressureAccess the Setpoints Menu Access the Discharge Air Temperature SettingEdit the Setting Access the Inlet Air Sensor SettingAccess the Room Override Setting High Fire Adjustment Start-Up 21 Electronic ModulationStart-Up 41 Electronic Modulation Exit High Fire ModeCheck the Low Fire Manifold Pressures Access the Setpoints Menu Verify Sensor Installation Start-Up Economizer optionalSet Minimum Outside Air Set the Enthalpy Changeover Set Point optionalStart-Up Evaporative Cooling optional Start-Up Water Wizard optional Operation - Water Wizard optional Check Operation VAV Units optional External Signal a variableBuilding Pressure Control Check Operation Recirculating Units optional Recirculation OperationBuilding Pressure Control a Damper actuator may take a fewSequence of Operation Staged Sequence Exhaust Fan Contact S1 Manually Closed optionalSequence of Operation 21 Modulation Sequence Discharge Air Temperature dtS Outside Air Temperature OAtSequence of Operation Modulation Sequence Operation Modulation Staged ControllerSequence of Operation 41 Electronic Modulation Program Revision NumberOptional Room Override ROt Light Off BlinkingSequence of Operation Electronic Modulation Sequence of Operation Staged Control Staging Control Sequence of OperationOperation and Errors Ignition Controller Following are the green LED codes of operationOption EC-1 Outside Air Temperature Reference Option EC-3 Differential Temperature ControlOperation Economizer Option EC-2 Outside Air Enthalpy ReferenceTroubleshooting Blower Does Not OperateMotor Over Amps Insufficient Airflow Too Much AirflowExcessive Noise or Vibration Single or 21 Stage Furnace Will Not Light Improper manifold pressureModulating Furnace Will Not Light Heat transformer TR2 fault Ignition controllers IC# failed Staged Furnace Will Not Light Internal high limit tripped temperature above set point Evaporative Cooler does not Operate Recirculating pump Water Blows through Evaporative CoolerAdjust the On Time Factor Adjust the Manual Supply ValveWater Wizard Improper Water Supply Maintenance Routine Belt DrivesSnow Accumulation WheelsMotors FiltersChilled Water Coils Evaporative CoolersMaintenance Fall Flushing Coils Reference Model IG Venting Connection Location Reference Model IGX Venting Connection LocationReference Model IG Single or 2 Stage Reference Model IG Staged Reference Model IG Modulation Modulating Reference Model IGX Blower Control Center Manifold Gas Pressure Test Port Staged Inch Gas Supply Manifold Gas Pressure Test Port Modulating Staged Reference Performance Table Performance TableReference Start-Up Checklist Start-Up ChecklistMaintenance Log Warranty