Manuals / Roberts Gorden / Household Appliance / Gas Heater

Roberts Gorden UHA[X][S] 30 service manual Combat, Installation, Operation & Service Manual

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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Quality in Any Language™

WARNING

Improper installation, adjustment, alteration, service or maintenance can result in death, injury or property damage. Read the Installation, Operation and Service Manual thoroughly before installing or servicing this equipment.

Installation must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier.

Quality in Any Language™

© 2008 Roberts-Gordon LLC

Combat®

UHA-Series

Tubular Unit Heaters

(Low Profile Range)

Installation, Operation

& Service Manual

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

Installer

Please take the time to read and understand these instructions prior to any installation.

Installer must give a copy of this manual to the owner.

Owner

Keep this manual in a safe place in order to provide

your serviceman with necessary information.

Roberts-Gordon LLC

1250 William Street

P.O. Box 44

Buffalo, New York 14240-0044

Telephone: 716.852.4400

Fax: 716.852.0854

Toll Free: 800.828.7450

www.rg-inc.com

P/N 111100NA 11/08 Rev D

Image 1

Contents

Combat Installation, Operation & Service ManualUHA-Series Tubular Unit Heaters Low Profile Range Models UHAXS 30, 45, 60, 75, 100,Page 2008 Roberts-GordonLLC TABLE OF CONTENTSPrinted in U.S.A Page TABLE OF FIGURES Page 1.1 Manpower Requirements SECTION 1: HEATER SAFETY1.2 Safety Labels and Their Placement For separated combustion units only Figure 1: UHA 30 - 45 Label Placement For separated combustion units only Figure 2: UHA 60 - 75 Label Placement For separated combustion units only Figure 3: UHA 100 - 125 Label Placement 2.1 Wall Tag SECTION 2: INSTALLER RESPONSIBILITY2.2 Corrosive Chemicals 2.3 National Standards and Applicable Codes 3.2 Manufactured Units 3.4 Minimum Required Installation Clearances3.5 Clearances to Combustibles 3.6 Ventilation 3.8 Electrical Supply 3.7 Gas Supply3.9 Vent 4.2 Aircraft Hangars 4.1 Gas Codes4.3 Parking Structures and Repair Garages 4.4 Electrical 4.6 High Altitude 5.2 Shelf Mounting and Suspension SECTION 5: MAJOR COMPONENTS 5.1 General5.3 Wall Mounting Crush Hazard Use 3/8 threaded rod minimum Figure 6: Shelf-MountingMethods Figure 5: Suspension MethodsExisting cabinet screws must be re-used Part Number DescriptionWall Shelf Mounting Bracket Kit Description Push in Figure 8: Vertical Louvers Optionallouver and compress spring to remove SECTION 6 VENTING 6.3 Vent Installation6.1 Changing Vent and Air Intake Orientation 6.2 Venting 6.4 Unvented Operation 6.3.1Standard Vented Heaters Models UHAX 30 -6.5 Horizontal Venting 6.7 Length Requirements 6.6 Vertical Venting6.7.1 Maximum Vent Lengths 6.8 Vent Material Vertical Figure 9: Vent and Roof DetailHorizontal OptionPage Vertical Option Figure 13: Concentric Vent BoxHorizontal Option Vent Terminal 7.2 Unvented Installation 7.1 Separated Combustion InstallationSECTION 7 AIR SUPPLY 7.3 Building Ventilation 8.1 Connections SECTION 8: GAS PIPINGFigure 15: Gas Connection 9.1 Positioning Thermostats SECTION 9: WIRING9.1.1 Fan Control 9.2 Low Voltage Thermostat with One Heater Relay Type ModelRelay Part Number UHAXS 30 - DPST UHAXS 60 -90436300 Max. Number of Heaters 9.5 Internal Wiring Diagram 9.6 Ladder Wiring Diagram 9.7 Electrical Connection to the Heater 10.1 Pre-Start-UpChecks SECTION 10: OPERATION AND MAINTENANCE10.1.1 Louvers 10.1.2 Electrical Checks Figure 17: Gas Valve for Models UHAXS 30 - Figure 16: Automatic Burner Control SequenceRequired Incoming Signals Signals Output By Control Figure 18: Gas Valve for Models UHAXS 60 - 10.2.3 Pressure SwitchCheck Gas Rate 10.2.4 Turning Off the Heater 10.3 Complete Start-Up 10.2.5 External Controls10.3.1 Instruction to the User Figure 19: Manual Reset Limit Switch Reset Limit Switch - See Page 33, SectionSECTION 11: USER INSTRUCTIONS 11.1 User Instructions 11.5.1 Simple Troubleshooting Burner Faults 11.5 Simple TroubleshootingFigure 20: LED Diagnostic Codes 11.4.2 To Turn the Heater Off 12.3 Fan/Motor Assembly Maintenance 12.2 Burner Maintenance12.4 Heat Exchanger Maintenance 12.5 Gas Valve Maintenance 12.7 Venting and Air Intake Pipe 12.8 Maintenance ChecklistThe Vicinity of the Heater See Page 6, Section Combustion Air Intake when installedPipe Heat Exchanger START SECTION 13: TROUBLESHOOTING 13.1 General SECTION 13: TROUBLESHOOTING 13.3 Troubleshooting for Flame Supervision System 13.5Troubleshooting for Flue Blower 13.4Troubleshooting for Gas ValvesCorrect power START Burner Components SECTION 14 REPLACEMENT PARTS14.1 Gas Valve 14.2.1 Burner Injectors 14.2 Burner Compartment 14.3 Ignition Electrode and Flame Probe 14.5 Louver and Louver Springs 14.4 Heat ExchangerInstall Vertical screws Horizontal 14.6 Flue Blower Vertical Installation 14.9 Axial Fan/Guard/Motor Assembly 14.7 Pressure Switch14.8 Ignition Control 14.9.2 To Replace the Fan Assembly 14.9.1 Fan Removal and Replacement14.10 Limit Switches 14.10.1 Removal and Replacement TOP VIEW SECTION 15: SPECIFICATIONS 15.1 Dimension DataSIDE VIEW REAR VIEW 15.3 Technical Data Table All Models 15.2 General Technical Data Table All Models ROBERTS GORDON WILL PAY FOR WARRANTY IS VOID IFROBERTS GORDON WILL NOT PAY FOR Roberts-GordonPage About the Installer OWNER WARRANTY REGISTRATION CARDPurchased From if different than installer Type of Installation check onePage Page Fire Hazard Installation Clearancesclose to heater injury or property damage