Greenheck Fan 470656 manual Manifold Gas Pressure Test Port Modulating Staged

Page 69

Reference - Model IGX (2:1 Modulation)

Reference - Model IGX (4:1 Modulation)

5

1

 

6

 

4

2

3

 

7

 

9

8

Manifold

Gas Pressure

Test Port

Modulating

Staged

Gas Valve

Gas Valve

3/4 inch Gas Supply Connection

6 10

9

3

1

2

 

7

 

4

 

5

 

 

8

 

 

 

11

 

 

11

Manifold

Gas Pressure

Test Port

Modulating

Staged

Gas Valve

Gas Valve

3/4 inch Gas Supply Connection

note

This is a typical furnace control center, the control center in your unit may be different. Reference the ladder diagram on the inside of the control center door for a unit specific wiring diagram.

1.Low Voltage Transformer - Provides low voltage to the ignition controller and amplifier.

2.Control Terminal Block - Provides wiring access to heat controls.

3.Control Terminal Block - Provides wiring access to heat controls.

4.Ignition Controller - Controls the ignition of the furnace. Maintains safe operation of the furnace.

5.Amplifier - Controls the modulating valve based on the input from the temperature selector and the discharge air sensor.

6.Temperature Selector - Allows the user to adjust discharge air temperature.

7.Combustion Blower Contact - Passes power to the combustion blower.

8.Airflow Switch - Monitors the airflow inside the heat exchanger to ensure proper combustion airflow.

9.High Fire Relay - Allows furnace to ignite on high fire.

®

note

This is a typical furnace control center, the control center in your unit may be different. Reference the ladder diagram on the inside of the control center door for a unit specific wiring diagram.

1.Low Voltage Transformer - Provides low voltage to the ignition controller.

2.Low Voltage Transformer - Provides low voltage to the 4:1 electronic modulation controller.

3.Low Voltage Transformer - Provides low voltage to the amplifier.

4.Control Terminal Block - Provides wiring access to controls.

5.Control Terminal Block - Provides wiring access to controls.

6.Input Converter - Receives and converts signal from Building Management System (BMS).

7.Ignition Controllers - Controls the ignition of the furnace. Maintains safe operation of the furnace.

8.Modulation Controller - Provides 4:1 modulation turndown control of furnace based on the discharge air temperature.

9.Amplifier - Controls the modulating valve based on the input from the modulation controller settings and discharge air temperature sensor reading.

10.Combustion Blower Relay - Passes power to the variable speed combustion blower.

11.Airflow Switches - Monitors the airflow inside the heat exchanger to ensure proper combustion airflow.

Model IG / IGX Make-Up Air 69

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Page 68 Page 70
Contents General Safety Information Installation, Operation and Maintenance ManualReceiving Inspection and Maintenance during StorageHandling StorageClearance to Combustibles / Service Clearances Table of ContentsInstallation of Arrangement DB / HZ Installation of Indoor UnitInstall Combination Curb Adaptor Installation of Roof Mounted Unit Arrangement DBCInstall Curb/Equipment Supports Assemble and Attach WeatherhoodInstall Exhaust Fan Install Exhaust OptionsInstall Supply Unit Installation of Venting for Outdoor Units Installation of Evaporative Cooling Module optionalVenting Methods Installation of Venting for Indoor UnitsStandard Indoor Venting Separated Combustion Concentric VentingInstallation of Standard Indoor Venting Installing Exhaust Vent PipeVent Pipe Diameter Concentric Venting Horizontal Installation of Concentric Venting GeneralConcentric Venting Vertical Intake END Seal Wall Openings Installation of Two Pipe Venting HorizontalSeal Roof Penetration Installation of Two Pipe Venting VerticalInstallation Electrical Wiring Install Economizer Sensors optional Wire the Evaporative Cooler optionalInstall Discharge Air Sensor optional Install DDC Interface OptionalInstall Additional Regulator if Required Installation of Gas PipingDetermine the Supply Gas Requirements Connect the Supply Gas LineInstall the Water Supply Line Installation Evaporative Cooler Piping optionalInstall the Drain Line Check/Adjust Water LevelInstall Normally Closed Supply Line/ Solenoid Installation of Water WizardTM optionalInstall Normally Open Drain Line/ Solenoid Water Wizard Valves When provided by manufacturerInstallation Direct Expansion DX Coil Piping optional Installation of Water WizardWire the Solenoids Wire the Temperature SensorMount the Remote Sensing Bulb By Others Install Suction LineCheck Coil Piping for Leaks Evacuate and Charge the CoilInstallation of Building Pressure Control optional Installation of Chilled Water Coil Piping optionalStart-Up Blower Set-up Optional Components Start-Up Furnaces all units Reset the Temperature SettingStart-Up Single Stage Control Send Unit to High FireStart-Up 81 Staged Control Start-Up 21 Staged ControlSend Unit to Low Fire Check the Low Fire Manifold PressureAccess the Discharge Air Temperature Setting Access the Setpoints MenuEdit the Setting Access the Inlet Air Sensor SettingAccess the Room Override Setting Start-Up 21 Electronic Modulation High Fire AdjustmentExit High Fire Mode Start-Up 41 Electronic ModulationCheck the Low Fire Manifold Pressures Access the Setpoints Menu Start-Up Economizer optional Verify Sensor InstallationSet Minimum Outside Air Set the Enthalpy Changeover Set Point optionalStart-Up Evaporative Cooling optional Start-Up Water Wizard optional Operation - Water Wizard optional External Signal a variable Check Operation VAV Units optionalBuilding Pressure Control Recirculation Operation Check Operation Recirculating Units optionalBuilding Pressure Control a Damper actuator may take a fewExhaust Fan Contact S1 Manually Closed optional Sequence of Operation Staged SequenceSequence of Operation 21 Modulation Sequence Outside Air Temperature OAt Discharge Air Temperature dtSSequence of Operation Modulation Sequence Operation Modulation Staged ControllerProgram Revision Number Sequence of Operation 41 Electronic ModulationOptional Room Override ROt Light Off BlinkingSequence of Operation Electronic Modulation Staging Control Sequence of Operation Sequence of Operation Staged ControlFollowing are the green LED codes of operation Operation and Errors Ignition ControllerOption EC-3 Differential Temperature Control Option EC-1 Outside Air Temperature ReferenceOperation Economizer Option EC-2 Outside Air Enthalpy ReferenceBlower Does Not Operate TroubleshootingMotor Over Amps Too Much Airflow Insufficient AirflowExcessive Noise or Vibration Improper manifold pressure Single or 21 Stage Furnace Will Not LightModulating 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 Water Blows through Evaporative Cooler Evaporative Cooler does not Operate Recirculating pumpAdjust the Manual Supply Valve Adjust the On Time FactorWater Wizard Improper Water Supply Belt Drives Maintenance RoutineSnow Accumulation WheelsFilters MotorsChilled Water Coils Evaporative CoolersMaintenance Fall Flushing Coils Reference Model IGX Venting Connection Location Reference Model IG 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 Performance Table Reference Performance TableStart-Up Checklist Reference Start-Up ChecklistWarranty Maintenance Log
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