Roberts Gorden UHD[X][S][R] 75, UHD[X][S][R] 125 service manual Electrical Connection to the Heater

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

9.5 Electrical Connection to the Heater

Burner

Connect wires together with suitable approved wire connectors.

Green to Ground

White to L2

Black to L1

Flexible Conduit

BX Connector

	L1	Junction Box
	L2	Junction Box
	L2
	Ground

Black

White

Green

IMPORTANT: Junction box is not provided with heater.

Conduit can also be attached directly to heater with wire junction made within the heater cabinet.

22

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Contents Combat Page Roberts-Gordon LLC Page Table of Figures Page Heater Safety Manpower RequirementsInstaller Responsibility Corrosive ChemicalsNational Standards and Applicable Codes Wall TagMinimum Required Installation Clearances Critical Considerations 3.1 Basic InformationManufactured Units Clearances to CombustiblesVentilation Electrical SupplyGas Supply VentNational Standards and Applicable Codes High Altitude Duct Heater Installation 5.1 General Temperature Rise and Pressure Drop RangesAir Flow and Temperature Rise Ranges Minimum Inlet Duct LengthShelf Mounting and Suspension Wall MountingShelf-Mounting Methods Vent Installation VentingChanging Vent and Air Intake Orientation United States RequirementsStandard Vented Heaters Models Uhdxr 75 Separated Combustion Heaters Models Uhdxsr 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 Separated Combustion Installation Unvented InstallationAIR Supply Building VentilationGAS Piping ConnectionsLow Voltage Thermostat with One Heater WiringPositioning Thermostats Internal Wiring Diagram L2 L1Ladder Wiring Diagram Flue Blower Transformer GAS Valve Flame Sensor ElectrodeElectrical Connection to the Heater Operation and Maintenance Begin Start-Up Before Operating the HeaterPre-Start-Up Checks Electrical ChecksEND View Pressure Switch Check Gas RateTurning 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 Maintenance Checklist Vicinity of the HeaterVehicles and Other ObjectsWhen installed Ductwork Gas Line and Shut-offValves Burner ObservationTroubleshooting 13.1 General Troubleshooting For Automatic Ignition Burner Systems Conduct start-up procedure as shown on Page 23, SectionTroubleshooting for Flame Supervision System Troubleshooting for Gas Valves Troubleshooting for Flue BlowerReplacement Parts Burner ComponentsBurner Compartment Burner InjectorsIgnition Electrode and Flame Probe Flue Blower Vertical Installation Top, remove the blower and mounting plate as aboveLimit Switches Removal and Replacement Ignition ControlSpecifications 15.1 Dimension Data TOP ViewGeneral Technical Data Table Technical Data TablePage Warranty is Void if Roberts Gordon will not PAY forRoberts-Gordon Limitations on Authority RepresentativesPage Owner Warranty Registration Card Page Page Clearances to Combustibles