Manuals / Roberts Gorden / Household Appliance / Furnace

Roberts Gorden UHD[X][S][R] 400, UHD[X][S][R] 300 Electrical Connection to the Heater

Models: UHD[X][S][R] 175 UHD[X][S][R] 150 UHD[X][S][R] 200 UHD[X][S][R] 225 UHD[X][S][R] 350 UHD[X][S][R] 400 UHD[X][S][R] 250 UHD[X][S][R] 300

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UHD STANDARD 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.

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Roberts Gorden UHD[X][S][R] 400, UHD[X][S][R] 300, UHD[X][S][R] 250, UHD[X][S][R] 350 Electrical Connection to the Heater

Contents

UHD-Series Tubular Duct Furnace Standard Range Installation, Operation & Service ManualCombat Models UHDXSR 150, 175, 200, 225 250, 300, 350,Page Printed in U.S.A TABLE OF CONTENTS2008 Roberts-GordonLLC Page TABLE OF FIGURES Page SECTION 1: HEATER SAFETY 1.1 Manpower Requirements2.3 National Standards and Applicable Codes SECTION 2 INSTALLER RESPONSIBILITY2.2 Corrosive Chemicals 2.1 Wall Tag3.4 Minimum Required Installation Clearances • Must be installed in a manner which allowsaccess to all serviceable components 3.2 Manufactured Units3.8 Electrical Supply 3.6 Ventilation3.7 Gas Supply 3.9 Vent4.3 Parking Structures and Repair Garages 4.1 Gas Codes4.2 Aircraft Hangars 4.4 Electrical4.6 High Altitude 5.1.1 Minimum Inlet Duct Length SECTION 5 DUCT HEATER INSTALLATION 5.1 General5.1.2 Temperature Rise and Pressure Drop Ranges Figure 2 Air Flow DirectionFigure 3: Suspension Methods 5.1.3 Air Flow And Temperature Rise Ranges5.2 Suspension Crush Hazard Use 3/8 threaded rod minimum6.1 Changing Vent and Air Intake Orientation 6.3 Vent InstallationSECTION 6: VENTING 6.2 Venting6.5 Horizontal Venting 6.3.1Standard Vented Heaters Models UHDXR 150 -6.4 Unvented Operation 6.6 Vertical VentingFigure 4: Vent and Roof Detail 6.7.1 Maximum Vent Lengths6.8 Vent Material 90502102 ModelUHDXR 150 - Vent DiameterHorizontal Option Figure 8 Concentric Vent BoxVertical Option Description SECTION 7: AIR SUPPLY 7.1 Separated Combustion Installation7.2 Unvented Installation 7.3 Building VentilationFigure 10 Gas Connection SECTION 8 GAS PIPING8.1 Connections 9.2 Low Voltage Thermostat with One Heater SECTION 9 WIRING9.1 Positioning Thermostats 9.3 Internal Wiring Diagram FLAME SENSOR ELECTRODE 9.4 Ladder Wiring Diagram120 VAC FLUE BLOWER TRANSFORMER GAS VALVE 9.5 Electrical Connection to the Heater 10.1.1 Electrical Checks SECTION 10: OPERATION AND MAINTENANCE10.1 Pre-Start-UpChecks 10.1.2 Gas SupplyEND VIEW Figure 11: Automatic Burner Control SequenceFigure 12: Gas Valve TOP VIEW10.2.4 Turning Off the Heater 10.2.3 Pressure SwitchCheck Gas Rate 10.2.5 External ControlsFigure 13 LED Diagnostic Codes 11.4 Simple Troubleshooting11.4.1 Simple Troubleshooting Burner Faults SECTION 11 USER INSTRUCTIONS12.4 Gas Valve Maintenance 12.2 Burner Maintenance12.3 Heat Exchanger Maintenance SECTION 12: SERVICINGSee Page 3, Section 12.7 Maintenance ChecklistThe Vicinity of the Heater Vehicles and OtherValves when installedGas Line and Shut-off Burner ObservationSECTION 13 TROUBLESHOOTING 13.1General STARTTROUBLESHOOT ENDS. No 13.3 Troubleshooting for Flame Supervision System START 13.4Troubleshooting for Gas Valves13.5 Troubleshooting for Flue Blower START14.1 Gas Valve SECTION 14: REPLACEMENT PARTSBurner Components Remove the gas supply pipe at the heater inletNOTE: Separated combustion 14.2 Burner Compartment14.2.1 Burner Injectors Ensure gas tight fitting of injectors14.3 Ignition Electrode and Flame Probe 14.4 Heat Exchanger 14.5 Flue Blower14.8.1 Removal and Replacement 14.6 Pressure Switch14.8 Limit Switches 14.7 Ignition ControlSECTION 15 SPECIFICATIONS 15.1 Dimension Data 15.2 General Technical Data Table 15.3 Technical Data TableROBERTS GORDON WILL NOT PAY FOR WARRANTY IS VOID IFROBERTS GORDON WILL PAY FOR U.S.APage Purchased From if different than installer OWNER WARRANTY REGISTRATION CARDAbout the Installer Type of Installation check onePage Page Fire Hazard