Manuals / Roberts Gorden / Household Appliance / Furnace

Roberts Gorden 100, 125 UHDXS 75 Label Placement, For separated combustion units only, 2 of

Models: 125 100 75

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Figure 1: UHD[X][S] 75 Label Placement

Description	Part Number
Logo Label	91040030
Cut Hazard Label	91010430
Vent Length Label	91039505
Vent to Outdoors Label	91010427
Warning Label	91010429
Rating Plate Label	91039802
Installation Label	91010431
Instruction Location Label	91010433
Lighting Instruction Label	91010425
Venting Arrangement Label*	91010426
Manual Reset Switch Label	91010428
Proposition 65 Label	91070015

* For separated combustion units only

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Roberts Gorden 100, 125 service manual UHDXS 75 Label Placement, For separated combustion units only, 2 of

Contents

Combat UHD-Series Tubular Duct Furnace Low Profile RangeModels UHDXS If you smell gasPage Combat Modèles UHDXSManuel d’installation, d’operation, et de service AVERTISSEMENTPage 2012 Roberts-GordonLLC Page TABLE OF FIGURES Page 1.2 Safety Labels and Their Placement SECTION 1 HEATER SAFETY1.1 Manpower Requirements 1.3 California PropositionFor separated combustion units only Figure 1 UHDXS 75 Label Placement2 of Combat Figure 2 UHDXS 100-125Label PlacementCombatby 2.2 Corrosive Chemicals SECTION 2 INSTALLER RESPONSIBILITY2.1 Wall Tag 2.3 National Standards and Applicable Codes3.1 Basic Information 3.4 Minimum Required Installation ClearancesSECTION 3 CRITICAL CONSIDERATIONS 6, Figure 3 for details4.2 Clearances to Combustibles Fire HazardFigure 3 Clearances to Combustibles 5.3 Parking Structures and Repair Garages 5.1 Gas Codes5.2 Aircraft Hangars 5.4 Electrical5.6 High Altitude 6.1.3 Air Flow and Temperature Rise Ranges SECTION 6 DUCT HEATER INSTALLATION 6.1 General6.1.2 Temperature Rise and Pressure Drop Ranges 6.1.1 Minimum Inlet Duct Length6.3 Wall Mounting 6.2 Shelf Mounting and SuspensionCrush Hazard Use 3/8 threaded rod minimum Figure 5: Suspension MethodsExisting cabinet screws must be re-used Figure 6 Shelf-MountingMethodsFigure 7 Wall Shelf Mounting and Suspension 11 ofSECTION 7 VENTING Heaters may be installed vented or unvented7.3 Vent Installation Carbon Monoxide Hazard7.5 Horizontal Venting 7.3.1Standard Vented Heaters Models UHDX7.4 Unvented Operation 7.6 Vertical Venting7.8 Vent Material 7.7.1 Maximum Vent LengthsFigure 8 Vent and Roof Detail UHDX 15 ofModel 90502102Requirements Figure 12 Concentric Vent Box 17 ofPart Number 18 ofDescription Concentric Vent KitSECTION 8 AIR SUPPLY 8.1 Separated Combustion Installation8.2 Unvented Installation Explosion HazardConnect gas supply according to Figure Gas can leak if not installed properlySECTION 9 GAS PIPING Fire Hazard 9.1 ConnectionsProduct Damage Hazard when attaching flexible gass connectorFigure 14 Gas Connection Hold gas nipple securely with pip wrench10.1 Positioning Thermostats SECTION 10 WIRING10.2 Low Voltage Thermostat with One Heater DANGER10.3 UHDXS Series Internal Wiring Diagram 10.4 UHDXS Series Ladder Wiring Diagram 10.5 Electrical Connection to the Heater before service SECTION 11 OPERATION AND MAINTENANCEheater before service during installationEND VIEW Figure 15 Automatic Burner Control SequenceFigure 16 Gas Valve for Models UHDXS before a one hour lockout11.2.4 Turning Off the Heater 11.2.3 Pressure SwitchCheck Gas Rate 11.2.5 External ControlsSECTION 12 USER INSTRUCTIONS 12.2.1 Manual Reset Limit SwitchThe fault must be traced and repaired 12.1 Heater Operation12.4.1 Simple Troubleshooting Burner Faults Figure 17 Manual Reset Limit Switch12.4 Simple Troubleshooting Figure 18 LED Diagnostic Codes13.4 Gas Valve Maintenance 13.2 Burner Maintenance13.3 Heat Exchanger Maintenance SECTION 13 SERVICINGAnnual Fall Start-up 13.7 Maintenance ChecklistInstallation Code and Annual Inspections The Vicinity of the HeaterPipe when installedCombustion Air Intake Heat Exchangerbefore service SECTION 14 TROUBLESHOOTINGheater before service during installation14.1General 35 of36 of TROUBLESHOOT ENDS. No14.3 Troubleshooting for Flame Supervision System 14.5 Troubleshooting for Flue Blower 14.4 Troubleshooting for Gas Valves38 of 15.1 Gas Valve SECTION 15 REPLACEMENT PARTSBurner Components DANGEREnsure gas tight fitting of injectors 15.2 Burner Compartment15.2.1 Burner Injectors Ensure correct alignment with burners15.3 Ignition Electrode and Flame Probe 15.4 Heat Exchanger15.5 Flue Blower Vertical Installation 15.8.1 Removal and Replacement 15.6 Pressure Switch15.8 Limit Switches 15.7 Ignition ControlSECTION 16 SPECIFICATIONS 16.1 Dimension Data 44 of16.3 Technical Data Table 16.2 General Technical Data Table45 of 46 of ROBERTS-GORDONLLC WILL NOT PAY FOR WARRANTY IS VOID IFROBERTS-GORDONLLC WILL PAY FOR Roberts-GordonLLCPage About the Installer Mail or Fax toOWNER WARRANTY REGISTRATION CARD Purchased From if different than installerPage