Manuals / Roberts Gorden / Household Appliance / Furnace

Roberts Gorden 125, 75, 100 service manual 15 of, Model, Uhdx, 90502102

Models: 125 100 75

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SECTION 7: VENTING

Figure 9: Standard Vented Heater - Vertical and Horizontal Vent Termination

Model	Vent Diameter	Part Number
UHD[X] 75 - 125	4" (10 cm)	90502102

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Roberts Gorden 125, 75, 100 service manual 15 of, Model, Uhdx, 90502102

Contents

If you smell gas UHD-Series Tubular Duct Furnace Low Profile RangeModels UHDXS CombatPage AVERTISSEMENT Modèles UHDXSManuel d’installation, d’operation, et de service CombatPage 2012 Roberts-GordonLLC Page TABLE OF FIGURES Page 1.3 California Proposition SECTION 1 HEATER SAFETY1.1 Manpower Requirements 1.2 Safety Labels and Their Placement2 of Figure 1 UHDXS 75 Label PlacementFor separated combustion units only Combatby Figure 2 UHDXS 100-125Label PlacementCombat 2.3 National Standards and Applicable Codes SECTION 2 INSTALLER RESPONSIBILITY2.1 Wall Tag 2.2 Corrosive Chemicals6, Figure 3 for details 3.4 Minimum Required Installation ClearancesSECTION 3 CRITICAL CONSIDERATIONS 3.1 Basic InformationFigure 3 Clearances to Combustibles Fire Hazard4.2 Clearances to Combustibles 5.4 Electrical 5.1 Gas Codes5.2 Aircraft Hangars 5.3 Parking Structures and Repair Garages5.6 High Altitude 6.1.1 Minimum Inlet Duct Length SECTION 6 DUCT HEATER INSTALLATION 6.1 General6.1.2 Temperature Rise and Pressure Drop Ranges 6.1.3 Air Flow and Temperature Rise RangesFigure 5: Suspension Methods 6.2 Shelf Mounting and SuspensionCrush Hazard Use 3/8 threaded rod minimum 6.3 Wall Mounting11 of Figure 6 Shelf-MountingMethodsFigure 7 Wall Shelf Mounting and Suspension Existing cabinet screws must be re-usedCarbon Monoxide Hazard Heaters may be installed vented or unvented7.3 Vent Installation SECTION 7 VENTING7.6 Vertical Venting 7.3.1Standard Vented Heaters Models UHDX7.4 Unvented Operation 7.5 Horizontal VentingFigure 8 Vent and Roof Detail 7.7.1 Maximum Vent Lengths7.8 Vent Material 90502102 15 ofModel UHDXRequirements 17 of Figure 12 Concentric Vent BoxConcentric Vent Kit 18 ofDescription Part NumberExplosion Hazard 8.1 Separated Combustion Installation8.2 Unvented Installation SECTION 8 AIR SUPPLY9.1 Connections Gas can leak if not installed properlySECTION 9 GAS PIPING Fire Hazard Connect gas supply according to FigureHold gas nipple securely with pip wrench when attaching flexible gass connectorFigure 14 Gas Connection Product Damage HazardDANGER SECTION 10 WIRING10.2 Low Voltage Thermostat with One Heater 10.1 Positioning Thermostats10.3 UHDXS Series Internal Wiring Diagram 10.4 UHDXS Series Ladder Wiring Diagram 10.5 Electrical Connection to the Heater during installation SECTION 11 OPERATION AND MAINTENANCEheater before service before servicebefore a one hour lockout Figure 15 Automatic Burner Control SequenceFigure 16 Gas Valve for Models UHDXS END VIEW11.2.5 External Controls 11.2.3 Pressure SwitchCheck Gas Rate 11.2.4 Turning Off the Heater12.1 Heater Operation 12.2.1 Manual Reset Limit SwitchThe fault must be traced and repaired SECTION 12 USER INSTRUCTIONSFigure 18 LED Diagnostic Codes Figure 17 Manual Reset Limit Switch12.4 Simple Troubleshooting 12.4.1 Simple Troubleshooting Burner FaultsSECTION 13 SERVICING 13.2 Burner Maintenance13.3 Heat Exchanger Maintenance 13.4 Gas Valve MaintenanceThe Vicinity of the Heater 13.7 Maintenance ChecklistInstallation Code and Annual Inspections Annual Fall Start-upHeat Exchanger when installedCombustion Air Intake Pipeduring installation SECTION 14 TROUBLESHOOTINGheater before service before service35 of 14.1GeneralTROUBLESHOOT ENDS. No 36 of14.3 Troubleshooting for Flame Supervision System 38 of 14.4 Troubleshooting for Gas Valves14.5 Troubleshooting for Flue Blower DANGER SECTION 15 REPLACEMENT PARTSBurner Components 15.1 Gas ValveEnsure correct alignment with burners 15.2 Burner Compartment15.2.1 Burner Injectors Ensure gas tight fitting of injectors15.4 Heat Exchanger 15.3 Ignition Electrode and Flame Probe15.5 Flue Blower Vertical Installation 15.7 Ignition Control 15.6 Pressure Switch15.8 Limit Switches 15.8.1 Removal and Replacement44 of SECTION 16 SPECIFICATIONS 16.1 Dimension Data45 of 16.2 General Technical Data Table16.3 Technical Data Table 46 of Roberts-GordonLLC WARRANTY IS VOID IFROBERTS-GORDONLLC WILL PAY FOR ROBERTS-GORDONLLC WILL NOT PAY FORPage Purchased From if different than installer Mail or Fax toOWNER WARRANTY REGISTRATION CARD About the InstallerPage

UHD[X] 75 - 125

90502102

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