Manuals / Roberts Gorden / Household Appliance / Gas Heater

Roberts Gorden 200, 350, 150, 400, 250, 300, 225, 175 service manual Electrical Connection to the Heater

Models: 175 225 300 250 400 150 350 200

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COMBAT® UHA UNIT HEATER 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

Note: Junction box is not provided with heater.

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

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Roberts Gorden 200, 350, 150, 400, 250, 300 Electrical Connection to the Heater, Note Junction box is not provided with heater

Contents

Combat UHA-Series Tubular Unit Heaters Standard RangeModels UHAS 150 If you smell gasPage SECTION 1 Heater Safety SECTION 2 Installer ResponsibilitySECTION 13 Troubleshooting SECTION 14 Replacement PartsPage TABLE OF FIGURES Page SECTION 1 HEATER SAFETY 1.1 Manpower RequirementsSECTION 2 INSTALLER RESPONSIBILITY 2.1 Wall Tag2.2 Corrosive Chemicals 2.3 National Standards and Applicable Codes3.3 Minimum Required Installation Clearances 3.9 Separated Combustion Installation3.4 Clearances to Combustibles 3.5 VentilationClearance to Vent 2 5 cm 4.1 Gas Codes 4.2 Aircraft Hangars4.3 Parking Structures and Repair Garages 4.4 ElectricalSECTION 5 MAJOR COMPONENTS 5.1 General 5.2 SuspensionFigure 2 Suspension Methods 6.2 Vent Installation SECTION 6 VENTING 6.1 Venting6.1.1 United States Requirements 6.1.2 Canadian Requirements6.3 Unvented Operation 6.4 Horizontal Venting6.5 Vertical Venting 6.6 Length Requirements6.7 Vent Material Figure 3 Vent and Roof DetailSIDE VIEW TOP VIEWFigure 7 Concentric Vent Box SECTION 6 VENTINGVertical Option 10 3 m Maximum HorizontalOption 7.1 Separated Combustion Installation 7.2 Unvented InstallationSECTION 7 AIR SUPPLY 7.3 Building VentilationSECTION 8 GAS PIPING 8.1 ConnectionsFigure 9 Gas Connection SECTION 9 WIRING 9.1 Positioning Thermostats9.1.1 Fan Control 9.2 Low Voltage Thermostat with One Heater9.3 UHAS Series Internal Wiring Diagram 9.4 UHAS Series Ladder Wiring Diagram 9.5 Electrical Connection to the Heater Note Junction box is not provided with heaterSECTION 10 OPERATION AND MAINTENANCE 10.1 Pre-Start-UpChecks10.1.1 Louvers 10.1.2 Electrical ChecksFigure 10 Automatic Burner Control Sequence Figure 11: Gas Valve for Models UHASRegulator Gas Inlet10.2.3 Pressure Switch Check Gas Rate10.2.4 Turning Off the Heater 10.2.5 External Controls11.5 Simple Troubleshooting 11.5.1 Simple Troubleshooting Burner FaultsFigure 12 LED Diagnostic Codes 11.2 Heater OperationFOR YOUR SAFETY If you smell gas12.2 Burner Maintenance 12.3 Fan/Motor Assembly Maintenance12.4 Heat Exchanger Maintenance 12.5 Gas Valve Maintenance12.8 Maintenance Checklist Installation Code and Annual Inspections AllThe Vicinity of the Heater See Page 3, Sectionwhen installed Burner ObservationWindow Combustion Fan ScrollSECTION 13 TROUBLESHOOTING 13.1 General Explosion HazardStart Start Electrical Shock HazardDo not touch ignition components Voltage from ignition components is high13.3 Troubleshooting for Flame Supervision System 13.4 Troubleshooting for Gas Valves 13.5 Troubleshooting for Combustion FanFor your safety and optimum heater performance use only genuine ROBERTS GORDON replacement partsSECTION 14 REPLACEMENT PARTS GAS VALVE IS USED WHEN REPLACING THESE CONTROLSBurner Components 14.1 Gas Valve14.2 Burner Compartment 14.2.1 Burner InjectorsUHAS UHAS14.3 Ignition Electrode and Flame Probe 14.4 Combustion Fan Vertical Installation 14.5 Pressure Switch 14.7 Axial Fan/Guard/Motor Assembly 14.8 Limit Switches14.8.1 Removal and Replacement 14.7.1 Fan Removal and ReplacementSECTION 15 SPECIFICATIONS SECTION 15 SPECIFICATIONSModel UHAS15.2 General Technical Data Table All Models 15.3 Technical Data Table All ModelsModel UHASWARRANTY IS VOID IF ROBERTS-GORDONWILL PAY FORROBERTS-GORDONWILL NOT PAY FOR U.S.APage Page Installation Clearances Fire Hazardclose to heater injury or property damage