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

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

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Contents Combat Page Roberts-Gordon LLC Page Table of Figures Page Heater Safety Manpower RequirementsInstaller Responsibility Corrosive ChemicalsNational Standards and Applicable Codes Wall TagMinimum Required Installation Clearances Critical Considerations 3.1 Basic InformationManufactured Units Clearances to CombustiblesVentilation Electrical SupplyGas Supply VentNational Standards and Applicable Codes High Altitude Duct Heater Installation 5.1 General Temperature Rise and Pressure Drop RangesAir Flow and Temperature Rise Ranges Minimum Inlet Duct LengthShelf Mounting and Suspension Wall MountingShelf-Mounting Methods Vent Installation VentingChanging Vent and Air Intake Orientation United States RequirementsStandard Vented Heaters Models Uhdxr 75 Separated Combustion Heaters Models Uhdxsr 75Unvented Operation Horizontal VentingMaximum Vent Lengths Vent MaterialReplacing an Existing Heater in a Venting System Vent and Roof Detail Standard Vented Heater Common Vertical Vent Termination Concentric Vent Box UHVK1 Separated Combustion Installation Unvented InstallationAIR Supply Building VentilationGAS Piping ConnectionsWiring Low Voltage Thermostat with One HeaterPositioning Thermostats Internal Wiring Diagram L2 L1Ladder Wiring Diagram Flue Blower Transformer GAS Valve Flame Sensor ElectrodeElectrical Connection to the Heater Operation and Maintenance Begin Start-Up Before Operating the HeaterPre-Start-Up Checks Electrical ChecksEND View Pressure Switch Check Gas RateTurning Off the Heater External ControlsUser Instructions User InstructionsHeater Operation Lighting Instructions 11.4.1 To Turn On HeaterSimple Troubleshooting Simple Troubleshooting Burner FaultsTo Turn Heater Off Servicing Maintenance Checklist Vicinity of the HeaterVehicles and Other ObjectsWhen installed Ductwork Gas Line and Shut-offValves Burner ObservationTroubleshooting 13.1 General Troubleshooting For Automatic Ignition Burner Systems Conduct start-up procedure as shown on Page 23, SectionTroubleshooting for Flame Supervision System Troubleshooting for Gas Valves Troubleshooting for Flue BlowerReplacement Parts Burner ComponentsBurner Compartment Burner InjectorsIgnition Electrode and Flame Probe Flue Blower Vertical Installation Top, remove the blower and mounting plate as aboveLimit Switches Removal and Replacement Ignition ControlSpecifications 15.1 Dimension Data TOP ViewGeneral Technical Data Table Technical Data TablePage Warranty is Void if Roberts Gordon will not PAY forRoberts-Gordon Limitations on Authority RepresentativesPage Owner Warranty Registration Card Page Page Clearances to Combustibles