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

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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®

UHD-Series

Tubular Duct Furnace

(Low Profile Range)

Installation, Operation

& Service Manual

Models UHD[X][S][R] 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 113000NA 11/08 Orig.

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Contents Combat Page Roberts-Gordon LLC Page Table of Figures Page Manpower Requirements Heater SafetyCorrosive Chemicals Installer ResponsibilityNational Standards and Applicable Codes Wall TagCritical Considerations 3.1 Basic Information Minimum Required Installation ClearancesManufactured Units Clearances to CombustiblesElectrical Supply VentilationGas Supply VentNational Standards and Applicable Codes High Altitude Temperature Rise and Pressure Drop Ranges Duct Heater Installation 5.1 GeneralAir Flow and Temperature Rise Ranges Minimum Inlet Duct LengthWall Mounting Shelf Mounting and SuspensionShelf-Mounting Methods Venting Vent InstallationChanging Vent and Air Intake Orientation United States RequirementsSeparated Combustion Heaters Models Uhdxsr 75 Standard Vented Heaters Models Uhdxr 75Unvented Operation Horizontal VentingVent Material Maximum Vent LengthsReplacing an Existing Heater in a Venting System Vent and Roof Detail Standard Vented Heater Common Vertical Vent Termination Concentric Vent Box UHVK1 Unvented Installation Separated Combustion InstallationAIR Supply Building VentilationConnections GAS PipingLow Voltage Thermostat with One Heater WiringPositioning Thermostats L2 L1 Internal Wiring DiagramFlue Blower Transformer GAS Valve Flame Sensor Electrode Ladder Wiring DiagramElectrical Connection to the Heater Begin Start-Up Before Operating the Heater Operation and MaintenancePre-Start-Up Checks Electrical ChecksEND View Check Gas Rate Pressure SwitchTurning Off the Heater External ControlsUser Instructions User InstructionsHeater Operation Lighting Instructions 11.4.1 To Turn On HeaterSimple Troubleshooting Burner Faults Simple TroubleshootingTo Turn Heater Off Servicing Vicinity of the Heater Maintenance ChecklistVehicles and Other ObjectsGas Line and Shut-off When installed DuctworkValves Burner ObservationTroubleshooting 13.1 General Conduct start-up procedure as shown on Page 23, Section Troubleshooting For Automatic Ignition Burner SystemsTroubleshooting for Flame Supervision System Troubleshooting for Flue Blower Troubleshooting for Gas ValvesBurner Components Replacement PartsBurner Injectors Burner CompartmentIgnition Electrode and Flame Probe Top, remove the blower and mounting plate as above Flue Blower Vertical InstallationIgnition Control Limit Switches Removal and ReplacementTOP View Specifications 15.1 Dimension DataTechnical Data Table General Technical Data TablePage Roberts Gordon will not PAY for Warranty is Void ifRoberts-Gordon Limitations on Authority RepresentativesPage Owner Warranty Registration Card Page Page Clearances to Combustibles