Manuals / Roberts Gorden / Household Appliance / Gas Heater

Roberts Gorden UHA[X][S] 125 UHA 30 - 45 Label Placement, For separated combustion units only

Models: UHA[X][S] 75 UHA[X][S] 60 UHA[X][S] 100 UHA[X][S] 125 UHA[X][S] 30 UHA[X][S] 45

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UHA LOW PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

Figure 1: UHA 30 - 45 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	91010420
Installation Label	91010431
Instruction Location Label	91010433
Lighting Instruction Label	91010425
Venting Arrangement Label*	91010426
Manual Reset Switch Label	91010428

* For separated combustion units only

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Roberts Gorden UHA[X][S] 125, UHA[X][S] 45, UHA[X][S] 30 UHA 30 - 45 Label Placement, For separated combustion units only

Contents

Installation, Operation & Service Manual CombatUHA-Series Tubular Unit Heaters Low Profile Range Models UHAXS 30, 45, 60, 75, 100,Page Printed in U.S.A TABLE OF CONTENTS2008 Roberts-GordonLLC Page TABLE OF FIGURES Page 1.2 Safety Labels and Their Placement SECTION 1: HEATER SAFETY1.1 Manpower Requirements Figure 1: UHA 30 - 45 Label Placement For separated combustion units onlyFigure 2: UHA 60 - 75 Label Placement For separated combustion units onlyFigure 3: UHA 100 - 125 Label Placement For separated combustion units onlySECTION 2: INSTALLER RESPONSIBILITY 2.1 Wall Tag2.2 Corrosive Chemicals 2.3 National Standards and Applicable Codes3.4 Minimum Required Installation Clearances 3.2 Manufactured Units3.5 Clearances to Combustibles 3.6 Ventilation3.9 Vent 3.7 Gas Supply3.8 Electrical Supply 4.1 Gas Codes 4.2 Aircraft Hangars4.3 Parking Structures and Repair Garages 4.4 Electrical4.6 High Altitude SECTION 5: MAJOR COMPONENTS 5.1 General 5.2 Shelf Mounting and Suspension5.3 Wall Mounting Crush Hazard Use 3/8 threaded rod minimumExisting cabinet screws must be re-used Figure 5: Suspension MethodsFigure 6: Shelf-MountingMethods Description Part NumberWall Shelf Mounting Bracket Kit DescriptionFigure 8: Vertical Louvers Optional Push inlouver and compress spring to remove6.3 Vent Installation SECTION 6 VENTING6.1 Changing Vent and Air Intake Orientation 6.2 Venting6.5 Horizontal Venting 6.3.1Standard Vented Heaters Models UHAX 30 -6.4 Unvented Operation 6.6 Vertical Venting 6.7 Length Requirements6.7.1 Maximum Vent Lengths 6.8 Vent MaterialFigure 9: Vent and Roof Detail VerticalHorizontal OptionPage Figure 13: Concentric Vent Box Vertical OptionHorizontal OptionVent Terminal 7.1 Separated Combustion Installation 7.2 Unvented InstallationSECTION 7 AIR SUPPLY 7.3 Building VentilationFigure 15: Gas Connection SECTION 8: GAS PIPING8.1 Connections SECTION 9: WIRING 9.1 Positioning Thermostats9.1.1 Fan Control 9.2 Low Voltage Thermostat with One HeaterModel Relay TypeRelay Part Number UHAXS 30 -UHAXS 60 - DPST90436300 Max. Number of Heaters9.5 Internal Wiring Diagram 9.6 Ladder Wiring Diagram 9.7 Electrical Connection to the Heater SECTION 10: OPERATION AND MAINTENANCE 10.1 Pre-Start-UpChecks10.1.1 Louvers 10.1.2 Electrical ChecksFigure 16: Automatic Burner Control Sequence Figure 17: Gas Valve for Models UHAXS 30 -Required Incoming Signals Signals Output By Control10.2.3 Pressure Switch Figure 18: Gas Valve for Models UHAXS 60 -Check Gas Rate 10.2.4 Turning Off the Heater10.3.1 Instruction to the User 10.2.5 External Controls10.3 Complete Start-Up Reset Limit Switch - See Page 33, Section Figure 19: Manual Reset Limit SwitchSECTION 11: USER INSTRUCTIONS 11.1 User Instructions11.5 Simple Troubleshooting 11.5.1 Simple Troubleshooting Burner FaultsFigure 20: LED Diagnostic Codes 11.4.2 To Turn the Heater Off12.2 Burner Maintenance 12.3 Fan/Motor Assembly Maintenance12.4 Heat Exchanger Maintenance 12.5 Gas Valve Maintenance12.8 Maintenance Checklist 12.7 Venting and Air Intake PipeThe Vicinity of the Heater See Page 6, Sectionwhen installed Combustion Air IntakePipe Heat ExchangerSECTION 13: TROUBLESHOOTING 13.1 General STARTSECTION 13: TROUBLESHOOTING 13.3 Troubleshooting for Flame Supervision System 13.4Troubleshooting for Gas Valves 13.5Troubleshooting for Flue BlowerCorrect power START14.1 Gas Valve SECTION 14 REPLACEMENT PARTSBurner Components 14.2 Burner Compartment 14.2.1 Burner Injectors14.3 Ignition Electrode and Flame Probe 14.4 Heat Exchanger 14.5 Louver and Louver SpringsInstall Vertical screws Horizontal14.6 Flue Blower Vertical Installation 14.8 Ignition Control 14.7 Pressure Switch14.9 Axial Fan/Guard/Motor Assembly 14.9.1 Fan Removal and Replacement 14.9.2 To Replace the Fan Assembly14.10 Limit Switches 14.10.1 Removal and ReplacementSECTION 15: SPECIFICATIONS 15.1 Dimension Data TOP VIEWSIDE VIEW REAR VIEW15.2 General Technical Data Table All Models 15.3 Technical Data Table All ModelsWARRANTY IS VOID IF ROBERTS GORDON WILL PAY FORROBERTS GORDON WILL NOT PAY FOR Roberts-GordonPage OWNER WARRANTY REGISTRATION CARD About the InstallerPurchased From if different than installer Type of Installation check onePage Page Installation Clearances Fire Hazardclose to heater injury or property damage