Roberts Gorden UHD[X][S][R] 125, UHD[X][S][R] 75 service manual Table of Figures

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TABLE OF FIGURES

 

Figure 1: Clearances to Combustibles

3

Figure 2: Air Flow Direction

7

Figure 3: Suspension Methods

8

Figure 4: Shelf-Mounting Methods

9

Figure 5: Wall Shelf Mounting and Suspension

9

Figure 6: Vent and Roof Detail

13

Figure 7: Standard Vented Heater - Vertical and Horizontal

 

Vent Termination

13

Figure 8: Standard Vented Heater - Common Vertical Vent

 

Termination

14

Figure 9: Separated Combustion Heater - Vertical and

 

Horizontal Vent Termination

15

Figure 10: Concentric Vent Box

15

Figure 11: Concentric Vertical and Horizontal Vent Termination -

Separated Combustion Heater

16

Figure 12: Gas Connection

18

Figure 13: Automatic Burner Control Sequence

24

Figure 14: Gas Valve

24

Figure 15: Manual Reset Limit Switch

26

Figure 16: LED Diagnostic Codes

27

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Contents Combat Page Roberts-Gordon LLC Page Table of Figures Page Manpower Requirements Heater SafetyCorrosive Chemicals Installer ResponsibilityNational Standards and Applicable Codes Wall TagCritical Considerations 3.1 Basic Information Minimum Required Installation ClearancesManufactured Units Clearances to CombustiblesElectrical Supply VentilationGas Supply VentNational Standards and Applicable Codes High Altitude Temperature Rise and Pressure Drop Ranges Duct Heater Installation 5.1 GeneralAir Flow and Temperature Rise Ranges Minimum Inlet Duct LengthWall Mounting Shelf Mounting and SuspensionShelf-Mounting Methods Venting Vent InstallationChanging Vent and Air Intake Orientation United States RequirementsSeparated Combustion Heaters Models Uhdxsr 75 Standard Vented Heaters Models Uhdxr 75Unvented Operation Horizontal VentingReplacing an Existing Heater in a Venting System Maximum Vent LengthsVent Material Vent and Roof Detail Standard Vented Heater Common Vertical Vent Termination Concentric Vent Box UHVK1 Unvented Installation Separated Combustion InstallationAIR Supply Building VentilationConnections GAS PipingPositioning Thermostats WiringLow Voltage Thermostat with One Heater L2 L1 Internal Wiring DiagramFlue Blower Transformer GAS Valve Flame Sensor Electrode Ladder Wiring DiagramElectrical Connection to the Heater Begin Start-Up Before Operating the Heater Operation and MaintenancePre-Start-Up Checks Electrical ChecksEND View Check Gas Rate Pressure SwitchTurning Off the Heater External ControlsUser Instructions User InstructionsHeater Operation Lighting Instructions 11.4.1 To Turn On HeaterTo Turn Heater Off Simple TroubleshootingSimple Troubleshooting Burner Faults Servicing Vicinity of the Heater Maintenance ChecklistVehicles and Other ObjectsGas Line and Shut-off When installed DuctworkValves Burner ObservationTroubleshooting 13.1 General Conduct start-up procedure as shown on Page 23, Section Troubleshooting For Automatic Ignition Burner SystemsTroubleshooting for Flame Supervision System Troubleshooting for Flue Blower Troubleshooting for Gas ValvesBurner Components Replacement PartsBurner Injectors Burner CompartmentIgnition Electrode and Flame Probe Top, remove the blower and mounting plate as above Flue Blower Vertical InstallationIgnition Control Limit Switches Removal and ReplacementTOP View Specifications 15.1 Dimension DataTechnical Data Table General Technical Data TablePage Roberts Gordon will not PAY for Warranty is Void ifRoberts-Gordon Limitations on Authority RepresentativesPage Owner Warranty Registration Card Page Page Clearances to Combustibles